制作图形界面

KLALB/KNECloud/KNE云盘.json

@@ -0,0 +1,2 @@
+bindport=4568
+bindip=0.0.0.0

KLALB/KNECloud/KNE官网.json

@@ -0,0 +1,2 @@
+bindport=8081
+bindip=127.0.0.2

KLALB/KNECloud/iplist.json

@@ -0,0 +1,68 @@
+{
+  "name" : "KNECloud",
+  "services" : [ {
+    "name" : "KNE官网",
+    "protocol" : "HTTP",
+    "localaddress" : "127.0.0.1:8081"
+  }, {
+    "name" : "KNE云盘",
+    "protocol" : "HTTP",
+    "localaddress" : "127.0.0.1:5212"
+  }, {
+    "name" : "服务器远程桌面",
+    "protocol" : "RDP",
+    "localaddress" : "127.0.0.1:3389"
+  } ],
+  "tunnels" : [ {
+    "name" : "NULL-宿迁联通",
+    "remoteaddress" : "153.36.240.12:65529"
+  }, {
+    "name" : "Openfrp-韩国春川-1",
+    "remoteaddress" : "kr-nc-bgp-1.openfrp.top:65529"
+  }, {
+    "name" : "Openfrp-北京多线-3",
+    "remoteaddress" : "cn-bj-bgp-3.openfrp.top:65529"
+  }, {
+    "name" : "Openfrp-北京多线-7",
+    "remoteaddress" : "180.76.147.250:65529"
+  }, {
+    "name" : "Openfrp-美国-8「BGP」",
+    "remoteaddress" : "us-los-bgp-8.openfrp.top:65529"
+  }, {
+    "name" : "Openfrp-新加坡-1「BGP」",
+    "remoteaddress" : "singa-bgp-2.openfrp.top:65529"
+  }, {
+    "name" : "XYZ-韩国首尔",
+    "remoteaddress" : "frp.104300.xyz:49965"
+  }, {
+    "name" : "aFrps-美国洛杉矶",
+    "remoteaddress" : "la.afrps.cn:49966"
+  }, {
+    "name" : "aFrps-新加坡",
+    "remoteaddress" : "sg.afrps.cn:49966"
+  }, {
+    "name" : "aFrps-美国圣何塞",
+    "remoteaddress" : "sj.afrps.cn:49966"
+  }, {
+    "name" : "Sakurafrp-安徽电信-1",
+    "remoteaddress" : "cn-ah-dx-1.natfrp.cloud:65529"
+  }, {
+    "name" : "Sakurafrp-十堰电信-1",
+    "remoteaddress" : "cn-sy-dx-1.natfrp.cloud:65529"
+  }, {
+    "name" : "Sakurafrp-武汉电信-1",
+    "remoteaddress" : "cn-wh-dx-1.natfrp.cloud:65529"
+  }, {
+    "name" : "Freefrp-韩国首尔-0",
+    "remoteaddress" : "frp.freefrp.net:49965"
+  }, {
+    "name" : "Freefrp-韩国首尔-1",
+    "remoteaddress" : "frp1.freefrp.net:49965"
+  }, {
+    "name" : "Freefrp-韩国首尔-2",
+    "remoteaddress" : "frp2.freefrp.net:49965"
+  }, {
+    "name" : "Freefrp-韩国首尔-4",
+    "remoteaddress" : "frp4.freefrp.net:49965"
+  } ]
+}

KLALB/KNECloud/服务器远程桌面.json

@@ -0,0 +1,2 @@
+bindport=3389
+bindip=127.0.0.1

KLALBClient.bat

@@ -0,0 +1 @@
+@java -cp ".\bin" org.kne.cloud.network.klalb.KLALBClient %*

klalbs.ini

@@ -1,14 +0,0 @@
-4569
-HTTP$127.0.0.1:8081
->
-NULL-宿迁联通$153.36.240.12:65529
-Openfrp-杭州多线-1$cn-hz-bgp-1.openfrp.top:65529
-Openfrp-北京多线-3$cn-bj-bgp-3.openfrp.top:65529
-Openfrp-北京多线-7$180.76.147.250:65529
-Openfrp-西安电信-1$cn-sx-xa-bgp-1.openfrp.top:65529
-XYZ-韩国首尔$frp.104300.xyz:49965
-aFrps-美国洛杉矶$la.afrps.cn:49966
-aFrps-新加坡$sg.afrps.cn:49966
-aFrps-美国芝加哥$ch.afrps.cn:49966
-aFrps-美国圣何塞$sj.afrps.cn:49966
-

klalbs.json

@@ -0,0 +1,68 @@
+{
+  "name" : "KNECloud",
+  "services" : [ {
+    "name" : "KNE官网",
+    "protocol" : "HTTP",
+    "localaddress" : "127.0.0.1:8081"
+  }, {
+    "name" : "KNE云盘",
+    "protocol" : "HTTP",
+    "localaddress" : "127.0.0.1:5212"
+  }, {
+    "name" : "服务器远程桌面",
+    "protocol" : "RDP",
+    "localaddress" : "127.0.0.1:3389"
+  } ],
+  "tunnels" : [ {
+    "name" : "NULL-宿迁联通",
+    "remoteaddress" : "153.36.240.12:65529"
+  }, {
+    "name" : "Openfrp-韩国春川-1",
+    "remoteaddress" : "kr-nc-bgp-1.openfrp.top:65529"
+  }, {
+    "name" : "Openfrp-北京多线-3",
+    "remoteaddress" : "cn-bj-bgp-3.openfrp.top:65529"
+  }, {
+    "name" : "Openfrp-北京多线-7",
+    "remoteaddress" : "180.76.147.250:65529"
+  }, {
+    "name" : "Openfrp-美国-8「BGP」",
+    "remoteaddress" : "us-los-bgp-8.openfrp.top:65529"
+  }, {
+    "name" : "Openfrp-新加坡-1「BGP」",
+    "remoteaddress" : "singa-bgp-2.openfrp.top:65529"
+  }, {
+    "name" : "XYZ-韩国首尔",
+    "remoteaddress" : "frp.104300.xyz:49965"
+  }, {
+    "name" : "aFrps-美国洛杉矶",
+    "remoteaddress" : "la.afrps.cn:49966"
+  }, {
+    "name" : "aFrps-新加坡",
+    "remoteaddress" : "sg.afrps.cn:49966"
+  }, {
+    "name" : "aFrps-美国圣何塞",
+    "remoteaddress" : "sj.afrps.cn:49966"
+  }, {
+    "name" : "Sakurafrp-安徽电信-1",
+    "remoteaddress" : "cn-ah-dx-1.natfrp.cloud:65529"
+  }, {
+    "name" : "Sakurafrp-十堰电信-1",
+    "remoteaddress" : "cn-sy-dx-1.natfrp.cloud:65529"
+  }, {
+    "name" : "Sakurafrp-武汉电信-1",
+    "remoteaddress" : "cn-wh-dx-1.natfrp.cloud:65529"
+  }, {
+    "name" : "Freefrp-韩国首尔-0",
+    "remoteaddress" : "frp.freefrp.net:49965"
+  }, {
+    "name" : "Freefrp-韩国首尔-1",
+    "remoteaddress" : "frp1.freefrp.net:49965"
+  }, {
+    "name" : "Freefrp-韩国首尔-2",
+    "remoteaddress" : "frp2.freefrp.net:49965"
+  }, {
+    "name" : "Freefrp-韩国首尔-4",
+    "remoteaddress" : "frp4.freefrp.net:49965"
+  } ]
+}

kserver.ini

@@ -0,0 +1 @@
+port=4569

src/com/google/gson/DefaultDateTypeAdapter.java

@@ -0,0 +1,119 @@
+/*
+ * Copyright (C) 2008 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson;
+
+import java.lang.reflect.Type;
+import java.sql.Timestamp;
+import java.text.DateFormat;
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+import java.util.Locale;
+import java.util.TimeZone;
+
+/**
+ * This type adapter supports three subclasses of date: Date, Timestamp, and
+ * java.sql.Date.
+ *
+ * @author Inderjeet Singh
+ * @author Joel Leitch
+ */
+final class DefaultDateTypeAdapter implements JsonSerializer<Date>, JsonDeserializer<Date> {
+
+  // TODO: migrate to streaming adapter
+
+  private final DateFormat enUsFormat;
+  private final DateFormat localFormat;
+  private final DateFormat iso8601Format;
+
+  DefaultDateTypeAdapter() {
+    this(DateFormat.getDateTimeInstance(DateFormat.DEFAULT, DateFormat.DEFAULT, Locale.US),
+        DateFormat.getDateTimeInstance(DateFormat.DEFAULT, DateFormat.DEFAULT));
+  }
+
+  DefaultDateTypeAdapter(String datePattern) {
+    this(new SimpleDateFormat(datePattern, Locale.US), new SimpleDateFormat(datePattern));
+  }
+
+  DefaultDateTypeAdapter(int style) {
+    this(DateFormat.getDateInstance(style, Locale.US), DateFormat.getDateInstance(style));
+  }
+
+  public DefaultDateTypeAdapter(int dateStyle, int timeStyle) {
+    this(DateFormat.getDateTimeInstance(dateStyle, timeStyle, Locale.US),
+        DateFormat.getDateTimeInstance(dateStyle, timeStyle));
+  }
+
+  DefaultDateTypeAdapter(DateFormat enUsFormat, DateFormat localFormat) {
+    this.enUsFormat = enUsFormat;
+    this.localFormat = localFormat;
+    this.iso8601Format = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'", Locale.US);
+    this.iso8601Format.setTimeZone(TimeZone.getTimeZone("UTC"));
+  }
+
+  // These methods need to be synchronized since JDK DateFormat classes are not thread-safe
+  // See issue 162
+  public JsonElement serialize(Date src, Type typeOfSrc, JsonSerializationContext context) {
+    synchronized (localFormat) {
+      String dateFormatAsString = enUsFormat.format(src);
+      return new JsonPrimitive(dateFormatAsString);
+    }
+  }
+
+  public Date deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
+      throws JsonParseException {
+    if (!(json instanceof JsonPrimitive)) {
+      throw new JsonParseException("The date should be a string value");
+    }
+    Date date = deserializeToDate(json);
+    if (typeOfT == Date.class) {
+      return date;
+    } else if (typeOfT == Timestamp.class) {
+      return new Timestamp(date.getTime());
+    } else if (typeOfT == java.sql.Date.class) {
+      return new java.sql.Date(date.getTime());
+    } else {
+      throw new IllegalArgumentException(getClass() + " cannot deserialize to " + typeOfT);
+    }
+  }
+
+  private Date deserializeToDate(JsonElement json) {
+    synchronized (localFormat) {
+      try {
+        return localFormat.parse(json.getAsString());
+      } catch (ParseException ignored) {
+      }
+      try {
+        return enUsFormat.parse(json.getAsString());
+      } catch (ParseException ignored) {
+      }
+      try {
+        return iso8601Format.parse(json.getAsString());
+      } catch (ParseException e) {
+        throw new JsonSyntaxException(json.getAsString(), e);
+      }
+    }
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append(DefaultDateTypeAdapter.class.getSimpleName());
+    sb.append('(').append(localFormat.getClass().getSimpleName()).append(')');
+    return sb.toString();
+  }
+}

src/com/google/gson/ExclusionStrategy.java

@@ -0,0 +1,109 @@
+/*
+ * Copyright (C) 2008 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson;
+
+/**
+ * A strategy (or policy) definition that is used to decide whether or not a field or top-level
+ * class should be serialized or deserialized as part of the JSON output/input. For serialization,
+ * if the {@link #shouldSkipClass(Class)} method returns false then that class or field type
+ * will not be part of the JSON output.  For deserialization, if {@link #shouldSkipClass(Class)}
+ * returns false, then it will not be set as part of the Java object structure.
+ *
+ * <p>The following are a few examples that shows how you can use this exclusion mechanism.
+ *
+ * <p><strong>Exclude fields and objects based on a particular class type:</strong>
+ * <pre class="code">
+ * private static class SpecificClassExclusionStrategy implements ExclusionStrategy {
+ *   private final Class&lt;?&gt; excludedThisClass;
+ *
+ *   public SpecificClassExclusionStrategy(Class&lt;?&gt; excludedThisClass) {
+ *     this.excludedThisClass = excludedThisClass;
+ *   }
+ *
+ *   public boolean shouldSkipClass(Class&lt;?&gt; clazz) {
+ *     return excludedThisClass.equals(clazz);
+ *   }
+ *
+ *   public boolean shouldSkipField(FieldAttributes f) {
+ *     return excludedThisClass.equals(f.getDeclaredClass());
+ *   }
+ * }
+ * </pre>
+ *
+ * <p><strong>Excludes fields and objects based on a particular annotation:</strong>
+ * <pre class="code">
+ * public &#64interface FooAnnotation {
+ *   // some implementation here
+ * }
+ *
+ * // Excludes any field (or class) that is tagged with an "&#64FooAnnotation"
+ * private static class FooAnnotationExclusionStrategy implements ExclusionStrategy {
+ *   public boolean shouldSkipClass(Class&lt;?&gt; clazz) {
+ *     return clazz.getAnnotation(FooAnnotation.class) != null;
+ *   }
+ *
+ *   public boolean shouldSkipField(FieldAttributes f) {
+ *     return f.getAnnotation(FooAnnotation.class) != null;
+ *   }
+ * }
+ * </pre>
+ *
+ * <p>Now if you want to configure {@code Gson} to use a user defined exclusion strategy, then
+ * the {@code GsonBuilder} is required. The following is an example of how you can use the
+ * {@code GsonBuilder} to configure Gson to use one of the above sample:
+ * <pre class="code">
+ * ExclusionStrategy excludeStrings = new UserDefinedExclusionStrategy(String.class);
+ * Gson gson = new GsonBuilder()
+ *     .setExclusionStrategies(excludeStrings)
+ *     .create();
+ * </pre>
+ *
+ * <p>For certain model classes, you may only want to serialize a field, but exclude it for
+ * deserialization. To do that, you can write an {@code ExclusionStrategy} as per normal;
+ * however, you would register it with the
+ * {@link GsonBuilder#addDeserializationExclusionStrategy(ExclusionStrategy)} method.
+ * For example:
+ * <pre class="code">
+ * ExclusionStrategy excludeStrings = new UserDefinedExclusionStrategy(String.class);
+ * Gson gson = new GsonBuilder()
+ *     .addDeserializationExclusionStrategy(excludeStrings)
+ *     .create();
+ * </pre>
+ *
+ * @author Inderjeet Singh
+ * @author Joel Leitch
+ *
+ * @see GsonBuilder#setExclusionStrategies(ExclusionStrategy...)
+ * @see GsonBuilder#addDeserializationExclusionStrategy(ExclusionStrategy)
+ * @see GsonBuilder#addSerializationExclusionStrategy(ExclusionStrategy)
+ *
+ * @since 1.4
+ */
+public interface ExclusionStrategy {
+
+  /**
+   * @param f the field object that is under test
+   * @return true if the field should be ignored; otherwise false
+   */
+  public boolean shouldSkipField(FieldAttributes f);
+
+  /**
+   * @param clazz the class object that is under test
+   * @return true if the class should be ignored; otherwise false
+   */
+  public boolean shouldSkipClass(Class<?> clazz);
+}

src/com/google/gson/FieldAttributes.java

@@ -0,0 +1,157 @@
+/*
+ * Copyright (C) 2009 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson;
+
+import com.google.gson.internal.$Gson$Preconditions;
+import java.lang.annotation.Annotation;
+import java.lang.reflect.Field;
+import java.lang.reflect.Type;
+import java.util.Arrays;
+import java.util.Collection;
+
+/**
+ * A data object that stores attributes of a field.
+ *
+ * <p>This class is immutable; therefore, it can be safely shared across threads.
+ *
+ * @author Inderjeet Singh
+ * @author Joel Leitch
+ *
+ * @since 1.4
+ */
+public final class FieldAttributes {
+  private final Field field;
+
+  /**
+   * Constructs a Field Attributes object from the {@code f}.
+   *
+   * @param f the field to pull attributes from
+   */
+  public FieldAttributes(Field f) {
+    $Gson$Preconditions.checkNotNull(f);
+    this.field = f;
+  }
+
+  /**
+   * @return the declaring class that contains this field
+   */
+  public Class<?> getDeclaringClass() {
+    return field.getDeclaringClass();
+  }
+
+  /**
+   * @return the name of the field
+   */
+  public String getName() {
+    return field.getName();
+  }
+
+  /**
+   * <p>For example, assume the following class definition:
+   * <pre class="code">
+   * public class Foo {
+   *   private String bar;
+   *   private List&lt;String&gt; red;
+   * }
+   *
+   * Type listParmeterizedType = new TypeToken&lt;List&lt;String&gt;&gt;() {}.getType();
+   * </pre>
+   *
+   * <p>This method would return {@code String.class} for the {@code bar} field and
+   * {@code listParameterizedType} for the {@code red} field.
+   *
+   * @return the specific type declared for this field
+   */
+  public Type getDeclaredType() {
+    return field.getGenericType();
+  }
+
+  /**
+   * Returns the {@code Class} object that was declared for this field.
+   *
+   * <p>For example, assume the following class definition:
+   * <pre class="code">
+   * public class Foo {
+   *   private String bar;
+   *   private List&lt;String&gt; red;
+   * }
+   * </pre>
+   *
+   * <p>This method would return {@code String.class} for the {@code bar} field and
+   * {@code List.class} for the {@code red} field.
+   *
+   * @return the specific class object that was declared for the field
+   */
+  public Class<?> getDeclaredClass() {
+    return field.getType();
+  }
+
+  /**
+   * Return the {@code T} annotation object from this field if it exist; otherwise returns
+   * {@code null}.
+   *
+   * @param annotation the class of the annotation that will be retrieved
+   * @return the annotation instance if it is bound to the field; otherwise {@code null}
+   */
+  public <T extends Annotation> T getAnnotation(Class<T> annotation) {
+    return field.getAnnotation(annotation);
+  }
+
+  /**
+   * Return the annotations that are present on this field.
+   *
+   * @return an array of all the annotations set on the field
+   * @since 1.4
+   */
+  public Collection<Annotation> getAnnotations() {
+    return Arrays.asList(field.getAnnotations());
+  }
+
+  /**
+   * Returns {@code true} if the field is defined with the {@code modifier}.
+   *
+   * <p>This method is meant to be called as:
+   * <pre class="code">
+   * boolean hasPublicModifier = fieldAttribute.hasModifier(java.lang.reflect.Modifier.PUBLIC);
+   * </pre>
+   *
+   * @see java.lang.reflect.Modifier
+   */
+  public boolean hasModifier(int modifier) {
+    return (field.getModifiers() & modifier) != 0;
+  }
+
+  /**
+   * This is exposed internally only for the removing synthetic fields from the JSON output.
+   *
+   * @return true if the field is synthetic; otherwise false
+   * @throws IllegalAccessException
+   * @throws IllegalArgumentException
+   */
+  Object get(Object instance) throws IllegalAccessException {
+    return field.get(instance);
+  }
+
+  /**
+   * This is exposed internally only for the removing synthetic fields from the JSON output.
+   *
+   * @return true if the field is synthetic; otherwise false
+   */
+  boolean isSynthetic() {
+    return field.isSynthetic();
+  }
+}

src/com/google/gson/FieldNamingPolicy.java

@@ -0,0 +1,168 @@
+/*
+ * Copyright (C) 2008 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson;
+
+import java.lang.reflect.Field;
+
+/**
+ * An enumeration that defines a few standard naming conventions for JSON field names.
+ * This enumeration should be used in conjunction with {@link com.google.gson.GsonBuilder}
+ * to configure a {@link com.google.gson.Gson} instance to properly translate Java field
+ * names into the desired JSON field names.
+ *
+ * @author Inderjeet Singh
+ * @author Joel Leitch
+ */
+public enum FieldNamingPolicy implements FieldNamingStrategy {
+
+  /**
+   * Using this naming policy with Gson will ensure that the field name is
+   * unchanged.
+   */
+  IDENTITY() {
+    public String translateName(Field f) {
+      return f.getName();
+    }
+  },
+
+  /**
+   * Using this naming policy with Gson will ensure that the first "letter" of the Java
+   * field name is capitalized when serialized to its JSON form.
+   *
+   * <p>Here's a few examples of the form "Java Field Name" ---> "JSON Field Name":</p>
+   * <ul>
+   *   <li>someFieldName ---> SomeFieldName</li>
+   *   <li>_someFieldName ---> _SomeFieldName</li>
+   * </ul>
+   */
+  UPPER_CAMEL_CASE() {
+    public String translateName(Field f) {
+      return upperCaseFirstLetter(f.getName());
+    }
+  },
+
+  /**
+   * Using this naming policy with Gson will ensure that the first "letter" of the Java
+   * field name is capitalized when serialized to its JSON form and the words will be
+   * separated by a space.
+   *
+   * <p>Here's a few examples of the form "Java Field Name" ---> "JSON Field Name":</p>
+   * <ul>
+   *   <li>someFieldName ---> Some Field Name</li>
+   *   <li>_someFieldName ---> _Some Field Name</li>
+   * </ul>
+   *
+   * @since 1.4
+   */
+  UPPER_CAMEL_CASE_WITH_SPACES() {
+    public String translateName(Field f) {
+      return upperCaseFirstLetter(separateCamelCase(f.getName(), " "));
+    }
+  },
+
+  /**
+   * Using this naming policy with Gson will modify the Java Field name from its camel cased
+   * form to a lower case field name where each word is separated by an underscore (_).
+   *
+   * <p>Here's a few examples of the form "Java Field Name" ---> "JSON Field Name":</p>
+   * <ul>
+   *   <li>someFieldName ---> some_field_name</li>
+   *   <li>_someFieldName ---> _some_field_name</li>
+   *   <li>aStringField ---> a_string_field</li>
+   *   <li>aURL ---> a_u_r_l</li>
+   * </ul>
+   */
+  LOWER_CASE_WITH_UNDERSCORES() {
+    public String translateName(Field f) {
+      return separateCamelCase(f.getName(), "_").toLowerCase();
+    }
+  },
+
+  /**
+   * Using this naming policy with Gson will modify the Java Field name from its camel cased
+   * form to a lower case field name where each word is separated by a dash (-).
+   *
+   * <p>Here's a few examples of the form "Java Field Name" ---> "JSON Field Name":</p>
+   * <ul>
+   *   <li>someFieldName ---> some-field-name</li>
+   *   <li>_someFieldName ---> _some-field-name</li>
+   *   <li>aStringField ---> a-string-field</li>
+   *   <li>aURL ---> a-u-r-l</li>
+   * </ul>
+   * Using dashes in JavaScript is not recommended since dash is also used for a minus sign in
+   * expressions. This requires that a field named with dashes is always accessed as a quoted
+   * property like {@code myobject['my-field']}. Accessing it as an object field
+   * {@code myobject.my-field} will result in an unintended javascript expression.
+   * @since 1.4
+   */
+  LOWER_CASE_WITH_DASHES() {
+    public String translateName(Field f) {
+      return separateCamelCase(f.getName(), "-").toLowerCase();
+    }
+  };
+
+  /**
+   * Converts the field name that uses camel-case define word separation into
+   * separate words that are separated by the provided {@code separatorString}.
+   */
+  private static String separateCamelCase(String name, String separator) {
+    StringBuilder translation = new StringBuilder();
+    for (int i = 0; i < name.length(); i++) {
+      char character = name.charAt(i);
+      if (Character.isUpperCase(character) && translation.length() != 0) {
+        translation.append(separator);
+      }
+      translation.append(character);
+    }
+    return translation.toString();
+  }
+
+  /**
+   * Ensures the JSON field names begins with an upper case letter.
+   */
+  private static String upperCaseFirstLetter(String name) {
+    StringBuilder fieldNameBuilder = new StringBuilder();
+    int index = 0;
+    char firstCharacter = name.charAt(index);
+
+    while (index < name.length() - 1) {
+      if (Character.isLetter(firstCharacter)) {
+        break;
+      }
+
+      fieldNameBuilder.append(firstCharacter);
+      firstCharacter = name.charAt(++index);
+    }
+
+    if (index == name.length()) {
+      return fieldNameBuilder.toString();
+    }
+
+    if (!Character.isUpperCase(firstCharacter)) {
+      String modifiedTarget = modifyString(Character.toUpperCase(firstCharacter), name, ++index);
+      return fieldNameBuilder.append(modifiedTarget).toString();
+    } else {
+      return name;
+    }
+  }
+
+  private static String modifyString(char firstCharacter, String srcString, int indexOfSubstring) {
+    return (indexOfSubstring < srcString.length())
+        ? firstCharacter + srcString.substring(indexOfSubstring)
+        : String.valueOf(firstCharacter);
+  }
+}

src/com/google/gson/FieldNamingStrategy.java

@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2008 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson;
+
+import java.lang.reflect.Field;
+
+/**
+ * A mechanism for providing custom field naming in Gson.  This allows the client code to translate
+ * field names into a particular convention that is not supported as a normal Java field
+ * declaration rules.  For example, Java does not support "-" characters in a field name.
+ *
+ * @author Inderjeet Singh
+ * @author Joel Leitch
+ * @since 1.3
+ */
+public interface FieldNamingStrategy {
+
+  /**
+   * Translates the field name into its JSON field name representation.
+   *
+   * @param f the field object that we are translating
+   * @return the translated field name.
+   * @since 1.3
+   */
+  public String translateName(Field f);
+}

src/com/google/gson/Gson.java

@@ -0,0 +1,856 @@
+/*
+ * Copyright (C) 2008 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson;
+
+import com.google.gson.internal.ConstructorConstructor;
+import com.google.gson.internal.Excluder;
+import com.google.gson.internal.GsonInternalAccess;
+import com.google.gson.internal.Primitives;
+import com.google.gson.internal.Streams;
+import com.google.gson.internal.bind.ArrayTypeAdapter;
+import com.google.gson.internal.bind.BigDecimalTypeAdapter;
+import com.google.gson.internal.bind.BigIntegerTypeAdapter;
+import com.google.gson.internal.bind.CollectionTypeAdapterFactory;
+import com.google.gson.internal.bind.DateTypeAdapter;
+import com.google.gson.internal.bind.JsonTreeReader;
+import com.google.gson.internal.bind.JsonTreeWriter;
+import com.google.gson.internal.bind.MapTypeAdapterFactory;
+import com.google.gson.internal.bind.ObjectTypeAdapter;
+import com.google.gson.internal.bind.ReflectiveTypeAdapterFactory;
+import com.google.gson.internal.bind.SqlDateTypeAdapter;
+import com.google.gson.internal.bind.TimeTypeAdapter;
+import com.google.gson.internal.bind.TypeAdapters;
+import com.google.gson.reflect.TypeToken;
+import com.google.gson.stream.JsonReader;
+import com.google.gson.stream.JsonToken;
+import com.google.gson.stream.JsonWriter;
+import com.google.gson.stream.MalformedJsonException;
+import java.io.EOFException;
+import java.io.IOException;
+import java.io.Reader;
+import java.io.StringReader;
+import java.io.StringWriter;
+import java.io.Writer;
+import java.lang.reflect.Type;
+import java.math.BigDecimal;
+import java.math.BigInteger;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * This is the main class for using Gson. Gson is typically used by first constructing a
+ * Gson instance and then invoking {@link #toJson(Object)} or {@link #fromJson(String, Class)}
+ * methods on it.
+ *
+ * <p>You can create a Gson instance by invoking {@code new Gson()} if the default configuration
+ * is all you need. You can also use {@link GsonBuilder} to build a Gson instance with various
+ * configuration options such as versioning support, pretty printing, custom
+ * {@link JsonSerializer}s, {@link JsonDeserializer}s, and {@link InstanceCreator}s.</p>
+ *
+ * <p>Here is an example of how Gson is used for a simple Class:
+ *
+ * <pre>
+ * Gson gson = new Gson(); // Or use new GsonBuilder().create();
+ * MyType target = new MyType();
+ * String json = gson.toJson(target); // serializes target to Json
+ * MyType target2 = gson.fromJson(json, MyType.class); // deserializes json into target2
+ * </pre></p>
+ *
+ * <p>If the object that your are serializing/deserializing is a {@code ParameterizedType}
+ * (i.e. contains at least one type parameter and may be an array) then you must use the
+ * {@link #toJson(Object, Type)} or {@link #fromJson(String, Type)} method.  Here is an
+ * example for serializing and deserialing a {@code ParameterizedType}:
+ *
+ * <pre>
+ * Type listType = new TypeToken&lt;List&lt;String&gt;&gt;() {}.getType();
+ * List&lt;String&gt; target = new LinkedList&lt;String&gt;();
+ * target.add("blah");
+ *
+ * Gson gson = new Gson();
+ * String json = gson.toJson(target, listType);
+ * List&lt;String&gt; target2 = gson.fromJson(json, listType);
+ * </pre></p>
+ *
+ * <p>See the <a href="https://sites.google.com/site/gson/gson-user-guide">Gson User Guide</a>
+ * for a more complete set of examples.</p>
+ *
+ * @see com.google.gson.reflect.TypeToken
+ *
+ * @author Inderjeet Singh
+ * @author Joel Leitch
+ */
+public final class Gson {
+  static final boolean DEFAULT_JSON_NON_EXECUTABLE = false;
+
+  private static final String JSON_NON_EXECUTABLE_PREFIX = ")]}'\n";
+
+  /**
+   * This thread local guards against reentrant calls to getAdapter(). In
+   * certain object graphs, creating an adapter for a type may recursively
+   * require an adapter for the same type! Without intervention, the recursive
+   * lookup would stack overflow. We cheat by returning a proxy type adapter.
+   * The proxy is wired up once the initial adapter has been created.
+   */
+  private final ThreadLocal<Map<TypeToken<?>, FutureTypeAdapter<?>>> calls
+      = new ThreadLocal<Map<TypeToken<?>, FutureTypeAdapter<?>>>() {
+    @Override protected Map<TypeToken<?>, FutureTypeAdapter<?>> initialValue() {
+      return new HashMap<TypeToken<?>, FutureTypeAdapter<?>>();
+    }
+  };
+
+  private final Map<TypeToken<?>, TypeAdapter<?>> typeTokenCache
+      = Collections.synchronizedMap(new HashMap<TypeToken<?>, TypeAdapter<?>>());
+
+  private final List<TypeAdapterFactory> factories;
+  private final ConstructorConstructor constructorConstructor;
+
+  private final boolean serializeNulls;
+  private final boolean htmlSafe;
+  private final boolean generateNonExecutableJson;
+  private final boolean prettyPrinting;
+
+  final JsonDeserializationContext deserializationContext = new JsonDeserializationContext() {
+    @SuppressWarnings("unchecked")
+	public <T> T deserialize(JsonElement json, Type typeOfT) throws JsonParseException {
+      return (T) fromJson(json, typeOfT);
+    }
+  };
+
+  final JsonSerializationContext serializationContext = new JsonSerializationContext() {
+    public JsonElement serialize(Object src) {
+      return toJsonTree(src);
+    }
+    public JsonElement serialize(Object src, Type typeOfSrc) {
+      return toJsonTree(src, typeOfSrc);
+    }
+  };
+
+  /**
+   * Constructs a Gson object with default configuration. The default configuration has the
+   * following settings:
+   * <ul>
+   *   <li>The JSON generated by <code>toJson</code> methods is in compact representation. This
+   *   means that all the unneeded white-space is removed. You can change this behavior with
+   *   {@link GsonBuilder#setPrettyPrinting()}. </li>
+   *   <li>The generated JSON omits all the fields that are null. Note that nulls in arrays are
+   *   kept as is since an array is an ordered list. Moreover, if a field is not null, but its
+   *   generated JSON is empty, the field is kept. You can configure Gson to serialize null values
+   *   by setting {@link GsonBuilder#serializeNulls()}.</li>
+   *   <li>Gson provides default serialization and deserialization for Enums, {@link Map},
+   *   {@link java.net.URL}, {@link java.net.URI}, {@link java.util.Locale}, {@link java.util.Date},
+   *   {@link java.math.BigDecimal}, and {@link java.math.BigInteger} classes. If you would prefer
+   *   to change the default representation, you can do so by registering a type adapter through
+   *   {@link GsonBuilder#registerTypeAdapter(Type, Object)}. </li>
+   *   <li>The default Date format is same as {@link java.text.DateFormat#DEFAULT}. This format
+   *   ignores the millisecond portion of the date during serialization. You can change
+   *   this by invoking {@link GsonBuilder#setDateFormat(int)} or
+   *   {@link GsonBuilder#setDateFormat(String)}. </li>
+   *   <li>By default, Gson ignores the {@link com.google.gson.annotations.Expose} annotation.
+   *   You can enable Gson to serialize/deserialize only those fields marked with this annotation
+   *   through {@link GsonBuilder#excludeFieldsWithoutExposeAnnotation()}. </li>
+   *   <li>By default, Gson ignores the {@link com.google.gson.annotations.Since} annotation. You
+   *   can enable Gson to use this annotation through {@link GsonBuilder#setVersion(double)}.</li>
+   *   <li>The default field naming policy for the output Json is same as in Java. So, a Java class
+   *   field <code>versionNumber</code> will be output as <code>&quot;versionNumber@quot;</code> in
+   *   Json. The same rules are applied for mapping incoming Json to the Java classes. You can
+   *   change this policy through {@link GsonBuilder#setFieldNamingPolicy(FieldNamingPolicy)}.</li>
+   *   <li>By default, Gson excludes <code>transient</code> or <code>static</code> fields from
+   *   consideration for serialization and deserialization. You can change this behavior through
+   *   {@link GsonBuilder#excludeFieldsWithModifiers(int...)}.</li>
+   * </ul>
+   */
+  public Gson() {
+    this(Excluder.DEFAULT, FieldNamingPolicy.IDENTITY,
+        Collections.<Type, InstanceCreator<?>>emptyMap(), false, false, DEFAULT_JSON_NON_EXECUTABLE,
+        true, false, false, LongSerializationPolicy.DEFAULT,
+        Collections.<TypeAdapterFactory>emptyList());
+  }
+
+  Gson(final Excluder excluder, final FieldNamingStrategy fieldNamingPolicy,
+      final Map<Type, InstanceCreator<?>> instanceCreators, boolean serializeNulls,
+      boolean complexMapKeySerialization, boolean generateNonExecutableGson, boolean htmlSafe,
+      boolean prettyPrinting, boolean serializeSpecialFloatingPointValues,
+      LongSerializationPolicy longSerializationPolicy,
+      List<TypeAdapterFactory> typeAdapterFactories) {
+    this.constructorConstructor = new ConstructorConstructor(instanceCreators);
+    this.serializeNulls = serializeNulls;
+    this.generateNonExecutableJson = generateNonExecutableGson;
+    this.htmlSafe = htmlSafe;
+    this.prettyPrinting = prettyPrinting;
+
+    TypeAdapterFactory reflectiveTypeAdapterFactory = new ReflectiveTypeAdapterFactory(
+        constructorConstructor, fieldNamingPolicy, excluder);
+
+    ConstructorConstructor constructorConstructor = new ConstructorConstructor();
+    List<TypeAdapterFactory> factories = new ArrayList<TypeAdapterFactory>();
+
+    // built-in type adapters that cannot be overridden
+    factories.add(TypeAdapters.STRING_FACTORY);
+    factories.add(TypeAdapters.INTEGER_FACTORY);
+    factories.add(TypeAdapters.BOOLEAN_FACTORY);
+    factories.add(TypeAdapters.BYTE_FACTORY);
+    factories.add(TypeAdapters.SHORT_FACTORY);
+    factories.add(TypeAdapters.newFactory(long.class, Long.class,
+            longAdapter(longSerializationPolicy)));
+    factories.add(TypeAdapters.newFactory(double.class, Double.class,
+            doubleAdapter(serializeSpecialFloatingPointValues)));
+    factories.add(TypeAdapters.newFactory(float.class, Float.class,
+            floatAdapter(serializeSpecialFloatingPointValues)));
+    factories.add(excluder);
+    factories.add(TypeAdapters.NUMBER_FACTORY);
+    factories.add(TypeAdapters.CHARACTER_FACTORY);
+    factories.add(TypeAdapters.STRING_BUILDER_FACTORY);
+    factories.add(TypeAdapters.STRING_BUFFER_FACTORY);
+    factories.add(TypeAdapters.newFactory(BigDecimal.class, new BigDecimalTypeAdapter()));
+    factories.add(TypeAdapters.newFactory(BigInteger.class, new BigIntegerTypeAdapter()));
+    factories.add(TypeAdapters.JSON_ELEMENT_FACTORY);
+    factories.add(ObjectTypeAdapter.FACTORY);
+
+    // user's type adapters
+    factories.addAll(typeAdapterFactories);
+
+    // built-in type adapters that can be overridden
+    factories.add(new CollectionTypeAdapterFactory(constructorConstructor));
+    factories.add(TypeAdapters.URL_FACTORY);
+    factories.add(TypeAdapters.URI_FACTORY);
+    factories.add(TypeAdapters.UUID_FACTORY);
+    factories.add(TypeAdapters.LOCALE_FACTORY);
+    factories.add(TypeAdapters.INET_ADDRESS_FACTORY);
+    factories.add(TypeAdapters.BIT_SET_FACTORY);
+    factories.add(DateTypeAdapter.FACTORY);
+    factories.add(TypeAdapters.CALENDAR_FACTORY);
+    factories.add(TimeTypeAdapter.FACTORY);
+    factories.add(SqlDateTypeAdapter.FACTORY);
+    factories.add(TypeAdapters.TIMESTAMP_FACTORY);
+    factories.add(new MapTypeAdapterFactory(constructorConstructor, complexMapKeySerialization));
+    factories.add(ArrayTypeAdapter.FACTORY);
+    factories.add(TypeAdapters.ENUM_FACTORY);
+    factories.add(TypeAdapters.CLASS_FACTORY);
+    factories.add(reflectiveTypeAdapterFactory);
+
+    this.factories = Collections.unmodifiableList(factories);
+  }
+
+  private TypeAdapter<Number> doubleAdapter(boolean serializeSpecialFloatingPointValues) {
+    if (serializeSpecialFloatingPointValues) {
+      return TypeAdapters.DOUBLE;
+    }
+    return new TypeAdapter<Number>() {
+      @Override public Double read(JsonReader in) throws IOException {
+        if (in.peek() == JsonToken.NULL) {
+          in.nextNull();
+          return null;
+        }
+        return in.nextDouble();
+      }
+      @Override public void write(JsonWriter out, Number value) throws IOException {
+        if (value == null) {
+          out.nullValue();
+          return;
+        }
+        double doubleValue = value.doubleValue();
+        checkValidFloatingPoint(doubleValue);
+        out.value(value);
+      }
+    };
+  }
+
+  private TypeAdapter<Number> floatAdapter(boolean serializeSpecialFloatingPointValues) {
+    if (serializeSpecialFloatingPointValues) {
+      return TypeAdapters.FLOAT;
+    }
+    return new TypeAdapter<Number>() {
+      @Override public Float read(JsonReader in) throws IOException {
+        if (in.peek() == JsonToken.NULL) {
+          in.nextNull();
+          return null;
+        }
+        return (float) in.nextDouble();
+      }
+      @Override public void write(JsonWriter out, Number value) throws IOException {
+        if (value == null) {
+          out.nullValue();
+          return;
+        }
+        float floatValue = value.floatValue();
+        checkValidFloatingPoint(floatValue);
+        out.value(value);
+      }
+    };
+  }
+
+  private void checkValidFloatingPoint(double value) {
+    if (Double.isNaN(value) || Double.isInfinite(value)) {
+      throw new IllegalArgumentException(value
+          + " is not a valid double value as per JSON specification. To override this"
+          + " behavior, use GsonBuilder.serializeSpecialDoubleValues() method.");
+    }
+  }
+
+  private TypeAdapter<Number> longAdapter(LongSerializationPolicy longSerializationPolicy) {
+    if (longSerializationPolicy == LongSerializationPolicy.DEFAULT) {
+      return TypeAdapters.LONG;
+    }
+    return new TypeAdapter<Number>() {
+      @Override public Number read(JsonReader in) throws IOException {
+        if (in.peek() == JsonToken.NULL) {
+          in.nextNull();
+          return null;
+        }
+        return in.nextLong();
+      }
+      @Override public void write(JsonWriter out, Number value) throws IOException {
+        if (value == null) {
+          out.nullValue();
+          return;
+        }
+        out.value(value.toString());
+      }
+    };
+  }
+
+  /**
+   * Returns the type adapter for {@code} type.
+   *
+   * @throws IllegalArgumentException if this GSON cannot serialize and
+   *     deserialize {@code type}.
+   */
+  @SuppressWarnings("unchecked")
+  public <T> TypeAdapter<T> getAdapter(TypeToken<T> type) {
+    TypeAdapter<?> cached = typeTokenCache.get(type);
+    if (cached != null) {
+      return (TypeAdapter<T>) cached;
+    }
+
+    Map<TypeToken<?>, FutureTypeAdapter<?>> threadCalls = calls.get();
+    // the key and value type parameters always agree
+    FutureTypeAdapter<T> ongoingCall = (FutureTypeAdapter<T>) threadCalls.get(type);
+    if (ongoingCall != null) {
+      return ongoingCall;
+    }
+
+    FutureTypeAdapter<T> call = new FutureTypeAdapter<T>();
+    threadCalls.put(type, call);
+    try {
+      for (TypeAdapterFactory factory : factories) {
+        TypeAdapter<T> candidate = factory.create(this, type);
+        if (candidate != null) {
+          call.setDelegate(candidate);
+          typeTokenCache.put(type, candidate);
+          return candidate;
+        }
+      }
+      throw new IllegalArgumentException("GSON cannot handle " + type);
+    } finally {
+      threadCalls.remove(type);
+    }
+  }
+
+  static {
+    GsonInternalAccess.INSTANCE = new GsonInternalAccess() {
+      @Override public <T> TypeAdapter<T> getNextAdapter(
+          Gson gson, TypeAdapterFactory skipPast, TypeToken<T> type) {
+        boolean skipPastFound = false;
+
+        for (TypeAdapterFactory factory : gson.factories) {
+          if (!skipPastFound) {
+            if (factory == skipPast) {
+              skipPastFound = true;
+            }
+            continue;
+          }
+
+          TypeAdapter<T> candidate = factory.create(gson, type);
+          if (candidate != null) {
+            return candidate;
+          }
+        }
+
+        throw new IllegalArgumentException("GSON cannot serialize " + type);
+      }
+    };
+  }
+
+  /**
+   * Returns the type adapter for {@code} type.
+   *
+   * @throws IllegalArgumentException if this GSON cannot serialize and
+   *     deserialize {@code type}.
+   */
+  public <T> TypeAdapter<T> getAdapter(Class<T> type) {
+    return getAdapter(TypeToken.get(type));
+  }
+
+  /**
+   * This method serializes the specified object into its equivalent representation as a tree of
+   * {@link JsonElement}s. This method should be used when the specified object is not a generic
+   * type. This method uses {@link Class#getClass()} to get the type for the specified object, but
+   * the {@code getClass()} loses the generic type information because of the Type Erasure feature
+   * of Java. Note that this method works fine if the any of the object fields are of generic type,
+   * just the object itself should not be of a generic type. If the object is of generic type, use
+   * {@link #toJsonTree(Object, Type)} instead.
+   *
+   * @param src the object for which Json representation is to be created setting for Gson
+   * @return Json representation of {@code src}.
+   * @since 1.4
+   */
+  public JsonElement toJsonTree(Object src) {
+    if (src == null) {
+      return JsonNull.INSTANCE;
+    }
+    return toJsonTree(src, src.getClass());
+  }
+
+  /**
+   * This method serializes the specified object, including those of generic types, into its
+   * equivalent representation as a tree of {@link JsonElement}s. This method must be used if the
+   * specified object is a generic type. For non-generic objects, use {@link #toJsonTree(Object)}
+   * instead.
+   *
+   * @param src the object for which JSON representation is to be created
+   * @param typeOfSrc The specific genericized type of src. You can obtain
+   * this type by using the {@link com.google.gson.reflect.TypeToken} class. For example,
+   * to get the type for {@code Collection<Foo>}, you should use:
+   * <pre>
+   * Type typeOfSrc = new TypeToken&lt;Collection&lt;Foo&gt;&gt;(){}.getType();
+   * </pre>
+   * @return Json representation of {@code src}
+   * @since 1.4
+   */
+  public JsonElement toJsonTree(Object src, Type typeOfSrc) {
+    JsonTreeWriter writer = new JsonTreeWriter();
+    toJson(src, typeOfSrc, writer);
+    return writer.get();
+  }
+
+  /**
+   * This method serializes the specified object into its equivalent Json representation.
+   * This method should be used when the specified object is not a generic type. This method uses
+   * {@link Class#getClass()} to get the type for the specified object, but the
+   * {@code getClass()} loses the generic type information because of the Type Erasure feature
+   * of Java. Note that this method works fine if the any of the object fields are of generic type,
+   * just the object itself should not be of a generic type. If the object is of generic type, use
+   * {@link #toJson(Object, Type)} instead. If you want to write out the object to a
+   * {@link Writer}, use {@link #toJson(Object, Appendable)} instead.
+   *
+   * @param src the object for which Json representation is to be created setting for Gson
+   * @return Json representation of {@code src}.
+   */
+  public String toJson(Object src) {
+    if (src == null) {
+      return toJson(JsonNull.INSTANCE);
+    }
+    return toJson(src, src.getClass());
+  }
+
+  /**
+   * This method serializes the specified object, including those of generic types, into its
+   * equivalent Json representation. This method must be used if the specified object is a generic
+   * type. For non-generic objects, use {@link #toJson(Object)} instead. If you want to write out
+   * the object to a {@link Appendable}, use {@link #toJson(Object, Type, Appendable)} instead.
+   *
+   * @param src the object for which JSON representation is to be created
+   * @param typeOfSrc The specific genericized type of src. You can obtain
+   * this type by using the {@link com.google.gson.reflect.TypeToken} class. For example,
+   * to get the type for {@code Collection<Foo>}, you should use:
+   * <pre>
+   * Type typeOfSrc = new TypeToken&lt;Collection&lt;Foo&gt;&gt;(){}.getType();
+   * </pre>
+   * @return Json representation of {@code src}
+   */
+  public String toJson(Object src, Type typeOfSrc) {
+    StringWriter writer = new StringWriter();
+    toJson(src, typeOfSrc, writer);
+    return writer.toString();
+  }
+
+  /**
+   * This method serializes the specified object into its equivalent Json representation.
+   * This method should be used when the specified object is not a generic type. This method uses
+   * {@link Class#getClass()} to get the type for the specified object, but the
+   * {@code getClass()} loses the generic type information because of the Type Erasure feature
+   * of Java. Note that this method works fine if the any of the object fields are of generic type,
+   * just the object itself should not be of a generic type. If the object is of generic type, use
+   * {@link #toJson(Object, Type, Appendable)} instead.
+   *
+   * @param src the object for which Json representation is to be created setting for Gson
+   * @param writer Writer to which the Json representation needs to be written
+   * @throws JsonIOException if there was a problem writing to the writer
+   * @since 1.2
+   */
+  public void toJson(Object src, Appendable writer) throws JsonIOException {
+    if (src != null) {
+      toJson(src, src.getClass(), writer);
+    } else {
+      toJson(JsonNull.INSTANCE, writer);
+    }
+  }
+
+  /**
+   * This method serializes the specified object, including those of generic types, into its
+   * equivalent Json representation. This method must be used if the specified object is a generic
+   * type. For non-generic objects, use {@link #toJson(Object, Appendable)} instead.
+   *
+   * @param src the object for which JSON representation is to be created
+   * @param typeOfSrc The specific genericized type of src. You can obtain
+   * this type by using the {@link com.google.gson.reflect.TypeToken} class. For example,
+   * to get the type for {@code Collection<Foo>}, you should use:
+   * <pre>
+   * Type typeOfSrc = new TypeToken&lt;Collection&lt;Foo&gt;&gt;(){}.getType();
+   * </pre>
+   * @param writer Writer to which the Json representation of src needs to be written.
+   * @throws JsonIOException if there was a problem writing to the writer
+   * @since 1.2
+   */
+  public void toJson(Object src, Type typeOfSrc, Appendable writer) throws JsonIOException {
+    try {
+      JsonWriter jsonWriter = newJsonWriter(Streams.writerForAppendable(writer));
+      toJson(src, typeOfSrc, jsonWriter);
+    } catch (IOException e) {
+      throw new JsonIOException(e);
+    }
+  }
+
+  /**
+   * Writes the JSON representation of {@code src} of type {@code typeOfSrc} to
+   * {@code writer}.
+   * @throws JsonIOException if there was a problem writing to the writer
+   */
+  @SuppressWarnings("unchecked")
+  public void toJson(Object src, Type typeOfSrc, JsonWriter writer) throws JsonIOException {
+    TypeAdapter<?> adapter = getAdapter(TypeToken.get(typeOfSrc));
+    boolean oldLenient = writer.isLenient();
+    writer.setLenient(true);
+    boolean oldHtmlSafe = writer.isHtmlSafe();
+    writer.setHtmlSafe(htmlSafe);
+    boolean oldSerializeNulls = writer.getSerializeNulls();
+    writer.setSerializeNulls(serializeNulls);
+    try {
+      ((TypeAdapter<Object>) adapter).write(writer, src);
+    } catch (IOException e) {
+      throw new JsonIOException(e);
+    } finally {
+      writer.setLenient(oldLenient);
+      writer.setHtmlSafe(oldHtmlSafe);
+      writer.setSerializeNulls(oldSerializeNulls);
+    }
+  }
+
+  /**
+   * Converts a tree of {@link JsonElement}s into its equivalent JSON representation.
+   *
+   * @param jsonElement root of a tree of {@link JsonElement}s
+   * @return JSON String representation of the tree
+   * @since 1.4
+   */
+  public String toJson(JsonElement jsonElement) {
+    StringWriter writer = new StringWriter();
+    toJson(jsonElement, writer);
+    return writer.toString();
+  }
+
+  /**
+   * Writes out the equivalent JSON for a tree of {@link JsonElement}s.
+   *
+   * @param jsonElement root of a tree of {@link JsonElement}s
+   * @param writer Writer to which the Json representation needs to be written
+   * @throws JsonIOException if there was a problem writing to the writer
+   * @since 1.4
+   */
+  public void toJson(JsonElement jsonElement, Appendable writer) throws JsonIOException {
+    try {
+      JsonWriter jsonWriter = newJsonWriter(Streams.writerForAppendable(writer));
+      toJson(jsonElement, jsonWriter);
+    } catch (IOException e) {
+      throw new RuntimeException(e);
+    }
+  }
+
+  /**
+   * Returns a new JSON writer configured for this GSON and with the non-execute
+   * prefix if that is configured.
+   */
+  private JsonWriter newJsonWriter(Writer writer) throws IOException {
+    if (generateNonExecutableJson) {
+      writer.write(JSON_NON_EXECUTABLE_PREFIX);
+    }
+    JsonWriter jsonWriter = new JsonWriter(writer);
+    if (prettyPrinting) {
+      jsonWriter.setIndent("  ");
+    }
+    jsonWriter.setSerializeNulls(serializeNulls);
+    return jsonWriter;
+  }
+
+  /**
+   * Writes the JSON for {@code jsonElement} to {@code writer}.
+   * @throws JsonIOException if there was a problem writing to the writer
+   */
+  public void toJson(JsonElement jsonElement, JsonWriter writer) throws JsonIOException {
+    boolean oldLenient = writer.isLenient();
+    writer.setLenient(true);
+    boolean oldHtmlSafe = writer.isHtmlSafe();
+    writer.setHtmlSafe(htmlSafe);
+    boolean oldSerializeNulls = writer.getSerializeNulls();
+    writer.setSerializeNulls(serializeNulls);
+    try {
+      Streams.write(jsonElement, writer);
+    } catch (IOException e) {
+      throw new JsonIOException(e);
+    } finally {
+      writer.setLenient(oldLenient);
+      writer.setHtmlSafe(oldHtmlSafe);
+      writer.setSerializeNulls(oldSerializeNulls);
+    }
+  }
+
+  /**
+   * This method deserializes the specified Json into an object of the specified class. It is not
+   * suitable to use if the specified class is a generic type since it will not have the generic
+   * type information because of the Type Erasure feature of Java. Therefore, this method should not
+   * be used if the desired type is a generic type. Note that this method works fine if the any of
+   * the fields of the specified object are generics, just the object itself should not be a
+   * generic type. For the cases when the object is of generic type, invoke
+   * {@link #fromJson(String, Type)}. If you have the Json in a {@link Reader} instead of
+   * a String, use {@link #fromJson(Reader, Class)} instead.
+   *
+   * @param <T> the type of the desired object
+   * @param json the string from which the object is to be deserialized
+   * @param classOfT the class of T
+   * @return an object of type T from the string
+   * @throws JsonSyntaxException if json is not a valid representation for an object of type
+   * classOfT
+   */
+  public <T> T fromJson(String json, Class<T> classOfT) throws JsonSyntaxException {
+    Object object = fromJson(json, (Type) classOfT);
+    return Primitives.wrap(classOfT).cast(object);
+  }
+
+  /**
+   * This method deserializes the specified Json into an object of the specified type. This method
+   * is useful if the specified object is a generic type. For non-generic objects, use
+   * {@link #fromJson(String, Class)} instead. If you have the Json in a {@link Reader} instead of
+   * a String, use {@link #fromJson(Reader, Type)} instead.
+   *
+   * @param <T> the type of the desired object
+   * @param json the string from which the object is to be deserialized
+   * @param typeOfT The specific genericized type of src. You can obtain this type by using the
+   * {@link com.google.gson.reflect.TypeToken} class. For example, to get the type for
+   * {@code Collection<Foo>}, you should use:
+   * <pre>
+   * Type typeOfT = new TypeToken&lt;Collection&lt;Foo&gt;&gt;(){}.getType();
+   * </pre>
+   * @return an object of type T from the string
+   * @throws JsonParseException if json is not a valid representation for an object of type typeOfT
+   * @throws JsonSyntaxException if json is not a valid representation for an object of type
+   */
+  @SuppressWarnings("unchecked")
+  public <T> T fromJson(String json, Type typeOfT) throws JsonSyntaxException {
+    if (json == null) {
+      return null;
+    }
+    StringReader reader = new StringReader(json);
+    T target = (T) fromJson(reader, typeOfT);
+    return target;
+  }
+
+  /**
+   * This method deserializes the Json read from the specified reader into an object of the
+   * specified class. It is not suitable to use if the specified class is a generic type since it
+   * will not have the generic type information because of the Type Erasure feature of Java.
+   * Therefore, this method should not be used if the desired type is a generic type. Note that
+   * this method works fine if the any of the fields of the specified object are generics, just the
+   * object itself should not be a generic type. For the cases when the object is of generic type,
+   * invoke {@link #fromJson(Reader, Type)}. If you have the Json in a String form instead of a
+   * {@link Reader}, use {@link #fromJson(String, Class)} instead.
+   *
+   * @param <T> the type of the desired object
+   * @param json the reader producing the Json from which the object is to be deserialized.
+   * @param classOfT the class of T
+   * @return an object of type T from the string
+   * @throws JsonIOException if there was a problem reading from the Reader
+   * @throws JsonSyntaxException if json is not a valid representation for an object of type
+   * @since 1.2
+   */
+  public <T> T fromJson(Reader json, Class<T> classOfT) throws JsonSyntaxException, JsonIOException {
+    JsonReader jsonReader = new JsonReader(json);
+    Object object = fromJson(jsonReader, classOfT);
+    assertFullConsumption(object, jsonReader);
+    return Primitives.wrap(classOfT).cast(object);
+  }
+
+  /**
+   * This method deserializes the Json read from the specified reader into an object of the
+   * specified type. This method is useful if the specified object is a generic type. For
+   * non-generic objects, use {@link #fromJson(Reader, Class)} instead. If you have the Json in a
+   * String form instead of a {@link Reader}, use {@link #fromJson(String, Type)} instead.
+   *
+   * @param <T> the type of the desired object
+   * @param json the reader producing Json from which the object is to be deserialized
+   * @param typeOfT The specific genericized type of src. You can obtain this type by using the
+   * {@link com.google.gson.reflect.TypeToken} class. For example, to get the type for
+   * {@code Collection<Foo>}, you should use:
+   * <pre>
+   * Type typeOfT = new TypeToken&lt;Collection&lt;Foo&gt;&gt;(){}.getType();
+   * </pre>
+   * @return an object of type T from the json
+   * @throws JsonIOException if there was a problem reading from the Reader
+   * @throws JsonSyntaxException if json is not a valid representation for an object of type
+   * @since 1.2
+   */
+  @SuppressWarnings("unchecked")
+  public <T> T fromJson(Reader json, Type typeOfT) throws JsonIOException, JsonSyntaxException {
+    JsonReader jsonReader = new JsonReader(json);
+    T object = (T) fromJson(jsonReader, typeOfT);
+    assertFullConsumption(object, jsonReader);
+    return object;
+  }
+
+  private static void assertFullConsumption(Object obj, JsonReader reader) {
+    try {
+      if (obj != null && reader.peek() != JsonToken.END_DOCUMENT) {
+        throw new JsonIOException("JSON document was not fully consumed.");
+      }
+    } catch (MalformedJsonException e) {
+      throw new JsonSyntaxException(e);
+    } catch (IOException e) {
+      throw new JsonIOException(e);
+    }
+  }
+
+  /**
+   * Reads the next JSON value from {@code reader} and convert it to an object
+   * of type {@code typeOfT}.
+   * Since Type is not parameterized by T, this method is type unsafe and should be used carefully
+   *
+   * @throws JsonIOException if there was a problem writing to the Reader
+   * @throws JsonSyntaxException if json is not a valid representation for an object of type
+   */
+  @SuppressWarnings("unchecked")
+  public <T> T fromJson(JsonReader reader, Type typeOfT) throws JsonIOException, JsonSyntaxException {
+    boolean isEmpty = true;
+    boolean oldLenient = reader.isLenient();
+    reader.setLenient(true);
+    try {
+      reader.peek();
+      isEmpty = false;
+      TypeAdapter<T> typeAdapter = (TypeAdapter<T>) getAdapter(TypeToken.get(typeOfT));
+      return typeAdapter.read(reader);
+    } catch (EOFException e) {
+      /*
+       * For compatibility with JSON 1.5 and earlier, we return null for empty
+       * documents instead of throwing.
+       */
+      if (isEmpty) {
+        return null;
+      }
+      throw new JsonSyntaxException(e);
+    } catch (IllegalStateException e) {
+      throw new JsonSyntaxException(e);
+    } catch (IOException e) {
+      // TODO(inder): Figure out whether it is indeed right to rethrow this as JsonSyntaxException
+      throw new JsonSyntaxException(e);
+    } finally {
+      reader.setLenient(oldLenient);
+    }
+  }
+
+  /**
+   * This method deserializes the Json read from the specified parse tree into an object of the
+   * specified type. It is not suitable to use if the specified class is a generic type since it
+   * will not have the generic type information because of the Type Erasure feature of Java.
+   * Therefore, this method should not be used if the desired type is a generic type. Note that
+   * this method works fine if the any of the fields of the specified object are generics, just the
+   * object itself should not be a generic type. For the cases when the object is of generic type,
+   * invoke {@link #fromJson(JsonElement, Type)}.
+   * @param <T> the type of the desired object
+   * @param json the root of the parse tree of {@link JsonElement}s from which the object is to
+   * be deserialized
+   * @param classOfT The class of T
+   * @return an object of type T from the json
+   * @throws JsonSyntaxException if json is not a valid representation for an object of type typeOfT
+   * @since 1.3
+   */
+  public <T> T fromJson(JsonElement json, Class<T> classOfT) throws JsonSyntaxException {
+    Object object = fromJson(json, (Type) classOfT);
+    return Primitives.wrap(classOfT).cast(object);
+  }
+
+  /**
+   * This method deserializes the Json read from the specified parse tree into an object of the
+   * specified type. This method is useful if the specified object is a generic type. For
+   * non-generic objects, use {@link #fromJson(JsonElement, Class)} instead.
+   *
+   * @param <T> the type of the desired object
+   * @param json the root of the parse tree of {@link JsonElement}s from which the object is to
+   * be deserialized
+   * @param typeOfT The specific genericized type of src. You can obtain this type by using the
+   * {@link com.google.gson.reflect.TypeToken} class. For example, to get the type for
+   * {@code Collection<Foo>}, you should use:
+   * <pre>
+   * Type typeOfT = new TypeToken&lt;Collection&lt;Foo&gt;&gt;(){}.getType();
+   * </pre>
+   * @return an object of type T from the json
+   * @throws JsonSyntaxException if json is not a valid representation for an object of type typeOfT
+   * @since 1.3
+   */
+  @SuppressWarnings("unchecked")
+  public <T> T fromJson(JsonElement json, Type typeOfT) throws JsonSyntaxException {
+    if (json == null) {
+      return null;
+    }
+    return (T) fromJson(new JsonTreeReader(json), typeOfT);
+  }
+
+  static class FutureTypeAdapter<T> extends TypeAdapter<T> {
+    private TypeAdapter<T> delegate;
+
+    public void setDelegate(TypeAdapter<T> typeAdapter) {
+      if (delegate != null) {
+        throw new AssertionError();
+      }
+      delegate = typeAdapter;
+    }
+
+    @Override public T read(JsonReader in) throws IOException {
+      if (delegate == null) {
+        throw new IllegalStateException();
+      }
+      return delegate.read(in);
+    }
+
+    @Override public void write(JsonWriter out, T value) throws IOException {
+      if (delegate == null) {
+        throw new IllegalStateException();
+      }
+      delegate.write(out, value);
+    }
+  }
+
+  @Override
+  public String toString() {
+  	StringBuilder sb = new StringBuilder("{")
+  	    .append("serializeNulls:").append(serializeNulls)
+  	    .append("factories:").append(factories)
+        .append(",instanceCreators:").append(constructorConstructor)
+        .append("}");
+  	return sb.toString();
+  }
+}

src/com/google/gson/GsonBuilder.java

@@ -0,0 +1,567 @@
+/*
+ * Copyright (C) 2008 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson;
+
+import java.lang.reflect.Type;
+import java.sql.Timestamp;
+import java.text.DateFormat;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Date;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import com.google.gson.internal.$Gson$Preconditions;
+import com.google.gson.internal.Excluder;
+import com.google.gson.internal.Primitives;
+import com.google.gson.internal.bind.TypeAdapters;
+import com.google.gson.reflect.TypeToken;
+
+/**
+ * <p>Use this builder to construct a {@link Gson} instance when you need to set configuration
+ * options other than the default. For {@link Gson} with default configuration, it is simpler to
+ * use {@code new Gson()}. {@code GsonBuilder} is best used by creating it, and then invoking its
+ * various configuration methods, and finally calling create.</p>
+ *
+ * <p>The following is an example shows how to use the {@code GsonBuilder} to construct a Gson
+ * instance:
+ *
+ * <pre>
+ * Gson gson = new GsonBuilder()
+ *     .registerTypeAdapter(Id.class, new IdTypeAdapter())
+ *     .enableComplexMapKeySerialization()
+ *     .serializeNulls()
+ *     .setDateFormat(DateFormat.LONG)
+ *     .setFieldNamingPolicy(FieldNamingPolicy.UPPER_CAMEL_CASE)
+ *     .setPrettyPrinting()
+ *     .setVersion(1.0)
+ *     .create();
+ * </pre></p>
+ *
+ * <p>NOTES:
+ * <ul>
+ * <li> the order of invocation of configuration methods does not matter.</li>
+ * <li> The default serialization of {@link Date} and its subclasses in Gson does
+ *  not contain time-zone information. So, if you are using date/time instances,
+ *  use {@code GsonBuilder} and its {@code setDateFormat} methods.</li>
+ *  </ul>
+ * </p>
+ *
+ * @author Inderjeet Singh
+ * @author Joel Leitch
+ * @author Jesse Wilson
+ */
+public final class GsonBuilder {
+  private Excluder excluder = Excluder.DEFAULT;
+  private LongSerializationPolicy longSerializationPolicy = LongSerializationPolicy.DEFAULT;
+  private FieldNamingStrategy fieldNamingPolicy = FieldNamingPolicy.IDENTITY;
+  private final Map<Type, InstanceCreator<?>> instanceCreators
+      = new HashMap<Type, InstanceCreator<?>>();
+  private final List<TypeAdapterFactory> factories = new ArrayList<TypeAdapterFactory>();
+  /** tree-style hierarchy factories. These come after factories for backwards compatibility. */
+  private final List<TypeAdapterFactory> hierarchyFactories = new ArrayList<TypeAdapterFactory>();
+  private boolean serializeNulls;
+  private String datePattern;
+  private int dateStyle = DateFormat.DEFAULT;
+  private int timeStyle = DateFormat.DEFAULT;
+  private boolean complexMapKeySerialization;
+  private boolean serializeSpecialFloatingPointValues;
+  private boolean escapeHtmlChars = true;
+  private boolean prettyPrinting;
+  private boolean generateNonExecutableJson;
+
+  /**
+   * Creates a GsonBuilder instance that can be used to build Gson with various configuration
+   * settings. GsonBuilder follows the builder pattern, and it is typically used by first
+   * invoking various configuration methods to set desired options, and finally calling
+   * {@link #create()}.
+   */
+  public GsonBuilder() {
+  }
+
+  /**
+   * Configures Gson to enable versioning support.
+   *
+   * @param ignoreVersionsAfter any field or type marked with a version higher than this value
+   * are ignored during serialization or deserialization.
+   * @return a reference to this {@code GsonBuilder} object to fulfill the "Builder" pattern
+   */
+  public GsonBuilder setVersion(double ignoreVersionsAfter) {
+    excluder = excluder.withVersion(ignoreVersionsAfter);
+    return this;
+  }
+
+  /**
+   * Configures Gson to excludes all class fields that have the specified modifiers. By default,
+   * Gson will exclude all fields marked transient or static. This method will override that
+   * behavior.
+   *
+   * @param modifiers the field modifiers. You must use the modifiers specified in the
+   * {@link java.lang.reflect.Modifier} class. For example,
+   * {@link java.lang.reflect.Modifier#TRANSIENT},
+   * {@link java.lang.reflect.Modifier#STATIC}.
+   * @return a reference to this {@code GsonBuilder} object to fulfill the "Builder" pattern
+   */
+  public GsonBuilder excludeFieldsWithModifiers(int... modifiers) {
+    excluder = excluder.withModifiers(modifiers);
+    return this;
+  }
+
+  /**
+   * Makes the output JSON non-executable in Javascript by prefixing the generated JSON with some
+   * special text. This prevents attacks from third-party sites through script sourcing. See
+   * <a href="http://code.google.com/p/google-gson/issues/detail?id=42">Gson Issue 42</a>
+   * for details.
+   *
+   * @return a reference to this {@code GsonBuilder} object to fulfill the "Builder" pattern
+   * @since 1.3
+   */
+  public GsonBuilder generateNonExecutableJson() {
+    this.generateNonExecutableJson = true;
+    return this;
+  }
+
+  /**
+   * Configures Gson to exclude all fields from consideration for serialization or deserialization
+   * that do not have the {@link com.google.gson.annotations.Expose} annotation.
+   *
+   * @return a reference to this {@code GsonBuilder} object to fulfill the "Builder" pattern
+   */
+  public GsonBuilder excludeFieldsWithoutExposeAnnotation() {
+    excluder = excluder.excludeFieldsWithoutExposeAnnotation();
+    return this;
+  }
+
+  /**
+   * Configure Gson to serialize null fields. By default, Gson omits all fields that are null
+   * during serialization.
+   *
+   * @return a reference to this {@code GsonBuilder} object to fulfill the "Builder" pattern
+   * @since 1.2
+   */
+  public GsonBuilder serializeNulls() {
+    this.serializeNulls = true;
+    return this;
+  }
+
+  /**
+   * Enabling this feature will only change the serialized form if the map key is
+   * a complex type (i.e. non-primitive) in its <strong>serialized</strong> JSON
+   * form. The default implementation of map serialization uses {@code toString()}
+   * on the key; however, when this is called then one of the following cases
+   * apply:
+   *
+   * <h3>Maps as JSON objects</h3>
+   * For this case, assume that a type adapter is registered to serialize and
+   * deserialize some {@code Point} class, which contains an x and y coordinate,
+   * to/from the JSON Primitive string value {@code "(x,y)"}. The Java map would
+   * then be serialized as a {@link JsonObject}.
+   *
+   * <p>Below is an example:
+   * <pre>  {@code
+   *   Gson gson = new GsonBuilder()
+   *       .register(Point.class, new MyPointTypeAdapter())
+   *       .enableComplexMapKeySerialization()
+   *       .create();
+   *
+   *   Map<Point, String> original = new LinkedHashMap<Point, String>();
+   *   original.put(new Point(5, 6), "a");
+   *   original.put(new Point(8, 8), "b");
+   *   System.out.println(gson.toJson(original, type));
+   * }</pre>
+   * The above code prints this JSON object:<pre>  {@code
+   *   {
+   *     "(5,6)": "a",
+   *     "(8,8)": "b"
+   *   }
+   * }</pre>
+   *
+   * <h3>Maps as JSON arrays</h3>
+   * For this case, assume that a type adapter was NOT registered for some
+   * {@code Point} class, but rather the default Gson serialization is applied.
+   * In this case, some {@code new Point(2,3)} would serialize as {@code
+   * {"x":2,"y":5}}.
+   *
+   * <p>Given the assumption above, a {@code Map<Point, String>} will be
+   * serialize as an array of arrays (can be viewed as an entry set of pairs).
+   *
+   * <p>Below is an example of serializing complex types as JSON arrays:
+   * <pre> {@code
+   *   Gson gson = new GsonBuilder()
+   *       .enableComplexMapKeySerialization()
+   *       .create();
+   *
+   *   Map<Point, String> original = new LinkedHashMap<Point, String>();
+   *   original.put(new Point(5, 6), "a");
+   *   original.put(new Point(8, 8), "b");
+   *   System.out.println(gson.toJson(original, type));
+   * }
+   *
+   * The JSON output would look as follows:
+   * <pre>   {@code
+   *   [
+   *     [
+   *       {
+   *         "x": 5,
+   *         "y": 6
+   *       },
+   *       "a"
+   *     ],
+   *     [
+   *       {
+   *         "x": 8,
+   *         "y": 8
+   *       },
+   *       "b"
+   *     ]
+   *   ]
+   * }</pre>
+   *
+   * @return a reference to this {@code GsonBuilder} object to fulfill the "Builder" pattern
+   * @since 1.7
+   */
+  public GsonBuilder enableComplexMapKeySerialization() {
+    complexMapKeySerialization = true;
+    return this;
+  }
+
+  /**
+   * Configures Gson to exclude inner classes during serialization.
+   *
+   * @return a reference to this {@code GsonBuilder} object to fulfill the "Builder" pattern
+   * @since 1.3
+   */
+  public GsonBuilder disableInnerClassSerialization() {
+    excluder = excluder.disableInnerClassSerialization();
+    return this;
+  }
+
+  /**
+   * Configures Gson to apply a specific serialization policy for {@code Long} and {@code long}
+   * objects.
+   *
+   * @param serializationPolicy the particular policy to use for serializing longs.
+   * @return a reference to this {@code GsonBuilder} object to fulfill the "Builder" pattern
+   * @since 1.3
+   */
+  public GsonBuilder setLongSerializationPolicy(LongSerializationPolicy serializationPolicy) {
+    this.longSerializationPolicy = serializationPolicy;
+    return this;
+  }
+
+  /**
+   * Configures Gson to apply a specific naming policy to an object's field during serialization
+   * and deserialization.
+   *
+   * @param namingConvention the JSON field naming convention to use for serialization and
+   * deserialization.
+   * @return a reference to this {@code GsonBuilder} object to fulfill the "Builder" pattern
+   */
+  public GsonBuilder setFieldNamingPolicy(FieldNamingPolicy namingConvention) {
+    this.fieldNamingPolicy = namingConvention;
+    return this;
+  }
+
+  /**
+   * Configures Gson to apply a specific naming policy strategy to an object's field during
+   * serialization and deserialization.
+   *
+   * @param fieldNamingStrategy the actual naming strategy to apply to the fields
+   * @return a reference to this {@code GsonBuilder} object to fulfill the "Builder" pattern
+   * @since 1.3
+   */
+  public GsonBuilder setFieldNamingStrategy(FieldNamingStrategy fieldNamingStrategy) {
+    this.fieldNamingPolicy = fieldNamingStrategy;
+    return this;
+  }
+
+  /**
+   * Configures Gson to apply a set of exclusion strategies during both serialization and
+   * deserialization. Each of the {@code strategies} will be applied as a disjunction rule.
+   * This means that if one of the {@code strategies} suggests that a field (or class) should be
+   * skipped then that field (or object) is skipped during serializaiton/deserialization.
+   *
+   * @param strategies the set of strategy object to apply during object (de)serialization.
+   * @return a reference to this {@code GsonBuilder} object to fulfill the "Builder" pattern
+   * @since 1.4
+   */
+  public GsonBuilder setExclusionStrategies(ExclusionStrategy... strategies) {
+    for (ExclusionStrategy strategy : strategies) {
+      excluder = excluder.withExclusionStrategy(strategy, true, true);
+    }
+    return this;
+  }
+
+  /**
+   * Configures Gson to apply the passed in exclusion strategy during serialization.
+   * If this method is invoked numerous times with different exclusion strategy objects
+   * then the exclusion strategies that were added will be applied as a disjunction rule.
+   * This means that if one of the added exclusion strategies suggests that a field (or
+   * class) should be skipped then that field (or object) is skipped during its
+   * serialization.
+   *
+   * @param strategy an exclusion strategy to apply during serialization.
+   * @return a reference to this {@code GsonBuilder} object to fulfill the "Builder" pattern
+   * @since 1.7
+   */
+  public GsonBuilder addSerializationExclusionStrategy(ExclusionStrategy strategy) {
+    excluder = excluder.withExclusionStrategy(strategy, true, false);
+    return this;
+  }
+
+  /**
+   * Configures Gson to apply the passed in exclusion strategy during deserialization.
+   * If this method is invoked numerous times with different exclusion strategy objects
+   * then the exclusion strategies that were added will be applied as a disjunction rule.
+   * This means that if one of the added exclusion strategies suggests that a field (or
+   * class) should be skipped then that field (or object) is skipped during its
+   * deserialization.
+   *
+   * @param strategy an exclusion strategy to apply during deserialization.
+   * @return a reference to this {@code GsonBuilder} object to fulfill the "Builder" pattern
+   * @since 1.7
+   */
+  public GsonBuilder addDeserializationExclusionStrategy(ExclusionStrategy strategy) {
+    excluder = excluder.withExclusionStrategy(strategy, false, true);
+    return this;
+  }
+
+  /**
+   * Configures Gson to output Json that fits in a page for pretty printing. This option only
+   * affects Json serialization.
+   *
+   * @return a reference to this {@code GsonBuilder} object to fulfill the "Builder" pattern
+   */
+  public GsonBuilder setPrettyPrinting() {
+    prettyPrinting = true;
+    return this;
+  }
+
+  /**
+   * By default, Gson escapes HTML characters such as &lt; &gt; etc. Use this option to configure
+   * Gson to pass-through HTML characters as is.
+   *
+   * @return a reference to this {@code GsonBuilder} object to fulfill the "Builder" pattern
+   * @since 1.3
+   */
+  public GsonBuilder disableHtmlEscaping() {
+    this.escapeHtmlChars = false;
+    return this;
+  }
+
+  /**
+   * Configures Gson to serialize {@code Date} objects according to the pattern provided. You can
+   * call this method or {@link #setDateFormat(int)} multiple times, but only the last invocation
+   * will be used to decide the serialization format.
+   *
+   * <p>The date format will be used to serialize and deserialize {@link java.util.Date}, {@link
+   * java.sql.Timestamp} and {@link java.sql.Date}.
+   *
+   * <p>Note that this pattern must abide by the convention provided by {@code SimpleDateFormat}
+   * class. See the documentation in {@link java.text.SimpleDateFormat} for more information on
+   * valid date and time patterns.</p>
+   *
+   * @param pattern the pattern that dates will be serialized/deserialized to/from
+   * @return a reference to this {@code GsonBuilder} object to fulfill the "Builder" pattern
+   * @since 1.2
+   */
+  public GsonBuilder setDateFormat(String pattern) {
+    // TODO(Joel): Make this fail fast if it is an invalid date format
+    this.datePattern = pattern;
+    return this;
+  }
+
+  /**
+   * Configures Gson to to serialize {@code Date} objects according to the style value provided.
+   * You can call this method or {@link #setDateFormat(String)} multiple times, but only the last
+   * invocation will be used to decide the serialization format.
+   *
+   * <p>Note that this style value should be one of the predefined constants in the
+   * {@code DateFormat} class. See the documentation in {@link java.text.DateFormat} for more
+   * information on the valid style constants.</p>
+   *
+   * @param style the predefined date style that date objects will be serialized/deserialized
+   * to/from
+   * @return a reference to this {@code GsonBuilder} object to fulfill the "Builder" pattern
+   * @since 1.2
+   */
+  public GsonBuilder setDateFormat(int style) {
+    this.dateStyle = style;
+    this.datePattern = null;
+    return this;
+  }
+
+  /**
+   * Configures Gson to to serialize {@code Date} objects according to the style value provided.
+   * You can call this method or {@link #setDateFormat(String)} multiple times, but only the last
+   * invocation will be used to decide the serialization format.
+   *
+   * <p>Note that this style value should be one of the predefined constants in the
+   * {@code DateFormat} class. See the documentation in {@link java.text.DateFormat} for more
+   * information on the valid style constants.</p>
+   *
+   * @param dateStyle the predefined date style that date objects will be serialized/deserialized
+   * to/from
+   * @param timeStyle the predefined style for the time portion of the date objects
+   * @return a reference to this {@code GsonBuilder} object to fulfill the "Builder" pattern
+   * @since 1.2
+   */
+  public GsonBuilder setDateFormat(int dateStyle, int timeStyle) {
+    this.dateStyle = dateStyle;
+    this.timeStyle = timeStyle;
+    this.datePattern = null;
+    return this;
+  }
+
+  /**
+   * Configures Gson for custom serialization or deserialization. This method combines the
+   * registration of an {@link TypeAdapter}, {@link InstanceCreator}, {@link JsonSerializer}, and a
+   * {@link JsonDeserializer}. It is best used when a single object {@code typeAdapter} implements
+   * all the required interfaces for custom serialization with Gson. If a type adapter was
+   * previously registered for the specified {@code type}, it is overwritten.
+   *
+   * @param type the type definition for the type adapter being registered
+   * @param typeAdapter This object must implement at least one of the {@link TypeAdapter},
+   * {@link InstanceCreator}, {@link JsonSerializer}, and a {@link JsonDeserializer} interfaces.
+   * @return a reference to this {@code GsonBuilder} object to fulfill the "Builder" pattern
+   */
+  @SuppressWarnings({"unchecked", "rawtypes"})
+  public GsonBuilder registerTypeAdapter(Type type, Object typeAdapter) {
+    $Gson$Preconditions.checkArgument(typeAdapter instanceof JsonSerializer<?>
+        || typeAdapter instanceof JsonDeserializer<?>
+        || typeAdapter instanceof InstanceCreator<?>
+        || typeAdapter instanceof TypeAdapter<?>);
+    if (Primitives.isPrimitive(type) || Primitives.isWrapperType(type)) {
+      throw new IllegalArgumentException(
+          "Cannot register type adapters for " + type);
+    }
+    if (typeAdapter instanceof InstanceCreator<?>) {
+      instanceCreators.put(type, (InstanceCreator) typeAdapter);
+    }
+    if (typeAdapter instanceof JsonSerializer<?> || typeAdapter instanceof JsonDeserializer<?>) {
+      TypeToken<?> typeToken = TypeToken.get(type);
+      factories.add(TreeTypeAdapter.newFactoryWithMatchRawType(typeToken, typeAdapter));
+    }
+    if (typeAdapter instanceof TypeAdapter<?>) {
+      factories.add(TypeAdapters.newFactory(TypeToken.get(type), (TypeAdapter)typeAdapter));
+    }
+    return this;
+  }
+
+  /**
+   * Register a factory for type adapters. Registering a factory is useful when the type
+   * adapter needs to be configured based on the type of the field being processed. Gson
+   * is designed to handle a large number of factories, so you should consider registering
+   * them to be at par with registering an individual type adapter.
+   *
+   * @since 2.1
+   */
+  public GsonBuilder registerTypeAdapterFactory(TypeAdapterFactory factory) {
+    factories.add(factory);
+    return this;
+  }
+
+  /**
+   * Configures Gson for custom serialization or deserialization for an inheritance type hierarchy.
+   * This method combines the registration of a {@link TypeAdapter}, {@link JsonSerializer} and
+   * a {@link JsonDeserializer}. If a type adapter was previously registered for the specified
+   * type hierarchy, it is overridden. If a type adapter is registered for a specific type in
+   * the type hierarchy, it will be invoked instead of the one registered for the type hierarchy.
+   *
+   * @param baseType the class definition for the type adapter being registered for the base class
+   *        or interface
+   * @param typeAdapter This object must implement at least one of {@link TypeAdapter}, 
+   *        {@link JsonSerializer} or {@link JsonDeserializer} interfaces.
+   * @return a reference to this {@code GsonBuilder} object to fulfill the "Builder" pattern
+   * @since 1.7
+   */
+  @SuppressWarnings({"unchecked", "rawtypes"})
+  public GsonBuilder registerTypeHierarchyAdapter(Class<?> baseType, Object typeAdapter) {
+    $Gson$Preconditions.checkArgument(typeAdapter instanceof JsonSerializer<?>
+        || typeAdapter instanceof JsonDeserializer<?>
+        || typeAdapter instanceof TypeAdapter<?>);
+    if (typeAdapter instanceof JsonDeserializer || typeAdapter instanceof JsonSerializer) {
+      hierarchyFactories.add(0,
+          TreeTypeAdapter.newTypeHierarchyFactory(baseType, typeAdapter));
+    }
+    if (typeAdapter instanceof TypeAdapter<?>) {
+      factories.add(TypeAdapters.newTypeHierarchyFactory(baseType, (TypeAdapter)typeAdapter));
+    }
+    return this;
+  }
+
+  /**
+   * Section 2.4 of <a href="http://www.ietf.org/rfc/rfc4627.txt">JSON specification</a> disallows
+   * special double values (NaN, Infinity, -Infinity). However,
+   * <a href="http://www.ecma-international.org/publications/files/ECMA-ST/Ecma-262.pdf">Javascript
+   * specification</a> (see section 4.3.20, 4.3.22, 4.3.23) allows these values as valid Javascript
+   * values. Moreover, most JavaScript engines will accept these special values in JSON without
+   * problem. So, at a practical level, it makes sense to accept these values as valid JSON even
+   * though JSON specification disallows them.
+   *
+   * <p>Gson always accepts these special values during deserialization. However, it outputs
+   * strictly compliant JSON. Hence, if it encounters a float value {@link Float#NaN},
+   * {@link Float#POSITIVE_INFINITY}, {@link Float#NEGATIVE_INFINITY}, or a double value
+   * {@link Double#NaN}, {@link Double#POSITIVE_INFINITY}, {@link Double#NEGATIVE_INFINITY}, it
+   * will throw an {@link IllegalArgumentException}. This method provides a way to override the
+   * default behavior when you know that the JSON receiver will be able to handle these special
+   * values.
+   *
+   * @return a reference to this {@code GsonBuilder} object to fulfill the "Builder" pattern
+   * @since 1.3
+   */
+  public GsonBuilder serializeSpecialFloatingPointValues() {
+    this.serializeSpecialFloatingPointValues = true;
+    return this;
+  }
+
+  /**
+   * Creates a {@link Gson} instance based on the current configuration. This method is free of
+   * side-effects to this {@code GsonBuilder} instance and hence can be called multiple times.
+   *
+   * @return an instance of Gson configured with the options currently set in this builder
+   */
+  public Gson create() {
+    List<TypeAdapterFactory> factories = new ArrayList<TypeAdapterFactory>();
+    factories.addAll(this.factories);
+    Collections.reverse(factories);
+    factories.addAll(this.hierarchyFactories);
+    addTypeAdaptersForDate(datePattern, dateStyle, timeStyle, factories);
+
+    return new Gson(excluder, fieldNamingPolicy, instanceCreators,
+        serializeNulls, complexMapKeySerialization,
+        generateNonExecutableJson, escapeHtmlChars, prettyPrinting,
+        serializeSpecialFloatingPointValues, longSerializationPolicy, factories);
+  }
+
+  private void addTypeAdaptersForDate(String datePattern, int dateStyle, int timeStyle,
+      List<TypeAdapterFactory> factories) {
+    DefaultDateTypeAdapter dateTypeAdapter;
+    if (datePattern != null && !"".equals(datePattern.trim())) {
+      dateTypeAdapter = new DefaultDateTypeAdapter(datePattern);
+    } else if (dateStyle != DateFormat.DEFAULT && timeStyle != DateFormat.DEFAULT) {
+      dateTypeAdapter = new DefaultDateTypeAdapter(dateStyle, timeStyle);
+    } else {
+      return;
+    }
+
+    factories.add(TreeTypeAdapter.newFactory(TypeToken.get(Date.class), dateTypeAdapter));
+    factories.add(TreeTypeAdapter.newFactory(TypeToken.get(Timestamp.class), dateTypeAdapter));
+    factories.add(TreeTypeAdapter.newFactory(TypeToken.get(java.sql.Date.class), dateTypeAdapter));
+  }
+}

src/com/google/gson/InstanceCreator.java

@@ -0,0 +1,92 @@
+/*
+ * Copyright (C) 2008 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson;
+
+import java.lang.reflect.Type;
+
+/**
+ * This interface is implemented to create instances of a class that does not define a no-args
+ * constructor. If you can modify the class, you should instead add a private, or public
+ * no-args constructor. However, that is not possible for library classes, such as JDK classes, or
+ * a third-party library that you do not have source-code of. In such cases, you should define an
+ * instance creator for the class. Implementations of this interface should be registered with
+ * {@link GsonBuilder#registerTypeAdapter(Type, Object)} method before Gson will be able to use
+ * them.
+ * <p>Let us look at an example where defining an InstanceCreator might be useful. The
+ * {@code Id} class defined below does not have a default no-args constructor.</p>
+ *
+ * <pre>
+ * public class Id&lt;T&gt; {
+ *   private final Class&lt;T&gt; clazz;
+ *   private final long value;
+ *   public Id(Class&lt;T&gt; clazz, long value) {
+ *     this.clazz = clazz;
+ *     this.value = value;
+ *   }
+ * }
+ * </pre>
+ *
+ * <p>If Gson encounters an object of type {@code Id} during deserialization, it will throw an
+ * exception. The easiest way to solve this problem will be to add a (public or private) no-args
+ * constructor as follows:</p>
+ *
+ * <pre>
+ * private Id() {
+ *   this(Object.class, 0L);
+ * }
+ * </pre>
+ *
+ * <p>However, let us assume that the developer does not have access to the source-code of the
+ * {@code Id} class, or does not want to define a no-args constructor for it. The developer
+ * can solve this problem by defining an {@code InstanceCreator} for {@code Id}:</p>
+ *
+ * <pre>
+ * class IdInstanceCreator implements InstanceCreator&lt;Id&gt; {
+ *   public Id createInstance(Type type) {
+ *     return new Id(Object.class, 0L);
+ *   }
+ * }
+ * </pre>
+ *
+ * <p>Note that it does not matter what the fields of the created instance contain since Gson will
+ * overwrite them with the deserialized values specified in Json. You should also ensure that a
+ * <i>new</i> object is returned, not a common object since its fields will be overwritten.
+ * The developer will need to register {@code IdInstanceCreator} with Gson as follows:</p>
+ *
+ * <pre>
+ * Gson gson = new GsonBuilder().registerTypeAdapter(Id.class, new IdInstanceCreator()).create();
+ * </pre>
+ *
+ * @param <T> the type of object that will be created by this implementation.
+ *
+ * @author Inderjeet Singh
+ * @author Joel Leitch
+ */
+public interface InstanceCreator<T> {
+
+  /**
+   * Gson invokes this call-back method during deserialization to create an instance of the
+   * specified type. The fields of the returned instance are overwritten with the data present
+   * in the Json. Since the prior contents of the object are destroyed and overwritten, do not
+   * return an instance that is useful elsewhere. In particular, do not return a common instance,
+   * always use {@code new} to create a new instance.
+   *
+   * @param type the parameterized T represented as a {@link Type}.
+   * @return a default object instance of type T.
+   */
+  public T createInstance(Type type);
+}

src/com/google/gson/JsonArray.java

@@ -0,0 +1,282 @@
+/*
+ * Copyright (C) 2008 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson;
+
+import java.math.BigDecimal;
+import java.math.BigInteger;
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+
+/**
+ * A class representing an array type in Json. An array is a list of {@link JsonElement}s each of
+ * which can be of a different type. This is an ordered list, meaning that the order in which
+ * elements are added is preserved.
+ *
+ * @author Inderjeet Singh
+ * @author Joel Leitch
+ */
+public final class JsonArray extends JsonElement implements Iterable<JsonElement> {
+  private final List<JsonElement> elements;
+
+  /**
+   * Creates an empty JsonArray.
+   */
+  public JsonArray() {
+    elements = new ArrayList<JsonElement>();
+  }
+
+  /**
+   * Adds the specified element to self.
+   *
+   * @param element the element that needs to be added to the array.
+   */
+  public void add(JsonElement element) {
+    if (element == null) {
+      element = JsonNull.INSTANCE;
+    }
+    elements.add(element);
+  }
+
+  /**
+   * Adds all the elements of the specified array to self.
+   *
+   * @param array the array whose elements need to be added to the array.
+   */
+  public void addAll(JsonArray array) {
+    elements.addAll(array.elements);
+  }
+
+  /**
+   * Returns the number of elements in the array.
+   *
+   * @return the number of elements in the array.
+   */
+  public int size() {
+    return elements.size();
+  }
+
+  /**
+   * Returns an iterator to navigate the elemetns of the array. Since the array is an ordered list,
+   * the iterator navigates the elements in the order they were inserted.
+   *
+   * @return an iterator to navigate the elements of the array.
+   */
+  public Iterator<JsonElement> iterator() {
+    return elements.iterator();
+  }
+
+  /**
+   * Returns the ith element of the array.
+   *
+   * @param i the index of the element that is being sought.
+   * @return the element present at the ith index.
+   * @throws IndexOutOfBoundsException if i is negative or greater than or equal to the
+   * {@link #size()} of the array.
+   */
+  public JsonElement get(int i) {
+    return elements.get(i);
+  }
+
+  /**
+   * convenience method to get this array as a {@link Number} if it contains a single element.
+   *
+   * @return get this element as a number if it is single element array.
+   * @throws ClassCastException if the element in the array is of not a {@link JsonPrimitive} and
+   * is not a valid Number.
+   * @throws IllegalStateException if the array has more than one element.
+   */
+  @Override
+  public Number getAsNumber() {
+    if (elements.size() == 1) {
+      return elements.get(0).getAsNumber();
+    }
+    throw new IllegalStateException();
+  }
+
+  /**
+   * convenience method to get this array as a {@link String} if it contains a single element.
+   *
+   * @return get this element as a String if it is single element array.
+   * @throws ClassCastException if the element in the array is of not a {@link JsonPrimitive} and
+   * is not a valid String.
+   * @throws IllegalStateException if the array has more than one element.
+   */
+  @Override
+  public String getAsString() {
+    if (elements.size() == 1) {
+      return elements.get(0).getAsString();
+    }
+    throw new IllegalStateException();
+  }
+
+  /**
+   * convenience method to get this array as a double if it contains a single element.
+   *
+   * @return get this element as a double if it is single element array.
+   * @throws ClassCastException if the element in the array is of not a {@link JsonPrimitive} and
+   * is not a valid double.
+   * @throws IllegalStateException if the array has more than one element.
+   */
+  @Override
+  public double getAsDouble() {
+    if (elements.size() == 1) {
+      return elements.get(0).getAsDouble();
+    }
+    throw new IllegalStateException();
+  }
+
+  /**
+   * convenience method to get this array as a {@link BigDecimal} if it contains a single element.
+   *
+   * @return get this element as a {@link BigDecimal} if it is single element array.
+   * @throws ClassCastException if the element in the array is of not a {@link JsonPrimitive}.
+   * @throws NumberFormatException if the element at index 0 is not a valid {@link BigDecimal}.
+   * @throws IllegalStateException if the array has more than one element.
+   * @since 1.2
+   */
+  @Override
+  public BigDecimal getAsBigDecimal() {
+    if (elements.size() == 1) {
+      return elements.get(0).getAsBigDecimal();
+    }
+    throw new IllegalStateException();
+  }
+
+  /**
+   * convenience method to get this array as a {@link BigInteger} if it contains a single element.
+   *
+   * @return get this element as a {@link BigInteger} if it is single element array.
+   * @throws ClassCastException if the element in the array is of not a {@link JsonPrimitive}.
+   * @throws NumberFormatException if the element at index 0 is not a valid {@link BigInteger}.
+   * @throws IllegalStateException if the array has more than one element.
+   * @since 1.2
+   */
+  @Override
+  public BigInteger getAsBigInteger() {
+    if (elements.size() == 1) {
+      return elements.get(0).getAsBigInteger();
+    }
+    throw new IllegalStateException();
+  }
+
+  /**
+   * convenience method to get this array as a float if it contains a single element.
+   *
+   * @return get this element as a float if it is single element array.
+   * @throws ClassCastException if the element in the array is of not a {@link JsonPrimitive} and
+   * is not a valid float.
+   * @throws IllegalStateException if the array has more than one element.
+   */
+  @Override
+  public float getAsFloat() {
+    if (elements.size() == 1) {
+      return elements.get(0).getAsFloat();
+    }
+    throw new IllegalStateException();
+  }
+
+  /**
+   * convenience method to get this array as a long if it contains a single element.
+   *
+   * @return get this element as a long if it is single element array.
+   * @throws ClassCastException if the element in the array is of not a {@link JsonPrimitive} and
+   * is not a valid long.
+   * @throws IllegalStateException if the array has more than one element.
+   */
+  @Override
+  public long getAsLong() {
+    if (elements.size() == 1) {
+      return elements.get(0).getAsLong();
+    }
+    throw new IllegalStateException();
+  }
+
+  /**
+   * convenience method to get this array as an integer if it contains a single element.
+   *
+   * @return get this element as an integer if it is single element array.
+   * @throws ClassCastException if the element in the array is of not a {@link JsonPrimitive} and
+   * is not a valid integer.
+   * @throws IllegalStateException if the array has more than one element.
+   */
+  @Override
+  public int getAsInt() {
+    if (elements.size() == 1) {
+      return elements.get(0).getAsInt();
+    }
+    throw new IllegalStateException();
+  }
+
+  @Override
+  public byte getAsByte() {
+    if (elements.size() == 1) {
+      return elements.get(0).getAsByte();
+    }
+    throw new IllegalStateException();
+  }
+
+  @Override
+  public char getAsCharacter() {
+    if (elements.size() == 1) {
+      return elements.get(0).getAsCharacter();
+    }
+    throw new IllegalStateException();
+  }
+
+  /**
+   * convenience method to get this array as a primitive short if it contains a single element.
+   *
+   * @return get this element as a primitive short if it is single element array.
+   * @throws ClassCastException if the element in the array is of not a {@link JsonPrimitive} and
+   * is not a valid short.
+   * @throws IllegalStateException if the array has more than one element.
+   */
+  @Override
+  public short getAsShort() {
+    if (elements.size() == 1) {
+      return elements.get(0).getAsShort();
+    }
+    throw new IllegalStateException();
+  }
+
+  /**
+   * convenience method to get this array as a boolean if it contains a single element.
+   *
+   * @return get this element as a boolean if it is single element array.
+   * @throws ClassCastException if the element in the array is of not a {@link JsonPrimitive} and
+   * is not a valid boolean.
+   * @throws IllegalStateException if the array has more than one element.
+   */
+  @Override
+  public boolean getAsBoolean() {
+    if (elements.size() == 1) {
+      return elements.get(0).getAsBoolean();
+    }
+    throw new IllegalStateException();
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    return (o == this) || (o instanceof JsonArray && ((JsonArray) o).elements.equals(elements));
+  }
+
+  @Override
+  public int hashCode() {
+    return elements.hashCode();
+  }
+}

src/com/google/gson/JsonDeserializationContext.java

@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2008 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson;
+
+import java.lang.reflect.Type;
+
+/**
+ * Context for deserialization that is passed to a custom deserializer during invocation of its
+ * {@link JsonDeserializer#deserialize(JsonElement, Type, JsonDeserializationContext)}
+ * method.
+ *
+ * @author Inderjeet Singh
+ * @author Joel Leitch
+ */
+public interface JsonDeserializationContext {
+
+  /**
+   * Invokes default deserialization on the specified object. It should never be invoked on
+   * the element received as a parameter of the
+   * {@link JsonDeserializer#deserialize(JsonElement, Type, JsonDeserializationContext)} method. Doing
+   * so will result in an infinite loop since Gson will in-turn call the custom deserializer again.
+   *
+   * @param json the parse tree.
+   * @param typeOfT type of the expected return value.
+   * @param <T> The type of the deserialized object.
+   * @return An object of type typeOfT.
+   * @throws JsonParseException if the parse tree does not contain expected data.
+   */
+  public <T> T deserialize(JsonElement json, Type typeOfT) throws JsonParseException;
+}

src/com/google/gson/JsonDeserializer.java

@@ -0,0 +1,91 @@
+/*
+ * Copyright (C) 2008 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson;
+
+import java.lang.reflect.Type;
+
+/**
+ * <p>Interface representing a custom deserializer for Json. You should write a custom
+ * deserializer, if you are not happy with the default deserialization done by Gson. You will
+ * also need to register this deserializer through
+ * {@link GsonBuilder#registerTypeAdapter(Type, Object)}.</p>
+ *
+ * <p>Let us look at example where defining a deserializer will be useful. The {@code Id} class
+ * defined below has two fields: {@code clazz} and {@code value}.</p>
+ *
+ * <pre>
+ * public class Id&lt;T&gt; {
+ *   private final Class&lt;T&gt; clazz;
+ *   private final long value;
+ *   public Id(Class&lt;T&gt; clazz, long value) {
+ *     this.clazz = clazz;
+ *     this.value = value;
+ *   }
+ *   public long getValue() {
+ *     return value;
+ *   }
+ * }
+ * </pre>
+ *
+ * <p>The default deserialization of {@code Id(com.foo.MyObject.class, 20L)} will require the
+ * Json string to be <code>{"clazz":com.foo.MyObject,"value":20}</code>. Suppose, you already know
+ * the type of the field that the {@code Id} will be deserialized into, and hence just want to
+ * deserialize it from a Json string {@code 20}. You can achieve that by writing a custom
+ * deserializer:</p>
+ *
+ * <pre>
+ * class IdDeserializer implements JsonDeserializer&lt;Id&gt;() {
+ *   public Id deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
+ *       throws JsonParseException {
+ *     return new Id((Class)typeOfT, id.getValue());
+ *   }
+ * </pre>
+ *
+ * <p>You will also need to register {@code IdDeserializer} with Gson as follows:</p>
+ *
+ * <pre>
+ * Gson gson = new GsonBuilder().registerTypeAdapter(Id.class, new IdDeserializer()).create();
+ * </pre>
+ *
+ * <p>New applications should prefer {@link TypeAdapter}, whose streaming API
+ * is more efficient than this interface's tree API.
+ *
+ * @author Inderjeet Singh
+ * @author Joel Leitch
+ *
+ * @param <T> type for which the deserializer is being registered. It is possible that a
+ * deserializer may be asked to deserialize a specific generic type of the T.
+ */
+public interface JsonDeserializer<T> {
+
+  /**
+   * Gson invokes this call-back method during deserialization when it encounters a field of the
+   * specified type.
+   * <p>In the implementation of this call-back method, you should consider invoking
+   * {@link JsonDeserializationContext#deserialize(JsonElement, Type)} method to create objects
+   * for any non-trivial field of the returned object. However, you should never invoke it on the
+   * the same type passing {@code json} since that will cause an infinite loop (Gson will call your
+   * call-back method again).
+   *
+   * @param json The Json data being deserialized
+   * @param typeOfT The type of the Object to deserialize to
+   * @return a deserialized object of the specified type typeOfT which is a subclass of {@code T}
+   * @throws JsonParseException if json is not in the expected format of {@code typeofT}
+   */
+  public T deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
+      throws JsonParseException;
+}

src/com/google/gson/JsonElement.java

@@ -0,0 +1,324 @@
+/*
+ * Copyright (C) 2008 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson;
+
+import com.google.gson.internal.Streams;
+import com.google.gson.stream.JsonWriter;
+import java.io.IOException;
+import java.io.StringWriter;
+import java.math.BigDecimal;
+import java.math.BigInteger;
+
+/**
+ * A class representing an element of Json. It could either be a {@link JsonObject}, a
+ * {@link JsonArray}, a {@link JsonPrimitive} or a {@link JsonNull}.
+ *
+ * @author Inderjeet Singh
+ * @author Joel Leitch
+ */
+public abstract class JsonElement {
+  /**
+   * provides check for verifying if this element is an array or not.
+   *
+   * @return true if this element is of type {@link JsonArray}, false otherwise.
+   */
+  public boolean isJsonArray() {
+    return this instanceof JsonArray;
+  }
+
+  /**
+   * provides check for verifying if this element is a Json object or not.
+   *
+   * @return true if this element is of type {@link JsonObject}, false otherwise.
+   */
+  public boolean isJsonObject() {
+    return this instanceof JsonObject;
+  }
+
+  /**
+   * provides check for verifying if this element is a primitive or not.
+   *
+   * @return true if this element is of type {@link JsonPrimitive}, false otherwise.
+   */
+  public boolean isJsonPrimitive() {
+    return this instanceof JsonPrimitive;
+  }
+
+  /**
+   * provides check for verifying if this element represents a null value or not.
+   *
+   * @return true if this element is of type {@link JsonNull}, false otherwise.
+   * @since 1.2
+   */
+  public boolean isJsonNull() {
+    return this instanceof JsonNull;
+  }
+
+  /**
+   * convenience method to get this element as a {@link JsonObject}. If the element is of some
+   * other type, a {@link ClassCastException} will result. Hence it is best to use this method
+   * after ensuring that this element is of the desired type by calling {@link #isJsonObject()}
+   * first.
+   *
+   * @return get this element as a {@link JsonObject}.
+   * @throws IllegalStateException if the element is of another type.
+   */
+  public JsonObject getAsJsonObject() {
+    if (isJsonObject()) {
+      return (JsonObject) this;
+    }
+    throw new IllegalStateException("Not a JSON Object: " + this);
+  }
+
+  /**
+   * convenience method to get this element as a {@link JsonArray}. If the element is of some
+   * other type, a {@link ClassCastException} will result. Hence it is best to use this method
+   * after ensuring that this element is of the desired type by calling {@link #isJsonArray()}
+   * first.
+   *
+   * @return get this element as a {@link JsonArray}.
+   * @throws IllegalStateException if the element is of another type.
+   */
+  public JsonArray getAsJsonArray() {
+    if (isJsonArray()) {
+      return (JsonArray) this;
+    }
+    throw new IllegalStateException("This is not a JSON Array.");
+  }
+
+  /**
+   * convenience method to get this element as a {@link JsonPrimitive}. If the element is of some
+   * other type, a {@link ClassCastException} will result. Hence it is best to use this method
+   * after ensuring that this element is of the desired type by calling {@link #isJsonPrimitive()}
+   * first.
+   *
+   * @return get this element as a {@link JsonPrimitive}.
+   * @throws IllegalStateException if the element is of another type.
+   */
+  public JsonPrimitive getAsJsonPrimitive() {
+    if (isJsonPrimitive()) {
+      return (JsonPrimitive) this;
+    }
+    throw new IllegalStateException("This is not a JSON Primitive.");
+  }
+
+  /**
+   * convenience method to get this element as a {@link JsonNull}. If the element is of some
+   * other type, a {@link ClassCastException} will result. Hence it is best to use this method
+   * after ensuring that this element is of the desired type by calling {@link #isJsonNull()}
+   * first.
+   *
+   * @return get this element as a {@link JsonNull}.
+   * @throws IllegalStateException if the element is of another type.
+   * @since 1.2
+   */
+  public JsonNull getAsJsonNull() {
+    if (isJsonNull()) {
+      return (JsonNull) this;
+    }
+    throw new IllegalStateException("This is not a JSON Null.");
+  }
+
+  /**
+   * convenience method to get this element as a boolean value.
+   *
+   * @return get this element as a primitive boolean value.
+   * @throws ClassCastException if the element is of not a {@link JsonPrimitive} and is not a valid
+   * boolean value.
+   * @throws IllegalStateException if the element is of the type {@link JsonArray} but contains
+   * more than a single element.
+   */
+  public boolean getAsBoolean() {
+    throw new UnsupportedOperationException(getClass().getSimpleName());
+  }
+
+  /**
+   * convenience method to get this element as a {@link Boolean} value.
+   *
+   * @return get this element as a {@link Boolean} value.
+   * @throws ClassCastException if the element is of not a {@link JsonPrimitive} and is not a valid
+   * boolean value.
+   * @throws IllegalStateException if the element is of the type {@link JsonArray} but contains
+   * more than a single element.
+   */
+  Boolean getAsBooleanWrapper() {
+    throw new UnsupportedOperationException(getClass().getSimpleName());
+  }
+
+  /**
+   * convenience method to get this element as a {@link Number}.
+   *
+   * @return get this element as a {@link Number}.
+   * @throws ClassCastException if the element is of not a {@link JsonPrimitive} and is not a valid
+   * number.
+   * @throws IllegalStateException if the element is of the type {@link JsonArray} but contains
+   * more than a single element.
+   */
+  public Number getAsNumber() {
+    throw new UnsupportedOperationException(getClass().getSimpleName());
+  }
+
+  /**
+   * convenience method to get this element as a string value.
+   *
+   * @return get this element as a string value.
+   * @throws ClassCastException if the element is of not a {@link JsonPrimitive} and is not a valid
+   * string value.
+   * @throws IllegalStateException if the element is of the type {@link JsonArray} but contains
+   * more than a single element.
+   */
+  public String getAsString() {
+    throw new UnsupportedOperationException(getClass().getSimpleName());
+  }
+
+  /**
+   * convenience method to get this element as a primitive double value.
+   *
+   * @return get this element as a primitive double value.
+   * @throws ClassCastException if the element is of not a {@link JsonPrimitive} and is not a valid
+   * double value.
+   * @throws IllegalStateException if the element is of the type {@link JsonArray} but contains
+   * more than a single element.
+   */
+  public double getAsDouble() {
+    throw new UnsupportedOperationException(getClass().getSimpleName());
+  }
+
+  /**
+   * convenience method to get this element as a primitive float value.
+   *
+   * @return get this element as a primitive float value.
+   * @throws ClassCastException if the element is of not a {@link JsonPrimitive} and is not a valid
+   * float value.
+   * @throws IllegalStateException if the element is of the type {@link JsonArray} but contains
+   * more than a single element.
+   */
+  public float getAsFloat() {
+    throw new UnsupportedOperationException(getClass().getSimpleName());
+  }
+
+  /**
+   * convenience method to get this element as a primitive long value.
+   *
+   * @return get this element as a primitive long value.
+   * @throws ClassCastException if the element is of not a {@link JsonPrimitive} and is not a valid
+   * long value.
+   * @throws IllegalStateException if the element is of the type {@link JsonArray} but contains
+   * more than a single element.
+   */
+  public long getAsLong() {
+    throw new UnsupportedOperationException(getClass().getSimpleName());
+  }
+
+  /**
+   * convenience method to get this element as a primitive integer value.
+   *
+   * @return get this element as a primitive integer value.
+   * @throws ClassCastException if the element is of not a {@link JsonPrimitive} and is not a valid
+   * integer value.
+   * @throws IllegalStateException if the element is of the type {@link JsonArray} but contains
+   * more than a single element.
+   */
+  public int getAsInt() {
+    throw new UnsupportedOperationException(getClass().getSimpleName());
+  }
+
+  /**
+   * convenience method to get this element as a primitive byte value.
+   *
+   * @return get this element as a primitive byte value.
+   * @throws ClassCastException if the element is of not a {@link JsonPrimitive} and is not a valid
+   * byte value.
+   * @throws IllegalStateException if the element is of the type {@link JsonArray} but contains
+   * more than a single element.
+   * @since 1.3
+   */
+  public byte getAsByte() {
+    throw new UnsupportedOperationException(getClass().getSimpleName());
+  }
+
+  /**
+   * convenience method to get this element as a primitive character value.
+   *
+   * @return get this element as a primitive char value.
+   * @throws ClassCastException if the element is of not a {@link JsonPrimitive} and is not a valid
+   * char value.
+   * @throws IllegalStateException if the element is of the type {@link JsonArray} but contains
+   * more than a single element.
+   * @since 1.3
+   */
+  public char getAsCharacter() {
+    throw new UnsupportedOperationException(getClass().getSimpleName());
+  }
+
+  /**
+   * convenience method to get this element as a {@link BigDecimal}.
+   *
+   * @return get this element as a {@link BigDecimal}.
+   * @throws ClassCastException if the element is of not a {@link JsonPrimitive}.
+   * * @throws NumberFormatException if the element is not a valid {@link BigDecimal}.
+   * @throws IllegalStateException if the element is of the type {@link JsonArray} but contains
+   * more than a single element.
+   * @since 1.2
+   */
+  public BigDecimal getAsBigDecimal() {
+    throw new UnsupportedOperationException(getClass().getSimpleName());
+  }
+
+  /**
+   * convenience method to get this element as a {@link BigInteger}.
+   *
+   * @return get this element as a {@link BigInteger}.
+   * @throws ClassCastException if the element is of not a {@link JsonPrimitive}.
+   * @throws NumberFormatException if the element is not a valid {@link BigInteger}.
+   * @throws IllegalStateException if the element is of the type {@link JsonArray} but contains
+   * more than a single element.
+   * @since 1.2
+   */
+  public BigInteger getAsBigInteger() {
+    throw new UnsupportedOperationException(getClass().getSimpleName());
+  }
+
+  /**
+   * convenience method to get this element as a primitive short value.
+   *
+   * @return get this element as a primitive short value.
+   * @throws ClassCastException if the element is of not a {@link JsonPrimitive} and is not a valid
+   * short value.
+   * @throws IllegalStateException if the element is of the type {@link JsonArray} but contains
+   * more than a single element.
+   */
+  public short getAsShort() {
+    throw new UnsupportedOperationException(getClass().getSimpleName());
+  }
+
+  /**
+   * Returns a String representation of this element.
+   */
+  @Override
+  public String toString() {
+    try {
+      StringWriter stringWriter = new StringWriter();
+      JsonWriter jsonWriter = new JsonWriter(stringWriter);
+      jsonWriter.setLenient(true);
+      Streams.write(this, jsonWriter);
+      return stringWriter.toString();
+    } catch (IOException e) {
+      throw new AssertionError(e);
+    }
+  }
+}

src/com/google/gson/JsonIOException.java

@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2008 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.google.gson;
+
+/**
+ * This exception is raised when Gson was unable to read an input stream
+ * or write to one.
+ * 
+ * @author Inderjeet Singh
+ * @author Joel Leitch
+ */
+public final class JsonIOException extends JsonParseException {
+  private static final long serialVersionUID = 1L;
+
+  public JsonIOException(String msg) {
+    super(msg);
+  }
+
+  public JsonIOException(String msg, Throwable cause) {
+    super(msg, cause);
+  }
+
+  /**
+   * Creates exception with the specified cause. Consider using
+   * {@link #JsonIOException(String, Throwable)} instead if you can describe what happened.
+   *
+   * @param cause root exception that caused this exception to be thrown.
+   */
+  public JsonIOException(Throwable cause) {
+    super(cause);
+  }
+}

src/com/google/gson/JsonNull.java

@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2008 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson;
+
+/**
+ * A class representing a Json {@code null} value.
+ *
+ * @author Inderjeet Singh
+ * @author Joel Leitch
+ * @since 1.2
+ */
+public final class JsonNull extends JsonElement {
+  /**
+   * singleton for JsonNull
+   *
+   * @since 1.8
+   */
+  public static final JsonNull INSTANCE = new JsonNull();
+
+  /**
+   * Creates a new JsonNull object.
+   * Deprecated since Gson version 1.8. Use {@link #INSTANCE} instead
+   */
+  @Deprecated
+  public JsonNull() {
+    // Do nothing
+  }
+
+  /**
+   * All instances of JsonNull have the same hash code since they are indistinguishable
+   */
+  @Override
+  public int hashCode() {
+    return JsonNull.class.hashCode();
+  }
+
+  /**
+   * All instances of JsonNull are the same
+   */
+  @Override
+  public boolean equals(Object other) {
+    return this == other || other instanceof JsonNull;
+  }
+}

src/com/google/gson/JsonObject.java

@@ -0,0 +1,199 @@
+/*
+ * Copyright (C) 2008 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson;
+
+import com.google.gson.internal.$Gson$Preconditions;
+import java.util.LinkedHashMap;
+import java.util.Map;
+import java.util.Set;
+
+/**
+ * A class representing an object type in Json. An object consists of name-value pairs where names
+ * are strings, and values are any other type of {@link JsonElement}. This allows for a creating a
+ * tree of JsonElements. The member elements of this object are maintained in order they were added.
+ *
+ * @author Inderjeet Singh
+ * @author Joel Leitch
+ */
+public final class JsonObject extends JsonElement {
+  // We are using a linked hash map because it is important to preserve
+  // the order in which elements are inserted. This is needed to ensure
+  // that the fields of an object are inserted in the order they were
+  // defined in the class.
+  private final Map<String, JsonElement> members = new LinkedHashMap<String, JsonElement>();
+
+  /**
+   * Creates an empty JsonObject.
+   */
+  public JsonObject() {
+  }
+
+  /**
+   * Adds a member, which is a name-value pair, to self. The name must be a String, but the value
+   * can be an arbitrary JsonElement, thereby allowing you to build a full tree of JsonElements
+   * rooted at this node.
+   *
+   * @param property name of the member.
+   * @param value the member object.
+   */
+  public void add(String property, JsonElement value) {
+    if (value == null) {
+      value = JsonNull.INSTANCE;
+    }
+    members.put($Gson$Preconditions.checkNotNull(property), value);
+  }
+
+  /**
+   * Removes the {@code property} from this {@link JsonObject}.
+   *
+   * @param property name of the member that should be removed.
+   * @return the {@link JsonElement} object that is being removed.
+   * @since 1.3
+   */
+  public JsonElement remove(String property) {
+    return members.remove(property);
+  }
+
+  /**
+   * Convenience method to add a primitive member. The specified value is converted to a
+   * JsonPrimitive of String.
+   *
+   * @param property name of the member.
+   * @param value the string value associated with the member.
+   */
+  public void addProperty(String property, String value) {
+    add(property, createJsonElement(value));
+  }
+
+  /**
+   * Convenience method to add a primitive member. The specified value is converted to a
+   * JsonPrimitive of Number.
+   *
+   * @param property name of the member.
+   * @param value the number value associated with the member.
+   */
+  public void addProperty(String property, Number value) {
+    add(property, createJsonElement(value));
+  }
+
+  /**
+   * Convenience method to add a boolean member. The specified value is converted to a
+   * JsonPrimitive of Boolean.
+   *
+   * @param property name of the member.
+   * @param value the number value associated with the member.
+   */
+  public void addProperty(String property, Boolean value) {
+    add(property, createJsonElement(value));
+  }
+
+  /**
+   * Convenience method to add a char member. The specified value is converted to a
+   * JsonPrimitive of Character.
+   *
+   * @param property name of the member.
+   * @param value the number value associated with the member.
+   */
+  public void addProperty(String property, Character value) {
+    add(property, createJsonElement(value));
+  }
+
+  /**
+   * Creates the proper {@link JsonElement} object from the given {@code value} object.
+   *
+   * @param value the object to generate the {@link JsonElement} for
+   * @return a {@link JsonPrimitive} if the {@code value} is not null, otherwise a {@link JsonNull}
+   */
+  private JsonElement createJsonElement(Object value) {
+    return value == null ? JsonNull.INSTANCE : new JsonPrimitive(value);
+  }
+
+  /**
+   * Returns a set of members of this object. The set is ordered, and the order is in which the
+   * elements were added.
+   *
+   * @return a set of members of this object.
+   */
+  public Set<Map.Entry<String, JsonElement>> entrySet() {
+    return members.entrySet();
+  }
+
+  /**
+   * Convenience method to check if a member with the specified name is present in this object.
+   *
+   * @param memberName name of the member that is being checked for presence.
+   * @return true if there is a member with the specified name, false otherwise.
+   */
+  public boolean has(String memberName) {
+    return members.containsKey(memberName);
+  }
+
+  /**
+   * Returns the member with the specified name.
+   *
+   * @param memberName name of the member that is being requested.
+   * @return the member matching the name. Null if no such member exists.
+   */
+  public JsonElement get(String memberName) {
+    if (members.containsKey(memberName)) {
+      JsonElement member = members.get(memberName);
+      return member == null ? JsonNull.INSTANCE : member;
+    }
+    return null;
+  }
+
+  /**
+   * Convenience method to get the specified member as a JsonPrimitive element.
+   *
+   * @param memberName name of the member being requested.
+   * @return the JsonPrimitive corresponding to the specified member.
+   */
+  public JsonPrimitive getAsJsonPrimitive(String memberName) {
+    return (JsonPrimitive) members.get(memberName);
+  }
+
+  /**
+   * Convenience method to get the specified member as a JsonArray.
+   *
+   * @param memberName name of the member being requested.
+   * @return the JsonArray corresponding to the specified member.
+   */
+  public JsonArray getAsJsonArray(String memberName) {
+    return (JsonArray) members.get(memberName);
+  }
+
+  /**
+   * Convenience method to get the specified member as a JsonObject.
+   *
+   * @param memberName name of the member being requested.
+   * @return the JsonObject corresponding to the specified member.
+   */
+  public JsonObject getAsJsonObject(String memberName) {
+    return (JsonObject) members.get(memberName);
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    return (o == this) || (o instanceof JsonObject
+        && ((JsonObject) o).members.equals(members));
+  }
+
+  @Override
+  public int hashCode() {
+    return members.hashCode();
+  }
+}

src/com/google/gson/JsonParseException.java

@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2008 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson;
+
+/**
+ * This exception is raised if there is a serious issue that occurs during parsing of a Json
+ * string.  One of the main usages for this class is for the Gson infrastructure.  If the incoming
+ * Json is bad/malicious, an instance of this exception is raised.
+ *
+ * <p>This exception is a {@link RuntimeException} because it is exposed to the client.  Using a
+ * {@link RuntimeException} avoids bad coding practices on the client side where they catch the
+ * exception and do nothing.  It is often the case that you want to blow up if there is a parsing
+ * error (i.e. often clients do not know how to recover from a {@link JsonParseException}.</p>
+ *
+ * @author Inderjeet Singh
+ * @author Joel Leitch
+ */
+public class JsonParseException extends RuntimeException {
+  static final long serialVersionUID = -4086729973971783390L;
+
+  /**
+   * Creates exception with the specified message. If you are wrapping another exception, consider
+   * using {@link #JsonParseException(String, Throwable)} instead.
+   *
+   * @param msg error message describing a possible cause of this exception.
+   */
+  public JsonParseException(String msg) {
+    super(msg);
+  }
+
+  /**
+   * Creates exception with the specified message and cause.
+   *
+   * @param msg error message describing what happened.
+   * @param cause root exception that caused this exception to be thrown.
+   */
+  public JsonParseException(String msg, Throwable cause) {
+    super(msg, cause);
+  }
+
+  /**
+   * Creates exception with the specified cause. Consider using
+   * {@link #JsonParseException(String, Throwable)} instead if you can describe what happened.
+   *
+   * @param cause root exception that caused this exception to be thrown.
+   */
+  public JsonParseException(Throwable cause) {
+    super(cause);
+  }
+}

src/com/google/gson/JsonParser.java

@@ -0,0 +1,98 @@
+/*
+ * Copyright (C) 2009 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.google.gson;
+
+import com.google.gson.internal.Streams;
+import com.google.gson.stream.JsonReader;
+import com.google.gson.stream.JsonToken;
+import com.google.gson.stream.MalformedJsonException;
+import java.io.EOFException;
+import java.io.IOException;
+import java.io.Reader;
+import java.io.StringReader;
+
+/**
+ * A parser to parse Json into a parse tree of {@link JsonElement}s
+ *
+ * @author Inderjeet Singh
+ * @author Joel Leitch
+ * @since 1.3
+ */
+public final class JsonParser {
+
+  /**
+   * Parses the specified JSON string into a parse tree
+   *
+   * @param json JSON text
+   * @return a parse tree of {@link JsonElement}s corresponding to the specified JSON
+   * @throws JsonParseException if the specified text is not valid JSON
+   * @since 1.3
+   */
+  public JsonElement parse(String json) throws JsonSyntaxException {
+    return parse(new StringReader(json));
+  }
+
+  /**
+   * Parses the specified JSON string into a parse tree
+   *
+   * @param json JSON text
+   * @return a parse tree of {@link JsonElement}s corresponding to the specified JSON
+   * @throws JsonParseException if the specified text is not valid JSON
+   * @since 1.3
+   */
+  public JsonElement parse(Reader json) throws JsonIOException, JsonSyntaxException {
+    try {
+      JsonReader jsonReader = new JsonReader(json);
+      JsonElement element = parse(jsonReader);
+      if (!element.isJsonNull() && jsonReader.peek() != JsonToken.END_DOCUMENT) {
+        throw new JsonSyntaxException("Did not consume the entire document.");
+      }
+      return element;
+    } catch (MalformedJsonException e) {
+      throw new JsonSyntaxException(e);
+    } catch (IOException e) {
+      throw new JsonIOException(e);
+    } catch (NumberFormatException e) {
+      throw new JsonSyntaxException(e);
+    }
+  }
+
+  /**
+   * Returns the next value from the JSON stream as a parse tree.
+   *
+   * @throws JsonParseException if there is an IOException or if the specified
+   *     text is not valid JSON
+   * @since 1.6
+   */
+  public JsonElement parse(JsonReader json) throws JsonIOException, JsonSyntaxException {
+    boolean lenient = json.isLenient();
+    json.setLenient(true);
+    try {
+      return Streams.parse(json);
+    } catch (StackOverflowError e) {
+      throw new JsonParseException("Failed parsing JSON source: " + json + " to Json", e);
+    } catch (OutOfMemoryError e) {
+      throw new JsonParseException("Failed parsing JSON source: " + json + " to Json", e);
+    } catch (JsonParseException e) {
+      if (e.getCause() instanceof EOFException) {
+        return JsonNull.INSTANCE;
+      }
+      throw e;
+    } finally {
+      json.setLenient(lenient);
+    }
+  }
+}

src/com/google/gson/JsonPrimitive.java

@@ -0,0 +1,336 @@
+/*
+ * Copyright (C) 2008 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson;
+
+import com.google.gson.internal.$Gson$Preconditions;
+import com.google.gson.internal.LazilyParsedNumber;
+
+import java.math.BigDecimal;
+import java.math.BigInteger;
+
+/**
+ * A class representing a Json primitive value. A primitive value
+ * is either a String, a Java primitive, or a Java primitive
+ * wrapper type.
+ *
+ * @author Inderjeet Singh
+ * @author Joel Leitch
+ */
+public final class JsonPrimitive extends JsonElement {
+
+  private static final Class<?>[] PRIMITIVE_TYPES = { int.class, long.class, short.class,
+      float.class, double.class, byte.class, boolean.class, char.class, Integer.class, Long.class,
+      Short.class, Float.class, Double.class, Byte.class, Boolean.class, Character.class };
+
+  private Object value;
+
+  /**
+   * Create a primitive containing a boolean value.
+   *
+   * @param bool the value to create the primitive with.
+   */
+  public JsonPrimitive(Boolean bool) {
+    setValue(bool);
+  }
+
+  /**
+   * Create a primitive containing a {@link Number}.
+   *
+   * @param number the value to create the primitive with.
+   */
+  public JsonPrimitive(Number number) {
+    setValue(number);
+  }
+
+  /**
+   * Create a primitive containing a String value.
+   *
+   * @param string the value to create the primitive with.
+   */
+  public JsonPrimitive(String string) {
+    setValue(string);
+  }
+
+  /**
+   * Create a primitive containing a character. The character is turned into a one character String
+   * since Json only supports String.
+   *
+   * @param c the value to create the primitive with.
+   */
+  public JsonPrimitive(Character c) {
+    setValue(c);
+  }
+
+  /**
+   * Create a primitive using the specified Object. It must be an instance of {@link Number}, a
+   * Java primitive type, or a String.
+   *
+   * @param primitive the value to create the primitive with.
+   */
+  JsonPrimitive(Object primitive) {
+    setValue(primitive);
+  }
+
+  void setValue(Object primitive) {
+    if (primitive instanceof Character) {
+      // convert characters to strings since in JSON, characters are represented as a single
+      // character string
+      char c = ((Character) primitive).charValue();
+      this.value = String.valueOf(c);
+    } else {
+      $Gson$Preconditions.checkArgument(primitive instanceof Number
+              || isPrimitiveOrString(primitive));
+      this.value = primitive;
+    }
+  }
+
+  /**
+   * Check whether this primitive contains a boolean value.
+   *
+   * @return true if this primitive contains a boolean value, false otherwise.
+   */
+  public boolean isBoolean() {
+    return value instanceof Boolean;
+  }
+
+  /**
+   * convenience method to get this element as a {@link Boolean}.
+   *
+   * @return get this element as a {@link Boolean}.
+   */
+  @Override
+  Boolean getAsBooleanWrapper() {
+    return (Boolean) value;
+  }
+
+  /**
+   * convenience method to get this element as a boolean value.
+   *
+   * @return get this element as a primitive boolean value.
+   */
+  @Override
+  public boolean getAsBoolean() {
+    if (isBoolean()) {
+      return getAsBooleanWrapper().booleanValue();
+    } else {
+      // Check to see if the value as a String is "true" in any case.
+      return Boolean.parseBoolean(getAsString());
+    }
+  }
+
+  /**
+   * Check whether this primitive contains a Number.
+   *
+   * @return true if this primitive contains a Number, false otherwise.
+   */
+  public boolean isNumber() {
+    return value instanceof Number;
+  }
+
+  /**
+   * convenience method to get this element as a Number.
+   *
+   * @return get this element as a Number.
+   * @throws NumberFormatException if the value contained is not a valid Number.
+   */
+  @Override
+  public Number getAsNumber() {
+    return value instanceof String ? new LazilyParsedNumber((String) value) : (Number) value;
+  }
+
+  /**
+   * Check whether this primitive contains a String value.
+   *
+   * @return true if this primitive contains a String value, false otherwise.
+   */
+  public boolean isString() {
+    return value instanceof String;
+  }
+
+  /**
+   * convenience method to get this element as a String.
+   *
+   * @return get this element as a String.
+   */
+  @Override
+  public String getAsString() {
+    if (isNumber()) {
+      return getAsNumber().toString();
+    } else if (isBoolean()) {
+      return getAsBooleanWrapper().toString();
+    } else {
+      return (String) value;
+    }
+  }
+
+  /**
+   * convenience method to get this element as a primitive double.
+   *
+   * @return get this element as a primitive double.
+   * @throws NumberFormatException if the value contained is not a valid double.
+   */
+  @Override
+  public double getAsDouble() {
+    return isNumber() ? getAsNumber().doubleValue() : Double.parseDouble(getAsString());
+  }
+
+  /**
+   * convenience method to get this element as a {@link BigDecimal}.
+   *
+   * @return get this element as a {@link BigDecimal}.
+   * @throws NumberFormatException if the value contained is not a valid {@link BigDecimal}.
+   */
+  @Override
+  public BigDecimal getAsBigDecimal() {
+    return value instanceof BigDecimal ? (BigDecimal) value : new BigDecimal(value.toString());
+  }
+
+  /**
+   * convenience method to get this element as a {@link BigInteger}.
+   *
+   * @return get this element as a {@link BigInteger}.
+   * @throws NumberFormatException if the value contained is not a valid {@link BigInteger}.
+   */
+  @Override
+  public BigInteger getAsBigInteger() {
+    return value instanceof BigInteger ?
+        (BigInteger) value : new BigInteger(value.toString());
+  }
+
+  /**
+   * convenience method to get this element as a float.
+   *
+   * @return get this element as a float.
+   * @throws NumberFormatException if the value contained is not a valid float.
+   */
+  @Override
+  public float getAsFloat() {
+    return isNumber() ? getAsNumber().floatValue() : Float.parseFloat(getAsString());
+  }
+
+  /**
+   * convenience method to get this element as a primitive long.
+   *
+   * @return get this element as a primitive long.
+   * @throws NumberFormatException if the value contained is not a valid long.
+   */
+  @Override
+  public long getAsLong() {
+    return isNumber() ? getAsNumber().longValue() : Long.parseLong(getAsString());
+  }
+
+  /**
+   * convenience method to get this element as a primitive short.
+   *
+   * @return get this element as a primitive short.
+   * @throws NumberFormatException if the value contained is not a valid short value.
+   */
+  @Override
+  public short getAsShort() {
+    return isNumber() ? getAsNumber().shortValue() : Short.parseShort(getAsString());
+  }
+
+ /**
+  * convenience method to get this element as a primitive integer.
+  *
+  * @return get this element as a primitive integer.
+  * @throws NumberFormatException if the value contained is not a valid integer.
+  */
+  @Override
+  public int getAsInt() {
+    return isNumber() ? getAsNumber().intValue() : Integer.parseInt(getAsString());
+  }
+
+  @Override
+  public byte getAsByte() {
+    return isNumber() ? getAsNumber().byteValue() : Byte.parseByte(getAsString());
+  }
+
+  @Override
+  public char getAsCharacter() {
+    return getAsString().charAt(0);
+  }
+
+  private static boolean isPrimitiveOrString(Object target) {
+    if (target instanceof String) {
+      return true;
+    }
+
+    Class<?> classOfPrimitive = target.getClass();
+    for (Class<?> standardPrimitive : PRIMITIVE_TYPES) {
+      if (standardPrimitive.isAssignableFrom(classOfPrimitive)) {
+        return true;
+      }
+    }
+    return false;
+  }
+
+  @Override
+  public int hashCode() {
+    if (value == null) {
+      return 31;
+    }
+    // Using recommended hashing algorithm from Effective Java for longs and doubles
+    if (isIntegral(this)) {
+      long value = getAsNumber().longValue();
+      return (int) (value ^ (value >>> 32));
+    }
+    if (value instanceof Number) {
+      long value = Double.doubleToLongBits(getAsNumber().doubleValue());
+      return (int) (value ^ (value >>> 32));
+    }
+    return value.hashCode();
+  }
+
+  @Override
+  public boolean equals(Object obj) {
+    if (this == obj) {
+      return true;
+    }
+    if (obj == null || getClass() != obj.getClass()) {
+      return false;
+    }
+    JsonPrimitive other = (JsonPrimitive)obj;
+    if (value == null) {
+      return other.value == null;
+    }
+    if (isIntegral(this) && isIntegral(other)) {
+      return getAsNumber().longValue() == other.getAsNumber().longValue();
+    }
+    if (value instanceof Number && other.value instanceof Number) {
+      double a = getAsNumber().doubleValue();
+      // Java standard types other than double return true for two NaN. So, need
+      // special handling for double.
+      double b = other.getAsNumber().doubleValue();
+      return a == b || (Double.isNaN(a) && Double.isNaN(b));
+    }
+    return value.equals(other.value);
+  }
+
+  /**
+   * Returns true if the specified number is an integral type
+   * (Long, Integer, Short, Byte, BigInteger)
+   */
+  private static boolean isIntegral(JsonPrimitive primitive) {
+    if (primitive.value instanceof Number) {
+      Number number = (Number) primitive.value;
+      return number instanceof BigInteger || number instanceof Long || number instanceof Integer
+          || number instanceof Short || number instanceof Byte;
+    }
+    return false;
+  }
+}

src/com/google/gson/JsonSerializationContext.java

@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2008 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson;
+
+import java.lang.reflect.Type;
+
+/**
+ * Context for serialization that is passed to a custom serializer during invocation of its
+ * {@link JsonSerializer#serialize(Object, Type, JsonSerializationContext)} method.
+ *
+ * @author Inderjeet Singh
+ * @author Joel Leitch
+ */
+public interface JsonSerializationContext {
+
+  /**
+   * Invokes default serialization on the specified object.
+   *
+   * @param src the object that needs to be serialized.
+   * @return a tree of {@link JsonElement}s corresponding to the serialized form of {@code src}.
+   */
+  public JsonElement serialize(Object src);
+
+  /**
+   * Invokes default serialization on the specified object passing the specific type information.
+   * It should never be invoked on the element received as a parameter of the
+   * {@link JsonSerializer#serialize(Object, Type, JsonSerializationContext)} method. Doing
+   * so will result in an infinite loop since Gson will in-turn call the custom serializer again.
+   *
+   * @param src the object that needs to be serialized.
+   * @param typeOfSrc the actual genericized type of src object.
+   * @return a tree of {@link JsonElement}s corresponding to the serialized form of {@code src}.
+   */
+  public JsonElement serialize(Object src, Type typeOfSrc);
+}

src/com/google/gson/JsonSerializer.java

@@ -0,0 +1,89 @@
+/*
+ * Copyright (C) 2008 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson;
+
+import java.lang.reflect.Type;
+
+/**
+ * Interface representing a custom serializer for Json. You should write a custom serializer, if
+ * you are not happy with the default serialization done by Gson. You will also need to register
+ * this serializer through {@link com.google.gson.GsonBuilder#registerTypeAdapter(Type, Object)}.
+ *
+ * <p>Let us look at example where defining a serializer will be useful. The {@code Id} class
+ * defined below has two fields: {@code clazz} and {@code value}.</p>
+ *
+ * <p><pre>
+ * public class Id&lt;T&gt; {
+ *   private final Class&lt;T&gt; clazz;
+ *   private final long value;
+ *
+ *   public Id(Class&lt;T&gt; clazz, long value) {
+ *     this.clazz = clazz;
+ *     this.value = value;
+ *   }
+ *
+ *   public long getValue() {
+ *     return value;
+ *   }
+ * }
+ * </pre></p>
+ *
+ * <p>The default serialization of {@code Id(com.foo.MyObject.class, 20L)} will be
+ * <code>{"clazz":com.foo.MyObject,"value":20}</code>. Suppose, you just want the output to be
+ * the value instead, which is {@code 20} in this case. You can achieve that by writing a custom
+ * serializer:</p>
+ *
+ * <p><pre>
+ * class IdSerializer implements JsonSerializer&lt;Id&gt;() {
+ *   public JsonElement serialize(Id id, Type typeOfId, JsonSerializationContext context) {
+ *     return new JsonPrimitive(id.getValue());
+ *   }
+ * }
+ * </pre></p>
+ *
+ * <p>You will also need to register {@code IdSerializer} with Gson as follows:</p>
+ * <pre>
+ * Gson gson = new GsonBuilder().registerTypeAdapter(Id.class, new IdSerializer()).create();
+ * </pre>
+ *
+ * <p>New applications should prefer {@link TypeAdapter}, whose streaming API
+ * is more efficient than this interface's tree API.
+ *
+ * @author Inderjeet Singh
+ * @author Joel Leitch
+ *
+ * @param <T> type for which the serializer is being registered. It is possible that a serializer
+ *        may be asked to serialize a specific generic type of the T.
+ */
+public interface JsonSerializer<T> {
+
+  /**
+   * Gson invokes this call-back method during serialization when it encounters a field of the
+   * specified type.
+   *
+   * <p>In the implementation of this call-back method, you should consider invoking
+   * {@link JsonSerializationContext#serialize(Object, Type)} method to create JsonElements for any
+   * non-trivial field of the {@code src} object. However, you should never invoke it on the
+   * {@code src} object itself since that will cause an infinite loop (Gson will call your
+   * call-back method again).</p>
+   *
+   * @param src the object that needs to be converted to Json.
+   * @param typeOfSrc the actual type (fully genericized version) of the source object.
+   * @return a JsonElement corresponding to the specified object.
+   */
+  public JsonElement serialize(T src, Type typeOfSrc, JsonSerializationContext context);
+}

src/com/google/gson/JsonStreamParser.java

@@ -0,0 +1,122 @@
+/*
+ * Copyright (C) 2009 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.google.gson;
+
+import java.io.EOFException;
+import java.io.IOException;
+import java.io.Reader;
+import java.io.StringReader;
+import java.util.Iterator;
+import java.util.NoSuchElementException;
+
+import com.google.gson.internal.Streams;
+import com.google.gson.stream.JsonReader;
+import com.google.gson.stream.JsonToken;
+import com.google.gson.stream.MalformedJsonException;
+
+/**
+ * A streaming parser that allows reading of multiple {@link JsonElement}s from the specified reader
+ * asynchronously.
+ * 
+ * <p>This class is conditionally thread-safe (see Item 70, Effective Java second edition). To
+ * properly use this class across multiple threads, you will need to add some external
+ * synchronization.  For example:
+ * 
+ * <pre>
+ * JsonStreamParser parser = new JsonStreamParser("['first'] {'second':10} 'third'");
+ * JsonElement element;
+ * synchronized (parser) {  // synchronize on an object shared by threads
+ *   if (parser.hasNext()) {
+ *     element = parser.next();
+ *   }
+ * }
+ * </pre>
+ *
+ * @author Inderjeet Singh
+ * @author Joel Leitch
+ * @since 1.4
+ */
+public final class JsonStreamParser implements Iterator<JsonElement> {
+  private final JsonReader parser;
+  private final Object lock;
+
+  /**
+   * @param json The string containing JSON elements concatenated to each other.
+   * @since 1.4
+   */
+  public JsonStreamParser(String json) {
+    this(new StringReader(json));      
+  }
+  
+  /**
+   * @param reader The data stream containing JSON elements concatenated to each other.
+   * @since 1.4
+   */
+  public JsonStreamParser(Reader reader) {
+    parser = new JsonReader(reader);
+    parser.setLenient(true);
+    lock = new Object();
+  }
+  
+  /**
+   * Returns the next available {@link JsonElement} on the reader. Null if none available.
+   * 
+   * @return the next available {@link JsonElement} on the reader. Null if none available.
+   * @throws JsonParseException if the incoming stream is malformed JSON.
+   * @since 1.4
+   */
+  public JsonElement next() throws JsonParseException {
+    if (!hasNext()) {
+      throw new NoSuchElementException();
+    }
+    
+    try {
+      return Streams.parse(parser);
+    } catch (StackOverflowError e) {
+      throw new JsonParseException("Failed parsing JSON source to Json", e);
+    } catch (OutOfMemoryError e) {
+      throw new JsonParseException("Failed parsing JSON source to Json", e);
+    } catch (JsonParseException e) {
+      throw e.getCause() instanceof EOFException ? new NoSuchElementException() : e;
+    }
+  }
+
+  /**
+   * Returns true if a {@link JsonElement} is available on the input for consumption
+   * @return true if a {@link JsonElement} is available on the input, false otherwise
+   * @since 1.4
+   */
+  public boolean hasNext() {
+    synchronized (lock) {
+      try {
+        return parser.peek() != JsonToken.END_DOCUMENT;
+      } catch (MalformedJsonException e) {
+        throw new JsonSyntaxException(e);
+      } catch (IOException e) {
+        throw new JsonIOException(e);
+      }
+    }
+  }
+
+  /**
+   * This optional {@link Iterator} method is not relevant for stream parsing and hence is not
+   * implemented.
+   * @since 1.4
+   */
+  public void remove() {
+    throw new UnsupportedOperationException();
+  }
+}

src/com/google/gson/JsonSyntaxException.java

@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2010 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.google.gson;
+
+/**
+ * This exception is raised when Gson attempts to read (or write) a malformed
+ * JSON element.
+ *
+ * @author Inderjeet Singh
+ * @author Joel Leitch
+ */
+public final class JsonSyntaxException extends JsonParseException {
+
+  private static final long serialVersionUID = 1L;
+
+  public JsonSyntaxException(String msg) {
+    super(msg);
+  }
+
+  public JsonSyntaxException(String msg, Throwable cause) {
+    super(msg, cause);
+  }
+
+  /**
+   * Creates exception with the specified cause. Consider using
+   * {@link #JsonSyntaxException(String, Throwable)} instead if you can
+   * describe what actually happened.
+   *
+   * @param cause root exception that caused this exception to be thrown.
+   */
+  public JsonSyntaxException(Throwable cause) {
+    super(cause);
+  }
+}

src/com/google/gson/LongSerializationPolicy.java

@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2009 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson;
+
+/**
+ * Defines the expected format for a {@code long} or {@code Long} type when its serialized.
+ *
+ * @since 1.3
+ *
+ * @author Inderjeet Singh
+ * @author Joel Leitch
+ */
+public enum LongSerializationPolicy {
+  /**
+   * This is the "default" serialization policy that will output a {@code long} object as a JSON
+   * number.  For example, assume an object has a long field named "f" then the serialized output
+   * would be:
+   * {@code {"f":123}}.
+   */
+  DEFAULT() {
+    public JsonElement serialize(Long value) {
+      return new JsonPrimitive(value);
+    }
+  },
+  
+  /**
+   * Serializes a long value as a quoted string.  For example, assume an object has a long field 
+   * named "f" then the serialized output would be:
+   * {@code {"f":"123"}}.
+   */
+  STRING() {
+    public JsonElement serialize(Long value) {
+      return new JsonPrimitive(String.valueOf(value));
+    }
+  };
+  
+  /**
+   * Serialize this {@code value} using this serialization policy.
+   *
+   * @param value the long value to be serialized into a {@link JsonElement}
+   * @return the serialized version of {@code value}
+   */
+  public abstract JsonElement serialize(Long value);
+}

src/com/google/gson/TreeTypeAdapter.java

@@ -0,0 +1,141 @@
+/*
+ * Copyright (C) 2011 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson;
+
+import com.google.gson.internal.$Gson$Preconditions;
+import com.google.gson.internal.GsonInternalAccess;
+import com.google.gson.internal.Streams;
+import com.google.gson.reflect.TypeToken;
+import com.google.gson.stream.JsonReader;
+import com.google.gson.stream.JsonWriter;
+import java.io.IOException;
+
+/**
+ * Adapts a Gson 1.x tree-style adapter as a streaming TypeAdapter. Since the
+ * tree adapter may be serialization-only or deserialization-only, this class
+ * has a facility to lookup a delegate type adapter on demand.
+ */
+final class TreeTypeAdapter<T> extends TypeAdapter<T> {
+  private final JsonSerializer<T> serializer;
+  private final JsonDeserializer<T> deserializer;
+  private final Gson gson;
+  private final TypeToken<T> typeToken;
+  private final TypeAdapterFactory skipPast;
+
+  /** The delegate is lazily created because it may not be needed, and creating it may fail. */
+  private TypeAdapter<T> delegate;
+
+  private TreeTypeAdapter(JsonSerializer<T> serializer, JsonDeserializer<T> deserializer,
+      Gson gson, TypeToken<T> typeToken, TypeAdapterFactory skipPast) {
+    this.serializer = serializer;
+    this.deserializer = deserializer;
+    this.gson = gson;
+    this.typeToken = typeToken;
+    this.skipPast = skipPast;
+  }
+
+  @Override public T read(JsonReader in) throws IOException {
+    if (deserializer == null) {
+      return delegate().read(in);
+    }
+    JsonElement value = Streams.parse(in);
+    if (value.isJsonNull()) {
+      return null;
+    }
+    return deserializer.deserialize(value, typeToken.getType(), gson.deserializationContext);
+  }
+
+  @Override public void write(JsonWriter out, T value) throws IOException {
+    if (serializer == null) {
+      delegate().write(out, value);
+      return;
+    }
+    if (value == null) {
+      out.nullValue();
+      return;
+    }
+    JsonElement tree = serializer.serialize(value, typeToken.getType(), gson.serializationContext);
+    Streams.write(tree, out);
+  }
+
+  private TypeAdapter<T> delegate() {
+    TypeAdapter<T> d = delegate;
+    return d != null
+        ? d
+        : (delegate = GsonInternalAccess.INSTANCE.getNextAdapter(gson, skipPast, typeToken));
+  }
+
+  /**
+   * Returns a new factory that will match each type against {@code exactType}.
+   */
+  public static TypeAdapterFactory newFactory(TypeToken<?> exactType, Object typeAdapter) {
+    return new SingleTypeFactory(typeAdapter, exactType, false, null);
+  }
+
+  /**
+   * Returns a new factory that will match each type and its raw type against
+   * {@code exactType}.
+   */
+  public static TypeAdapterFactory newFactoryWithMatchRawType(
+      TypeToken<?> exactType, Object typeAdapter) {
+    // only bother matching raw types if exact type is a raw type
+    boolean matchRawType = exactType.getType() == exactType.getRawType();
+    return new SingleTypeFactory(typeAdapter, exactType, matchRawType, null);
+  }
+
+  /**
+   * Returns a new factory that will match each type's raw type for assignability
+   * to {@code hierarchyType}.
+   */
+  public static TypeAdapterFactory newTypeHierarchyFactory(
+      Class<?> hierarchyType, Object typeAdapter) {
+    return new SingleTypeFactory(typeAdapter, null, false, hierarchyType);
+  }
+
+  private static class SingleTypeFactory implements TypeAdapterFactory {
+    private final TypeToken<?> exactType;
+    private final boolean matchRawType;
+    private final Class<?> hierarchyType;
+    private final JsonSerializer<?> serializer;
+    private final JsonDeserializer<?> deserializer;
+
+    private SingleTypeFactory(Object typeAdapter, TypeToken<?> exactType, boolean matchRawType,
+        Class<?> hierarchyType) {
+      serializer = typeAdapter instanceof JsonSerializer
+          ? (JsonSerializer<?>) typeAdapter
+          : null;
+      deserializer = typeAdapter instanceof JsonDeserializer
+          ? (JsonDeserializer<?>) typeAdapter
+          : null;
+      $Gson$Preconditions.checkArgument(serializer != null || deserializer != null);
+      this.exactType = exactType;
+      this.matchRawType = matchRawType;
+      this.hierarchyType = hierarchyType;
+    }
+
+    @SuppressWarnings("unchecked") // guarded by typeToken.equals() call
+    public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> type) {
+      boolean matches = exactType != null
+          ? exactType.equals(type) || matchRawType && exactType.getType() == type.getRawType()
+          : hierarchyType.isAssignableFrom(type.getRawType());
+      return matches
+          ? new TreeTypeAdapter<T>((JsonSerializer<T>) serializer,
+              (JsonDeserializer<T>) deserializer, gson, type, this)
+          : null;
+    }
+  }
+}

src/com/google/gson/TypeAdapter.java

@@ -0,0 +1,283 @@
+/*
+ * Copyright (C) 2011 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson;
+
+import com.google.gson.internal.bind.JsonTreeWriter;
+import com.google.gson.internal.bind.JsonTreeReader;
+import com.google.gson.stream.JsonReader;
+import com.google.gson.stream.JsonToken;
+import com.google.gson.stream.JsonWriter;
+import java.io.IOException;
+import java.io.Reader;
+import java.io.StringReader;
+import java.io.StringWriter;
+import java.io.Writer;
+
+/**
+ * Converts Java objects to and from JSON.
+ *
+ * <h3>Defining a type's JSON form</h3>
+ * By default Gson converts application classes to JSON using its built-in type
+ * adapters. If Gson's default JSON conversion isn't appropriate for a type,
+ * extend this class to customize the conversion. Here's an example of a type
+ * adapter for an (X,Y) coordinate point: <pre>   {@code
+ *
+ *   public class PointAdapter extends TypeAdapter<Point> {
+ *     public Point read(JsonReader reader) throws IOException {
+ *       if (reader.peek() == JsonToken.NULL) {
+ *         reader.nextNull();
+ *         return null;
+ *       }
+ *       String xy = reader.nextString();
+ *       String[] parts = xy.split(",");
+ *       int x = Integer.parseInt(parts[0]);
+ *       int y = Integer.parseInt(parts[1]);
+ *       return new Point(x, y);
+ *     }
+ *     public void write(JsonWriter writer, Point value) throws IOException {
+ *       if (value == null) {
+ *         writer.nullValue();
+ *         return;
+ *       }
+ *       String xy = value.getX() + "," + value.getY();
+ *       writer.value(xy);
+ *     }
+ *   }}</pre>
+ * With this type adapter installed, Gson will convert {@code Points} to JSON as
+ * strings like {@code "5,8"} rather than objects like {@code {"x":5,"y":8}}. In
+ * this case the type adapter binds a rich Java class to a compact JSON value.
+ *
+ * <p>The {@link #read(JsonReader) read()} method must read exactly one value
+ * and {@link #write(JsonWriter,Object) write()} must write exactly one value.
+ * For primitive types this is means readers should make exactly one call to
+ * {@code nextBoolean()}, {@code nextDouble()}, {@code nextInt()}, {@code
+ * nextLong()}, {@code nextString()} or {@code nextNull()}. Writers should make
+ * exactly one call to one of <code>value()</code> or <code>nullValue()</code>.
+ * For arrays, type adapters should start with a call to {@code beginArray()},
+ * convert all elements, and finish with a call to {@code endArray()}. For
+ * objects, they should start with {@code beginObject()}, convert the object,
+ * and finish with {@code endObject()}. Failing to convert a value or converting
+ * too many values may cause the application to crash.
+ *
+ * <p>Type adapters should be prepared to read null from the stream and write it
+ * to the stream. Alternatively, they should use {@link #nullSafe()} method while
+ * registering the type adapter with Gson. If your {@code Gson} instance
+ * has been configured to {@link GsonBuilder#serializeNulls()}, these nulls will be
+ * written to the final document. Otherwise the value (and the corresponding name
+ * when writing to a JSON object) will be omitted automatically. In either case
+ * your type adapter must handle null.
+ *
+ * <p>To use a custom type adapter with Gson, you must <i>register</i> it with a
+ * {@link GsonBuilder}: <pre>   {@code
+ *
+ *   GsonBuilder builder = new GsonBuilder();
+ *   builder.registerTypeAdapter(Point.class, new PointAdapter());
+ *   // if PointAdapter didn't check for nulls in its read/write methods, you should instead use
+ *   // builder.registerTypeAdapter(Point.class, new PointAdapter().nullSafe());
+ *   ...
+ *   Gson gson = builder.create();
+ * }</pre>
+ *
+ * @since 2.1
+ */
+// non-Javadoc:
+//
+// <h3>JSON Conversion</h3>
+// <p>A type adapter registered with Gson is automatically invoked while serializing
+// or deserializing JSON. However, you can also use type adapters directly to serialize
+// and deserialize JSON. Here is an example for deserialization: <pre>   {@code
+//
+//   String json = "{'origin':'0,0','points':['1,2','3,4']}";
+//   TypeAdapter<Graph> graphAdapter = gson.getAdapter(Graph.class);
+//   Graph graph = graphAdapter.fromJson(json);
+// }</pre>
+// And an example for serialization: <pre>   {@code
+//
+//   Graph graph = new Graph(...);
+//   TypeAdapter<Graph> graphAdapter = gson.getAdapter(Graph.class);
+//   String json = graphAdapter.toJson(graph);
+// }</pre>
+//
+// <p>Type adapters are <strong>type-specific</strong>. For example, a {@code
+// TypeAdapter<Date>} can convert {@code Date} instances to JSON and JSON to
+// instances of {@code Date}, but cannot convert any other types.
+//
+public abstract class TypeAdapter<T> {
+
+  /**
+   * Writes one JSON value (an array, object, string, number, boolean or null)
+   * for {@code value}.
+   *
+   * @param value the Java object to write. May be null.
+   */
+  public abstract void write(JsonWriter out, T value) throws IOException;
+
+  /**
+   * Converts {@code value} to a JSON document and writes it to {@code out}.
+   * Unlike Gson's similar {@link Gson#toJson(JsonElement, Appendable) toJson}
+   * method, this write is strict. Create a {@link
+   * JsonWriter#setLenient(boolean) lenient} {@code JsonWriter} and call
+   * {@link #write(com.google.gson.stream.JsonWriter, Object)} for lenient
+   * writing.
+   *
+   * @param value the Java object to convert. May be null.
+   */
+  /*public*/ final void toJson(Writer out, T value) throws IOException {
+    JsonWriter writer = new JsonWriter(out);
+    write(writer, value);
+  }
+
+  /**
+   * This wrapper method is used to make a type adapter null tolerant. In general, a
+   * type adapter is required to handle nulls in write and read methods. Here is how this
+   * is typically done:<br>
+   * <pre>   {@code
+   *
+   * Gson gson = new GsonBuilder().registerTypeAdapter(Foo.class,
+   *   new TypeAdapter<Foo>() {
+   *     public Foo read(JsonReader in) throws IOException {
+   *       if (in.peek() == JsonToken.NULL) {
+   *         in.nextNull();
+   *         return null;
+   *       }
+   *       // read a Foo from in and return it
+   *     }
+   *     public void write(JsonWriter out, Foo src) throws IOException {
+   *       if (src == null) {
+   *         out.nullValue();
+   *         return;
+   *       }
+   *       // write src as JSON to out
+   *     }
+   *   }).create();
+   * }</pre>
+   * You can avoid this boilerplate handling of nulls by wrapping your type adapter with
+   * this method. Here is how we will rewrite the above example:
+   * <pre>   {@code
+   *
+   * Gson gson = new GsonBuilder().registerTypeAdapter(Foo.class,
+   *   new TypeAdapter<Foo>() {
+   *     public Foo read(JsonReader in) throws IOException {
+   *       // read a Foo from in and return it
+   *     }
+   *     public void write(JsonWriter out, Foo src) throws IOException {
+   *       // write src as JSON to out
+   *     }
+   *   }.nullSafe()).create();
+   * }</pre>
+   * Note that we didn't need to check for nulls in our type adapter after we used nullSafe.
+   */
+  public final TypeAdapter<T> nullSafe() {
+    return new TypeAdapter<T>() {
+      @Override public void write(JsonWriter out, T value) throws IOException {
+        if (value == null) {
+          out.nullValue();
+        } else {
+          TypeAdapter.this.write(out, value);
+        }
+      }
+      @Override public T read(JsonReader reader) throws IOException {
+        if (reader.peek() == JsonToken.NULL) {
+          reader.nextNull();
+          return null;
+        }
+        return TypeAdapter.this.read(reader);
+      }
+    };
+  }
+
+  /**
+   * Converts {@code value} to a JSON document. Unlike Gson's similar {@link
+   * Gson#toJson(Object) toJson} method, this write is strict. Create a {@link
+   * JsonWriter#setLenient(boolean) lenient} {@code JsonWriter} and call
+   * {@link #write(com.google.gson.stream.JsonWriter, Object)} for lenient
+   * writing.
+   *
+   * @param value the Java object to convert. May be null.
+   */
+  /*public*/ final String toJson(T value) throws IOException {
+    StringWriter stringWriter = new StringWriter();
+    toJson(stringWriter, value);
+    return stringWriter.toString();
+  }
+
+  /**
+   * Converts {@code value} to a JSON tree.
+   *
+   * @param value the Java object to convert. May be null.
+   * @return the converted JSON tree. May be {@link JsonNull}.
+   */
+  /*public*/ final JsonElement toJsonTree(T value) {
+    try {
+      JsonTreeWriter jsonWriter = new JsonTreeWriter();
+      jsonWriter.setLenient(true);
+      write(jsonWriter, value);
+      return jsonWriter.get();
+    } catch (IOException e) {
+      throw new JsonIOException(e);
+    }
+  }
+
+  /**
+   * Reads one JSON value (an array, object, string, number, boolean or null)
+   * and converts it to a Java object. Returns the converted object.
+   *
+   * @return the converted Java object. May be null.
+   */
+  public abstract T read(JsonReader in) throws IOException;
+
+  /**
+   * Converts the JSON document in {@code in} to a Java object. Unlike Gson's
+   * similar {@link Gson#fromJson(java.io.Reader, Class) fromJson} method, this
+   * read is strict. Create a {@link JsonReader#setLenient(boolean) lenient}
+   * {@code JsonReader} and call {@link #read(JsonReader)} for lenient reading.
+   *
+   * @return the converted Java object. May be null.
+   */
+  /*public*/ final T fromJson(Reader in) throws IOException {
+    JsonReader reader = new JsonReader(in);
+    reader.setLenient(true); // TODO: non-lenient?
+    return read(reader);
+  }
+
+  /**
+   * Converts the JSON document in {@code json} to a Java object. Unlike Gson's
+   * similar {@link Gson#fromJson(String, Class) fromJson} method, this read is
+   * strict. Create a {@link JsonReader#setLenient(boolean) lenient} {@code
+   * JsonReader} and call {@link #read(JsonReader)} for lenient reading.
+   *
+   * @return the converted Java object. May be null.
+   */
+  /*public*/ final T fromJson(String json) throws IOException {
+    return fromJson(new StringReader(json));
+  }
+
+  /**
+   * Converts {@code jsonTree} to a Java object.
+   *
+   * @param jsonTree the Java object to convert. May be {@link JsonNull}.
+   */
+  /*public*/ final T fromJsonTree(JsonElement jsonTree) {
+    try {
+      JsonReader jsonReader = new JsonTreeReader(jsonTree);
+      jsonReader.setLenient(true);
+      return read(jsonReader);
+    } catch (IOException e) {
+      throw new JsonIOException(e);
+    }
+  }
+}

src/com/google/gson/TypeAdapterFactory.java

@@ -0,0 +1,170 @@
+/*
+ * Copyright (C) 2011 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson;
+
+import com.google.gson.reflect.TypeToken;
+
+/**
+ * Creates type adapters for set of related types. Type adapter factories are
+ * most useful when several types share similar structure in their JSON form.
+ *
+ * <h3>Example: Converting enums to lowercase</h3>
+ * In this example, we implement a factory that creates type adapters for all
+ * enums. The type adapters will write enums in lowercase, despite the fact
+ * that they're defined in {@code CONSTANT_CASE} in the corresponding Java
+ * model: <pre>   {@code
+ *
+ *   public class LowercaseEnumTypeAdapterFactory implements TypeAdapter.Factory {
+ *     public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> type) {
+ *       Class<T> rawType = (Class<T>) type.getRawType();
+ *       if (!rawType.isEnum()) {
+ *         return null;
+ *       }
+ *
+ *       final Map<String, T> lowercaseToConstant = new HashMap<String, T>();
+ *       for (T constant : rawType.getEnumConstants()) {
+ *         lowercaseToConstant.put(toLowercase(constant), constant);
+ *       }
+ *
+ *       return new TypeAdapter<T>() {
+ *         public void write(JsonWriter out, T value) throws IOException {
+ *           if (value == null) {
+ *             out.nullValue();
+ *           } else {
+ *             out.value(toLowercase(value));
+ *           }
+ *         }
+ *
+ *         public T read(JsonReader reader) throws IOException {
+ *           if (reader.peek() == JsonToken.NULL) {
+ *             reader.nextNull();
+ *             return null;
+ *           } else {
+ *             return lowercaseToConstant.get(reader.nextString());
+ *           }
+ *         }
+ *       };
+ *     }
+ *
+ *     private String toLowercase(Object o) {
+ *       return o.toString().toLowerCase(Locale.US);
+ *     }
+ *   }
+ * }</pre>
+ *
+ * <p>Type adapter factories select which types they provide type adapters
+ * for. If a factory cannot support a given type, it must return null when
+ * that type is passed to {@link #create}. Factories should expect {@code
+ * create()} to be called on them for many types and should return null for
+ * most of those types. In the above example the factory returns null for
+ * calls to {@code create()} where {@code type} is not an enum.
+ *
+ * <p>A factory is typically called once per type, but the returned type
+ * adapter may be used many times. It is most efficient to do expensive work
+ * like reflection in {@code create()} so that the type adapter's {@code
+ * read()} and {@code write()} methods can be very fast. In this example the
+ * mapping from lowercase name to enum value is computed eagerly.
+ *
+ * <p>As with type adapters, factories must be <i>registered</i> with a {@link
+ * com.google.gson.GsonBuilder} for them to take effect: <pre>   {@code
+ *
+ *  GsonBuilder builder = new GsonBuilder();
+ *  builder.registerTypeAdapterFactory(new LowercaseEnumTypeAdapterFactory());
+ *  ...
+ *  Gson gson = builder.create();
+ * }</pre>
+ * If multiple factories support the same type, the factory registered earlier
+ * takes precedence.
+ *
+ * <h3>Example: composing other type adapters</h3>
+ * In this example we implement a factory for Guava's {@code Multiset}
+ * collection type. The factory can be used to create type adapters for
+ * multisets of any element type: the type adapter for {@code
+ * Multiset<String>} is different from the type adapter for {@code
+ * Multiset<URL>}.
+ *
+ * <p>The type adapter <i>delegates</i> to another type adapter for the
+ * multiset elements. It figures out the element type by reflecting on the
+ * multiset's type token. A {@code Gson} is passed in to {@code create} for
+ * just this purpose: <pre>   {@code
+ *
+ *   public class MultisetTypeAdapterFactory implements TypeAdapter.Factory {
+ *     public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> typeToken) {
+ *       Type type = typeToken.getType();
+ *       if (typeToken.getRawType() != Multiset.class
+ *           || !(type instanceof ParameterizedType)) {
+ *         return null;
+ *       }
+ *
+ *       Type elementType = ((ParameterizedType) type).getActualTypeArguments()[0];
+ *       TypeAdapter<?> elementAdapter = gson.getAdapter(TypeToken.get(elementType));
+ *       return (TypeAdapter<T>) newMultisetAdapter(elementAdapter);
+ *     }
+ *
+ *     private <E> TypeAdapter<Multiset<E>> newMultisetAdapter(
+ *         final TypeAdapter<E> elementAdapter) {
+ *       return new TypeAdapter<Multiset<E>>() {
+ *         public void write(JsonWriter out, Multiset<E> value) throws IOException {
+ *           if (value == null) {
+ *             out.nullValue();
+ *             return;
+ *           }
+ *
+ *           out.beginArray();
+ *           for (Multiset.Entry<E> entry : value.entrySet()) {
+ *             out.value(entry.getCount());
+ *             elementAdapter.write(out, entry.getElement());
+ *           }
+ *           out.endArray();
+ *         }
+ *
+ *         public Multiset<E> read(JsonReader in) throws IOException {
+ *           if (in.peek() == JsonToken.NULL) {
+ *             in.nextNull();
+ *             return null;
+ *           }
+ *
+ *           Multiset<E> result = LinkedHashMultiset.create();
+ *           in.beginArray();
+ *           while (in.hasNext()) {
+ *             int count = in.nextInt();
+ *             E element = elementAdapter.read(in);
+ *             result.add(element, count);
+ *           }
+ *           in.endArray();
+ *           return result;
+ *         }
+ *       };
+ *     }
+ *   }
+ * }</pre>
+ * Delegating from one type adapter to another is extremely powerful; it's
+ * the foundation of how Gson converts Java objects and collections. Whenever
+ * possible your factory should retrieve its delegate type adapter in the
+ * {@code create()} method; this ensures potentially-expensive type adapter
+ * creation happens only once.
+ *
+ * @since 2.1
+ */
+public interface TypeAdapterFactory {
+
+  /**
+   * Returns a type adapter for {@code type}, or null if this factory doesn't
+   * support {@code type}.
+   */
+  <T> TypeAdapter<T> create(Gson gson, TypeToken<T> type);
+}

src/com/google/gson/annotations/Expose.java

@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2008 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson.annotations;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * An annotation that indicates this member should be exposed for JSON
+ * serialization or deserialization.
+ *
+ * <p>This annotation has no effect unless you build {@link com.google.gson.Gson}
+ * with a {@link com.google.gson.GsonBuilder} and invoke
+ * {@link com.google.gson.GsonBuilder#excludeFieldsWithoutExposeAnnotation()}
+ * method.</p>
+ *
+ * <p>Here is an example of how this annotation is meant to be used:
+ * <p><pre>
+ * public class User {
+ *   &#64Expose private String firstName;
+ *   &#64Expose(serialize = false) private String lastName;
+ *   &#64Expose (serialize = false, deserialize = false) private String emailAddress;
+ *   private String password;
+ * }
+ * </pre></p>
+ * If you created Gson with {@code new Gson()}, the {@code toJson()} and {@code fromJson()}
+ * methods will use the {@code password} field along-with {@code firstName}, {@code lastName},
+ * and {@code emailAddress} for serialization and deserialization. However, if you created Gson
+ * with {@code Gson gson = new GsonBuilder().excludeFieldsWithoutExposeAnnotation().create()}
+ * then the {@code toJson()} and {@code fromJson()} methods of Gson will exclude the
+ * {@code password} field. This is because the {@code password} field is not marked with the
+ * {@code @Expose} annotation. Gson will also exclude {@code lastName} and {@code emailAddress}
+ * from serialization since {@code serialize} is set to {@code false}. Similarly, Gson will
+ * exclude {@code emailAddress} from deserialization since {@code deserialize} is set to false.
+ *
+ * <p>Note that another way to achieve the same effect would have been to just mark the
+ * {@code password} field as {@code transient}, and Gson would have excluded it even with default
+ * settings. The {@code @Expose} annotation is useful in a style of programming where you want to
+ * explicitly specify all fields that should get considered for serialization or deserialization.
+ *
+ * @author Inderjeet Singh
+ * @author Joel Leitch
+ */
+@Retention(RetentionPolicy.RUNTIME)
+@Target(ElementType.FIELD)
+public @interface Expose {
+  
+  /**
+   * If {@code true}, the field marked with this annotation is written out in the JSON while
+   * serializing. If {@code false}, the field marked with this annotation is skipped from the
+   * serialized output. Defaults to {@code true}.
+   * @since 1.4
+   */
+  public boolean serialize() default true;
+
+  /**
+   * If {@code true}, the field marked with this annotation is deserialized from the JSON.
+   * If {@code false}, the field marked with this annotation is skipped during deserialization. 
+   * Defaults to {@code true}.
+   * @since 1.4
+   */
+  public boolean deserialize() default true;
+}

src/com/google/gson/annotations/SerializedName.java

@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2008 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson.annotations;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * An annotation that indicates this member should be serialized to JSON with
+ * the provided name value as its field name.
+ *
+ * <p>This annotation will override any {@link com.google.gson.FieldNamingPolicy}, including
+ * the default field naming policy, that may have been set on the {@link com.google.gson.Gson}
+ * instance.  A different naming policy can set using the {@code GsonBuilder} class.  See
+ * {@link com.google.gson.GsonBuilder#setFieldNamingPolicy(com.google.gson.FieldNamingPolicy)}
+ * for more information.</p>
+ *
+ * <p>Here is an example of how this annotation is meant to be used:</p>
+ * <pre>
+ * public class SomeClassWithFields {
+ *   &#64SerializedName("name") private final String someField;
+ *   private final String someOtherField;
+ *
+ *   public SomeClassWithFields(String a, String b) {
+ *     this.someField = a;
+ *     this.someOtherField = b;
+ *   }
+ * }
+ * </pre>
+ *
+ * <p>The following shows the output that is generated when serializing an instance of the
+ * above example class:</p>
+ * <pre>
+ * SomeClassWithFields objectToSerialize = new SomeClassWithFields("a", "b");
+ * Gson gson = new Gson();
+ * String jsonRepresentation = gson.toJson(objectToSerialize);
+ * System.out.println(jsonRepresentation);
+ *
+ * ===== OUTPUT =====
+ * {"name":"a","someOtherField":"b"}
+ * </pre>
+ *
+ * <p>NOTE: The value you specify in this annotation must be a valid JSON field name.</p>
+ *
+ * @see com.google.gson.FieldNamingPolicy
+ *
+ * @author Inderjeet Singh
+ * @author Joel Leitch
+ */
+@Retention(RetentionPolicy.RUNTIME)
+@Target(ElementType.FIELD)
+public @interface SerializedName {
+
+  /**
+   * @return the desired name of the field when it is serialized
+   */
+  String value();
+}

src/com/google/gson/annotations/Since.java

@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2008 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson.annotations;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * An annotation that indicates the version number since a member or a type has been present.
+ * This annotation is useful to manage versioning of your Json classes for a web-service.
+ *
+ * <p>
+ * This annotation has no effect unless you build {@link com.google.gson.Gson} with a
+ * {@link com.google.gson.GsonBuilder} and invoke
+ * {@link com.google.gson.GsonBuilder#setVersion(double)} method.
+ *
+ * <p>Here is an example of how this annotation is meant to be used:</p>
+ * <pre>
+ * public class User {
+ *   private String firstName;
+ *   private String lastName;
+ *   &#64Since(1.0) private String emailAddress;
+ *   &#64Since(1.0) private String password;
+ *   &#64Since(1.1) private Address address;
+ * }
+ * </pre>
+ *
+ * <p>If you created Gson with {@code new Gson()}, the {@code toJson()} and {@code fromJson()}
+ * methods will use all the fields for serialization and deserialization. However, if you created
+ * Gson with {@code Gson gson = new GsonBuilder().setVersion(1.0).create()} then the
+ * {@code toJson()} and {@code fromJson()} methods of Gson will exclude the {@code address} field
+ * since it's version number is set to {@code 1.1}.</p>
+ *
+ * @author Inderjeet Singh
+ * @author Joel Leitch
+ */
+@Retention(RetentionPolicy.RUNTIME)
+@Target({ElementType.FIELD, ElementType.TYPE})
+public @interface Since {
+  /**
+   * the value indicating a version number since this member
+   * or type has been present.
+   */
+  double value();
+}

src/com/google/gson/annotations/Until.java

@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2008 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson.annotations;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * An annotation that indicates the version number until a member or a type should be present.
+ * Basically, if Gson is created with a version number that exceeds the value stored in the
+ * {@code Until} annotation then the field will be ignored from the JSON output.  This annotation
+ * is useful to manage versioning of your JSON classes for a web-service.
+ *
+ * <p>
+ * This annotation has no effect unless you build {@link com.google.gson.Gson} with a
+ * {@link com.google.gson.GsonBuilder} and invoke
+ * {@link com.google.gson.GsonBuilder#setVersion(double)} method.
+ *
+ * <p>Here is an example of how this annotation is meant to be used:</p>
+ * <pre>
+ * public class User {
+ *   private String firstName;
+ *   private String lastName;
+ *   &#64Until(1.1) private String emailAddress;
+ *   &#64Until(1.1) private String password;
+ * }
+ * </pre>
+ *
+ * <p>If you created Gson with {@code new Gson()}, the {@code toJson()} and {@code fromJson()}
+ * methods will use all the fields for serialization and deserialization. However, if you created
+ * Gson with {@code Gson gson = new GsonBuilder().setVersion(1.2).create()} then the
+ * {@code toJson()} and {@code fromJson()} methods of Gson will exclude the {@code emailAddress}
+ * and {@code password} fields from the example above, because the version number passed to the 
+ * GsonBuilder, {@code 1.2}, exceeds the version number set on the {@code Until} annotation,
+ * {@code 1.1}, for those fields.
+ *
+ * @author Inderjeet Singh
+ * @author Joel Leitch
+ * @since 1.3
+ */
+@Retention(RetentionPolicy.RUNTIME)
+@Target({ElementType.FIELD, ElementType.TYPE})
+public @interface Until {
+
+  /**
+   * the value indicating a version number until this member
+   * or type should be ignored.
+   */
+  double value();
+}

src/com/google/gson/annotations/package-info.java

@@ -0,0 +1,6 @@
+/**
+ * This package provides annotations that can be used with {@link com.google.gson.Gson}.
+ * 
+ * @author Inderjeet Singh, Joel Leitch
+ */
+package com.google.gson.annotations;

src/com/google/gson/internal/$Gson$Preconditions.java

@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2008 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson.internal;
+
+/**
+ * A simple utility class used to check method Preconditions.
+ *
+ * <pre>
+ * public long divideBy(long value) {
+ *   Preconditions.checkArgument(value != 0);
+ *   return this.value / value;
+ * }
+ * </pre>
+ *
+ * @author Inderjeet Singh
+ * @author Joel Leitch
+ */
+public final class $Gson$Preconditions {
+  public static <T> T checkNotNull(T obj) {
+    if (obj == null) {
+      throw new NullPointerException();
+    }
+    return obj;
+  }
+
+  public static void checkArgument(boolean condition) {
+    if (!condition) {
+      throw new IllegalArgumentException();
+    }
+  }
+}

src/com/google/gson/internal/$Gson$Types.java

@@ -0,0 +1,584 @@
+/**
+ * Copyright (C) 2008 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson.internal;
+
+import static com.google.gson.internal.$Gson$Preconditions.checkArgument;
+import static com.google.gson.internal.$Gson$Preconditions.checkNotNull;
+
+import java.io.Serializable;
+import java.lang.reflect.Array;
+import java.lang.reflect.GenericArrayType;
+import java.lang.reflect.GenericDeclaration;
+import java.lang.reflect.ParameterizedType;
+import java.lang.reflect.Type;
+import java.lang.reflect.TypeVariable;
+import java.lang.reflect.WildcardType;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Map;
+import java.util.NoSuchElementException;
+import java.util.Properties;
+
+/**
+ * Static methods for working with types.
+ *
+ * @author Bob Lee
+ * @author Jesse Wilson
+ */
+public final class $Gson$Types {
+  static final Type[] EMPTY_TYPE_ARRAY = new Type[] {};
+
+  private $Gson$Types() {}
+
+  /**
+   * Returns a new parameterized type, applying {@code typeArguments} to
+   * {@code rawType} and enclosed by {@code ownerType}.
+   *
+   * @return a {@link java.io.Serializable serializable} parameterized type.
+   */
+  public static ParameterizedType newParameterizedTypeWithOwner(
+      Type ownerType, Type rawType, Type... typeArguments) {
+    return new ParameterizedTypeImpl(ownerType, rawType, typeArguments);
+  }
+
+  /**
+   * Returns an array type whose elements are all instances of
+   * {@code componentType}.
+   *
+   * @return a {@link java.io.Serializable serializable} generic array type.
+   */
+  public static GenericArrayType arrayOf(Type componentType) {
+    return new GenericArrayTypeImpl(componentType);
+  }
+
+  /**
+   * Returns a type that represents an unknown type that extends {@code bound}.
+   * For example, if {@code bound} is {@code CharSequence.class}, this returns
+   * {@code ? extends CharSequence}. If {@code bound} is {@code Object.class},
+   * this returns {@code ?}, which is shorthand for {@code ? extends Object}.
+   */
+  public static WildcardType subtypeOf(Type bound) {
+    return new WildcardTypeImpl(new Type[] { bound }, EMPTY_TYPE_ARRAY);
+  }
+
+  /**
+   * Returns a type that represents an unknown supertype of {@code bound}. For
+   * example, if {@code bound} is {@code String.class}, this returns {@code ?
+   * super String}.
+   */
+  public static WildcardType supertypeOf(Type bound) {
+    return new WildcardTypeImpl(new Type[] { Object.class }, new Type[] { bound });
+  }
+
+  /**
+   * Returns a type that is functionally equal but not necessarily equal
+   * according to {@link Object#equals(Object) Object.equals()}. The returned
+   * type is {@link java.io.Serializable}.
+   */
+  public static Type canonicalize(Type type) {
+    if (type instanceof Class) {
+      Class<?> c = (Class<?>) type;
+      return c.isArray() ? new GenericArrayTypeImpl(canonicalize(c.getComponentType())) : c;
+
+    } else if (type instanceof ParameterizedType) {
+      ParameterizedType p = (ParameterizedType) type;
+      return new ParameterizedTypeImpl(p.getOwnerType(),
+          p.getRawType(), p.getActualTypeArguments());
+
+    } else if (type instanceof GenericArrayType) {
+      GenericArrayType g = (GenericArrayType) type;
+      return new GenericArrayTypeImpl(g.getGenericComponentType());
+
+    } else if (type instanceof WildcardType) {
+      WildcardType w = (WildcardType) type;
+      return new WildcardTypeImpl(w.getUpperBounds(), w.getLowerBounds());
+
+    } else {
+      // type is either serializable as-is or unsupported
+      return type;
+    }
+  }
+
+  public static Class<?> getRawType(Type type) {
+    if (type instanceof Class<?>) {
+      // type is a normal class.
+      return (Class<?>) type;
+
+    } else if (type instanceof ParameterizedType) {
+      ParameterizedType parameterizedType = (ParameterizedType) type;
+
+      // I'm not exactly sure why getRawType() returns Type instead of Class.
+      // Neal isn't either but suspects some pathological case related
+      // to nested classes exists.
+      Type rawType = parameterizedType.getRawType();
+      checkArgument(rawType instanceof Class);
+      return (Class<?>) rawType;
+
+    } else if (type instanceof GenericArrayType) {
+      Type componentType = ((GenericArrayType)type).getGenericComponentType();
+      return Array.newInstance(getRawType(componentType), 0).getClass();
+
+    } else if (type instanceof TypeVariable) {
+      // we could use the variable's bounds, but that won't work if there are multiple.
+      // having a raw type that's more general than necessary is okay
+      return Object.class;
+
+    } else if (type instanceof WildcardType) {
+      return getRawType(((WildcardType) type).getUpperBounds()[0]);
+
+    } else {
+      String className = type == null ? "null" : type.getClass().getName();
+      throw new IllegalArgumentException("Expected a Class, ParameterizedType, or "
+          + "GenericArrayType, but <" + type + "> is of type " + className);
+    }
+  }
+
+  static boolean equal(Object a, Object b) {
+    return a == b || (a != null && a.equals(b));
+  }
+
+  /**
+   * Returns true if {@code a} and {@code b} are equal.
+   */
+  public static boolean equals(Type a, Type b) {
+    if (a == b) {
+      // also handles (a == null && b == null)
+      return true;
+
+    } else if (a instanceof Class) {
+      // Class already specifies equals().
+      return a.equals(b);
+
+    } else if (a instanceof ParameterizedType) {
+      if (!(b instanceof ParameterizedType)) {
+        return false;
+      }
+
+      // TODO: save a .clone() call
+      ParameterizedType pa = (ParameterizedType) a;
+      ParameterizedType pb = (ParameterizedType) b;
+      return equal(pa.getOwnerType(), pb.getOwnerType())
+          && pa.getRawType().equals(pb.getRawType())
+          && Arrays.equals(pa.getActualTypeArguments(), pb.getActualTypeArguments());
+
+    } else if (a instanceof GenericArrayType) {
+      if (!(b instanceof GenericArrayType)) {
+        return false;
+      }
+
+      GenericArrayType ga = (GenericArrayType) a;
+      GenericArrayType gb = (GenericArrayType) b;
+      return equals(ga.getGenericComponentType(), gb.getGenericComponentType());
+
+    } else if (a instanceof WildcardType) {
+      if (!(b instanceof WildcardType)) {
+        return false;
+      }
+
+      WildcardType wa = (WildcardType) a;
+      WildcardType wb = (WildcardType) b;
+      return Arrays.equals(wa.getUpperBounds(), wb.getUpperBounds())
+          && Arrays.equals(wa.getLowerBounds(), wb.getLowerBounds());
+
+    } else if (a instanceof TypeVariable) {
+      if (!(b instanceof TypeVariable)) {
+        return false;
+      }
+      TypeVariable<?> va = (TypeVariable<?>) a;
+      TypeVariable<?> vb = (TypeVariable<?>) b;
+      return va.getGenericDeclaration() == vb.getGenericDeclaration()
+          && va.getName().equals(vb.getName());
+
+    } else {
+      // This isn't a type we support. Could be a generic array type, wildcard type, etc.
+      return false;
+    }
+  }
+
+  private static int hashCodeOrZero(Object o) {
+    return o != null ? o.hashCode() : 0;
+  }
+
+  public static String typeToString(Type type) {
+    return type instanceof Class ? ((Class<?>) type).getName() : type.toString();
+  }
+
+  /**
+   * Returns the generic supertype for {@code supertype}. For example, given a class {@code
+   * IntegerSet}, the result for when supertype is {@code Set.class} is {@code Set<Integer>} and the
+   * result when the supertype is {@code Collection.class} is {@code Collection<Integer>}.
+   */
+  static Type getGenericSupertype(Type context, Class<?> rawType, Class<?> toResolve) {
+    if (toResolve == rawType) {
+      return context;
+    }
+
+    // we skip searching through interfaces if unknown is an interface
+    if (toResolve.isInterface()) {
+      Class<?>[] interfaces = rawType.getInterfaces();
+      for (int i = 0, length = interfaces.length; i < length; i++) {
+        if (interfaces[i] == toResolve) {
+          return rawType.getGenericInterfaces()[i];
+        } else if (toResolve.isAssignableFrom(interfaces[i])) {
+          return getGenericSupertype(rawType.getGenericInterfaces()[i], interfaces[i], toResolve);
+        }
+      }
+    }
+
+    // check our supertypes
+    if (!rawType.isInterface()) {
+      while (rawType != Object.class) {
+        Class<?> rawSupertype = rawType.getSuperclass();
+        if (rawSupertype == toResolve) {
+          return rawType.getGenericSuperclass();
+        } else if (toResolve.isAssignableFrom(rawSupertype)) {
+          return getGenericSupertype(rawType.getGenericSuperclass(), rawSupertype, toResolve);
+        }
+        rawType = rawSupertype;
+      }
+    }
+
+    // we can't resolve this further
+    return toResolve;
+  }
+
+  /**
+   * Returns the generic form of {@code supertype}. For example, if this is {@code
+   * ArrayList<String>}, this returns {@code Iterable<String>} given the input {@code
+   * Iterable.class}.
+   *
+   * @param supertype a superclass of, or interface implemented by, this.
+   */
+  static Type getSupertype(Type context, Class<?> contextRawType, Class<?> supertype) {
+    checkArgument(supertype.isAssignableFrom(contextRawType));
+    return resolve(context, contextRawType,
+        $Gson$Types.getGenericSupertype(context, contextRawType, supertype));
+  }
+
+  /**
+   * Returns the component type of this array type.
+   * @throws ClassCastException if this type is not an array.
+   */
+  public static Type getArrayComponentType(Type array) {
+    return array instanceof GenericArrayType
+        ? ((GenericArrayType) array).getGenericComponentType()
+        : ((Class<?>) array).getComponentType();
+  }
+
+  /**
+   * Returns the element type of this collection type.
+   * @throws IllegalArgumentException if this type is not a collection.
+   */
+  public static Type getCollectionElementType(Type context, Class<?> contextRawType) {
+    Type collectionType = getSupertype(context, contextRawType, Collection.class);
+
+    if (collectionType instanceof WildcardType) {
+      collectionType = ((WildcardType)collectionType).getUpperBounds()[0];
+    }
+    if (collectionType instanceof ParameterizedType) {
+      return ((ParameterizedType) collectionType).getActualTypeArguments()[0];
+    }
+    return Object.class;
+  }
+
+  /**
+   * Returns a two element array containing this map's key and value types in
+   * positions 0 and 1 respectively.
+   */
+  public static Type[] getMapKeyAndValueTypes(Type context, Class<?> contextRawType) {
+    /*
+     * Work around a problem with the declaration of java.util.Properties. That
+     * class should extend Hashtable<String, String>, but it's declared to
+     * extend Hashtable<Object, Object>.
+     */
+    if (context == Properties.class) {
+      return new Type[] { String.class, String.class }; // TODO: test subclasses of Properties!
+    }
+
+    Type mapType = getSupertype(context, contextRawType, Map.class);
+    // TODO: strip wildcards?
+    if (mapType instanceof ParameterizedType) {
+      ParameterizedType mapParameterizedType = (ParameterizedType) mapType;
+      return mapParameterizedType.getActualTypeArguments();
+    }
+    return new Type[] { Object.class, Object.class };
+  }
+
+  public static Type resolve(Type context, Class<?> contextRawType, Type toResolve) {
+    // this implementation is made a little more complicated in an attempt to avoid object-creation
+    while (true) {
+      if (toResolve instanceof TypeVariable) {
+        TypeVariable<?> typeVariable = (TypeVariable<?>) toResolve;
+        toResolve = resolveTypeVariable(context, contextRawType, typeVariable);
+        if (toResolve == typeVariable) {
+          return toResolve;
+        }
+
+      } else if (toResolve instanceof Class && ((Class<?>) toResolve).isArray()) {
+        Class<?> original = (Class<?>) toResolve;
+        Type componentType = original.getComponentType();
+        Type newComponentType = resolve(context, contextRawType, componentType);
+        return componentType == newComponentType
+            ? original
+            : arrayOf(newComponentType);
+
+      } else if (toResolve instanceof GenericArrayType) {
+        GenericArrayType original = (GenericArrayType) toResolve;
+        Type componentType = original.getGenericComponentType();
+        Type newComponentType = resolve(context, contextRawType, componentType);
+        return componentType == newComponentType
+            ? original
+            : arrayOf(newComponentType);
+
+      } else if (toResolve instanceof ParameterizedType) {
+        ParameterizedType original = (ParameterizedType) toResolve;
+        Type ownerType = original.getOwnerType();
+        Type newOwnerType = resolve(context, contextRawType, ownerType);
+        boolean changed = newOwnerType != ownerType;
+
+        Type[] args = original.getActualTypeArguments();
+        for (int t = 0, length = args.length; t < length; t++) {
+          Type resolvedTypeArgument = resolve(context, contextRawType, args[t]);
+          if (resolvedTypeArgument != args[t]) {
+            if (!changed) {
+              args = args.clone();
+              changed = true;
+            }
+            args[t] = resolvedTypeArgument;
+          }
+        }
+
+        return changed
+            ? newParameterizedTypeWithOwner(newOwnerType, original.getRawType(), args)
+            : original;
+
+      } else if (toResolve instanceof WildcardType) {
+        WildcardType original = (WildcardType) toResolve;
+        Type[] originalLowerBound = original.getLowerBounds();
+        Type[] originalUpperBound = original.getUpperBounds();
+
+        if (originalLowerBound.length == 1) {
+          Type lowerBound = resolve(context, contextRawType, originalLowerBound[0]);
+          if (lowerBound != originalLowerBound[0]) {
+            return supertypeOf(lowerBound);
+          }
+        } else if (originalUpperBound.length == 1) {
+          Type upperBound = resolve(context, contextRawType, originalUpperBound[0]);
+          if (upperBound != originalUpperBound[0]) {
+            return subtypeOf(upperBound);
+          }
+        }
+        return original;
+
+      } else {
+        return toResolve;
+      }
+    }
+  }
+
+  static Type resolveTypeVariable(Type context, Class<?> contextRawType, TypeVariable<?> unknown) {
+    Class<?> declaredByRaw = declaringClassOf(unknown);
+
+    // we can't reduce this further
+    if (declaredByRaw == null) {
+      return unknown;
+    }
+
+    Type declaredBy = getGenericSupertype(context, contextRawType, declaredByRaw);
+    if (declaredBy instanceof ParameterizedType) {
+      int index = indexOf(declaredByRaw.getTypeParameters(), unknown);
+      return ((ParameterizedType) declaredBy).getActualTypeArguments()[index];
+    }
+
+    return unknown;
+  }
+
+  private static int indexOf(Object[] array, Object toFind) {
+    for (int i = 0; i < array.length; i++) {
+      if (toFind.equals(array[i])) {
+        return i;
+      }
+    }
+    throw new NoSuchElementException();
+  }
+
+  /**
+   * Returns the declaring class of {@code typeVariable}, or {@code null} if it was not declared by
+   * a class.
+   */
+  private static Class<?> declaringClassOf(TypeVariable<?> typeVariable) {
+    GenericDeclaration genericDeclaration = typeVariable.getGenericDeclaration();
+    return genericDeclaration instanceof Class
+        ? (Class<?>) genericDeclaration
+        : null;
+  }
+
+  private static void checkNotPrimitive(Type type) {
+    checkArgument(!(type instanceof Class<?>) || !((Class<?>) type).isPrimitive());
+  }
+
+  private static final class ParameterizedTypeImpl implements ParameterizedType, Serializable {
+    private final Type ownerType;
+    private final Type rawType;
+    private final Type[] typeArguments;
+
+    public ParameterizedTypeImpl(Type ownerType, Type rawType, Type... typeArguments) {
+      // require an owner type if the raw type needs it
+      if (rawType instanceof Class<?>) {
+        Class<?> rawTypeAsClass = (Class<?>) rawType;
+        checkArgument(ownerType != null || rawTypeAsClass.getEnclosingClass() == null);
+        checkArgument(ownerType == null || rawTypeAsClass.getEnclosingClass() != null);
+      }
+
+      this.ownerType = ownerType == null ? null : canonicalize(ownerType);
+      this.rawType = canonicalize(rawType);
+      this.typeArguments = typeArguments.clone();
+      for (int t = 0; t < this.typeArguments.length; t++) {
+        checkNotNull(this.typeArguments[t]);
+        checkNotPrimitive(this.typeArguments[t]);
+        this.typeArguments[t] = canonicalize(this.typeArguments[t]);
+      }
+    }
+
+    public Type[] getActualTypeArguments() {
+      return typeArguments.clone();
+    }
+
+    public Type getRawType() {
+      return rawType;
+    }
+
+    public Type getOwnerType() {
+      return ownerType;
+    }
+
+    @Override public boolean equals(Object other) {
+      return other instanceof ParameterizedType
+          && $Gson$Types.equals(this, (ParameterizedType) other);
+    }
+
+    @Override public int hashCode() {
+      return Arrays.hashCode(typeArguments)
+          ^ rawType.hashCode()
+          ^ hashCodeOrZero(ownerType);
+    }
+
+    @Override public String toString() {
+      StringBuilder stringBuilder = new StringBuilder(30 * (typeArguments.length + 1));
+      stringBuilder.append(typeToString(rawType));
+
+      if (typeArguments.length == 0) {
+        return stringBuilder.toString();
+      }
+
+      stringBuilder.append("<").append(typeToString(typeArguments[0]));
+      for (int i = 1; i < typeArguments.length; i++) {
+        stringBuilder.append(", ").append(typeToString(typeArguments[i]));
+      }
+      return stringBuilder.append(">").toString();
+    }
+
+    private static final long serialVersionUID = 0;
+  }
+
+  private static final class GenericArrayTypeImpl implements GenericArrayType, Serializable {
+    private final Type componentType;
+
+    public GenericArrayTypeImpl(Type componentType) {
+      this.componentType = canonicalize(componentType);
+    }
+
+    public Type getGenericComponentType() {
+      return componentType;
+    }
+
+    @Override public boolean equals(Object o) {
+      return o instanceof GenericArrayType
+          && $Gson$Types.equals(this, (GenericArrayType) o);
+    }
+
+    @Override public int hashCode() {
+      return componentType.hashCode();
+    }
+
+    @Override public String toString() {
+      return typeToString(componentType) + "[]";
+    }
+
+    private static final long serialVersionUID = 0;
+  }
+
+  /**
+   * The WildcardType interface supports multiple upper bounds and multiple
+   * lower bounds. We only support what the Java 6 language needs - at most one
+   * bound. If a lower bound is set, the upper bound must be Object.class.
+   */
+  private static final class WildcardTypeImpl implements WildcardType, Serializable {
+    private final Type upperBound;
+    private final Type lowerBound;
+
+    public WildcardTypeImpl(Type[] upperBounds, Type[] lowerBounds) {
+      checkArgument(lowerBounds.length <= 1);
+      checkArgument(upperBounds.length == 1);
+
+      if (lowerBounds.length == 1) {
+        checkNotNull(lowerBounds[0]);
+        checkNotPrimitive(lowerBounds[0]);
+        checkArgument(upperBounds[0] == Object.class);
+        this.lowerBound = canonicalize(lowerBounds[0]);
+        this.upperBound = Object.class;
+
+      } else {
+        checkNotNull(upperBounds[0]);
+        checkNotPrimitive(upperBounds[0]);
+        this.lowerBound = null;
+        this.upperBound = canonicalize(upperBounds[0]);
+      }
+    }
+
+    public Type[] getUpperBounds() {
+      return new Type[] { upperBound };
+    }
+
+    public Type[] getLowerBounds() {
+      return lowerBound != null ? new Type[] { lowerBound } : EMPTY_TYPE_ARRAY;
+    }
+
+    @Override public boolean equals(Object other) {
+      return other instanceof WildcardType
+          && $Gson$Types.equals(this, (WildcardType) other);
+    }
+
+    @Override public int hashCode() {
+      // this equals Arrays.hashCode(getLowerBounds()) ^ Arrays.hashCode(getUpperBounds());
+      return (lowerBound != null ? 31 + lowerBound.hashCode() : 1)
+          ^ (31 + upperBound.hashCode());
+    }
+
+    @Override public String toString() {
+      if (lowerBound != null) {
+        return "? super " + typeToString(lowerBound);
+      } else if (upperBound == Object.class) {
+        return "?";
+      } else {
+        return "? extends " + typeToString(upperBound);
+      }
+    }
+
+    private static final long serialVersionUID = 0;
+  }
+}

src/com/google/gson/internal/ConstructorConstructor.java

@@ -0,0 +1,176 @@
+/*
+ * Copyright (C) 2011 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson.internal;
+
+import com.google.gson.InstanceCreator;
+import com.google.gson.reflect.TypeToken;
+import java.lang.reflect.Constructor;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Type;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.LinkedHashMap;
+import java.util.LinkedHashSet;
+import java.util.LinkedList;
+import java.util.Map;
+import java.util.Queue;
+import java.util.Set;
+import java.util.SortedSet;
+import java.util.TreeSet;
+
+/**
+ * Returns a function that can construct an instance of a requested type.
+ */
+public final class ConstructorConstructor {
+  private final Map<Type, InstanceCreator<?>> instanceCreators;
+
+  public ConstructorConstructor(Map<Type, InstanceCreator<?>> instanceCreators) {
+    this.instanceCreators = instanceCreators;
+  }
+
+  public ConstructorConstructor() {
+    this(Collections.<Type, InstanceCreator<?>>emptyMap());
+  }
+
+  public <T> ObjectConstructor<T> getConstructor(TypeToken<T> typeToken) {
+    final Type type = typeToken.getType();
+    final Class<? super T> rawType = typeToken.getRawType();
+
+    // first try an instance creator
+
+    @SuppressWarnings("unchecked") // types must agree
+    final InstanceCreator<T> creator = (InstanceCreator<T>) instanceCreators.get(type);
+    if (creator != null) {
+      return new ObjectConstructor<T>() {
+        public T construct() {
+          return creator.createInstance(type);
+        }
+      };
+    }
+
+    ObjectConstructor<T> defaultConstructor = newDefaultConstructor(rawType);
+    if (defaultConstructor != null) {
+      return defaultConstructor;
+    }
+
+    ObjectConstructor<T> defaultImplementation = newDefaultImplementationConstructor(rawType);
+    if (defaultImplementation != null) {
+      return defaultImplementation;
+    }
+
+    // finally try unsafe
+    return newUnsafeAllocator(type, rawType);
+  }
+
+  private <T> ObjectConstructor<T> newDefaultConstructor(Class<? super T> rawType) {
+    try {
+      final Constructor<? super T> constructor = rawType.getDeclaredConstructor();
+      if (!constructor.isAccessible()) {
+        constructor.setAccessible(true);
+      }
+      return new ObjectConstructor<T>() {
+        @SuppressWarnings("unchecked") // T is the same raw type as is requested
+        public T construct() {
+          try {
+            Object[] args = null;
+            return (T) constructor.newInstance(args);
+          } catch (InstantiationException e) {
+            // TODO: JsonParseException ?
+            throw new RuntimeException("Failed to invoke " + constructor + " with no args", e);
+          } catch (InvocationTargetException e) {
+            // TODO: don't wrap if cause is unchecked!
+            // TODO: JsonParseException ?
+            throw new RuntimeException("Failed to invoke " + constructor + " with no args",
+                e.getTargetException());
+          } catch (IllegalAccessException e) {
+            throw new AssertionError(e);
+          }
+        }
+      };
+    } catch (NoSuchMethodException e) {
+      return null;
+    }
+  }
+
+  /**
+   * Constructors for common interface types like Map and List and their
+   * subytpes.
+   */
+  @SuppressWarnings("unchecked") // use runtime checks to guarantee that 'T' is what it is
+  private <T> ObjectConstructor<T> newDefaultImplementationConstructor(Class<? super T> rawType) {
+    if (Collection.class.isAssignableFrom(rawType)) {
+      if (SortedSet.class.isAssignableFrom(rawType)) {
+        return new ObjectConstructor<T>() {
+          public T construct() {
+            return (T) new TreeSet<Object>();
+          }
+        };
+      } else if (Set.class.isAssignableFrom(rawType)) {
+        return new ObjectConstructor<T>() {
+          public T construct() {
+            return (T) new LinkedHashSet<Object>();
+          }
+        };
+      } else if (Queue.class.isAssignableFrom(rawType)) {
+        return new ObjectConstructor<T>() {
+          public T construct() {
+            return (T) new LinkedList<Object>();
+          }
+        };
+      } else {
+        return new ObjectConstructor<T>() {
+          public T construct() {
+            return (T) new ArrayList<Object>();
+          }
+        };
+      }
+    }
+
+    if (Map.class.isAssignableFrom(rawType)) {
+      return new ObjectConstructor<T>() {
+        public T construct() {
+          return (T) new LinkedHashMap<Object, Object>();
+        }
+      };
+      // TODO: SortedMap ?
+    }
+
+    return null;
+  }
+
+  private <T> ObjectConstructor<T> newUnsafeAllocator(
+      final Type type, final Class<? super T> rawType) {
+    return new ObjectConstructor<T>() {
+      private final UnsafeAllocator unsafeAllocator = UnsafeAllocator.create();
+      @SuppressWarnings("unchecked")
+      public T construct() {
+        try {
+          Object newInstance = unsafeAllocator.newInstance(rawType);
+          return (T) newInstance;
+        } catch (Exception e) {
+          throw new RuntimeException(("Unable to invoke no-args constructor for " + type + ". "
+              + "Register an InstanceCreator with Gson for this type may fix this problem."), e);
+        }
+      }
+    };
+  }
+
+  @Override public String toString() {
+    return instanceCreators.toString();
+  }
+}

src/com/google/gson/internal/Excluder.java

@@ -0,0 +1,251 @@
+/*
+ * Copyright (C) 2008 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson.internal;
+
+import com.google.gson.ExclusionStrategy;
+import com.google.gson.FieldAttributes;
+import com.google.gson.Gson;
+import com.google.gson.TypeAdapter;
+import com.google.gson.TypeAdapterFactory;
+import com.google.gson.annotations.Expose;
+import com.google.gson.annotations.Since;
+import com.google.gson.annotations.Until;
+import com.google.gson.reflect.TypeToken;
+import com.google.gson.stream.JsonReader;
+import com.google.gson.stream.JsonWriter;
+import java.io.IOException;
+import java.lang.reflect.Field;
+import java.lang.reflect.Modifier;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+/**
+ * This class selects which fields and types to omit. It is configurable,
+ * supporting version attributes {@link Since} and {@link Until}, modifiers,
+ * synthetic fields, anonymous and local classes, inner classes, and fields with
+ * the {@link Expose} annotation.
+ *
+ * <p>This class is a type adapter factory; types that are excluded will be
+ * adapted to null. It may delegate to another type adapter if only one
+ * direction is excluded.
+ *
+ * @author Joel Leitch
+ * @author Jesse Wilson
+ */
+public final class Excluder implements TypeAdapterFactory, Cloneable {
+  private static final double IGNORE_VERSIONS = -1.0d;
+  public static final Excluder DEFAULT = new Excluder();
+
+  private double version = IGNORE_VERSIONS;
+  private int modifiers = Modifier.TRANSIENT | Modifier.STATIC;
+  private boolean serializeInnerClasses = true;
+  private boolean requireExpose;
+  private List<ExclusionStrategy> serializationStrategies = Collections.emptyList();
+  private List<ExclusionStrategy> deserializationStrategies = Collections.emptyList();
+
+  @Override protected Excluder clone() {
+    try {
+      return (Excluder) super.clone();
+    } catch (CloneNotSupportedException e) {
+      throw new AssertionError();
+    }
+  }
+
+  public Excluder withVersion(double ignoreVersionsAfter) {
+    Excluder result = clone();
+    result.version = ignoreVersionsAfter;
+    return result;
+  }
+
+  public Excluder withModifiers(int... modifiers) {
+    Excluder result = clone();
+    result.modifiers = 0;
+    for (int modifier : modifiers) {
+      result.modifiers |= modifier;
+    }
+    return result;
+  }
+
+  public Excluder disableInnerClassSerialization() {
+    Excluder result = clone();
+    result.serializeInnerClasses = false;
+    return result;
+  }
+
+  public Excluder excludeFieldsWithoutExposeAnnotation() {
+    Excluder result = clone();
+    result.requireExpose = true;
+    return result;
+  }
+
+  public Excluder withExclusionStrategy(ExclusionStrategy exclusionStrategy,
+      boolean serialization, boolean deserialization) {
+    Excluder result = clone();
+    if (serialization) {
+      result.serializationStrategies = new ArrayList<ExclusionStrategy>(serializationStrategies);
+      result.serializationStrategies.add(exclusionStrategy);
+    }
+    if (deserialization) {
+      result.deserializationStrategies
+          = new ArrayList<ExclusionStrategy>(deserializationStrategies);
+      result.deserializationStrategies.add(exclusionStrategy);
+    }
+    return result;
+  }
+
+  public <T> TypeAdapter<T> create(final Gson gson, final TypeToken<T> type) {
+    Class<?> rawType = type.getRawType();
+    final boolean skipSerialize = excludeClass(rawType, true);
+    final boolean skipDeserialize = excludeClass(rawType, false);
+
+    if (!skipSerialize && !skipDeserialize) {
+      return null;
+    }
+
+    return new TypeAdapter<T>() {
+      /** The delegate is lazily created because it may not be needed, and creating it may fail. */
+      private TypeAdapter<T> delegate;
+
+      @Override public T read(JsonReader in) throws IOException {
+        if (skipDeserialize) {
+          in.skipValue();
+          return null;
+        }
+        return delegate().read(in);
+      }
+
+      @Override public void write(JsonWriter out, T value) throws IOException {
+        if (skipSerialize) {
+          out.nullValue();
+          return;
+        }
+        delegate().write(out, value);
+      }
+
+      private TypeAdapter<T> delegate() {
+        TypeAdapter<T> d = delegate;
+        return d != null
+            ? d
+            : (delegate = GsonInternalAccess.INSTANCE.getNextAdapter(gson, Excluder.this, type));
+      }
+    };
+  }
+
+  public boolean excludeField(Field field, boolean serialize) {
+    if ((modifiers & field.getModifiers()) != 0) {
+      return true;
+    }
+
+    if (version != Excluder.IGNORE_VERSIONS
+        && !isValidVersion(field.getAnnotation(Since.class), field.getAnnotation(Until.class))) {
+      return true;
+    }
+
+    if (field.isSynthetic()) {
+      return true;
+    }
+
+    if (requireExpose) {
+      Expose annotation = field.getAnnotation(Expose.class);
+      if (annotation == null || (serialize ? !annotation.serialize() : !annotation.deserialize())) {
+        return true;
+      }
+    }
+
+    if (!serializeInnerClasses && isInnerClass(field.getType())) {
+      return true;
+    }
+
+    if (isAnonymousOrLocal(field.getType())) {
+      return true;
+    }
+
+    List<ExclusionStrategy> list = serialize ? serializationStrategies : deserializationStrategies;
+    if (!list.isEmpty()) {
+      FieldAttributes fieldAttributes = new FieldAttributes(field);
+      for (ExclusionStrategy exclusionStrategy : list) {
+        if (exclusionStrategy.shouldSkipField(fieldAttributes)) {
+          return true;
+        }
+      }
+    }
+
+    return false;
+  }
+
+  public boolean excludeClass(Class<?> clazz, boolean serialize) {
+    if (version != Excluder.IGNORE_VERSIONS
+        && !isValidVersion(clazz.getAnnotation(Since.class), clazz.getAnnotation(Until.class))) {
+      return true;
+    }
+
+    if (!serializeInnerClasses && isInnerClass(clazz)) {
+      return true;
+    }
+
+    if (isAnonymousOrLocal(clazz)) {
+      return true;
+    }
+
+    List<ExclusionStrategy> list = serialize ? serializationStrategies : deserializationStrategies;
+    for (ExclusionStrategy exclusionStrategy : list) {
+      if (exclusionStrategy.shouldSkipClass(clazz)) {
+        return true;
+      }
+    }
+
+    return false;
+  }
+
+  private boolean isAnonymousOrLocal(Class<?> clazz) {
+    return !Enum.class.isAssignableFrom(clazz)
+        && (clazz.isAnonymousClass() || clazz.isLocalClass());
+  }
+
+  private boolean isInnerClass(Class<?> clazz) {
+    return clazz.isMemberClass() && !isStatic(clazz);
+  }
+
+  private boolean isStatic(Class<?> clazz) {
+    return (clazz.getModifiers() & Modifier.STATIC) != 0;
+  }
+
+  private boolean isValidVersion(Since since, Until until) {
+    return isValidSince(since) && isValidUntil(until);
+  }
+
+  private boolean isValidSince(Since annotation) {
+    if (annotation != null) {
+      double annotationVersion = annotation.value();
+      if (annotationVersion > version) {
+        return false;
+      }
+    }
+    return true;
+  }
+
+  private boolean isValidUntil(Until annotation) {
+    if (annotation != null) {
+      double annotationVersion = annotation.value();
+      if (annotationVersion <= version) {
+        return false;
+      }
+    }
+    return true;
+  }
+}

src/com/google/gson/internal/GsonInternalAccess.java

@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2011 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson.internal;
+
+import com.google.gson.Gson;
+import com.google.gson.TypeAdapter;
+import com.google.gson.TypeAdapterFactory;
+import com.google.gson.reflect.TypeToken;
+
+/**
+ * Internal-only APIs of Gson available only to other classes in Gson.
+ */
+public abstract class GsonInternalAccess {
+  public static GsonInternalAccess INSTANCE;
+
+  /**
+   * Returns a type adapter for {@code} type that isn't {@code skipPast}. This
+   * can be used for type adapters to compose other, simpler type adapters.
+   *
+   * @throws IllegalArgumentException if this GSON cannot serialize and
+   *     deserialize {@code type}.
+   */
+  public abstract <T> TypeAdapter<T> getNextAdapter(
+      Gson gson, TypeAdapterFactory skipPast, TypeToken<T> type);
+}

src/com/google/gson/internal/JsonReaderInternalAccess.java

@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2011 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson.internal;
+
+import com.google.gson.stream.JsonReader;
+import java.io.IOException;
+
+/**
+ * Internal-only APIs of JsonReader available only to other classes in Gson.
+ */
+public abstract class JsonReaderInternalAccess {
+  public static JsonReaderInternalAccess INSTANCE;
+
+  /**
+   * Changes the type of the current property name token to a string value.
+   */
+  public abstract void promoteNameToValue(JsonReader reader) throws IOException;
+}

src/com/google/gson/internal/LazilyParsedNumber.java

@@ -0,0 +1,69 @@
+/*
+ * Copyright (C) 2011 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.google.gson.internal;
+
+import java.math.BigInteger;
+
+/**
+ * This class holds a number value that is lazily converted to a specific number type
+ *
+ * @author Inderjeet Singh
+ */
+@SuppressWarnings("serial")
+public final class LazilyParsedNumber extends Number {
+  private final String value;
+
+  public LazilyParsedNumber(String value) {
+    this.value = value;
+  }
+
+  @Override
+  public int intValue() {
+    try {
+      return Integer.parseInt(value);
+    } catch (NumberFormatException e) {
+      try {
+        return (int) Long.parseLong(value);
+      } catch (NumberFormatException nfe) {
+        return new BigInteger(value).intValue(); 
+      }
+    }
+  }
+
+  @Override
+  public long longValue() {
+    try {
+      return Long.parseLong(value);
+    } catch (NumberFormatException e) {
+      return new BigInteger(value).longValue(); 
+    }
+  }
+
+  @Override
+  public float floatValue() {
+    return Float.parseFloat(value);
+  }
+
+  @Override
+  public double doubleValue() {
+    return Double.parseDouble(value);
+  }
+
+  @Override
+  public String toString() {
+    return value;
+  }
+}

src/com/google/gson/internal/ObjectConstructor.java

@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2008 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson.internal;
+
+/**
+ * Defines a generic object construction factory.  The purpose of this class
+ * is to construct a default instance of a class that can be used for object
+ * navigation while deserialization from its JSON representation.
+ *
+ * @author Inderjeet Singh
+ * @author Joel Leitch
+ */
+public interface ObjectConstructor<T> {
+
+  /**
+   * Returns a new instance.
+   */
+  public T construct();
+}

src/com/google/gson/internal/Pair.java

@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2009 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson.internal;
+
+/**
+ * A simple object that holds onto a pair of object references, first and second.
+ *
+ * @author Inderjeet Singh
+ * @author Joel Leitch
+ *
+ * @param <FIRST>
+ * @param <SECOND>
+ */
+public final class Pair<FIRST, SECOND> {
+  public final FIRST first;
+  public final SECOND second;
+
+  public Pair(FIRST first, SECOND second) {
+    this.first = first;
+    this.second = second;
+  }
+
+  @Override
+  public int hashCode() {
+    return 17 * ((first != null) ? first.hashCode() : 0)
+        + 17 * ((second != null) ? second.hashCode() : 0);
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (!(o instanceof Pair<?, ?>)) {
+      return false;
+    }
+
+    Pair<?, ?> that = (Pair<?, ?>) o;
+    return equal(this.first, that.first) && equal(this.second, that.second);
+  }
+
+  private static boolean equal(Object a, Object b) {
+    return a == b || (a != null && a.equals(b));
+  }
+
+  @Override
+  public String toString() {
+    return String.format("{%s,%s}", first, second);
+  }
+}

src/com/google/gson/internal/Primitives.java

@@ -0,0 +1,118 @@
+/*
+ * Copyright (C) 2008 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson.internal;
+
+
+import com.google.gson.internal.$Gson$Preconditions;
+import java.lang.reflect.Type;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * Contains static utility methods pertaining to primitive types and their
+ * corresponding wrapper types.
+ *
+ * @author Kevin Bourrillion
+ */
+public final class Primitives {
+  private Primitives() {}
+
+  /** A map from primitive types to their corresponding wrapper types. */
+  private static final Map<Class<?>, Class<?>> PRIMITIVE_TO_WRAPPER_TYPE;
+
+  /** A map from wrapper types to their corresponding primitive types. */
+  private static final Map<Class<?>, Class<?>> WRAPPER_TO_PRIMITIVE_TYPE;
+
+  // Sad that we can't use a BiMap. :(
+
+  static {
+    Map<Class<?>, Class<?>> primToWrap = new HashMap<Class<?>, Class<?>>(16);
+    Map<Class<?>, Class<?>> wrapToPrim = new HashMap<Class<?>, Class<?>>(16);
+
+    add(primToWrap, wrapToPrim, boolean.class, Boolean.class);
+    add(primToWrap, wrapToPrim, byte.class, Byte.class);
+    add(primToWrap, wrapToPrim, char.class, Character.class);
+    add(primToWrap, wrapToPrim, double.class, Double.class);
+    add(primToWrap, wrapToPrim, float.class, Float.class);
+    add(primToWrap, wrapToPrim, int.class, Integer.class);
+    add(primToWrap, wrapToPrim, long.class, Long.class);
+    add(primToWrap, wrapToPrim, short.class, Short.class);
+    add(primToWrap, wrapToPrim, void.class, Void.class);
+
+    PRIMITIVE_TO_WRAPPER_TYPE = Collections.unmodifiableMap(primToWrap);
+    WRAPPER_TO_PRIMITIVE_TYPE = Collections.unmodifiableMap(wrapToPrim);
+  }
+
+  private static void add(Map<Class<?>, Class<?>> forward,
+      Map<Class<?>, Class<?>> backward, Class<?> key, Class<?> value) {
+    forward.put(key, value);
+    backward.put(value, key);
+  }
+
+  /**
+   * Returns true if this type is a primitive.
+   */
+  public static boolean isPrimitive(Type type) {
+    return PRIMITIVE_TO_WRAPPER_TYPE.containsKey(type);
+  }
+
+  /**
+   * Returns {@code true} if {@code type} is one of the nine
+   * primitive-wrapper types, such as {@link Integer}.
+   *
+   * @see Class#isPrimitive
+   */
+  public static boolean isWrapperType(Type type) {
+    return WRAPPER_TO_PRIMITIVE_TYPE.containsKey(
+        $Gson$Preconditions.checkNotNull(type));
+  }
+
+  /**
+   * Returns the corresponding wrapper type of {@code type} if it is a primitive
+   * type; otherwise returns {@code type} itself. Idempotent.
+   * <pre>
+   *     wrap(int.class) == Integer.class
+   *     wrap(Integer.class) == Integer.class
+   *     wrap(String.class) == String.class
+   * </pre>
+   */
+  public static <T> Class<T> wrap(Class<T> type) {
+    // cast is safe: long.class and Long.class are both of type Class<Long>
+    @SuppressWarnings("unchecked")
+    Class<T> wrapped = (Class<T>) PRIMITIVE_TO_WRAPPER_TYPE.get(
+        $Gson$Preconditions.checkNotNull(type));
+    return (wrapped == null) ? type : wrapped;
+  }
+
+  /**
+   * Returns the corresponding primitive type of {@code type} if it is a
+   * wrapper type; otherwise returns {@code type} itself. Idempotent.
+   * <pre>
+   *     unwrap(Integer.class) == int.class
+   *     unwrap(int.class) == int.class
+   *     unwrap(String.class) == String.class
+   * </pre>
+   */
+  public static <T> Class<T> unwrap(Class<T> type) {
+    // cast is safe: long.class and Long.class are both of type Class<Long>
+    @SuppressWarnings("unchecked")
+    Class<T> unwrapped = (Class<T>) WRAPPER_TO_PRIMITIVE_TYPE.get(
+        $Gson$Preconditions.checkNotNull(type));
+    return (unwrapped == null) ? type : unwrapped;
+  }
+}

src/com/google/gson/internal/Streams.java

@@ -0,0 +1,115 @@
+/*
+ * Copyright (C) 2010 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson.internal;
+
+import com.google.gson.JsonElement;
+import com.google.gson.JsonIOException;
+import com.google.gson.JsonNull;
+import com.google.gson.JsonParseException;
+import com.google.gson.JsonSyntaxException;
+import com.google.gson.internal.bind.TypeAdapters;
+import com.google.gson.stream.JsonReader;
+import com.google.gson.stream.JsonWriter;
+import com.google.gson.stream.MalformedJsonException;
+import java.io.EOFException;
+import java.io.IOException;
+import java.io.Writer;
+
+/**
+ * Reads and writes GSON parse trees over streams.
+ */
+public final class Streams {
+  /**
+   * Takes a reader in any state and returns the next value as a JsonElement.
+   */
+  public static JsonElement parse(JsonReader reader) throws JsonParseException {
+    boolean isEmpty = true;
+    try {
+      reader.peek();
+      isEmpty = false;
+      return TypeAdapters.JSON_ELEMENT.read(reader);
+    } catch (EOFException e) {
+      /*
+       * For compatibility with JSON 1.5 and earlier, we return a JsonNull for
+       * empty documents instead of throwing.
+       */
+      if (isEmpty) {
+        return JsonNull.INSTANCE;
+      }
+      throw new JsonIOException(e);
+    } catch (MalformedJsonException e) {
+      throw new JsonSyntaxException(e);
+    } catch (IOException e) {
+      throw new JsonIOException(e);
+    } catch (NumberFormatException e) {
+      throw new JsonSyntaxException(e);
+    }
+  }
+
+  /**
+   * Writes the JSON element to the writer, recursively.
+   */
+  public static void write(JsonElement element, JsonWriter writer) throws IOException {
+    TypeAdapters.JSON_ELEMENT.write(writer, element);
+  }
+
+  public static Writer writerForAppendable(Appendable appendable) {
+    return appendable instanceof Writer ? (Writer) appendable : new AppendableWriter(appendable);
+  }
+
+  /**
+   * Adapts an {@link Appendable} so it can be passed anywhere a {@link Writer}
+   * is used.
+   */
+  private static class AppendableWriter extends Writer {
+    private final Appendable appendable;
+    private final CurrentWrite currentWrite = new CurrentWrite();
+
+    private AppendableWriter(Appendable appendable) {
+      this.appendable = appendable;
+    }
+
+    @Override public void write(char[] chars, int offset, int length) throws IOException {
+      currentWrite.chars = chars;
+      appendable.append(currentWrite, offset, offset + length);
+    }
+
+    @Override public void write(int i) throws IOException {
+      appendable.append((char) i);
+    }
+
+    @Override public void flush() {}
+    @Override public void close() {}
+
+    /**
+     * A mutable char sequence pointing at a single char[].
+     */
+    static class CurrentWrite implements CharSequence {
+      char[] chars;
+      public int length() {
+        return chars.length;
+      }
+      public char charAt(int i) {
+        return chars[i];
+      }
+      public CharSequence subSequence(int start, int end) {
+        return new String(chars, start, end - start);
+      }
+    }
+  }
+
+}

src/com/google/gson/internal/UnsafeAllocator.java

@@ -0,0 +1,104 @@
+/*
+ * Copyright (C) 2011 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson.internal;
+
+import java.io.ObjectInputStream;
+import java.io.ObjectStreamClass;
+import java.lang.reflect.Field;
+import java.lang.reflect.Method;
+
+/**
+ * Do sneaky things to allocate objects without invoking their constructors.
+ *
+ * @author Joel Leitch
+ * @author Jesse Wilson
+ */
+public abstract class UnsafeAllocator {
+  public abstract <T> T newInstance(Class<T> c) throws Exception;
+
+  public static UnsafeAllocator create() {
+    // try JVM
+    // public class Unsafe {
+    //   public Object allocateInstance(Class<?> type);
+    // }
+    try {
+      Class<?> unsafeClass = Class.forName("sun.misc.Unsafe");
+      Field f = unsafeClass.getDeclaredField("theUnsafe");
+      f.setAccessible(true);
+      final Object unsafe = f.get(null);
+      final Method allocateInstance = unsafeClass.getMethod("allocateInstance", Class.class);
+      return new UnsafeAllocator() {
+        @Override
+        @SuppressWarnings("unchecked")
+        public <T> T newInstance(Class<T> c) throws Exception {
+          return (T) allocateInstance.invoke(unsafe, c);
+        }
+      };
+    } catch (Exception ignored) {
+    }
+
+    // try dalvikvm, pre-gingerbread
+    // public class ObjectInputStream {
+    //   private static native Object newInstance(
+    //     Class<?> instantiationClass, Class<?> constructorClass);
+    // }
+    try {
+      final Method newInstance = ObjectInputStream.class
+          .getDeclaredMethod("newInstance", Class.class, Class.class);
+      newInstance.setAccessible(true);
+      return new UnsafeAllocator() {
+        @Override
+        @SuppressWarnings("unchecked")
+        public <T> T newInstance(Class<T> c) throws Exception {
+          return (T) newInstance.invoke(null, c, Object.class);
+        }
+      };
+    } catch (Exception ignored) {
+    }
+
+    // try dalvikvm, post-gingerbread
+    // public class ObjectStreamClass {
+    //   private static native int getConstructorId(Class<?> c);
+    //   private static native Object newInstance(Class<?> instantiationClass, int methodId);
+    // }
+    try {
+      Method getConstructorId = ObjectStreamClass.class
+          .getDeclaredMethod("getConstructorId", Class.class);
+      getConstructorId.setAccessible(true);
+      final int constructorId = (Integer) getConstructorId.invoke(null, Object.class);
+      final Method newInstance = ObjectStreamClass.class
+          .getDeclaredMethod("newInstance", Class.class, int.class);
+      newInstance.setAccessible(true);
+      return new UnsafeAllocator() {
+        @Override
+        @SuppressWarnings("unchecked")
+        public <T> T newInstance(Class<T> c) throws Exception {
+          return (T) newInstance.invoke(null, c, constructorId);
+        }
+      };
+    } catch (Exception ignored) {
+    }
+
+    // give up
+    return new UnsafeAllocator() {
+      @Override
+      public <T> T newInstance(Class<T> c) {
+        throw new UnsupportedOperationException("Cannot allocate " + c);
+      }
+    };
+  }
+}

src/com/google/gson/internal/bind/ArrayTypeAdapter.java

@@ -0,0 +1,97 @@
+/*
+ * Copyright (C) 2011 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson.internal.bind;
+
+import com.google.gson.Gson;
+import com.google.gson.TypeAdapter;
+import com.google.gson.TypeAdapterFactory;
+import java.io.IOException;
+import java.lang.reflect.Array;
+import java.lang.reflect.GenericArrayType;
+import java.lang.reflect.Type;
+import java.util.ArrayList;
+import java.util.List;
+
+import com.google.gson.internal.$Gson$Types;
+import com.google.gson.reflect.TypeToken;
+import com.google.gson.stream.JsonReader;
+import com.google.gson.stream.JsonToken;
+import com.google.gson.stream.JsonWriter;
+
+/**
+ * Adapt an array of objects.
+ */
+public final class ArrayTypeAdapter<E> extends TypeAdapter<Object> {
+  public static final TypeAdapterFactory FACTORY = new TypeAdapterFactory() {
+    @SuppressWarnings({"unchecked", "rawtypes"})
+    public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> typeToken) {
+      Type type = typeToken.getType();
+      if (!(type instanceof GenericArrayType || type instanceof Class && ((Class<?>) type).isArray())) {
+        return null;
+      }
+
+      Type componentType = $Gson$Types.getArrayComponentType(type);
+      TypeAdapter<?> componentTypeAdapter = gson.getAdapter(TypeToken.get(componentType));
+      return new ArrayTypeAdapter(
+              gson, componentTypeAdapter, $Gson$Types.getRawType(componentType));
+    }
+  };
+
+  private final Class<E> componentType;
+  private final TypeAdapter<E> componentTypeAdapter;
+
+  public ArrayTypeAdapter(Gson context, TypeAdapter<E> componentTypeAdapter, Class<E> componentType) {
+    this.componentTypeAdapter =
+      new TypeAdapterRuntimeTypeWrapper<E>(context, componentTypeAdapter, componentType);
+    this.componentType = componentType;
+  }
+
+  public Object read(JsonReader in) throws IOException {
+    if (in.peek() == JsonToken.NULL) {
+      in.nextNull();
+      return null;
+    }
+
+    List<E> list = new ArrayList<E>();
+    in.beginArray();
+    while (in.hasNext()) {
+      E instance = componentTypeAdapter.read(in);
+      list.add(instance);
+    }
+    in.endArray();
+    Object array = Array.newInstance(componentType, list.size());
+    for (int i = 0; i < list.size(); i++) {
+      Array.set(array, i, list.get(i));
+    }
+    return array;
+  }
+
+  @SuppressWarnings("unchecked")
+  @Override public void write(JsonWriter out, Object array) throws IOException {
+    if (array == null) {
+      out.nullValue();
+      return;
+    }
+
+    out.beginArray();
+    for (int i = 0, length = Array.getLength(array); i < length; i++) {
+      E value = (E) Array.get(array, i);
+      componentTypeAdapter.write(out, value);
+    }
+    out.endArray();
+  }
+}

src/com/google/gson/internal/bind/BigDecimalTypeAdapter.java

@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2011 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson.internal.bind;
+
+import com.google.gson.JsonSyntaxException;
+import com.google.gson.TypeAdapter;
+import com.google.gson.stream.JsonReader;
+import com.google.gson.stream.JsonToken;
+import com.google.gson.stream.JsonWriter;
+
+import java.io.IOException;
+import java.math.BigDecimal;
+
+/**
+ * Adapts a BigDecimal type to and from its JSON representation.
+ *
+ * @author Joel Leitch
+ */
+public final class BigDecimalTypeAdapter extends TypeAdapter<BigDecimal> {
+
+  @Override
+  public BigDecimal read(JsonReader in) throws IOException {
+    if (in.peek() == JsonToken.NULL) {
+      in.nextNull();
+      return null;
+    }
+    try {
+      return new BigDecimal(in.nextString());
+    } catch (NumberFormatException e) {
+      throw new JsonSyntaxException(e);
+    }
+  }
+
+  @Override
+  public void write(JsonWriter out, BigDecimal value) throws IOException {
+    out.value(value);
+  }
+}

src/com/google/gson/internal/bind/BigIntegerTypeAdapter.java

@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2011 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson.internal.bind;
+
+import com.google.gson.JsonSyntaxException;
+import com.google.gson.TypeAdapter;
+import com.google.gson.stream.JsonReader;
+import com.google.gson.stream.JsonToken;
+import com.google.gson.stream.JsonWriter;
+import java.io.IOException;
+import java.math.BigInteger;
+
+/**
+ * Adapts a BigInteger type to and from its JSON representation.
+ *
+ * @author Joel Leitch
+ */
+public final class BigIntegerTypeAdapter extends TypeAdapter<BigInteger> {
+
+  @Override
+  public BigInteger read(JsonReader in) throws IOException {
+    if (in.peek() == JsonToken.NULL) {
+      in.nextNull();
+      return null;
+    }
+    try {
+      return new BigInteger(in.nextString());
+    } catch (NumberFormatException e) {
+      throw new JsonSyntaxException(e);
+    }
+  }
+
+  @Override
+  public void write(JsonWriter out, BigInteger value) throws IOException {
+    out.value(value);
+  }
+}

src/com/google/gson/internal/bind/CollectionTypeAdapterFactory.java

@@ -0,0 +1,101 @@
+/*
+ * Copyright (C) 2011 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson.internal.bind;
+
+import com.google.gson.Gson;
+import com.google.gson.TypeAdapter;
+import com.google.gson.TypeAdapterFactory;
+import com.google.gson.internal.$Gson$Types;
+import com.google.gson.internal.ConstructorConstructor;
+import com.google.gson.internal.ObjectConstructor;
+import com.google.gson.reflect.TypeToken;
+import com.google.gson.stream.JsonReader;
+import com.google.gson.stream.JsonToken;
+import com.google.gson.stream.JsonWriter;
+import java.io.IOException;
+import java.lang.reflect.Type;
+import java.util.Collection;
+
+/**
+ * Adapt a homogeneous collection of objects.
+ */
+public final class CollectionTypeAdapterFactory implements TypeAdapterFactory {
+  private final ConstructorConstructor constructorConstructor;
+
+  public CollectionTypeAdapterFactory(ConstructorConstructor constructorConstructor) {
+    this.constructorConstructor = constructorConstructor;
+  }
+
+  public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> typeToken) {
+    Type type = typeToken.getType();
+
+    Class<? super T> rawType = typeToken.getRawType();
+    if (!Collection.class.isAssignableFrom(rawType)) {
+      return null;
+    }
+
+    Type elementType = $Gson$Types.getCollectionElementType(type, rawType);
+    TypeAdapter<?> elementTypeAdapter = gson.getAdapter(TypeToken.get(elementType));
+    ObjectConstructor<T> constructor = constructorConstructor.getConstructor(typeToken);
+
+    @SuppressWarnings({"unchecked", "rawtypes"}) // create() doesn't define a type parameter
+    TypeAdapter<T> result = new Adapter(gson, elementType, elementTypeAdapter, constructor);
+    return result;
+  }
+
+  private final class Adapter<E> extends TypeAdapter<Collection<E>> {
+    private final TypeAdapter<E> elementTypeAdapter;
+    private final ObjectConstructor<? extends Collection<E>> constructor;
+
+    public Adapter(Gson context, Type elementType,
+        TypeAdapter<E> elementTypeAdapter,
+        ObjectConstructor<? extends Collection<E>> constructor) {
+      this.elementTypeAdapter =
+          new TypeAdapterRuntimeTypeWrapper<E>(context, elementTypeAdapter, elementType);
+      this.constructor = constructor;
+    }
+
+    public Collection<E> read(JsonReader in) throws IOException {
+      if (in.peek() == JsonToken.NULL) {
+        in.nextNull();
+        return null;
+      }
+
+      Collection<E> collection = constructor.construct();
+      in.beginArray();
+      while (in.hasNext()) {
+        E instance = elementTypeAdapter.read(in);
+        collection.add(instance);
+      }
+      in.endArray();
+      return collection;
+    }
+
+    public void write(JsonWriter out, Collection<E> collection) throws IOException {
+      if (collection == null) {
+        out.nullValue(); // TODO: better policy here?
+        return;
+      }
+
+      out.beginArray();
+      for (E element : collection) {
+        elementTypeAdapter.write(out, element);
+      }
+      out.endArray();
+    }
+  }
+}

src/com/google/gson/internal/bind/DateTypeAdapter.java

@@ -0,0 +1,93 @@
+/*
+ * Copyright (C) 2011 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson.internal.bind;
+
+import com.google.gson.Gson;
+import com.google.gson.JsonSyntaxException;
+import com.google.gson.TypeAdapter;
+import com.google.gson.TypeAdapterFactory;
+import com.google.gson.reflect.TypeToken;
+import com.google.gson.stream.JsonReader;
+import com.google.gson.stream.JsonToken;
+import com.google.gson.stream.JsonWriter;
+import java.io.IOException;
+import java.text.DateFormat;
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+import java.util.Locale;
+import java.util.TimeZone;
+
+/**
+ * Adapter for Date. Although this class appears stateless, it is not.
+ * DateFormat captures its time zone and locale when it is created, which gives
+ * this class state. DateFormat isn't thread safe either, so this class has
+ * to synchronize its read and write methods.
+ */
+public final class DateTypeAdapter extends TypeAdapter<Date> {
+  public static final TypeAdapterFactory FACTORY = new TypeAdapterFactory() {
+    @SuppressWarnings("unchecked") // we use a runtime check to make sure the 'T's equal
+    public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> typeToken) {
+      return typeToken.getRawType() == Date.class ? (TypeAdapter<T>) new DateTypeAdapter() : null;
+    }
+  };
+
+  private final DateFormat enUsFormat
+      = DateFormat.getDateTimeInstance(DateFormat.DEFAULT, DateFormat.DEFAULT, Locale.US);
+  private final DateFormat localFormat
+      = DateFormat.getDateTimeInstance(DateFormat.DEFAULT, DateFormat.DEFAULT);
+  private final DateFormat iso8601Format = buildIso8601Format();
+
+  private static DateFormat buildIso8601Format() {
+    DateFormat iso8601Format = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'", Locale.US);
+    iso8601Format.setTimeZone(TimeZone.getTimeZone("UTC"));
+    return iso8601Format;
+  }
+
+  @Override public Date read(JsonReader in) throws IOException {
+    if (in.peek() == JsonToken.NULL) {
+      in.nextNull();
+      return null;
+    }
+    return deserializeToDate(in.nextString());
+  }
+
+  private synchronized Date deserializeToDate(String json) {
+    try {
+      return localFormat.parse(json);
+    } catch (ParseException ignored) {
+    }
+    try {
+      return enUsFormat.parse(json);
+    } catch (ParseException ignored) {
+    }
+    try {
+      return iso8601Format.parse(json);
+    } catch (ParseException e) {
+      throw new JsonSyntaxException(json, e);
+    }
+  }
+
+  @Override public synchronized void write(JsonWriter out, Date value) throws IOException {
+    if (value == null) {
+      out.nullValue();
+      return;
+    }
+    String dateFormatAsString = enUsFormat.format(value);
+    out.value(dateFormatAsString);
+  }
+}

src/com/google/gson/internal/bind/JsonTreeReader.java

@@ -0,0 +1,226 @@
+/*
+ * Copyright (C) 2011 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson.internal.bind;
+
+import com.google.gson.JsonArray;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonNull;
+import com.google.gson.JsonObject;
+import com.google.gson.JsonPrimitive;
+import com.google.gson.stream.JsonReader;
+import com.google.gson.stream.JsonToken;
+import java.io.IOException;
+import java.io.Reader;
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * This reader walks the elements of a JsonElement as if it was coming from a
+ * character stream.
+ *
+ * @author Jesse Wilson
+ */
+public final class JsonTreeReader extends JsonReader {
+  private static final Reader UNREADABLE_READER = new Reader() {
+    @Override public int read(char[] buffer, int offset, int count) throws IOException {
+      throw new AssertionError();
+    }
+    @Override public void close() throws IOException {
+      throw new AssertionError();
+    }
+  };
+  private static final Object SENTINEL_CLOSED = new Object();
+
+  private final List<Object> stack = new ArrayList<Object>();
+
+  public JsonTreeReader(JsonElement element) {
+    super(UNREADABLE_READER);
+    stack.add(element);
+  }
+
+  @Override public void beginArray() throws IOException {
+    expect(JsonToken.BEGIN_ARRAY);
+    JsonArray array = (JsonArray) peekStack();
+    stack.add(array.iterator());
+  }
+
+  @Override public void endArray() throws IOException {
+    expect(JsonToken.END_ARRAY);
+    popStack(); // empty iterator
+    popStack(); // array
+  }
+
+  @Override public void beginObject() throws IOException {
+    expect(JsonToken.BEGIN_OBJECT);
+    JsonObject object = (JsonObject) peekStack();
+    stack.add(object.entrySet().iterator());
+  }
+
+  @Override public void endObject() throws IOException {
+    expect(JsonToken.END_OBJECT);
+    popStack(); // empty iterator
+    popStack(); // object
+  }
+
+  @Override public boolean hasNext() throws IOException {
+    JsonToken token = peek();
+    return token != JsonToken.END_OBJECT && token != JsonToken.END_ARRAY;
+  }
+
+  @Override public JsonToken peek() throws IOException {
+    if (stack.isEmpty()) {
+      return JsonToken.END_DOCUMENT;
+    }
+
+    Object o = peekStack();
+    if (o instanceof Iterator) {
+      boolean isObject = stack.get(stack.size() - 2) instanceof JsonObject;
+      Iterator<?> iterator = (Iterator<?>) o;
+      if (iterator.hasNext()) {
+        if (isObject) {
+          return JsonToken.NAME;
+        } else {
+          stack.add(iterator.next());
+          return peek();
+        }
+      } else {
+        return isObject ? JsonToken.END_OBJECT : JsonToken.END_ARRAY;
+      }
+    } else if (o instanceof JsonObject) {
+      return JsonToken.BEGIN_OBJECT;
+    } else if (o instanceof JsonArray) {
+      return JsonToken.BEGIN_ARRAY;
+    } else if (o instanceof JsonPrimitive) {
+      JsonPrimitive primitive = (JsonPrimitive) o;
+      if (primitive.isString()) {
+        return JsonToken.STRING;
+      } else if (primitive.isBoolean()) {
+        return JsonToken.BOOLEAN;
+      } else if (primitive.isNumber()) {
+        return JsonToken.NUMBER;
+      } else {
+        throw new AssertionError();
+      }
+    } else if (o instanceof JsonNull) {
+      return JsonToken.NULL;
+    } else if (o == SENTINEL_CLOSED) {
+      throw new IllegalStateException("JsonReader is closed");
+    } else {
+      throw new AssertionError();
+    }
+  }
+
+  private Object peekStack() {
+    return stack.get(stack.size() - 1);
+  }
+
+  private Object popStack() {
+    return stack.remove(stack.size() - 1);
+  }
+
+  private void expect(JsonToken expected) throws IOException {
+    if (peek() != expected) {
+      throw new IllegalStateException("Expected " + expected + " but was " + peek());
+    }
+  }
+
+  @Override public String nextName() throws IOException {
+    expect(JsonToken.NAME);
+    Iterator<?> i = (Iterator<?>) peekStack();
+    Map.Entry<?, ?> entry = (Map.Entry<?, ?>) i.next();
+    stack.add(entry.getValue());
+    return (String) entry.getKey();
+  }
+
+  @Override public String nextString() throws IOException {
+    JsonToken token = peek();
+    if (token != JsonToken.STRING && token != JsonToken.NUMBER) {
+      throw new IllegalStateException("Expected " + JsonToken.STRING + " but was " + token);
+    }
+    return ((JsonPrimitive) popStack()).getAsString();
+  }
+
+  @Override public boolean nextBoolean() throws IOException {
+    expect(JsonToken.BOOLEAN);
+    return ((JsonPrimitive) popStack()).getAsBoolean();
+  }
+
+  @Override public void nextNull() throws IOException {
+    expect(JsonToken.NULL);
+    popStack();
+  }
+
+  @Override public double nextDouble() throws IOException {
+    JsonToken token = peek();
+    if (token != JsonToken.NUMBER && token != JsonToken.STRING) {
+      throw new IllegalStateException("Expected " + JsonToken.NUMBER + " but was " + token);
+    }
+    double result = ((JsonPrimitive) peekStack()).getAsDouble();
+    if (!isLenient() && (Double.isNaN(result) || Double.isInfinite(result))) {
+      throw new NumberFormatException("JSON forbids NaN and infinities: " + result);
+    }
+    popStack();
+    return result;
+  }
+
+  @Override public long nextLong() throws IOException {
+    JsonToken token = peek();
+    if (token != JsonToken.NUMBER && token != JsonToken.STRING) {
+      throw new IllegalStateException("Expected " + JsonToken.NUMBER + " but was " + token);
+    }
+    long result = ((JsonPrimitive) peekStack()).getAsLong();
+    popStack();
+    return result;
+  }
+
+  @Override public int nextInt() throws IOException {
+    JsonToken token = peek();
+    if (token != JsonToken.NUMBER && token != JsonToken.STRING) {
+      throw new IllegalStateException("Expected " + JsonToken.NUMBER + " but was " + token);
+    }
+    int result = ((JsonPrimitive) peekStack()).getAsInt();
+    popStack();
+    return result;
+  }
+
+  @Override public void close() throws IOException {
+    stack.clear();
+    stack.add(SENTINEL_CLOSED);
+  }
+
+  @Override public void skipValue() throws IOException {
+    if (peek() == JsonToken.NAME) {
+      nextName();
+    } else {
+      popStack();
+    }
+  }
+
+  @Override public String toString() {
+    return getClass().getSimpleName();
+  }
+
+  public void promoteNameToValue() throws IOException {
+    expect(JsonToken.NAME);
+    Iterator<?> i = (Iterator<?>) peekStack();
+    Map.Entry<?, ?> entry = (Map.Entry<?, ?>) i.next();
+    stack.add(entry.getValue());
+    stack.add(new JsonPrimitive((String)entry.getKey()));
+  }
+}

src/com/google/gson/internal/bind/JsonTreeWriter.java

@@ -0,0 +1,200 @@
+/*
+ * Copyright (C) 2011 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson.internal.bind;
+
+import com.google.gson.JsonArray;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonNull;
+import com.google.gson.JsonObject;
+import com.google.gson.JsonPrimitive;
+import com.google.gson.stream.JsonWriter;
+import java.io.IOException;
+import java.io.Writer;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * This writer creates a JsonElement.
+ */
+public final class JsonTreeWriter extends JsonWriter {
+  private static final Writer UNWRITABLE_WRITER = new Writer() {
+    @Override public void write(char[] buffer, int offset, int counter) {
+      throw new AssertionError();
+    }
+    @Override public void flush() throws IOException {
+      throw new AssertionError();
+    }
+    @Override public void close() throws IOException {
+      throw new AssertionError();
+    }
+  };
+  /** Added to the top of the stack when this writer is closed to cause following ops to fail. */
+  private static final JsonPrimitive SENTINEL_CLOSED = new JsonPrimitive("closed");
+
+  /** The JsonElements and JsonArrays under modification, outermost to innermost. */
+  private final List<JsonElement> stack = new ArrayList<JsonElement>();
+
+  /** The name for the next JSON object value. If non-null, the top of the stack is a JsonObject. */
+  private String pendingName;
+
+  /** the JSON element constructed by this writer. */
+  private JsonElement product = JsonNull.INSTANCE; // TODO: is this really what we want?;
+
+  public JsonTreeWriter() {
+    super(UNWRITABLE_WRITER);
+  }
+
+  /**
+   * Returns the top level object produced by this writer.
+   */
+  public JsonElement get() {
+    if (!stack.isEmpty()) {
+      throw new IllegalStateException("Expected one JSON element but was " + stack);
+    }
+    return product;
+  }
+
+  private JsonElement peek() {
+    return stack.get(stack.size() - 1);
+  }
+
+  private void put(JsonElement value) {
+    if (pendingName != null) {
+      if (!value.isJsonNull() || getSerializeNulls()) {
+        JsonObject object = (JsonObject) peek();
+        object.add(pendingName, value);
+      }
+      pendingName = null;
+    } else if (stack.isEmpty()) {
+      product = value;
+    } else {
+      JsonElement element = peek();
+      if (element instanceof JsonArray) {
+        ((JsonArray) element).add(value);
+      } else {
+        throw new IllegalStateException();
+      }
+    }
+  }
+
+  @Override public JsonWriter beginArray() throws IOException {
+    JsonArray array = new JsonArray();
+    put(array);
+    stack.add(array);
+    return this;
+  }
+
+  @Override public JsonWriter endArray() throws IOException {
+    if (stack.isEmpty() || pendingName != null) {
+      throw new IllegalStateException();
+    }
+    JsonElement element = peek();
+    if (element instanceof JsonArray) {
+      stack.remove(stack.size() - 1);
+      return this;
+    }
+    throw new IllegalStateException();
+  }
+
+  @Override public JsonWriter beginObject() throws IOException {
+    JsonObject object = new JsonObject();
+    put(object);
+    stack.add(object);
+    return this;
+  }
+
+  @Override public JsonWriter endObject() throws IOException {
+    if (stack.isEmpty() || pendingName != null) {
+      throw new IllegalStateException();
+    }
+    JsonElement element = peek();
+    if (element instanceof JsonObject) {
+      stack.remove(stack.size() - 1);
+      return this;
+    }
+    throw new IllegalStateException();
+  }
+
+  @Override public JsonWriter name(String name) throws IOException {
+    if (stack.isEmpty() || pendingName != null) {
+      throw new IllegalStateException();
+    }
+    JsonElement element = peek();
+    if (element instanceof JsonObject) {
+      pendingName = name;
+      return this;
+    }
+    throw new IllegalStateException();
+  }
+
+  @Override public JsonWriter value(String value) throws IOException {
+    if (value == null) {
+      return nullValue();
+    }
+    put(new JsonPrimitive(value));
+    return this;
+  }
+
+  @Override public JsonWriter nullValue() throws IOException {
+    put(JsonNull.INSTANCE);
+    return this;
+  }
+
+  @Override public JsonWriter value(boolean value) throws IOException {
+    put(new JsonPrimitive(value));
+    return this;
+  }
+
+  @Override public JsonWriter value(double value) throws IOException {
+    if (!isLenient() && (Double.isNaN(value) || Double.isInfinite(value))) {
+      throw new IllegalArgumentException("JSON forbids NaN and infinities: " + value);
+    }
+    put(new JsonPrimitive(value));
+    return this;
+  }
+
+  @Override public JsonWriter value(long value) throws IOException {
+    put(new JsonPrimitive(value));
+    return this;
+  }
+
+  @Override public JsonWriter value(Number value) throws IOException {
+    if (value == null) {
+      return nullValue();
+    }
+
+    if (!isLenient()) {
+      double d = value.doubleValue();
+      if (Double.isNaN(d) || Double.isInfinite(d)) {
+        throw new IllegalArgumentException("JSON forbids NaN and infinities: " + value);
+      }
+    }
+
+    put(new JsonPrimitive(value));
+    return this;
+  }
+
+  @Override public void flush() throws IOException {
+  }
+
+  @Override public void close() throws IOException {
+    if (!stack.isEmpty()) {
+      throw new IOException("Incomplete document");
+    }
+    stack.add(SENTINEL_CLOSED);
+  }
+}

src/com/google/gson/internal/bind/MapTypeAdapterFactory.java

@@ -0,0 +1,277 @@
+/*
+ * Copyright (C) 2011 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson.internal.bind;
+
+import com.google.gson.Gson;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonIOException;
+import com.google.gson.JsonPrimitive;
+import com.google.gson.JsonSyntaxException;
+import com.google.gson.TypeAdapter;
+import com.google.gson.TypeAdapterFactory;
+import com.google.gson.internal.$Gson$Types;
+import com.google.gson.internal.ConstructorConstructor;
+import com.google.gson.internal.JsonReaderInternalAccess;
+import com.google.gson.internal.ObjectConstructor;
+import com.google.gson.internal.Streams;
+import com.google.gson.reflect.TypeToken;
+import com.google.gson.stream.JsonReader;
+import com.google.gson.stream.JsonToken;
+import com.google.gson.stream.JsonWriter;
+import java.io.IOException;
+import java.lang.reflect.Type;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * Adapts maps to either JSON objects or JSON arrays.
+ *
+ * <h3>Maps as JSON objects</h3>
+ * For primitive keys or when complex map key serialization is not enabled, this
+ * converts Java {@link Map Maps} to JSON Objects. This requires that map keys
+ * can be serialized as strings; this is insufficient for some key types. For
+ * example, consider a map whose keys are points on a grid. The default JSON
+ * form encodes reasonably: <pre>   {@code
+ *   Map<Point, String> original = new LinkedHashMap<Point, String>();
+ *   original.put(new Point(5, 6), "a");
+ *   original.put(new Point(8, 8), "b");
+ *   System.out.println(gson.toJson(original, type));
+ * }</pre>
+ * The above code prints this JSON object:<pre>   {@code
+ *   {
+ *     "(5,6)": "a",
+ *     "(8,8)": "b"
+ *   }
+ * }</pre>
+ * But GSON is unable to deserialize this value because the JSON string name is
+ * just the {@link Object#toString() toString()} of the map key. Attempting to
+ * convert the above JSON to an object fails with a parse exception:
+ * <pre>com.google.gson.JsonParseException: Expecting object found: "(5,6)"
+ *   at com.google.gson.JsonObjectDeserializationVisitor.visitFieldUsingCustomHandler
+ *   at com.google.gson.ObjectNavigator.navigateClassFields
+ *   ...</pre>
+ *
+ * <h3>Maps as JSON arrays</h3>
+ * An alternative approach taken by this type adapter when it is required and
+ * complex map key serialization is enabled is to encode maps as arrays of map
+ * entries. Each map entry is a two element array containing a key and a value.
+ * This approach is more flexible because any type can be used as the map's key;
+ * not just strings. But it's also less portable because the receiver of such
+ * JSON must be aware of the map entry convention.
+ *
+ * <p>Register this adapter when you are creating your GSON instance.
+ * <pre>   {@code
+ *   Gson gson = new GsonBuilder()
+ *     .registerTypeAdapter(Map.class, new MapAsArrayTypeAdapter())
+ *     .create();
+ * }</pre>
+ * This will change the structure of the JSON emitted by the code above. Now we
+ * get an array. In this case the arrays elements are map entries:
+ * <pre>   {@code
+ *   [
+ *     [
+ *       {
+ *         "x": 5,
+ *         "y": 6
+ *       },
+ *       "a",
+ *     ],
+ *     [
+ *       {
+ *         "x": 8,
+ *         "y": 8
+ *       },
+ *       "b"
+ *     ]
+ *   ]
+ * }</pre>
+ * This format will serialize and deserialize just fine as long as this adapter
+ * is registered.
+ */
+public final class MapTypeAdapterFactory implements TypeAdapterFactory {
+  private final ConstructorConstructor constructorConstructor;
+  private final boolean complexMapKeySerialization;
+
+  public MapTypeAdapterFactory(ConstructorConstructor constructorConstructor,
+      boolean complexMapKeySerialization) {
+    this.constructorConstructor = constructorConstructor;
+    this.complexMapKeySerialization = complexMapKeySerialization;
+  }
+
+  public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> typeToken) {
+    Type type = typeToken.getType();
+
+    Class<? super T> rawType = typeToken.getRawType();
+    if (!Map.class.isAssignableFrom(rawType)) {
+      return null;
+    }
+
+    Class<?> rawTypeOfSrc = $Gson$Types.getRawType(type);
+    Type[] keyAndValueTypes = $Gson$Types.getMapKeyAndValueTypes(type, rawTypeOfSrc);
+    TypeAdapter<?> keyAdapter = getKeyAdapter(gson, keyAndValueTypes[0]);
+    TypeAdapter<?> valueAdapter = gson.getAdapter(TypeToken.get(keyAndValueTypes[1]));
+    ObjectConstructor<T> constructor = constructorConstructor.getConstructor(typeToken);
+
+    @SuppressWarnings({"unchecked", "rawtypes"})
+    // we don't define a type parameter for the key or value types
+    TypeAdapter<T> result = new Adapter(gson, keyAndValueTypes[0], keyAdapter,
+        keyAndValueTypes[1], valueAdapter, constructor);
+    return result;
+  }
+
+  /**
+   * Returns a type adapter that writes the value as a string.
+   */
+  private TypeAdapter<?> getKeyAdapter(Gson context, Type keyType) {
+    return (keyType == boolean.class || keyType == Boolean.class)
+        ? TypeAdapters.BOOLEAN_AS_STRING
+        : context.getAdapter(TypeToken.get(keyType));
+  }
+
+  private final class Adapter<K, V> extends TypeAdapter<Map<K, V>> {
+    private final TypeAdapter<K> keyTypeAdapter;
+    private final TypeAdapter<V> valueTypeAdapter;
+    private final ObjectConstructor<? extends Map<K, V>> constructor;
+
+    public Adapter(Gson context, Type keyType, TypeAdapter<K> keyTypeAdapter,
+        Type valueType, TypeAdapter<V> valueTypeAdapter,
+        ObjectConstructor<? extends Map<K, V>> constructor) {
+      this.keyTypeAdapter =
+        new TypeAdapterRuntimeTypeWrapper<K>(context, keyTypeAdapter, keyType);
+      this.valueTypeAdapter =
+        new TypeAdapterRuntimeTypeWrapper<V>(context, valueTypeAdapter, valueType);
+      this.constructor = constructor;
+    }
+
+    public Map<K, V> read(JsonReader in) throws IOException {
+      JsonToken peek = in.peek();
+      if (peek == JsonToken.NULL) {
+        in.nextNull();
+        return null;
+      }
+
+      Map<K, V> map = constructor.construct();
+
+      if (peek == JsonToken.BEGIN_ARRAY) {
+        in.beginArray();
+        while (in.hasNext()) {
+          in.beginArray(); // entry array
+          K key = keyTypeAdapter.read(in);
+          V value = valueTypeAdapter.read(in);
+          V replaced = map.put(key, value);
+          if (replaced != null) {
+            throw new JsonSyntaxException("duplicate key: " + key);
+          }
+          in.endArray();
+        }
+        in.endArray();
+      } else {
+        in.beginObject();
+        while (in.hasNext()) {
+          JsonReaderInternalAccess.INSTANCE.promoteNameToValue(in);
+          K key = keyTypeAdapter.read(in);
+          V value = valueTypeAdapter.read(in);
+          V replaced = map.put(key, value);
+          if (replaced != null) {
+            throw new JsonSyntaxException("duplicate key: " + key);
+          }
+        }
+        in.endObject();
+      }
+      return map;
+    }
+
+    public void write(JsonWriter out, Map<K, V> map) throws IOException {
+      if (map == null) {
+        out.nullValue();
+        return;
+      }
+
+      if (!complexMapKeySerialization) {
+        out.beginObject();
+        for (Map.Entry<K, V> entry : map.entrySet()) {
+          out.name(String.valueOf(entry.getKey()));
+          valueTypeAdapter.write(out, entry.getValue());
+        }
+        out.endObject();
+        return;
+      }
+
+      boolean hasComplexKeys = false;
+      List<JsonElement> keys = new ArrayList<JsonElement>(map.size());
+
+      List<V> values = new ArrayList<V>(map.size());
+      for (Map.Entry<K, V> entry : map.entrySet()) {
+        JsonElement keyElement = toJsonTree(keyTypeAdapter, entry.getKey());
+        keys.add(keyElement);
+        values.add(entry.getValue());
+        hasComplexKeys |= keyElement.isJsonArray() || keyElement.isJsonObject();
+      }
+
+      if (hasComplexKeys) {
+        out.beginArray();
+        for (int i = 0; i < keys.size(); i++) {
+          out.beginArray(); // entry array
+          Streams.write(keys.get(i), out);
+          valueTypeAdapter.write(out, values.get(i));
+          out.endArray();
+        }
+        out.endArray();
+      } else {
+        out.beginObject();
+        for (int i = 0; i < keys.size(); i++) {
+          JsonElement keyElement = keys.get(i);
+          out.name(keyToString(keyElement));
+          valueTypeAdapter.write(out, values.get(i));
+        }
+        out.endObject();
+      }
+    }
+
+    private String keyToString(JsonElement keyElement) {
+      if (keyElement.isJsonPrimitive()) {
+        JsonPrimitive primitive = keyElement.getAsJsonPrimitive();
+        if (primitive.isNumber()) {
+          return String.valueOf(primitive.getAsNumber());
+        } else if (primitive.isBoolean()) {
+          return Boolean.toString(primitive.getAsBoolean());
+        } else if (primitive.isString()) {
+          return primitive.getAsString();
+        } else {
+          throw new AssertionError();
+        }
+      } else if (keyElement.isJsonNull()) {
+        return "null";
+      } else {
+        throw new AssertionError();
+      }
+    }
+  }
+
+  // TODO: remove this when TypeAdapter.toJsonTree() is public
+  private static <T> JsonElement toJsonTree(TypeAdapter<T> typeAdapter, T value) {
+    try {
+      JsonTreeWriter jsonWriter = new JsonTreeWriter();
+      jsonWriter.setLenient(true);
+      typeAdapter.write(jsonWriter, value);
+      return jsonWriter.get();
+    } catch (IOException e) {
+      throw new JsonIOException(e);
+    }
+  }
+}

src/com/google/gson/internal/bind/ObjectTypeAdapter.java

@@ -0,0 +1,107 @@
+/*
+ * Copyright (C) 2011 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson.internal.bind;
+
+import com.google.gson.Gson;
+import com.google.gson.TypeAdapter;
+import com.google.gson.TypeAdapterFactory;
+import com.google.gson.reflect.TypeToken;
+import com.google.gson.stream.JsonReader;
+import com.google.gson.stream.JsonToken;
+import com.google.gson.stream.JsonWriter;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.LinkedHashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * Adapts types whose static type is only 'Object'. Uses getClass() on
+ * serialization and a primitive/Map/List on deserialization.
+ */
+public final class ObjectTypeAdapter extends TypeAdapter<Object> {
+  public static final TypeAdapterFactory FACTORY = new TypeAdapterFactory() {
+    @SuppressWarnings("unchecked")
+    public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> type) {
+      if (type.getRawType() == Object.class) {
+        return (TypeAdapter<T>) new ObjectTypeAdapter(gson);
+      }
+      return null;
+    }
+  };
+
+  private final Gson gson;
+
+  private ObjectTypeAdapter(Gson gson) {
+    this.gson = gson;
+  }
+
+  @Override public Object read(JsonReader in) throws IOException {
+    JsonToken token = in.peek();
+    switch (token) {
+    case BEGIN_ARRAY:
+      List<Object> list = new ArrayList<Object>();
+      in.beginArray();
+      while (in.hasNext()) {
+        list.add(read(in));
+      }
+      in.endArray();
+      return list;
+
+    case BEGIN_OBJECT:
+      Map<String, Object> map = new LinkedHashMap<String, Object>();
+      in.beginObject();
+      while (in.hasNext()) {
+        map.put(in.nextName(), read(in));
+      }
+      in.endObject();
+      return map;
+
+    case STRING:
+      return in.nextString();
+
+    case NUMBER:
+      return in.nextDouble();
+
+    case BOOLEAN:
+      return in.nextBoolean();
+
+    case NULL:
+      in.nextNull();
+      return null;
+
+    }
+    throw new IllegalStateException();
+  }
+
+  @SuppressWarnings("unchecked")
+  @Override public void write(JsonWriter out, Object value) throws IOException {
+    if (value == null) {
+      out.nullValue();
+      return;
+    }
+
+    TypeAdapter<Object> typeAdapter = (TypeAdapter<Object>) gson.getAdapter(value.getClass());
+    if (typeAdapter instanceof ObjectTypeAdapter) {
+      out.beginObject();
+      out.endObject();
+      return;
+    }
+
+    typeAdapter.write(out, value);
+  }
+}

src/com/google/gson/internal/bind/ReflectiveTypeAdapterFactory.java

@@ -0,0 +1,209 @@
+/*
+ * Copyright (C) 2011 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson.internal.bind;
+
+import com.google.gson.FieldNamingStrategy;
+import com.google.gson.Gson;
+import com.google.gson.JsonSyntaxException;
+import com.google.gson.TypeAdapter;
+import com.google.gson.TypeAdapterFactory;
+import com.google.gson.annotations.SerializedName;
+import com.google.gson.internal.$Gson$Types;
+import com.google.gson.internal.ConstructorConstructor;
+import com.google.gson.internal.Excluder;
+import com.google.gson.internal.ObjectConstructor;
+import com.google.gson.internal.Primitives;
+import com.google.gson.reflect.TypeToken;
+import com.google.gson.stream.JsonReader;
+import com.google.gson.stream.JsonToken;
+import com.google.gson.stream.JsonWriter;
+import java.io.IOException;
+import java.lang.reflect.Field;
+import java.lang.reflect.Type;
+import java.util.LinkedHashMap;
+import java.util.Map;
+
+/**
+ * Type adapter that reflects over the fields and methods of a class.
+ */
+public final class ReflectiveTypeAdapterFactory implements TypeAdapterFactory {
+  private final ConstructorConstructor constructorConstructor;
+  private final FieldNamingStrategy fieldNamingPolicy;
+  private final Excluder excluder;
+
+  public ReflectiveTypeAdapterFactory(ConstructorConstructor constructorConstructor,
+      FieldNamingStrategy fieldNamingPolicy, Excluder excluder) {
+    this.constructorConstructor = constructorConstructor;
+    this.fieldNamingPolicy = fieldNamingPolicy;
+    this.excluder = excluder;
+  }
+
+  public boolean excludeField(Field f, boolean serialize) {
+    return !excluder.excludeClass(f.getType(), serialize) && !excluder.excludeField(f, serialize);
+  }
+
+  private String getFieldName(Field f) {
+    SerializedName serializedName = f.getAnnotation(SerializedName.class);
+    return serializedName == null ? fieldNamingPolicy.translateName(f) : serializedName.value();
+  }
+
+  public <T> TypeAdapter<T> create(Gson gson, final TypeToken<T> type) {
+    Class<? super T> raw = type.getRawType();
+
+    if (!Object.class.isAssignableFrom(raw)) {
+      return null; // it's a primitive!
+    }
+
+    ObjectConstructor<T> constructor = constructorConstructor.getConstructor(type);
+    return new Adapter<T>(constructor, getBoundFields(gson, type, raw));
+  }
+
+  private ReflectiveTypeAdapterFactory.BoundField createBoundField(
+      final Gson context, final Field field, final String name,
+      final TypeToken<?> fieldType, boolean serialize, boolean deserialize) {
+    final boolean isPrimitive = Primitives.isPrimitive(fieldType.getRawType());
+
+    // special casing primitives here saves ~5% on Android...
+    return new ReflectiveTypeAdapterFactory.BoundField(name, serialize, deserialize) {
+      final TypeAdapter<?> typeAdapter = context.getAdapter(fieldType);
+      @SuppressWarnings({"unchecked", "rawtypes"}) // the type adapter and field type always agree
+      @Override void write(JsonWriter writer, Object value)
+          throws IOException, IllegalAccessException {
+        Object fieldValue = field.get(value);
+        TypeAdapter t =
+          new TypeAdapterRuntimeTypeWrapper(context, this.typeAdapter, fieldType.getType());
+        t.write(writer, fieldValue);
+      }
+      @Override void read(JsonReader reader, Object value)
+          throws IOException, IllegalAccessException {
+        Object fieldValue = typeAdapter.read(reader);
+        if (fieldValue != null || !isPrimitive) {
+          field.set(value, fieldValue);
+        }
+      }
+    };
+  }
+
+  private Map<String, BoundField> getBoundFields(Gson context, TypeToken<?> type, Class<?> raw) {
+    Map<String, BoundField> result = new LinkedHashMap<String, BoundField>();
+    if (raw.isInterface()) {
+      return result;
+    }
+
+    Type declaredType = type.getType();
+    while (raw != Object.class) {
+      Field[] fields = raw.getDeclaredFields();
+      for (Field field : fields) {
+        boolean serialize = excludeField(field, true);
+        boolean deserialize = excludeField(field, false);
+        if (!serialize && !deserialize) {
+          continue;
+        }
+        field.setAccessible(true);
+        Type fieldType = $Gson$Types.resolve(type.getType(), raw, field.getGenericType());
+        BoundField boundField = createBoundField(context, field, getFieldName(field),
+            TypeToken.get(fieldType), serialize, deserialize);
+        BoundField previous = result.put(boundField.name, boundField);
+        if (previous != null) {
+          throw new IllegalArgumentException(declaredType
+              + " declares multiple JSON fields named " + previous.name);
+        }
+      }
+      type = TypeToken.get($Gson$Types.resolve(type.getType(), raw, raw.getGenericSuperclass()));
+      raw = type.getRawType();
+    }
+    return result;
+  }
+
+  static abstract class BoundField {
+    final String name;
+    final boolean serialized;
+    final boolean deserialized;
+
+    protected BoundField(String name, boolean serialized, boolean deserialized) {
+      this.name = name;
+      this.serialized = serialized;
+      this.deserialized = deserialized;
+    }
+
+    abstract void write(JsonWriter writer, Object value) throws IOException, IllegalAccessException;
+    abstract void read(JsonReader reader, Object value) throws IOException, IllegalAccessException;
+  }
+
+  public final class Adapter<T> extends TypeAdapter<T> {
+    private final ObjectConstructor<T> constructor;
+    private final Map<String, BoundField> boundFields;
+
+    private Adapter(ObjectConstructor<T> constructor, Map<String, BoundField> boundFields) {
+      this.constructor = constructor;
+      this.boundFields = boundFields;
+    }
+
+    @Override
+    public T read(JsonReader in) throws IOException {
+      if (in.peek() == JsonToken.NULL) {
+        in.nextNull();
+        return null;
+      }
+
+      T instance = constructor.construct();
+
+      // TODO: null out the other fields?
+
+      try {
+        in.beginObject();
+        while (in.hasNext()) {
+          String name = in.nextName();
+          BoundField field = boundFields.get(name);
+          if (field == null || !field.deserialized) {
+            // TODO: define a better policy
+            in.skipValue();
+          } else {
+            field.read(in, instance);
+          }
+        }
+      } catch (IllegalStateException e) {
+        throw new JsonSyntaxException(e);
+      } catch (IllegalAccessException e) {
+        throw new AssertionError(e);
+      }
+      in.endObject();
+      return instance;
+    }
+
+    @Override
+    public void write(JsonWriter out, T value) throws IOException {
+      if (value == null) {
+        out.nullValue(); // TODO: better policy here?
+        return;
+      }
+
+      out.beginObject();
+      try {
+        for (BoundField boundField : boundFields.values()) {
+          if (boundField.serialized) {
+            out.name(boundField.name);
+            boundField.write(out, value);
+          }
+        }
+      } catch (IllegalAccessException e) {
+        throw new AssertionError();
+      }
+      out.endObject();
+    }
+  }
+}

src/com/google/gson/internal/bind/SqlDateTypeAdapter.java

@@ -0,0 +1,67 @@
+/*
+ * Copyright (C) 2011 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson.internal.bind;
+
+import com.google.gson.Gson;
+import com.google.gson.JsonSyntaxException;
+import com.google.gson.TypeAdapter;
+import com.google.gson.TypeAdapterFactory;
+import com.google.gson.reflect.TypeToken;
+import com.google.gson.stream.JsonReader;
+import com.google.gson.stream.JsonToken;
+import com.google.gson.stream.JsonWriter;
+import java.io.IOException;
+import java.text.DateFormat;
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+
+/**
+ * Adapter for java.sql.Date. Although this class appears stateless, it is not.
+ * DateFormat captures its time zone and locale when it is created, which gives
+ * this class state. DateFormat isn't thread safe either, so this class has
+ * to synchronize its read and write methods.
+ */
+public final class SqlDateTypeAdapter extends TypeAdapter<java.sql.Date> {
+  public static final TypeAdapterFactory FACTORY = new TypeAdapterFactory() {
+    @SuppressWarnings("unchecked") // we use a runtime check to make sure the 'T's equal
+    public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> typeToken) {
+      return typeToken.getRawType() == java.sql.Date.class
+          ? (TypeAdapter<T>) new SqlDateTypeAdapter() : null;
+    }
+  };
+
+  private final DateFormat format = new SimpleDateFormat("MMM d, yyyy");
+
+  @Override
+  public synchronized java.sql.Date read(JsonReader in) throws IOException {
+    if (in.peek() == JsonToken.NULL) {
+      in.nextNull();
+      return null;
+    }
+    try {
+      final long utilDate = format.parse(in.nextString()).getTime();
+      return new java.sql.Date(utilDate);
+    } catch (ParseException e) {
+      throw new JsonSyntaxException(e);
+    }
+  }
+
+  @Override
+  public synchronized void write(JsonWriter out, java.sql.Date value) throws IOException {
+    out.value(value == null ? null : format.format(value));
+  }
+}

src/com/google/gson/internal/bind/TimeTypeAdapter.java

@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2011 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson.internal.bind;
+
+import com.google.gson.Gson;
+import com.google.gson.JsonSyntaxException;
+import com.google.gson.TypeAdapter;
+import com.google.gson.TypeAdapterFactory;
+import com.google.gson.reflect.TypeToken;
+import com.google.gson.stream.JsonReader;
+import com.google.gson.stream.JsonToken;
+import com.google.gson.stream.JsonWriter;
+import java.io.IOException;
+import java.sql.Time;
+import java.text.DateFormat;
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+
+/**
+ * Adapter for Time. Although this class appears stateless, it is not.
+ * DateFormat captures its time zone and locale when it is created, which gives
+ * this class state. DateFormat isn't thread safe either, so this class has
+ * to synchronize its read and write methods.
+ */
+public final class TimeTypeAdapter extends TypeAdapter<Time> {
+  public static final TypeAdapterFactory FACTORY = new TypeAdapterFactory() {
+    @SuppressWarnings("unchecked") // we use a runtime check to make sure the 'T's equal
+    public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> typeToken) {
+      return typeToken.getRawType() == Time.class ? (TypeAdapter<T>) new TimeTypeAdapter() : null;
+    }
+  };
+
+  private final DateFormat format = new SimpleDateFormat("hh:mm:ss a");
+
+  @Override public synchronized Time read(JsonReader in) throws IOException {
+    if (in.peek() == JsonToken.NULL) {
+      in.nextNull();
+      return null;
+    }
+    try {
+      Date date = format.parse(in.nextString());
+      return new Time(date.getTime());
+    } catch (ParseException e) {
+      throw new JsonSyntaxException(e);
+    }
+  }
+
+  @Override public synchronized void write(JsonWriter out, Time value) throws IOException {
+    out.value(value == null ? null : format.format(value));
+  }
+}

src/com/google/gson/internal/bind/TypeAdapterRuntimeTypeWrapper.java

@@ -0,0 +1,81 @@
+/*
+ * Copyright (C) 2011 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.google.gson.internal.bind;
+
+import com.google.gson.Gson;
+import com.google.gson.TypeAdapter;
+import com.google.gson.reflect.TypeToken;
+import com.google.gson.stream.JsonReader;
+import com.google.gson.stream.JsonWriter;
+import java.io.IOException;
+import java.lang.reflect.Type;
+import java.lang.reflect.TypeVariable;
+
+final class TypeAdapterRuntimeTypeWrapper<T> extends TypeAdapter<T> {
+  private final Gson context;
+  private final TypeAdapter<T> delegate;
+  private final Type type;
+
+  TypeAdapterRuntimeTypeWrapper(Gson context, TypeAdapter<T> delegate, Type type) {
+    this.context = context;
+    this.delegate = delegate;
+    this.type = type;
+  }
+
+  @Override
+  public T read(JsonReader in) throws IOException {
+    return delegate.read(in);
+  }
+
+  @SuppressWarnings({"rawtypes", "unchecked"})
+  @Override
+  public void write(JsonWriter out, T value) throws IOException {
+    // Order of preference for choosing type adapters
+    // First preference: a type adapter registered for the runtime type
+    // Second preference: a type adapter registered for the declared type
+    // Third preference: reflective type adapter for the runtime type (if it is a sub class of the declared type)
+    // Fourth preference: reflective type adapter for the declared type
+
+    TypeAdapter chosen = delegate;
+    Type runtimeType = getRuntimeTypeIfMoreSpecific(type, value);
+    if (runtimeType != type) {
+      TypeAdapter runtimeTypeAdapter = context.getAdapter(TypeToken.get(runtimeType));
+      if (!(runtimeTypeAdapter instanceof ReflectiveTypeAdapterFactory.Adapter)) {
+        // The user registered a type adapter for the runtime type, so we will use that
+        chosen = runtimeTypeAdapter;
+      } else if (!(delegate instanceof ReflectiveTypeAdapterFactory.Adapter)) {
+        // The user registered a type adapter for Base class, so we prefer it over the
+        // reflective type adapter for the runtime type
+        chosen = delegate;
+      } else {
+        // Use the type adapter for runtime type
+        chosen = runtimeTypeAdapter;
+      }
+    }
+    chosen.write(out, value);
+  }
+
+  /**
+   * Finds a compatible runtime type if it is more specific
+   */
+  private Type getRuntimeTypeIfMoreSpecific(Type type, Object value) {
+    if (value != null
+        && (type == Object.class || type instanceof TypeVariable<?> || type instanceof Class<?>)) {
+      type = value.getClass();
+    }
+    return type;
+  }
+}

src/com/google/gson/internal/bind/TypeAdapters.java

@@ -0,0 +1,785 @@
+/*
+ * Copyright (C) 2011 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson.internal.bind;
+
+import com.google.gson.TypeAdapterFactory;
+import java.io.IOException;
+import java.net.InetAddress;
+import java.net.URI;
+import java.net.URISyntaxException;
+import java.net.URL;
+import java.sql.Timestamp;
+import java.util.BitSet;
+import java.util.Calendar;
+import java.util.Date;
+import java.util.GregorianCalendar;
+import java.util.HashMap;
+import java.util.Locale;
+import java.util.Map;
+import java.util.StringTokenizer;
+import java.util.UUID;
+
+import com.google.gson.Gson;
+import com.google.gson.JsonArray;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonIOException;
+import com.google.gson.JsonNull;
+import com.google.gson.JsonObject;
+import com.google.gson.JsonPrimitive;
+import com.google.gson.JsonSyntaxException;
+import com.google.gson.TypeAdapter;
+import com.google.gson.annotations.SerializedName;
+import com.google.gson.internal.LazilyParsedNumber;
+import com.google.gson.reflect.TypeToken;
+import com.google.gson.stream.JsonReader;
+import com.google.gson.stream.JsonToken;
+import com.google.gson.stream.JsonWriter;
+
+/**
+ * Type adapters for basic types.
+ */
+public final class TypeAdapters {
+  private TypeAdapters() {}
+
+  @SuppressWarnings("rawtypes")
+  public static final TypeAdapter<Class> CLASS = new TypeAdapter<Class>() {
+	@Override
+	public void write(JsonWriter out, Class value) throws IOException {
+	  throw new UnsupportedOperationException("Attempted to serialize java.lang.Class: "
+	      + value.getName() + ". Forgot to register a type adapter?");
+	}
+	@Override
+	public Class read(JsonReader in) throws IOException {
+      throw new UnsupportedOperationException(
+          "Attempted to deserialize a java.lang.Class. Forgot to register a type adapter?");
+	}
+  };
+  public static final TypeAdapterFactory CLASS_FACTORY = newFactory(Class.class, CLASS);
+
+  public static final TypeAdapter<BitSet> BIT_SET = new TypeAdapter<BitSet>() {
+    public BitSet read(JsonReader in) throws IOException {
+      if (in.peek() == JsonToken.NULL) {
+        in.nextNull();
+        return null;
+      }
+
+      BitSet bitset = new BitSet();
+      in.beginArray();
+      int i = 0;
+      JsonToken tokenType = in.peek();
+      while (tokenType != JsonToken.END_ARRAY) {
+        boolean set;
+        switch (tokenType) {
+        case NUMBER:
+          set = in.nextInt() != 0;
+          break;
+        case BOOLEAN:
+          set = in.nextBoolean();
+          break;
+        case STRING:
+          String stringValue = in.nextString();
+          try {
+            set = Integer.parseInt(stringValue) != 0;
+          } catch (NumberFormatException e) {
+            throw new JsonSyntaxException(
+                "Error: Expecting: bitset number value (1, 0), Found: " + stringValue);
+          }
+          break;
+        default:
+          throw new JsonSyntaxException("Invalid bitset value type: " + tokenType);
+        }
+        if (set) {
+          bitset.set(i);
+        }
+        ++i;
+        tokenType = in.peek();
+      }
+      in.endArray();
+      return bitset;
+    }
+
+    public void write(JsonWriter out, BitSet src) throws IOException {
+      if (src == null) {
+        out.nullValue();
+        return;
+      }
+
+      out.beginArray();
+      for (int i = 0; i < src.length(); i++) {
+        int value = (src.get(i)) ? 1 : 0;
+        out.value(value);
+      }
+      out.endArray();
+    }
+  };
+
+  public static final TypeAdapterFactory BIT_SET_FACTORY = newFactory(BitSet.class, BIT_SET);
+
+  public static final TypeAdapter<Boolean> BOOLEAN = new TypeAdapter<Boolean>() {
+    @Override
+    public Boolean read(JsonReader in) throws IOException {
+      if (in.peek() == JsonToken.NULL) {
+        in.nextNull();
+        return null;
+      } else if (in.peek() == JsonToken.STRING) {
+        // support strings for compatibility with GSON 1.7
+        return Boolean.parseBoolean(in.nextString());
+      }
+      return in.nextBoolean();
+    }
+    @Override
+    public void write(JsonWriter out, Boolean value) throws IOException {
+      if (value == null) {
+        out.nullValue();
+        return;
+      }
+      out.value(value);
+    }
+  };
+
+  /**
+   * Writes a boolean as a string. Useful for map keys, where booleans aren't
+   * otherwise permitted.
+   */
+  public static final TypeAdapter<Boolean> BOOLEAN_AS_STRING = new TypeAdapter<Boolean>() {
+    @Override public Boolean read(JsonReader in) throws IOException {
+      if (in.peek() == JsonToken.NULL) {
+        in.nextNull();
+        return null;
+      }
+      return Boolean.valueOf(in.nextString());
+    }
+
+    @Override public void write(JsonWriter out, Boolean value) throws IOException {
+      out.value(value == null ? "null" : value.toString());
+    }
+  };
+
+  public static final TypeAdapterFactory BOOLEAN_FACTORY
+      = newFactory(boolean.class, Boolean.class, BOOLEAN);
+
+  public static final TypeAdapter<Number> BYTE = new TypeAdapter<Number>() {
+    @Override
+    public Number read(JsonReader in) throws IOException {
+      if (in.peek() == JsonToken.NULL) {
+        in.nextNull();
+        return null;
+      }
+      try {
+        int intValue = in.nextInt();
+        return (byte) intValue;
+      } catch (NumberFormatException e) {
+        throw new JsonSyntaxException(e);
+      }
+    }
+    @Override
+    public void write(JsonWriter out, Number value) throws IOException {
+      out.value(value);
+    }
+  };
+
+  public static final TypeAdapterFactory BYTE_FACTORY
+      = newFactory(byte.class, Byte.class, BYTE);
+
+  public static final TypeAdapter<Number> SHORT = new TypeAdapter<Number>() {
+    @Override
+    public Number read(JsonReader in) throws IOException {
+      if (in.peek() == JsonToken.NULL) {
+        in.nextNull();
+        return null;
+      }
+      try {
+        return (short) in.nextInt();
+      } catch (NumberFormatException e) {
+        throw new JsonSyntaxException(e);
+      }
+    }
+    @Override
+    public void write(JsonWriter out, Number value) throws IOException {
+      out.value(value);
+    }
+  };
+
+  public static final TypeAdapterFactory SHORT_FACTORY
+      = newFactory(short.class, Short.class, SHORT);
+
+  public static final TypeAdapter<Number> INTEGER = new TypeAdapter<Number>() {
+    @Override
+    public Number read(JsonReader in) throws IOException {
+      if (in.peek() == JsonToken.NULL) {
+        in.nextNull();
+        return null;
+      }
+      try {
+        return in.nextInt();
+      } catch (NumberFormatException e) {
+        throw new JsonSyntaxException(e);
+      }
+    }
+    @Override
+    public void write(JsonWriter out, Number value) throws IOException {
+      out.value(value);
+    }
+  };
+
+  public static final TypeAdapterFactory INTEGER_FACTORY
+      = newFactory(int.class, Integer.class, INTEGER);
+
+  public static final TypeAdapter<Number> LONG = new TypeAdapter<Number>() {
+    @Override
+    public Number read(JsonReader in) throws IOException {
+      if (in.peek() == JsonToken.NULL) {
+        in.nextNull();
+        return null;
+      }
+      try {
+        return in.nextLong();
+      } catch (NumberFormatException e) {
+        throw new JsonSyntaxException(e);
+      }
+    }
+    @Override
+    public void write(JsonWriter out, Number value) throws IOException {
+      out.value(value);
+    }
+  };
+
+  public static final TypeAdapter<Number> FLOAT = new TypeAdapter<Number>() {
+    @Override
+    public Number read(JsonReader in) throws IOException {
+      if (in.peek() == JsonToken.NULL) {
+        in.nextNull();
+        return null;
+      }
+      return (float) in.nextDouble();
+    }
+    @Override
+    public void write(JsonWriter out, Number value) throws IOException {
+      out.value(value);
+    }
+  };
+
+  public static final TypeAdapter<Number> DOUBLE = new TypeAdapter<Number>() {
+    @Override
+    public Number read(JsonReader in) throws IOException {
+      if (in.peek() == JsonToken.NULL) {
+        in.nextNull();
+        return null;
+      }
+      return in.nextDouble();
+    }
+    @Override
+    public void write(JsonWriter out, Number value) throws IOException {
+      out.value(value);
+    }
+  };
+
+  public static final TypeAdapter<Number> NUMBER = new TypeAdapter<Number>() {
+    @Override
+    public Number read(JsonReader in) throws IOException {
+      JsonToken jsonToken = in.peek();
+      switch (jsonToken) {
+      case NULL:
+        in.nextNull();
+        return null;
+      case NUMBER:
+        return new LazilyParsedNumber(in.nextString());
+      default:
+        throw new JsonSyntaxException("Expecting number, got: " + jsonToken);
+      }
+    }
+    @Override
+    public void write(JsonWriter out, Number value) throws IOException {
+      out.value(value);
+    }
+  };
+
+  public static final TypeAdapterFactory NUMBER_FACTORY = newFactory(Number.class, NUMBER);
+
+  public static final TypeAdapter<Character> CHARACTER = new TypeAdapter<Character>() {
+    @Override
+    public Character read(JsonReader in) throws IOException {
+      if (in.peek() == JsonToken.NULL) {
+        in.nextNull();
+        return null;
+      }
+      String str = in.nextString();
+      if (str.length() != 1) {
+        throw new JsonSyntaxException("Expecting character, got: " + str);
+      }
+      return str.charAt(0);
+    }
+    @Override
+    public void write(JsonWriter out, Character value) throws IOException {
+      out.value(value == null ? null : String.valueOf(value));
+    }
+  };
+
+  public static final TypeAdapterFactory CHARACTER_FACTORY
+      = newFactory(char.class, Character.class, CHARACTER);
+
+  public static final TypeAdapter<String> STRING = new TypeAdapter<String>() {
+    @Override
+    public String read(JsonReader in) throws IOException {
+      JsonToken peek = in.peek();
+      if (peek == JsonToken.NULL) {
+        in.nextNull();
+        return null;
+      }
+      /* coerce booleans to strings for backwards compatibility */
+      if (peek == JsonToken.BOOLEAN) {
+        return Boolean.toString(in.nextBoolean());
+      }
+      return in.nextString();
+    }
+    @Override
+    public void write(JsonWriter out, String value) throws IOException {
+      out.value(value);
+    }
+  };
+
+  public static final TypeAdapterFactory STRING_FACTORY = newFactory(String.class, STRING);
+
+  public static final TypeAdapter<StringBuilder> STRING_BUILDER = new TypeAdapter<StringBuilder>() {
+    @Override
+    public StringBuilder read(JsonReader in) throws IOException {
+      if (in.peek() == JsonToken.NULL) {
+        in.nextNull();
+        return null;
+      }
+      return new StringBuilder(in.nextString());
+    }
+    @Override
+    public void write(JsonWriter out, StringBuilder value) throws IOException {
+      out.value(value == null ? null : value.toString());
+    }
+  };
+
+  public static final TypeAdapterFactory STRING_BUILDER_FACTORY =
+    newFactory(StringBuilder.class, STRING_BUILDER);
+
+  public static final TypeAdapter<StringBuffer> STRING_BUFFER = new TypeAdapter<StringBuffer>() {
+    @Override
+    public StringBuffer read(JsonReader in) throws IOException {
+      if (in.peek() == JsonToken.NULL) {
+        in.nextNull();
+        return null;
+      }
+      return new StringBuffer(in.nextString());
+    }
+    @Override
+    public void write(JsonWriter out, StringBuffer value) throws IOException {
+      out.value(value == null ? null : value.toString());
+    }
+  };
+
+  public static final TypeAdapterFactory STRING_BUFFER_FACTORY =
+    newFactory(StringBuffer.class, STRING_BUFFER);
+
+  public static final TypeAdapter<URL> URL = new TypeAdapter<URL>() {
+    @Override
+    public URL read(JsonReader in) throws IOException {
+      if (in.peek() == JsonToken.NULL) {
+        in.nextNull();
+        return null;
+      }
+      String nextString = in.nextString();
+      return "null".equals(nextString) ? null : new URL(nextString);
+    }
+    @Override
+    public void write(JsonWriter out, URL value) throws IOException {
+      out.value(value == null ? null : value.toExternalForm());
+    }
+  };
+
+  public static final TypeAdapterFactory URL_FACTORY = newFactory(URL.class, URL);
+
+  public static final TypeAdapter<URI> URI = new TypeAdapter<URI>() {
+    @Override
+    public URI read(JsonReader in) throws IOException {
+      if (in.peek() == JsonToken.NULL) {
+        in.nextNull();
+        return null;
+      }
+      try {
+        String nextString = in.nextString();
+        return "null".equals(nextString) ? null : new URI(nextString);
+      } catch (URISyntaxException e) {
+        throw new JsonIOException(e);
+      }
+    }
+    @Override
+    public void write(JsonWriter out, URI value) throws IOException {
+      out.value(value == null ? null : value.toASCIIString());
+    }
+  };
+
+  public static final TypeAdapterFactory URI_FACTORY = newFactory(URI.class, URI);
+
+  public static final TypeAdapter<InetAddress> INET_ADDRESS = new TypeAdapter<InetAddress>() {
+    @Override
+    public InetAddress read(JsonReader in) throws IOException {
+      if (in.peek() == JsonToken.NULL) {
+        in.nextNull();
+        return null;
+      }
+      // regrettably, this should have included both the host name and the host address
+      return InetAddress.getByName(in.nextString());
+    }
+    @Override
+    public void write(JsonWriter out, InetAddress value) throws IOException {
+      out.value(value == null ? null : value.getHostAddress());
+    }
+  };
+
+  public static final TypeAdapterFactory INET_ADDRESS_FACTORY =
+    newTypeHierarchyFactory(InetAddress.class, INET_ADDRESS);
+
+  public static final TypeAdapter<UUID> UUID = new TypeAdapter<UUID>() {
+    @Override
+    public UUID read(JsonReader in) throws IOException {
+      if (in.peek() == JsonToken.NULL) {
+        in.nextNull();
+        return null;
+      }
+      return java.util.UUID.fromString(in.nextString());
+    }
+    @Override
+    public void write(JsonWriter out, UUID value) throws IOException {
+      out.value(value == null ? null : value.toString());
+    }
+  };
+
+  public static final TypeAdapterFactory UUID_FACTORY = newFactory(UUID.class, UUID);
+
+  public static final TypeAdapterFactory TIMESTAMP_FACTORY = new TypeAdapterFactory() {
+    @SuppressWarnings("unchecked") // we use a runtime check to make sure the 'T's equal
+    public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> typeToken) {
+      if (typeToken.getRawType() != Timestamp.class) {
+        return null;
+      }
+
+      final TypeAdapter<Date> dateTypeAdapter = gson.getAdapter(Date.class);
+      return (TypeAdapter<T>) new TypeAdapter<Timestamp>() {
+        @Override public Timestamp read(JsonReader in) throws IOException {
+          Date date = dateTypeAdapter.read(in);
+          return date != null ? new Timestamp(date.getTime()) : null;
+        }
+
+        @Override public void write(JsonWriter out, Timestamp value) throws IOException {
+          dateTypeAdapter.write(out, value);
+        }
+      };
+    }
+  };
+
+  public static final TypeAdapter<Calendar> CALENDAR = new TypeAdapter<Calendar>() {
+    private static final String YEAR = "year";
+    private static final String MONTH = "month";
+    private static final String DAY_OF_MONTH = "dayOfMonth";
+    private static final String HOUR_OF_DAY = "hourOfDay";
+    private static final String MINUTE = "minute";
+    private static final String SECOND = "second";
+
+    @Override
+    public Calendar read(JsonReader in) throws IOException {
+      if (in.peek() == JsonToken.NULL) {
+        in.nextNull();
+        return  null;
+      }
+      in.beginObject();
+      int year = 0;
+      int month = 0;
+      int dayOfMonth = 0;
+      int hourOfDay = 0;
+      int minute = 0;
+      int second = 0;
+      while (in.peek() != JsonToken.END_OBJECT) {
+        String name = in.nextName();
+        int value = in.nextInt();
+        if (YEAR.equals(name)) {
+          year = value;
+        } else if (MONTH.equals(name)) {
+          month = value;
+        } else if (DAY_OF_MONTH.equals(name)) {
+          dayOfMonth = value;
+        } else if (HOUR_OF_DAY.equals(name)) {
+          hourOfDay = value;
+        } else if (MINUTE.equals(name)) {
+          minute = value;
+        } else if (SECOND.equals(name)) {
+          second = value;
+        }
+      }
+      in.endObject();
+      return new GregorianCalendar(year, month, dayOfMonth, hourOfDay, minute, second);
+    }
+
+    @Override
+    public void write(JsonWriter out, Calendar value) throws IOException {
+      if (value == null) {
+        out.nullValue();
+        return;
+      }
+      out.beginObject();
+      out.name(YEAR);
+      out.value(value.get(Calendar.YEAR));
+      out.name(MONTH);
+      out.value(value.get(Calendar.MONTH));
+      out.name(DAY_OF_MONTH);
+      out.value(value.get(Calendar.DAY_OF_MONTH));
+      out.name(HOUR_OF_DAY);
+      out.value(value.get(Calendar.HOUR_OF_DAY));
+      out.name(MINUTE);
+      out.value(value.get(Calendar.MINUTE));
+      out.name(SECOND);
+      out.value(value.get(Calendar.SECOND));
+      out.endObject();
+    }
+  };
+
+  public static final TypeAdapterFactory CALENDAR_FACTORY =
+    newFactoryForMultipleTypes(Calendar.class, GregorianCalendar.class, CALENDAR);
+
+  public static final TypeAdapter<Locale> LOCALE = new TypeAdapter<Locale>() {
+    @Override
+    public Locale read(JsonReader in) throws IOException {
+      if (in.peek() == JsonToken.NULL) {
+        in.nextNull();
+        return null;
+      }
+      String locale = in.nextString();
+      StringTokenizer tokenizer = new StringTokenizer(locale, "_");
+      String language = null;
+      String country = null;
+      String variant = null;
+      if (tokenizer.hasMoreElements()) {
+        language = tokenizer.nextToken();
+      }
+      if (tokenizer.hasMoreElements()) {
+        country = tokenizer.nextToken();
+      }
+      if (tokenizer.hasMoreElements()) {
+        variant = tokenizer.nextToken();
+      }
+      if (country == null && variant == null) {
+        return new Locale(language);
+      } else if (variant == null) {
+        return new Locale(language, country);
+      } else {
+        return new Locale(language, country, variant);
+      }
+    }
+    @Override
+    public void write(JsonWriter out, Locale value) throws IOException {
+      out.value(value == null ? null : value.toString());
+    }
+  };
+
+  public static final TypeAdapterFactory LOCALE_FACTORY = newFactory(Locale.class, LOCALE);
+
+  public static final TypeAdapter<JsonElement> JSON_ELEMENT = new TypeAdapter<JsonElement>() {
+    @Override public JsonElement read(JsonReader in) throws IOException {
+      switch (in.peek()) {
+      case STRING:
+        return new JsonPrimitive(in.nextString());
+      case NUMBER:
+        String number = in.nextString();
+        return new JsonPrimitive(new LazilyParsedNumber(number));
+      case BOOLEAN:
+        return new JsonPrimitive(in.nextBoolean());
+      case NULL:
+        in.nextNull();
+        return JsonNull.INSTANCE;
+      case BEGIN_ARRAY:
+        JsonArray array = new JsonArray();
+        in.beginArray();
+        while (in.hasNext()) {
+          array.add(read(in));
+        }
+        in.endArray();
+        return array;
+      case BEGIN_OBJECT:
+        JsonObject object = new JsonObject();
+        in.beginObject();
+        while (in.hasNext()) {
+          object.add(in.nextName(), read(in));
+        }
+        in.endObject();
+        return object;
+      case END_DOCUMENT:
+      case NAME:
+      case END_OBJECT:
+      case END_ARRAY:
+      default:
+        throw new IllegalArgumentException();
+      }
+    }
+
+    @Override public void write(JsonWriter out, JsonElement value) throws IOException {
+      if (value == null || value.isJsonNull()) {
+        out.nullValue();
+      } else if (value.isJsonPrimitive()) {
+        JsonPrimitive primitive = value.getAsJsonPrimitive();
+        if (primitive.isNumber()) {
+          out.value(primitive.getAsNumber());
+        } else if (primitive.isBoolean()) {
+          out.value(primitive.getAsBoolean());
+        } else {
+          out.value(primitive.getAsString());
+        }
+
+      } else if (value.isJsonArray()) {
+        out.beginArray();
+        for (JsonElement e : value.getAsJsonArray()) {
+          write(out, e);
+        }
+        out.endArray();
+
+      } else if (value.isJsonObject()) {
+        out.beginObject();
+        for (Map.Entry<String, JsonElement> e : value.getAsJsonObject().entrySet()) {
+          out.name(e.getKey());
+          write(out, e.getValue());
+        }
+        out.endObject();
+
+      } else {
+        throw new IllegalArgumentException("Couldn't write " + value.getClass());
+      }
+    }
+  };
+
+  public static final TypeAdapterFactory JSON_ELEMENT_FACTORY
+      = newFactory(JsonElement.class, JSON_ELEMENT);
+
+  private static final class EnumTypeAdapter<T extends Enum<T>> extends TypeAdapter<T> {
+    private final Map<String, T> nameToConstant = new HashMap<String, T>();
+    private final Map<T, String> constantToName = new HashMap<T, String>();
+
+    public EnumTypeAdapter(Class<T> classOfT) {
+      try {
+        for (T constant : classOfT.getEnumConstants()) {
+          String name = constant.name();
+          SerializedName annotation = classOfT.getField(name).getAnnotation(SerializedName.class);
+          if (annotation != null) {
+            name = annotation.value();
+          }
+          nameToConstant.put(name, constant);
+          constantToName.put(constant, name);
+        }
+      } catch (NoSuchFieldException e) {
+        throw new AssertionError();
+      }
+    }
+    public T read(JsonReader in) throws IOException {
+      if (in.peek() == JsonToken.NULL) {
+        in.nextNull();
+        return null;
+      }
+      return nameToConstant.get(in.nextString());
+    }
+
+    public void write(JsonWriter out, T value) throws IOException {
+      out.value(value == null ? null : constantToName.get(value));
+    }
+  }
+
+  public static final TypeAdapterFactory ENUM_FACTORY = newEnumTypeHierarchyFactory();
+
+  public static <TT> TypeAdapterFactory newEnumTypeHierarchyFactory() {
+    return new TypeAdapterFactory() {
+      @SuppressWarnings({"rawtypes", "unchecked"})
+      public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> typeToken) {
+        Class<? super T> rawType = typeToken.getRawType();
+        if (!Enum.class.isAssignableFrom(rawType) || rawType == Enum.class) {
+          return null;
+        }
+        if (!rawType.isEnum()) {
+          rawType = rawType.getSuperclass(); // handle anonymous subclasses
+        }
+        return (TypeAdapter<T>) new EnumTypeAdapter(rawType);
+      }
+    };
+  }
+
+  public static <TT> TypeAdapterFactory newFactory(
+      final TypeToken<TT> type, final TypeAdapter<TT> typeAdapter) {
+    return new TypeAdapterFactory() {
+      @SuppressWarnings("unchecked") // we use a runtime check to make sure the 'T's equal
+      public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> typeToken) {
+        return typeToken.equals(type) ? (TypeAdapter<T>) typeAdapter : null;
+      }
+    };
+  }
+
+  public static <TT> TypeAdapterFactory newFactory(
+      final Class<TT> type, final TypeAdapter<TT> typeAdapter) {
+    return new TypeAdapterFactory() {
+      @SuppressWarnings("unchecked") // we use a runtime check to make sure the 'T's equal
+      public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> typeToken) {
+        return typeToken.getRawType() == type ? (TypeAdapter<T>) typeAdapter : null;
+      }
+      @Override public String toString() {
+        return "Factory[type=" + type.getName() + ",adapter=" + typeAdapter + "]";
+      }
+    };
+  }
+
+  public static <TT> TypeAdapterFactory newFactory(
+      final Class<TT> unboxed, final Class<TT> boxed, final TypeAdapter<? super TT> typeAdapter) {
+    return new TypeAdapterFactory() {
+      @SuppressWarnings("unchecked") // we use a runtime check to make sure the 'T's equal
+      public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> typeToken) {
+        Class<? super T> rawType = typeToken.getRawType();
+        return (rawType == unboxed || rawType == boxed) ? (TypeAdapter<T>) typeAdapter : null;
+      }
+      @Override public String toString() {
+        return "Factory[type=" + boxed.getName()
+            + "+" + unboxed.getName() + ",adapter=" + typeAdapter + "]";
+      }
+    };
+  }
+
+  public static <TT> TypeAdapterFactory newFactoryForMultipleTypes(final Class<TT> base,
+      final Class<? extends TT> sub, final TypeAdapter<? super TT> typeAdapter) {
+    return new TypeAdapterFactory() {
+      @SuppressWarnings("unchecked") // we use a runtime check to make sure the 'T's equal
+      public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> typeToken) {
+        Class<? super T> rawType = typeToken.getRawType();
+        return (rawType == base || rawType == sub) ? (TypeAdapter<T>) typeAdapter : null;
+      }
+      @Override public String toString() {
+        return "Factory[type=" + base.getName()
+            + "+" + sub.getName() + ",adapter=" + typeAdapter + "]";
+      }
+    };
+  }
+
+  public static <TT> TypeAdapterFactory newTypeHierarchyFactory(
+      final Class<TT> clazz, final TypeAdapter<TT> typeAdapter) {
+    return new TypeAdapterFactory() {
+      @SuppressWarnings("unchecked")
+      public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> typeToken) {
+        return clazz.isAssignableFrom(typeToken.getRawType()) ? (TypeAdapter<T>) typeAdapter : null;
+      }
+      @Override public String toString() {
+        return "Factory[typeHierarchy=" + clazz.getName() + ",adapter=" + typeAdapter + "]";
+      }
+    };
+  }
+}

src/com/google/gson/internal/package-info.java

@@ -0,0 +1,7 @@
+/**
+ * Do NOT use any class in this package as they are meant for internal use in Gson.
+ * These classes will very likely change incompatibly in future versions. You have been warned.
+ *
+ * @author Inderjeet Singh, Joel Leitch, Jesse Wilson
+ */
+package com.google.gson.internal;

src/com/google/gson/package-info.java

@@ -0,0 +1,11 @@
+/**
+ * This package provides the {@link com.google.gson.Gson} class to convert Json to Java and
+ * vice-versa.
+ *
+ * <p>The primary class to use is {@link com.google.gson.Gson} which can be constructed with
+ * {@code new Gson()} (using default settings) or by using {@link com.google.gson.GsonBuilder}
+ * (to configure various options such as using versioning and so on).</p>
+ *
+ * @author Inderjeet Singh, Joel Leitch
+ */
+package com.google.gson;

src/com/google/gson/reflect/TypeToken.java

@@ -0,0 +1,305 @@
+/*
+ * Copyright (C) 2008 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson.reflect;
+
+import com.google.gson.internal.$Gson$Types;
+import com.google.gson.internal.$Gson$Preconditions;
+import java.lang.reflect.GenericArrayType;
+import java.lang.reflect.ParameterizedType;
+import java.lang.reflect.Type;
+import java.lang.reflect.TypeVariable;
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * Represents a generic type {@code T}. Java doesn't yet provide a way to
+ * represent generic types, so this class does. Forces clients to create a
+ * subclass of this class which enables retrieval the type information even at
+ * runtime.
+ *
+ * <p>For example, to create a type literal for {@code List<String>}, you can
+ * create an empty anonymous inner class:
+ *
+ * <p>
+ * {@code TypeToken<List<String>> list = new TypeToken<List<String>>() {};}
+ *
+ * <p>This syntax cannot be used to create type literals that have wildcard
+ * parameters, such as {@code Class<?>} or {@code List<? extends CharSequence>}.
+ *
+ * @author Bob Lee
+ * @author Sven Mawson
+ * @author Jesse Wilson
+ */
+public class TypeToken<T> {
+  final Class<? super T> rawType;
+  final Type type;
+  final int hashCode;
+
+  /**
+   * Constructs a new type literal. Derives represented class from type
+   * parameter.
+   *
+   * <p>Clients create an empty anonymous subclass. Doing so embeds the type
+   * parameter in the anonymous class's type hierarchy so we can reconstitute it
+   * at runtime despite erasure.
+   */
+  @SuppressWarnings("unchecked")
+  protected TypeToken() {
+    this.type = getSuperclassTypeParameter(getClass());
+    this.rawType = (Class<? super T>) $Gson$Types.getRawType(type);
+    this.hashCode = type.hashCode();
+  }
+
+  /**
+   * Unsafe. Constructs a type literal manually.
+   */
+  @SuppressWarnings("unchecked")
+  TypeToken(Type type) {
+    this.type = $Gson$Types.canonicalize($Gson$Preconditions.checkNotNull(type));
+    this.rawType = (Class<? super T>) $Gson$Types.getRawType(this.type);
+    this.hashCode = this.type.hashCode();
+  }
+
+  /**
+   * Returns the type from super class's type parameter in {@link $Gson$Types#canonicalize
+   * canonical form}.
+   */
+  static Type getSuperclassTypeParameter(Class<?> subclass) {
+    Type superclass = subclass.getGenericSuperclass();
+    if (superclass instanceof Class) {
+      throw new RuntimeException("Missing type parameter.");
+    }
+    ParameterizedType parameterized = (ParameterizedType) superclass;
+    return $Gson$Types.canonicalize(parameterized.getActualTypeArguments()[0]);
+  }
+
+  /**
+   * Returns the raw (non-generic) type for this type.
+   */
+  public final Class<? super T> getRawType() {
+    return rawType;
+  }
+
+  /**
+   * Gets underlying {@code Type} instance.
+   */
+  public final Type getType() {
+    return type;
+  }
+
+  /**
+   * Check if this type is assignable from the given class object.
+   *
+   * @deprecated this implementation may be inconsistent with javac for types
+   *     with wildcards.
+   */
+  @Deprecated
+  public boolean isAssignableFrom(Class<?> cls) {
+    return isAssignableFrom((Type) cls);
+  }
+
+  /**
+   * Check if this type is assignable from the given Type.
+   *
+   * @deprecated this implementation may be inconsistent with javac for types
+   *     with wildcards.
+   */
+  @Deprecated
+  public boolean isAssignableFrom(Type from) {
+    if (from == null) {
+      return false;
+    }
+
+    if (type.equals(from)) {
+      return true;
+    }
+
+    if (type instanceof Class<?>) {
+      return rawType.isAssignableFrom($Gson$Types.getRawType(from));
+    } else if (type instanceof ParameterizedType) {
+      return isAssignableFrom(from, (ParameterizedType) type,
+          new HashMap<String, Type>());
+    } else if (type instanceof GenericArrayType) {
+      return rawType.isAssignableFrom($Gson$Types.getRawType(from))
+          && isAssignableFrom(from, (GenericArrayType) type);
+    } else {
+      throw buildUnexpectedTypeError(
+          type, Class.class, ParameterizedType.class, GenericArrayType.class);
+    }
+  }
+
+  /**
+   * Check if this type is assignable from the given type token.
+   *
+   * @deprecated this implementation may be inconsistent with javac for types
+   *     with wildcards.
+   */
+  @Deprecated
+  public boolean isAssignableFrom(TypeToken<?> token) {
+    return isAssignableFrom(token.getType());
+  }
+
+  /**
+   * Private helper function that performs some assignability checks for
+   * the provided GenericArrayType.
+   */
+  private static boolean isAssignableFrom(Type from, GenericArrayType to) {
+    Type toGenericComponentType = to.getGenericComponentType();
+    if (toGenericComponentType instanceof ParameterizedType) {
+      Type t = from;
+      if (from instanceof GenericArrayType) {
+        t = ((GenericArrayType) from).getGenericComponentType();
+      } else if (from instanceof Class<?>) {
+        Class<?> classType = (Class<?>) from;
+        while (classType.isArray()) {
+          classType = classType.getComponentType();
+        }
+        t = classType;
+      }
+      return isAssignableFrom(t, (ParameterizedType) toGenericComponentType,
+          new HashMap<String, Type>());
+    }
+    // No generic defined on "to"; therefore, return true and let other
+    // checks determine assignability
+    return true;
+  }
+
+  /**
+   * Private recursive helper function to actually do the type-safe checking
+   * of assignability.
+   */
+  private static boolean isAssignableFrom(Type from, ParameterizedType to,
+      Map<String, Type> typeVarMap) {
+
+    if (from == null) {
+      return false;
+    }
+
+    if (to.equals(from)) {
+      return true;
+    }
+
+    // First figure out the class and any type information.
+    Class<?> clazz = $Gson$Types.getRawType(from);
+    ParameterizedType ptype = null;
+    if (from instanceof ParameterizedType) {
+      ptype = (ParameterizedType) from;
+    }
+
+    // Load up parameterized variable info if it was parameterized.
+    if (ptype != null) {
+      Type[] tArgs = ptype.getActualTypeArguments();
+      TypeVariable<?>[] tParams = clazz.getTypeParameters();
+      for (int i = 0; i < tArgs.length; i++) {
+        Type arg = tArgs[i];
+        TypeVariable<?> var = tParams[i];
+        while (arg instanceof TypeVariable<?>) {
+          TypeVariable<?> v = (TypeVariable<?>) arg;
+          arg = typeVarMap.get(v.getName());
+        }
+        typeVarMap.put(var.getName(), arg);
+      }
+
+      // check if they are equivalent under our current mapping.
+      if (typeEquals(ptype, to, typeVarMap)) {
+        return true;
+      }
+    }
+
+    for (Type itype : clazz.getGenericInterfaces()) {
+      if (isAssignableFrom(itype, to, new HashMap<String, Type>(typeVarMap))) {
+        return true;
+      }
+    }
+
+    // Interfaces didn't work, try the superclass.
+    Type sType = clazz.getGenericSuperclass();
+    return isAssignableFrom(sType, to, new HashMap<String, Type>(typeVarMap));
+  }
+
+  /**
+   * Checks if two parameterized types are exactly equal, under the variable
+   * replacement described in the typeVarMap.
+   */
+  private static boolean typeEquals(ParameterizedType from,
+      ParameterizedType to, Map<String, Type> typeVarMap) {
+    if (from.getRawType().equals(to.getRawType())) {
+      Type[] fromArgs = from.getActualTypeArguments();
+      Type[] toArgs = to.getActualTypeArguments();
+      for (int i = 0; i < fromArgs.length; i++) {
+        if (!matches(fromArgs[i], toArgs[i], typeVarMap)) {
+          return false;
+        }
+      }
+      return true;
+    }
+    return false;
+  }
+
+  private static AssertionError buildUnexpectedTypeError(
+      Type token, Class<?>... expected) {
+
+    // Build exception message
+    StringBuilder exceptionMessage =
+        new StringBuilder("Unexpected type. Expected one of: ");
+    for (Class<?> clazz : expected) {
+      exceptionMessage.append(clazz.getName()).append(", ");
+    }
+    exceptionMessage.append("but got: ").append(token.getClass().getName())
+        .append(", for type token: ").append(token.toString()).append('.');
+
+    return new AssertionError(exceptionMessage.toString());
+  }
+
+  /**
+   * Checks if two types are the same or are equivalent under a variable mapping
+   * given in the type map that was provided.
+   */
+  private static boolean matches(Type from, Type to, Map<String, Type> typeMap) {
+    return to.equals(from)
+        || (from instanceof TypeVariable
+        && to.equals(typeMap.get(((TypeVariable<?>) from).getName())));
+
+  }
+
+  @Override public final int hashCode() {
+    return this.hashCode;
+  }
+
+  @Override public final boolean equals(Object o) {
+    return o instanceof TypeToken<?>
+        && $Gson$Types.equals(type, ((TypeToken<?>) o).type);
+  }
+
+  @Override public final String toString() {
+    return $Gson$Types.typeToString(type);
+  }
+
+  /**
+   * Gets type literal for the given {@code Type} instance.
+   */
+  public static TypeToken<?> get(Type type) {
+    return new TypeToken<Object>(type);
+  }
+
+  /**
+   * Gets type literal for the given {@code Class} instance.
+   */
+  public static <T> TypeToken<T> get(Class<T> type) {
+    return new TypeToken<T>(type);
+  }
+}

src/com/google/gson/reflect/package-info.java

@@ -0,0 +1,6 @@
+/**
+ * This package provides utility classes for finding type information for generic types.
+ *  
+ * @author Inderjeet Singh, Joel Leitch
+ */
+package com.google.gson.reflect;

src/com/google/gson/stream/JsonScope.java

@@ -0,0 +1,71 @@
+/*
+ * Copyright (C) 2010 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson.stream;
+
+/**
+ * Lexical scoping elements within a JSON reader or writer.
+ *
+ * @author Jesse Wilson
+ * @since 1.6
+ */
+enum JsonScope {
+
+    /**
+     * An array with no elements requires no separators or newlines before
+     * it is closed.
+     */
+    EMPTY_ARRAY,
+
+    /**
+     * A array with at least one value requires a comma and newline before
+     * the next element.
+     */
+    NONEMPTY_ARRAY,
+
+    /**
+     * An object with no name/value pairs requires no separators or newlines
+     * before it is closed.
+     */
+    EMPTY_OBJECT,
+
+    /**
+     * An object whose most recent element is a key. The next element must
+     * be a value.
+     */
+    DANGLING_NAME,
+
+    /**
+     * An object with at least one name/value pair requires a comma and
+     * newline before the next element.
+     */
+    NONEMPTY_OBJECT,
+
+    /**
+     * No object or array has been started.
+     */
+    EMPTY_DOCUMENT,
+
+    /**
+     * A document with at an array or object.
+     */
+    NONEMPTY_DOCUMENT,
+
+    /**
+     * A document that's been closed and cannot be accessed.
+     */
+    CLOSED,
+}

src/com/google/gson/stream/JsonToken.java

@@ -0,0 +1,85 @@
+/*
+ * Copyright (C) 2010 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson.stream;
+
+/**
+ * A structure, name or value type in a JSON-encoded string.
+ *
+ * @author Jesse Wilson
+ * @since 1.6
+ */
+public enum JsonToken {
+
+  /**
+   * The opening of a JSON array. Written using {@link JsonWriter#beginObject}
+   * and read using {@link JsonReader#beginObject}.
+   */
+  BEGIN_ARRAY,
+
+  /**
+   * The closing of a JSON array. Written using {@link JsonWriter#endArray}
+   * and read using {@link JsonReader#endArray}.
+   */
+  END_ARRAY,
+
+  /**
+   * The opening of a JSON object. Written using {@link JsonWriter#beginObject}
+   * and read using {@link JsonReader#beginObject}.
+   */
+  BEGIN_OBJECT,
+
+  /**
+   * The closing of a JSON object. Written using {@link JsonWriter#endObject}
+   * and read using {@link JsonReader#endObject}.
+   */
+  END_OBJECT,
+
+  /**
+   * A JSON property name. Within objects, tokens alternate between names and
+   * their values. Written using {@link JsonWriter#name} and read using {@link
+   * JsonReader#nextName}
+   */
+  NAME,
+
+  /**
+   * A JSON string.
+   */
+  STRING,
+
+  /**
+   * A JSON number represented in this API by a Java {@code double}, {@code
+   * long}, or {@code int}.
+   */
+  NUMBER,
+
+  /**
+   * A JSON {@code true} or {@code false}.
+   */
+  BOOLEAN,
+
+  /**
+   * A JSON {@code null}.
+   */
+  NULL,
+
+  /**
+   * The end of the JSON stream. This sentinel value is returned by {@link
+   * JsonReader#peek()} to signal that the JSON-encoded value has no more
+   * tokens.
+   */
+  END_DOCUMENT
+}

src/com/google/gson/stream/JsonWriter.java

@@ -0,0 +1,610 @@
+/*
+ * Copyright (C) 2010 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson.stream;
+
+import java.io.Closeable;
+import java.io.IOException;
+import java.io.Writer;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Writes a JSON (<a href="http://www.ietf.org/rfc/rfc4627.txt">RFC 4627</a>)
+ * encoded value to a stream, one token at a time. The stream includes both
+ * literal values (strings, numbers, booleans and nulls) as well as the begin
+ * and end delimiters of objects and arrays.
+ *
+ * <h3>Encoding JSON</h3>
+ * To encode your data as JSON, create a new {@code JsonWriter}. Each JSON
+ * document must contain one top-level array or object. Call methods on the
+ * writer as you walk the structure's contents, nesting arrays and objects as
+ * necessary:
+ * <ul>
+ *   <li>To write <strong>arrays</strong>, first call {@link #beginArray()}.
+ *       Write each of the array's elements with the appropriate {@link #value}
+ *       methods or by nesting other arrays and objects. Finally close the array
+ *       using {@link #endArray()}.
+ *   <li>To write <strong>objects</strong>, first call {@link #beginObject()}.
+ *       Write each of the object's properties by alternating calls to
+ *       {@link #name} with the property's value. Write property values with the
+ *       appropriate {@link #value} method or by nesting other objects or arrays.
+ *       Finally close the object using {@link #endObject()}.
+ * </ul>
+ *
+ * <h3>Example</h3>
+ * Suppose we'd like to encode a stream of messages such as the following: <pre> {@code
+ * [
+ *   {
+ *     "id": 912345678901,
+ *     "text": "How do I stream JSON in Java?",
+ *     "geo": null,
+ *     "user": {
+ *       "name": "json_newb",
+ *       "followers_count": 41
+ *      }
+ *   },
+ *   {
+ *     "id": 912345678902,
+ *     "text": "@json_newb just use JsonWriter!",
+ *     "geo": [50.454722, -104.606667],
+ *     "user": {
+ *       "name": "jesse",
+ *       "followers_count": 2
+ *     }
+ *   }
+ * ]}</pre>
+ * This code encodes the above structure: <pre>   {@code
+ *   public void writeJsonStream(OutputStream out, List<Message> messages) throws IOException {
+ *     JsonWriter writer = new JsonWriter(new OutputStreamWriter(out, "UTF-8"));
+ *     writer.setIndentSpaces(4);
+ *     writeMessagesArray(writer, messages);
+ *     writer.close();
+ *   }
+ *
+ *   public void writeMessagesArray(JsonWriter writer, List<Message> messages) throws IOException {
+ *     writer.beginArray();
+ *     for (Message message : messages) {
+ *       writeMessage(writer, message);
+ *     }
+ *     writer.endArray();
+ *   }
+ *
+ *   public void writeMessage(JsonWriter writer, Message message) throws IOException {
+ *     writer.beginObject();
+ *     writer.name("id").value(message.getId());
+ *     writer.name("text").value(message.getText());
+ *     if (message.getGeo() != null) {
+ *       writer.name("geo");
+ *       writeDoublesArray(writer, message.getGeo());
+ *     } else {
+ *       writer.name("geo").nullValue();
+ *     }
+ *     writer.name("user");
+ *     writeUser(writer, message.getUser());
+ *     writer.endObject();
+ *   }
+ *
+ *   public void writeUser(JsonWriter writer, User user) throws IOException {
+ *     writer.beginObject();
+ *     writer.name("name").value(user.getName());
+ *     writer.name("followers_count").value(user.getFollowersCount());
+ *     writer.endObject();
+ *   }
+ *
+ *   public void writeDoublesArray(JsonWriter writer, List<Double> doubles) throws IOException {
+ *     writer.beginArray();
+ *     for (Double value : doubles) {
+ *       writer.value(value);
+ *     }
+ *     writer.endArray();
+ *   }}</pre>
+ *
+ * <p>Each {@code JsonWriter} may be used to write a single JSON stream.
+ * Instances of this class are not thread safe. Calls that would result in a
+ * malformed JSON string will fail with an {@link IllegalStateException}.
+ *
+ * @author Jesse Wilson
+ * @since 1.6
+ */
+public class JsonWriter implements Closeable {
+
+  /** The output data, containing at most one top-level array or object. */
+  private final Writer out;
+
+  private final List<JsonScope> stack = new ArrayList<JsonScope>();
+  {
+    stack.add(JsonScope.EMPTY_DOCUMENT);
+  }
+
+  /**
+   * A string containing a full set of spaces for a single level of
+   * indentation, or null for no pretty printing.
+   */
+  private String indent;
+
+  /**
+   * The name/value separator; either ":" or ": ".
+   */
+  private String separator = ":";
+
+  private boolean lenient;
+
+  private boolean htmlSafe;
+
+  private String deferredName;
+
+  private boolean serializeNulls = true;
+
+  /**
+   * Creates a new instance that writes a JSON-encoded stream to {@code out}.
+   * For best performance, ensure {@link Writer} is buffered; wrapping in
+   * {@link java.io.BufferedWriter BufferedWriter} if necessary.
+   */
+  public JsonWriter(Writer out) {
+    if (out == null) {
+      throw new NullPointerException("out == null");
+    }
+    this.out = out;
+  }
+
+  /**
+   * Sets the indentation string to be repeated for each level of indentation
+   * in the encoded document. If {@code indent.isEmpty()} the encoded document
+   * will be compact. Otherwise the encoded document will be more
+   * human-readable.
+   *
+   * @param indent a string containing only whitespace.
+   */
+  public final void setIndent(String indent) {
+    if (indent.length() == 0) {
+      this.indent = null;
+      this.separator = ":";
+    } else {
+      this.indent = indent;
+      this.separator = ": ";
+    }
+  }
+
+  /**
+   * Configure this writer to relax its syntax rules. By default, this writer
+   * only emits well-formed JSON as specified by <a
+   * href="http://www.ietf.org/rfc/rfc4627.txt">RFC 4627</a>. Setting the writer
+   * to lenient permits the following:
+   * <ul>
+   *   <li>Top-level values of any type. With strict writing, the top-level
+   *       value must be an object or an array.
+   *   <li>Numbers may be {@link Double#isNaN() NaNs} or {@link
+   *       Double#isInfinite() infinities}.
+   * </ul>
+   */
+  public final void setLenient(boolean lenient) {
+    this.lenient = lenient;
+  }
+
+  /**
+   * Returns true if this writer has relaxed syntax rules.
+   */
+  public boolean isLenient() {
+    return lenient;
+  }
+
+  /**
+   * Configure this writer to emit JSON that's safe for direct inclusion in HTML
+   * and XML documents. This escapes the HTML characters {@code <}, {@code >},
+   * {@code &} and {@code =} before writing them to the stream. Without this
+   * setting, your XML/HTML encoder should replace these characters with the
+   * corresponding escape sequences.
+   */
+  public final void setHtmlSafe(boolean htmlSafe) {
+    this.htmlSafe = htmlSafe;
+  }
+
+  /**
+   * Returns true if this writer writes JSON that's safe for inclusion in HTML
+   * and XML documents.
+   */
+  public final boolean isHtmlSafe() {
+    return htmlSafe;
+  }
+
+  /**
+   * Sets whether object members are serialized when their value is null.
+   * This has no impact on array elements. The default is true.
+   */
+  public final void setSerializeNulls(boolean serializeNulls) {
+    this.serializeNulls = serializeNulls;
+  }
+
+  /**
+   * Returns true if object members are serialized when their value is null.
+   * This has no impact on array elements. The default is true.
+   */
+  public final boolean getSerializeNulls() {
+    return serializeNulls;
+  }
+
+  /**
+   * Begins encoding a new array. Each call to this method must be paired with
+   * a call to {@link #endArray}.
+   *
+   * @return this writer.
+   */
+  public JsonWriter beginArray() throws IOException {
+    writeDeferredName();
+    return open(JsonScope.EMPTY_ARRAY, "[");
+  }
+
+  /**
+   * Ends encoding the current array.
+   *
+   * @return this writer.
+   */
+  public JsonWriter endArray() throws IOException {
+    return close(JsonScope.EMPTY_ARRAY, JsonScope.NONEMPTY_ARRAY, "]");
+  }
+
+  /**
+   * Begins encoding a new object. Each call to this method must be paired
+   * with a call to {@link #endObject}.
+   *
+   * @return this writer.
+   */
+  public JsonWriter beginObject() throws IOException {
+    writeDeferredName();
+    return open(JsonScope.EMPTY_OBJECT, "{");
+  }
+
+  /**
+   * Ends encoding the current object.
+   *
+   * @return this writer.
+   */
+  public JsonWriter endObject() throws IOException {
+    return close(JsonScope.EMPTY_OBJECT, JsonScope.NONEMPTY_OBJECT, "}");
+  }
+
+  /**
+   * Enters a new scope by appending any necessary whitespace and the given
+   * bracket.
+   */
+  private JsonWriter open(JsonScope empty, String openBracket) throws IOException {
+    beforeValue(true);
+    stack.add(empty);
+    out.write(openBracket);
+    return this;
+  }
+
+  /**
+   * Closes the current scope by appending any necessary whitespace and the
+   * given bracket.
+   */
+  private JsonWriter close(JsonScope empty, JsonScope nonempty, String closeBracket)
+      throws IOException {
+    JsonScope context = peek();
+    if (context != nonempty && context != empty) {
+      throw new IllegalStateException("Nesting problem: " + stack);
+    }
+    if (deferredName != null) {
+      throw new IllegalStateException("Dangling name: " + deferredName);
+    }
+
+    stack.remove(stack.size() - 1);
+    if (context == nonempty) {
+      newline();
+    }
+    out.write(closeBracket);
+    return this;
+  }
+
+  /**
+   * Returns the value on the top of the stack.
+   */
+  private JsonScope peek() {
+    return stack.get(stack.size() - 1);
+  }
+
+  /**
+   * Replace the value on the top of the stack with the given value.
+   */
+  private void replaceTop(JsonScope topOfStack) {
+    stack.set(stack.size() - 1, topOfStack);
+  }
+
+  /**
+   * Encodes the property name.
+   *
+   * @param name the name of the forthcoming value. May not be null.
+   * @return this writer.
+   */
+  public JsonWriter name(String name) throws IOException {
+    if (name == null) {
+      throw new NullPointerException("name == null");
+    }
+    if (deferredName != null) {
+      throw new IllegalStateException();
+    }
+    deferredName = name;
+    return this;
+  }
+
+  private void writeDeferredName() throws IOException {
+    if (deferredName != null) {
+      beforeName();
+      string(deferredName);
+      deferredName = null;
+    }
+  }
+
+  /**
+   * Encodes {@code value}.
+   *
+   * @param value the literal string value, or null to encode a null literal.
+   * @return this writer.
+   */
+  public JsonWriter value(String value) throws IOException {
+    if (value == null) {
+      return nullValue();
+    }
+    writeDeferredName();
+    beforeValue(false);
+    string(value);
+    return this;
+  }
+
+  /**
+   * Encodes {@code null}.
+   *
+   * @return this writer.
+   */
+  public JsonWriter nullValue() throws IOException {
+    if (deferredName != null) {
+      if (serializeNulls) {
+        writeDeferredName();
+      } else {
+        deferredName = null;
+        return this; // skip the name and the value
+      }
+    }
+    beforeValue(false);
+    out.write("null");
+    return this;
+  }
+
+  /**
+   * Encodes {@code value}.
+   *
+   * @return this writer.
+   */
+  public JsonWriter value(boolean value) throws IOException {
+    writeDeferredName();
+    beforeValue(false);
+    out.write(value ? "true" : "false");
+    return this;
+  }
+
+  /**
+   * Encodes {@code value}.
+   *
+   * @param value a finite value. May not be {@link Double#isNaN() NaNs} or
+   *     {@link Double#isInfinite() infinities}.
+   * @return this writer.
+   */
+  public JsonWriter value(double value) throws IOException {
+    if (Double.isNaN(value) || Double.isInfinite(value)) {
+      throw new IllegalArgumentException("Numeric values must be finite, but was " + value);
+    }
+    writeDeferredName();
+    beforeValue(false);
+    out.append(Double.toString(value));
+    return this;
+  }
+
+  /**
+   * Encodes {@code value}.
+   *
+   * @return this writer.
+   */
+  public JsonWriter value(long value) throws IOException {
+    writeDeferredName();
+    beforeValue(false);
+    out.write(Long.toString(value));
+    return this;
+  }
+
+  /**
+   * Encodes {@code value}.
+   *
+   * @param value a finite value. May not be {@link Double#isNaN() NaNs} or
+   *     {@link Double#isInfinite() infinities}.
+   * @return this writer.
+   */
+  public JsonWriter value(Number value) throws IOException {
+    if (value == null) {
+      return nullValue();
+    }
+
+    writeDeferredName();
+    String string = value.toString();
+    if (!lenient
+        && (string.equals("-Infinity") || string.equals("Infinity") || string.equals("NaN"))) {
+      throw new IllegalArgumentException("Numeric values must be finite, but was " + value);
+    }
+    beforeValue(false);
+    out.append(string);
+    return this;
+  }
+
+  /**
+   * Ensures all buffered data is written to the underlying {@link Writer}
+   * and flushes that writer.
+   */
+  public void flush() throws IOException {
+    out.flush();
+  }
+
+  /**
+   * Flushes and closes this writer and the underlying {@link Writer}.
+   *
+   * @throws IOException if the JSON document is incomplete.
+   */
+  public void close() throws IOException {
+    out.close();
+
+    if (peek() != JsonScope.NONEMPTY_DOCUMENT) {
+      throw new IOException("Incomplete document");
+    }
+  }
+
+  private void string(String value) throws IOException {
+    out.write("\"");
+    for (int i = 0, length = value.length(); i < length; i++) {
+      char c = value.charAt(i);
+
+      /*
+       * From RFC 4627, "All Unicode characters may be placed within the
+       * quotation marks except for the characters that must be escaped:
+       * quotation mark, reverse solidus, and the control characters
+       * (U+0000 through U+001F)."
+       *
+       * We also escape '\u2028' and '\u2029', which JavaScript interprets as
+       * newline characters. This prevents eval() from failing with a syntax
+       * error. http://code.google.com/p/google-gson/issues/detail?id=341
+       */
+      switch (c) {
+      case '"':
+      case '\\':
+        out.write('\\');
+        out.write(c);
+        break;
+
+      case '\t':
+        out.write("\\t");
+        break;
+
+      case '\b':
+        out.write("\\b");
+        break;
+
+      case '\n':
+        out.write("\\n");
+        break;
+
+      case '\r':
+        out.write("\\r");
+        break;
+
+      case '\f':
+        out.write("\\f");
+        break;
+
+      case '<':
+      case '>':
+      case '&':
+      case '=':
+      case '\'':
+        if (htmlSafe) {
+          out.write(String.format("\\u%04x", (int) c));
+        } else {
+          out.write(c);
+        }
+        break;
+
+      case '\u2028':
+      case '\u2029':
+        out.write(String.format("\\u%04x", (int) c));
+        break;
+
+      default:
+        if (c <= 0x1F) {
+          out.write(String.format("\\u%04x", (int) c));
+        } else {
+          out.write(c);
+        }
+        break;
+      }
+    }
+    out.write("\"");
+  }
+
+  private void newline() throws IOException {
+    if (indent == null) {
+      return;
+    }
+
+    out.write("\n");
+    for (int i = 1; i < stack.size(); i++) {
+      out.write(indent);
+    }
+  }
+
+  /**
+   * Inserts any necessary separators and whitespace before a name. Also
+   * adjusts the stack to expect the name's value.
+   */
+  private void beforeName() throws IOException {
+    JsonScope context = peek();
+    if (context == JsonScope.NONEMPTY_OBJECT) { // first in object
+      out.write(',');
+    } else if (context != JsonScope.EMPTY_OBJECT) { // not in an object!
+      throw new IllegalStateException("Nesting problem: " + stack);
+    }
+    newline();
+    replaceTop(JsonScope.DANGLING_NAME);
+  }
+
+  /**
+   * Inserts any necessary separators and whitespace before a literal value,
+   * inline array, or inline object. Also adjusts the stack to expect either a
+   * closing bracket or another element.
+   *
+   * @param root true if the value is a new array or object, the two values
+   *     permitted as top-level elements.
+   */
+  private void beforeValue(boolean root) throws IOException {
+    switch (peek()) {
+    case EMPTY_DOCUMENT: // first in document
+      if (!lenient && !root) {
+        throw new IllegalStateException(
+            "JSON must start with an array or an object.");
+      }
+      replaceTop(JsonScope.NONEMPTY_DOCUMENT);
+      break;
+
+    case EMPTY_ARRAY: // first in array
+      replaceTop(JsonScope.NONEMPTY_ARRAY);
+      newline();
+      break;
+
+    case NONEMPTY_ARRAY: // another in array
+      out.append(',');
+      newline();
+      break;
+
+    case DANGLING_NAME: // value for name
+      out.append(separator);
+      replaceTop(JsonScope.NONEMPTY_OBJECT);
+      break;
+
+    case NONEMPTY_DOCUMENT:
+        throw new IllegalStateException(
+            "JSON must have only one top-level value.");
+
+    default:
+      throw new IllegalStateException("Nesting problem: " + stack);
+    }
+  }
+}

src/com/google/gson/stream/MalformedJsonException.java

@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2010 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson.stream;
+
+import java.io.IOException;
+
+/**
+ * Thrown when a reader encounters malformed JSON. Some syntax errors can be
+ * ignored by calling {@link JsonReader#setLenient(boolean)}.
+ */
+public final class MalformedJsonException extends IOException {
+  private static final long serialVersionUID = 1L;
+
+  public MalformedJsonException(String msg) {
+    super(msg);
+  }
+
+  public MalformedJsonException(String msg, Throwable throwable) {
+    super(msg);
+    // Using initCause() instead of calling super() because Java 1.5 didn't retrofit IOException
+    // with a constructor with Throwable. This was done in Java 1.6
+    initCause(throwable);
+  }
+
+  public MalformedJsonException(Throwable throwable) {
+    // Using initCause() instead of calling super() because Java 1.5 didn't retrofit IOException
+    // with a constructor with Throwable. This was done in Java 1.6
+    initCause(throwable);
+  }
+}

src/com/google/gson/stream/StringPool.java

@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2011 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.gson.stream;
+
+/**
+ * A pool of string instances. Unlike the {@link String#intern() VM's
+ * interned strings}, this pool provides no guarantee of reference equality.
+ * It is intended only to save allocations. This class is not thread safe.
+ */
+final class StringPool {
+
+  private final String[] pool = new String[512];
+
+  /**
+   * Returns a string equal to {@code new String(array, start, length)}.
+   */
+  public String get(char[] array, int start, int length) {
+    // Compute an arbitrary hash of the content
+    int hashCode = 0;
+    for (int i = start; i < start + length; i++) {
+      hashCode = (hashCode * 31) + array[i];
+    }
+
+    // Pick a bucket using Doug Lea's supplemental secondaryHash function (from HashMap)
+    hashCode ^= (hashCode >>> 20) ^ (hashCode >>> 12);
+    hashCode ^= (hashCode >>> 7) ^ (hashCode >>> 4);
+    int index = hashCode & (pool.length - 1);
+
+    String pooled = pool[index];
+    if (pooled == null || pooled.length() != length) {
+      String result = new String(array, start, length);
+      pool[index] = result;
+      return result;
+    }
+
+    for (int i = 0; i < length; i++) {
+      if (pooled.charAt(i) != array[start + i]) {
+        String result = new String(array, start, length);
+        pool[index] = result;
+        return result;
+      }
+    }
+
+    return pooled;
+  }
+}

src/org/kne/cloud/network/klalb/Consts.java

@@ -1,8 +1,8 @@
 package org.kne.cloud.network.klalb;
 
 public class Consts {
-	public static final int BLOCKSIZE=65536;
+	public static final int BLOCKSIZE=16384;
-	public static final long PINGTIMENS=10000000000L;
+	public static final long PINGTIMENS=2000000000L;
 	public static final double A = 0.125;
 	public static final int SO_TIMEOUT = 20000;
 	public static final long SN_KEEP = 60000000000L;

src/org/kne/cloud/network/klalb/IOThreadManager.java

@@ -32,7 +32,7 @@ public class IOThreadManager {
 				sbk.cuid = tc.getCuid();
 				sbk.number = 0;
 				sbk.command = 2;
-				sbk.lservice = tc.getServiceElement().proc;
+				sbk.lservice = tc.getServiceElement().name;
 				sbk.lipport = tc.getServiceElement().ipport;
 				klc.submitDataBlockNoDelay(sbk);
 			}
@@ -165,6 +165,7 @@ public class IOThreadManager {
 
 	public void close() {
 		isopen = false;
+		//klc.get
 	}
 
 	public boolean isOpen() {

src/org/kne/cloud/network/klalb/InputMetre.java

@@ -0,0 +1,72 @@
+package org.kne.cloud.network.klalb;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.concurrent.atomic.AtomicLong;
+
+public class InputMetre extends InputStream {
+
+	private InputStream in;
+	private AtomicLong total=new AtomicLong(0);
+	public InputMetre(InputStream inputStream) {
+		this.in=inputStream;
+	}
+	
+	@Override
+	public int read() throws IOException {
+	int v=in.read();
+	if(v!=-1) {
+		total.incrementAndGet();
+	}
+		return v;
+	}
+
+	@Override
+	public int read(byte[] b) throws IOException {
+		int v=in.read(b);
+		if(v!=-1) {
+			total.addAndGet(v);
+		}
+		return v;
+	}
+
+	@Override
+	public int read(byte[] b, int off, int len) throws IOException {
+		int v=in.read(b, off, len);
+		if(v!=-1) {
+			total.addAndGet(v);
+		}
+		return v;
+	}
+
+	@Override
+	public long skip(long n) throws IOException {
+		return in.skip(n);
+	}
+
+	@Override
+	public int available() throws IOException {
+		return in.available();
+	}
+
+	@Override
+	public void close() throws IOException {
+		in.close();
+	}
+
+	@Override
+	public synchronized void mark(int readlimit) {
+		in.mark(readlimit);
+	}
+
+	@Override
+	public synchronized void reset() throws IOException {
+		in.reset();
+	}
+
+	@Override
+	public boolean markSupported() {
+		return in.markSupported();
+	}
+
+}

src/org/kne/cloud/network/klalb/KLALBBlock.java

@@ -11,7 +11,7 @@ public class KLALBBlock implements Comparable<KLALBBlock>{
 	private static AtomicLong sng=new AtomicLong(1);
 	
 	public long sn;//每个数据包的唯一编号
-	public UUID cuid;//用于识别数据包的stream ID号
+	public long cuid;//用于识别数据包的stream ID号
 	public long number;//数据包的编号，用于排序
 	public byte[]data;//数据内容
 	public int command;//功能标记 0=PING 1=PONG 2=SYN 3=RST

src/org/kne/cloud/network/klalb/KLALBCM.java

@@ -0,0 +1,64 @@
+package org.kne.cloud.network.klalb;
+
+import java.io.File;
+import java.io.IOException;
+import java.io.PrintStream;
+import java.net.BindException;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+import java.util.Iterator;
+import java.util.List;
+
+import org.kne.cloud.network.mport.ServiceElement;
+
+public class KLALBCM {
+	
+	public static void main(String[] args) throws IOException {
+		if(args.length==0){
+			System.out.println("命令行参数输入服务器任意一条线路的地址:端口可以下载服务器线路列表");
+			System.out.println("命令行参数输入服务器名称即可启动负载均衡");
+		}else if(args.length==1) {
+			if(args[0].equals("-gui")) {
+				KLALBClientGUI.main(args);
+			}else
+			if(args[0].contains(":")) {
+				KLALBIPList.createIPList(args[0]);
+			}else {
+				File pdis=KLALBIPList.getSLdir(args[0]);
+				File f=new File(pdis,"iplist.json");
+				if(f.exists()) {
+					System.out.println("加载线路列表："+f);
+					 byte[] bytes;
+						try {
+							KLALBIPList.updateIPList(args[0]);
+							bytes = Files.readAllBytes(Paths.get(f.toURI()));
+						  STJson stj=new STJson(new String(bytes));
+						  KLALBClient kc= new KLALBClient();
+						  kc.getTls().addAll(stj.getTunnels());
+						  kc.connectTunnel();
+						  List<ServiceElement> lse=stj.getServices();
+						  for (Iterator<ServiceElement> iterator = lse.iterator(); iterator.hasNext();) {
+							ServiceElement serviceElement = (ServiceElement) iterator.next();
+							ProxyIPPortProperties pippp=new ProxyIPPortProperties(pdis, serviceElement.name, "127.0.0.1", serviceElement.ipport.getPort());
+							try {
+							kc.open(pippp.getBindPort(),serviceElement, pippp.getBindIP());
+							}catch(BindException e) {
+								System.out.println("打开端口失败："+pippp.getBindIP()+" "+pippp.getBindPort());
+								e.printStackTrace();
+							}
+						  }
+						  
+						   }catch (IOException e) {
+							e.printStackTrace();
+						}
+					
+				}else {
+					System.out.println("线路列表不存在");
+				}
+			}
+		}else {
+			
+		}
+		
+	}
+}

src/org/kne/cloud/network/klalb/KLALBClient.java

@@ -5,6 +5,8 @@ import java.io.BufferedOutputStream;
 import java.io.EOFException;
 import java.io.File;
 import java.io.IOException;
+import java.io.PrintStream;
+import java.io.StringReader;
 import java.net.ConnectException;
 import java.net.MalformedURLException;
 import java.net.Socket;
@@ -12,7 +14,10 @@ import java.net.SocketTimeoutException;
 import java.net.URI;
 import java.net.URL;
 import java.net.UnknownHostException;
+import java.nio.file.Files;
+import java.nio.file.Paths;
 import java.util.ArrayList;
+import java.util.Iterator;
 import java.util.List;
 import java.util.Scanner;
 import java.util.UUID;
@@ -23,19 +28,20 @@ import org.kne.cloud.network.mport.IPPort;
 import org.kne.cloud.network.mport.ServiceElement;
 import org.kne.cloud.network.mport.ThreadTool;
 
+import com.google.gson.stream.JsonReader;
+
 public class KLALBClient {
 
-	UUID suid=UUID.randomUUID();
+	private UUID suid=UUID.randomUUID();
-	IOThreadManager iom=new IOThreadManager();
+	private IOThreadManager iom=new IOThreadManager();
 		private	List<Tunnel> tls=new ArrayList<>();
-		private 	TCPListener tcpl;
+		private List<TCPListener> tcpl=new ArrayList<>();
-		private ServiceElement sel;
 
 
 	
-	public void open(int port) throws IOException {
+	public void open(int port, ServiceElement sel,String bindip) throws IOException {
-		tcpl=new TCPListener(port);
+		TCPListener tl=new TCPListener(port,bindip);
-		tcpl.setCon((s)->{
+		tl.setCon((s)->{
 			LocalTCPConnection tcc = null;
 			try {
 				tcc = new LocalTCPConnection(s);
@@ -51,7 +57,11 @@ public class KLALBClient {
 				}
 			}
 		});
-		tcpl.open();
+		tl.open();
+		tcpl.add(tl);
+		System.out.println(sel.name+"映射已启动 端口："+port+" 绑定地址："+bindip);
+	}
+	public void connectTunnel() {
 		for (int i = 0; i < tls.size(); i++) {
 			Tunnel tll=tls.get(i);
 			ThreadTool.makeVThreadIfSupport("隧道监视线程", ()->{
@@ -75,8 +85,10 @@ public class KLALBClient {
 						}
 						re=0;
 						System.out.println(tll+"：连接成功");
+						tll.setState(true);
 						iom.handleRemote(tc);
 						System.out.println(tll+"：连接断开");
+						tll.setState(false);
 					} catch (UnknownHostException e) {
 						e.printStackTrace();
 					}catch(ConnectException|SocketTimeoutException e) {
@@ -105,92 +117,16 @@ public class KLALBClient {
 	public List<ServiceElement> getServices() {
 		return services;
 	}
-	public void searchTunnels(String ipport) throws IOException {
+	public void close() {
-		IPPort u=new IPPort(ipport);
+		iom.close();
-		TCPConnection tcpc=null;
+		for (Iterator<TCPListener> iterator = tcpl.iterator(); iterator.hasNext();) {
-		try {
+			TCPListener tl = (TCPListener) iterator.next();
-		tcpc=new RemoteTCPConnection(null, new Socket(u.getIp(),u.getPort()));
+			tl.close();
-		tcpc.getDout().writeShort(59649);
-		tcpc.getDout().write(0);
-		tcpc.getDout().flush();
-		int s=tcpc.getDin().readInt();
-		System.out.println("服务列表：");
-		for (int i = 0; i < s; i++) {
-			String str=tcpc.getDin().readUTF();
-			System.out.println(str);
-			services.add(new ServiceElement(str));
-		}
-		int s2=tcpc.getDin().readInt();
-		System.out.println("隧道列表：");
-		for (int i = 0; i < s2; i++) {      
-			String str=tcpc.getDin().readUTF();
-			System.out.println(str);
-			tls.add(Tunnel.newTunnel(str));
-		}
-		}finally {
-			if(tcpc!=null) {
-				tcpc.close();
-			}
 		}
 	}
 	
-	public ServiceElement getSel() {
-		return sel;
-	}
-	public void setSel(ServiceElement sel) {
-		this.sel = sel;
-	}
-	public static void main(String[] args) throws IOException {
-		Scanner scn=new Scanner(System.in);
-		KLALBClient kc=new KLALBClient();
 
-		/*File f=new File("klalbc.ini");
-		if(!f.exists()) {
-			f.createNewFile();
-			return;
-		}
-		Scanner scn=new scan*/
-		System.out.println("请输入服务器任意一条线路的地址：");
-		kc.searchTunnels(scn.next());//"153.36.240.12:65529"
-		System.out.println("你想要连接哪个服务？请输入序号：");
-		kc.setSel(kc.getServices().get(scn.nextInt()));
-		System.out.println("请输入你要映射的本地端口：");
-		kc.open(scn.nextInt());
-		System.out.println("服务已开启");
-		while(true) {
-			String s=scn.next();
-			switch(s) {
-			case "states":
-				Tunnel.states();
-				break;
-			}
-		}
-	}
-	//Tunnel t=	new Tunnel("Test1", "127.0.0.1", 4569);
-			/*Tunnel t=	new Tunnel("Test1", "cn-hz-bgp-1.openfrp.top", 65529);
-			tls.add(t);
-			Tunnel t2=new Tunnel("Test2","cn-bj-bgp-3.openfrp.top",65529);
-			tls.add(t2);
-			Tunnel t3=new Tunnel("Test3","180.76.147.250",65529);
-			tls.add(t3);
-			Tunnel t4=new Tunnel("Test4","cn-sx-xa-bgp-1.openfrp.top",65529);
-			tls.add(t4);
-			*/
-	/*		List<Tunnel> tls=kc.getTls();
-			Tunnel t5=new Tunnel("Test5","la.afrps.cn",49966);
-			tls.add(t5);
-			Tunnel t6=new Tunnel("Test6","sg.afrps.cn",49966);
-			tls.add(t6);
-			Tunnel t7=new Tunnel("Test7","ch.afrps.cn",49966);
-			tls.add(t7);
-			Tunnel t8=new Tunnel("Test8","sj.afrps.cn",49966);
-			tls.add(t8);
-			Tunnel t9=new Tunnel("Test9","frp.104300.xyz",49965);
-			tls.add(t9);
 	
-			Tunnel t11=new Tunnel("Test11","153.36.240.12",65529);
+	
-			tls.add(t11);
-			Tunnel t12=new Tunnel("Test12","frp.freefrps.com",49965);
-			tls.add(t12);*/
 	
 }

src/org/kne/cloud/network/klalb/KLALBClientGUI.java

@@ -1,22 +1,293 @@
 package org.kne.cloud.network.klalb;
 
 import java.awt.Color;
+import java.awt.MenuItem;
+import java.awt.PopupMenu;
+import java.awt.SystemTray;
+import java.awt.TrayIcon;
+import java.awt.event.KeyEvent;
+import java.awt.event.KeyListener;
+import java.awt.image.BufferedImage;
+import java.io.File;
+import java.io.IOException;
+import java.net.BindException;
+import java.net.ConnectException;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+import java.util.Iterator;
+import java.util.List;
 
+import javax.imageio.ImageIO;
+import javax.swing.ImageIcon;
+import javax.swing.JComboBox;
+import javax.swing.JOptionPane;
+import javax.swing.UIManager;
+import javax.swing.plaf.TabbedPaneUI;
+import javax.swing.plaf.metal.MetalTabbedPaneUI;
+
+import org.kne.cloud.network.mport.ServiceElement;
+import org.kne.cloud.network.mport.ThreadTool;
+import org.kne.ui.KTabUI;
 import org.kne.ui.XFrame;
+import org.kne.ui.YScrollPane;
+import org.knemcl.ui.ProcessingFrame;
+import org.knemcl.ui.UIEnv;
 
-public class KLALBClientGUI extends XFrame{
+import java.awt.AWTException;
+import java.awt.BorderLayout;
+import javax.swing.JTabbedPane;
+import javax.swing.JPanel;
+import javax.swing.JPopupMenu;
+import javax.swing.JButton;
+import java.awt.event.ActionListener;
+import java.awt.event.ComponentEvent;
+import java.awt.event.ComponentListener;
+import java.awt.event.ItemEvent;
+import java.awt.event.ItemListener;
+import java.awt.event.ActionEvent;
+
+public class KLALBClientGUI extends XFrame {
+	private JComboBox comboBox;
+	BufferedImage bi;
+
+	private Thread t;
 	public KLALBClientGUI() {
 		setResizable(false);
-		setTitleColor(new Color(0,0,255,128));
+		setTitleColor(UIEnv.getDefaultTitleColor());
-		getContentPane().setBackground(new Color(128,128,255,128));
+		try {
+			bi = ImageIO.read(KLALBClientGUI.class.getResourceAsStream("/assets/KNEL.png"));
+		} catch (IOException e) {
+			e.printStackTrace();
+		}
+		setIconImage(bi);
+
+		getTitlelabel().setForeground(Color.WHITE);
+		getContentPane().setBackground(UIEnv.getDefaultTitleColor());
+
+		comboBox = new JComboBox();
+		comboBox.addItemListener(new ItemListener() {
+
+			@Override
+			public void itemStateChanged(ItemEvent e) {
+
+			}
+		});
+
+		reloadCB();
+
+	
+
+		YScrollPane ysp = new YScrollPane(580);
+		ysp.setOpaque(false);
+		getContentPane().add(ysp);
+		JPanel wv = ysp.getView();
+		wv.addComponentListener(new ComponentListener() {
+			
+			@Override
+			public void componentShown(ComponentEvent e) {
+				// TODO 自动生成的方法存根
+				
+			}
+			
+			@Override
+			public void componentResized(ComponentEvent e) {
+				// TODO 自动生成的方法存根
+				
+			}
+			
+			@Override
+			public void componentMoved(ComponentEvent e) {
+				repaint();
+			}
+			
+			@Override
+			public void componentHidden(ComponentEvent e) {
+				// TODO 自动生成的方法存根
+				
+			}
+		});
+		
+		JPanel panel_1 = new JPanel();
+		panel_1.setOpaque(false);
+		getContentPane().add(panel_1, BorderLayout.NORTH);
+		panel_1.setLayout(new BorderLayout(0, 0));
+		panel_1.add(comboBox, BorderLayout.CENTER);
+
+		JButton btnNewButton = new JButton("\u6DFB\u52A0");
+		btnNewButton.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				String s = JOptionPane.showInputDialog(KLALBClientGUI.this, "输入一条线路的地址");
+				if (s != null) {
+					if (s.equals("")) {
+						JOptionPane.showMessageDialog(KLALBClientGUI.this, "输入不能为空", "错误", JOptionPane.WARNING_MESSAGE);
+					} else {
+						ProcessingFrame psf = new ProcessingFrame("正在下载线路列表");
+						psf.setIconImage(bi);
+						psf.getProgressBar().setIndeterminate(true);
+						psf.setVisible(true);
+						ThreadTool.makeVThreadIfSupport("线路列表获取", () -> {
+							try {
+								KLALBIPList.createIPList(s);
+								reloadCB();
+							} catch (Exception e1) {
+								JOptionPane.showMessageDialog(KLALBClientGUI.this, e1.toString(), "错误",
+										JOptionPane.ERROR_MESSAGE);
+								e1.printStackTrace();
+							} finally {
+								psf.setVisible(false);
+							}
+						}).start();
+					}
+				}
+			}
+		});
+		panel_1.add(btnNewButton, BorderLayout.WEST);
+
+		JButton btnNewButton_1 = new JButton("\u542F\u52A8");
+		btnNewButton_1.setForeground(Color.GREEN);
+		btnNewButton_1.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent edf) {
+				if(t!=null) {
+					t.interrupt();
+					t=null;
+					return;
+				}
+				t=ThreadTool.makeVThreadIfSupport("客户端主线程", () -> {
+					btnNewButton_1.setEnabled(false);
+					comboBox.setEnabled(false);
+					String s = (String) comboBox.getSelectedItem();
+				
+				
+					
+					File pdis = KLALBIPList.getSLdir(s);
+					File f = new File(pdis, "iplist.json");
+					if (f.exists()) {
+						System.out.println("加载线路列表：" + f);
+						byte[] bytes;KLALBClient kc=null;
+						try {	
+						KLALBIPList.updateIPList(s);
+							bytes = Files.readAllBytes(Paths.get(f.toURI()));
+							STJson stj = new STJson(new String(bytes));
+							kc = new KLALBClient();
+							kc.getTls().addAll(stj.getTunnels());
+							List<Tunnel>lt=kc.getTls();
+							for (Iterator<Tunnel> iterator = lt.iterator(); iterator.hasNext();) {
+								Tunnel tunnel = (Tunnel) iterator.next();
+								TPanel tp=new TPanel(tunnel);
+								tp.getTname().setForeground(Color.RED);
+								wv.add(tp);
+								tunnel.setTlr(new TListener() {
+									
+									@Override
+									public void setDelay(long delay) {
+										tp.setDelay(delay);
+										repaint();
+									}
+
+									@Override
+									public void setState(boolean state) {
+										if(state) {
+											tp.getTname().setForeground(Color.GREEN);
+										}else {
+											tp.getTname().setForeground(Color.RED);
+										}
+										repaint();
+									}
+								});
+							}
+							ysp.updateUI();
+							ysp.repaint();
+							repaint();
+							kc.connectTunnel();
+							List<ServiceElement> lse = stj.getServices();
+							for (Iterator<ServiceElement> iterator = lse.iterator(); iterator.hasNext();) {
+								ServiceElement serviceElement = (ServiceElement) iterator.next();
+								ProxyIPPortProperties pippp = new ProxyIPPortProperties(pdis, serviceElement.name,
+										"127.0.0.1", serviceElement.ipport.getPort());
+								try {
+									kc.open(pippp.getBindPort(), serviceElement, pippp.getBindIP());
+								} catch (BindException e) {
+									System.out.println("打开端口失败：" + pippp.getBindIP() + " " + pippp.getBindPort());
+									e.printStackTrace();
+								}
+							}
+							btnNewButton_1.setForeground(Color.RED);
+							btnNewButton_1.setText("停止");
+							btnNewButton_1.setEnabled(true);
+							
+							while(true) {
+								Thread.sleep(999);
+							}
+							
+						} catch (ConnectException e) {
+							JOptionPane.showMessageDialog(KLALBClientGUI.this, e.getMessage(), "错误", JOptionPane.ERROR_MESSAGE);
+						} catch (IOException e) {
+							e.printStackTrace();
+						} catch (InterruptedException e) {
+						}finally {
+							if(kc!=null) {
+								kc.close();
+							}
+						}
+
+					} else {
+						System.out.println("线路列表不存在");
+					}
+					btnNewButton_1.setForeground(Color.GREEN);
+					btnNewButton_1.setText("启动");
+					btnNewButton_1.setEnabled(true);
+					comboBox.setEnabled(true);
+				});t.start();
+			}
+		});
+		panel_1.add(btnNewButton_1, BorderLayout.EAST);
 		setTitle("KNE云网络负载均衡客户端");
-		setSize(600,370);
+		setSize(600, 370);
 		setLocationRelativeTo(null);
+
 		setVisible(true);
+
+		if (SystemTray.isSupported()) {
+			SystemTray st = SystemTray.getSystemTray();
+			TrayIcon ti = new TrayIcon(bi);
+			ti.setImageAutoSize(true);
+			PopupMenu jpm = new PopupMenu();
+			MenuItem mi = new MenuItem("退出");
+			mi.addActionListener(new ActionListener() {
+
+				@Override
+				public void actionPerformed(ActionEvent e) {
+					System.exit(0);
+				}
+			});
+			jpm.add(mi);
+			ti.setPopupMenu(jpm);
+			try {
+				st.add(ti);
+			} catch (AWTException e1) {
+				e1.printStackTrace();
+			}
+			ti.addActionListener((x) -> {
+				setVisible(true);
+			});
+		}
+
+		repaint();
+	}
+
+	private void reloadCB() {
+		comboBox.removeAllItems();
+		File f = new File("KLALB");
+		f.mkdirs();
+		File[] fs = f.listFiles();
+		for (int i = 0; i < fs.length; i++) {
+			if (new File(fs[i], "iplist.json").exists()) {
+				comboBox.addItem(fs[i].getName());
+			}
+		}
 	}
 
 	public static void main(String[] args) {
 		new KLALBClientGUI();
 	}
-
 }

src/org/kne/cloud/network/klalb/KLALBCore.java

@@ -35,10 +35,9 @@ import java.util.function.Predicate;
 import org.kne.cloud.network.mport.ThreadTool;
 
 public class KLALBCore {
-	private static final UUID ZERO_UUID=new UUID(0,0);
 	private volatile int cacheblocks;
 	
-	private Map<UUID,LocalTCPConnection> localtcps = new ConcurrentHashMap<>();
+	private Map<Long,LocalTCPConnection> localtcps = new ConcurrentHashMap<>();
 	private List<RemoteTCPConnection> remotetcps = new Vector<>();
 	private Predicate<KLALBBlock>acceptSYN;
 	
@@ -82,7 +81,7 @@ public class KLALBCore {
 		this.acceptSYN = acceptSYN;
 	}
 
-	public Map<UUID, LocalTCPConnection> getLocaltcps() {
+	public Map<Long, LocalTCPConnection> getLocaltcps() {
 		return localtcps;
 	}
 
@@ -99,7 +98,7 @@ public class KLALBCore {
 			if(tc.checkPingTime()) {
 				KLALBBlock pdb=new KLALBBlock();
 				pdb.sn=0;
-				pdb.cuid=ZERO_UUID;
+				pdb.cuid=0;
 				pdb.number=0;
 				pdb.command=0;
 				pdb.pingtime=System.nanoTime();
@@ -142,12 +141,12 @@ public class KLALBCore {
 			}
 		}
 		} 
-		if(brc.cuid.equals(ZERO_UUID)) {
+		if(brc.cuid==0) {
 			if(brc.number==0) {
 				if(brc.command==0) {
 					KLALBBlock pdb=new KLALBBlock();
 					pdb.sn=0;
-					pdb.cuid=ZERO_UUID;
+					pdb.cuid=0;
 					pdb.number=0;
 					pdb.command=1;
 					pdb.pingtime=brc.pingtime;
@@ -244,9 +243,9 @@ public class KLALBCore {
 		while (!tc.getOutputcache().isEmpty()&&(tc.getOutputcount()-tc.getOutputcache().get(0).number>cacheblocks)) {
 			Thread.sleep(1);
 		}
-		submitDataBlock(ks);
 		ks.sendtime=System.nanoTime();
 		tc.getOutputcache().add(ks);
+		submitDataBlock(ks);
 		if(tc.getPeerCacheUsed()>cacheblocks) {
 		while(tc.getPeerCacheUsed()>cacheblocks) {
 			Thread.sleep(1);
@@ -263,7 +262,7 @@ public class KLALBCore {
 			for (int i = 0; i < l.size(); i++) {
 				KLALBBlock block=l.get(i);
 				long timex = (System.nanoTime() - block.sendtime) / 1000000;
-				if (timex > 200*(1<<Math.min(8,block.resend))+1000*i) {
+				if (timex > 100*(1<<Math.min(8,block.resend))+1000*i) {
 					submitDataBlock(block);
 					block.sendtime = System.nanoTime();
 					block.resend++;

src/org/kne/cloud/network/klalb/KLALBIPList.java

@@ -0,0 +1,65 @@
+package org.kne.cloud.network.klalb;
+
+import java.io.File;
+import java.io.IOException;
+import java.io.PrintStream;
+import java.net.ConnectException;
+import java.net.Socket;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+import java.util.Iterator;
+import java.util.List;
+
+import org.kne.cloud.network.mport.IPPort;
+
+public class KLALBIPList {
+	public static String searchTunnels(String ipport) throws IOException {
+		IPPort u=new IPPort(ipport);
+		TCPConnection tcpc=null;
+		try {
+		tcpc=new RemoteTCPConnection(null, new Socket(u.getIp(),u.getPort()));
+		tcpc.getDout().writeShort(59649);
+		tcpc.getDout().write(0);
+		tcpc.getDout().flush();
+		String json=tcpc.getDin().readUTF();
+		return json;
+		}finally {
+			if(tcpc!=null) {
+				tcpc.close();
+			}
+		}
+	}
+	public static File getSLdir(String name) {
+		File f=new File("./KLALB/"+name);
+		f.getParentFile().mkdirs();
+		return f;
+	}
+	public static void createIPList(String address) throws IOException {
+		String json=KLALBIPList.searchTunnels(address);
+		STJson stj=new STJson(json);
+		File f=new File(getSLdir(stj.getName()),"iplist.json");
+		System.out.println("线路列表已保存到："+f);
+		f.getParentFile().mkdirs();
+		f.createNewFile();
+		PrintStream ps=new PrintStream(f);
+		ps.print(json);
+		ps.close();
+	}
+	public static void updateIPList(String name) throws IOException {
+		File f=getSLdir(name);
+		File j=new File(f, "iplist.json");
+		byte[]bytes = Files.readAllBytes(Paths.get(j.toURI()));
+		STJson stj = new STJson(new String(bytes));
+		List<Tunnel> l=stj.getTunnels();
+		for (Iterator iterator = l.iterator(); iterator.hasNext();) {
+			Tunnel tunnel = (Tunnel) iterator.next();
+			try{
+			createIPList(tunnel.getIpport().toString());
+			return;
+			}catch(IOException e) {
+				e.printStackTrace();
+			}
+		}
+		throw new ConnectException("搜索地址失败");
+	}
+}

src/org/kne/cloud/network/klalb/KLALBSM.java

@@ -2,117 +2,52 @@ package org.kne.cloud.network.klalb;
 
 import java.io.File;
 import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
+import java.nio.file.Paths;
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.Properties;
 import java.util.Scanner;
+import java.util.function.Supplier;
 
 import org.kne.cloud.network.mport.ServiceElement;
 
 public class KLALBSM {
-	public static Map<String, ServiceElement> services=new HashMap<String, ServiceElement>();
-
-	public static List<Tunnel> tunnels=new ArrayList<Tunnel>();
 	public static void main(String[] args) throws IOException {
-		File f=new File("klalbs.ini");
-		if(!f.exists()) {
-			f.createNewFile();
-			ept();
-			return;
-		}
-		if(f.length()<=0) {
-			ept();
-			return;
-		}
-		Scanner scn=new Scanner(f);
-		int remp=scn.nextInt();
 		System.out.println("KNE云负载均衡调度软件服务端V0.1");
-		System.out.println("开放端口："+remp);
+		ServerPropties sp=new ServerPropties();
-		int x=0;
-		System.out.println("服务列表：");
-		while(scn.hasNext()	) {
-			String s=scn.next();
-			if(">".equals(s)) {
-				x++;
-				System.out.println("隧道列表：");
-				continue;
-			}
-			switch(x) {
-			case 0:
-			ServiceElement se=new ServiceElement(s);
-			System.out.println(se);
-			services.put(se.proc,se);
-			break;
-			case 1:
-				Tunnel t=Tunnel.newTunnel(s);
-				System.out.println(t);
-				tunnels.add(t);
-				break;
-			}
 		
+		int remp=sp.getPort();
+		System.out.println("开放端口："+remp);
+		new KLALBServer(remp,new Supplier<String>() {
+			
+			@Override
+			public String get() {
+				String sj="";
+				 byte[] bytes;
+				try {
+					bytes = Files.readAllBytes(Paths.get("klalbs.json"));
+				  sj = new String(bytes);
+				   }catch (IOException e) {
+					e.printStackTrace();
 				}
-		scn.close();
+				return sj; 
-		new KLALBServer(remp,services,tunnels);
+			}
+		});
 		System.out.println("提示：运行时输入reload可以重新加载配置文件，已经建立的TCP连接不受影响(暂不支持修改开放端口)");
 		Scanner scn2=new Scanner(System.in);
 		while(true) {
 			String command=scn2.next();
 			switch(command) {
 			case "reload":
-				synchronized (services) {
-					synchronized(tunnels) {
-					 scn=new Scanner(f);
-					services.clear();
-					tunnels.clear();
-					 remp=scn.nextInt();
-					 x=0;
-					 System.out.println("服务列表：");
-						while(scn.hasNext()	) {
-							String s=scn.next();
-							if(">".equals(s)) {
-								x++;
-								System.out.println("隧道列表：");
-								continue;
-							}
-							switch(x) {
-							case 0:
-							ServiceElement se=new ServiceElement(s);
-							System.out.println(se);
-							services.put(se.proc,se);
-							break;
-							case 1:
-								Tunnel t=Tunnel.newTunnel(s);
-								System.out.println(t);
-								tunnels.add(t);
-								break;
-							}
 				
-						}
-					scn.close();
-				}
-				}
 				break;
 			}
 		}
 	}
 
-	private static void ept() {
-		System.out.println("请填写配置文件后再启动程序!");
-		System.out.println("格式：");
-		System.out.println("开放端口");
-		System.out.println("服务协议1$服务地址1$服务端口1");
-		System.out.println("服务协议2$服务地址2$服务端口2");
-		System.out.println("......");
-		System.out.println("服务协议n$服务地址n$服务端口n");
-		System.out.println(">");
-		System.out.println("隧道名称1$隧道地址1$隧道端口1");
-		System.out.println("隧道名称2$隧道地址2$隧道端口2");
-		System.out.println("......");
-		System.out.println("隧道名称n$隧道地址n$隧道端口n");
-		System.out.println("");
-		System.out.println("按照顺序从上向下匹配，若都不是则匹配最后一个");
-	}
 
 }

src/org/kne/cloud/network/klalb/KLALBServer.java

@@ -13,6 +13,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.UUID;
 import java.util.WeakHashMap;
+import java.util.function.Supplier;
 
 import org.kne.cloud.network.mport.IPPort;
 import org.kne.cloud.network.mport.ServiceElement;
@@ -21,7 +22,7 @@ import org.kne.cloud.network.mport.ThreadTool;
 public class KLALBServer {
 	
 	WeakHashMap<UUID, IOThreadManager> whm=new WeakHashMap<>();
-	public KLALBServer(int port, Map<String,ServiceElement> services,List<Tunnel> tunnels) throws IOException {
+	public KLALBServer(int port,Supplier<String> gjso) throws IOException {
 		TCPListener tcpl=new TCPListener(port);
 		tcpl.setCon((s)->{
 			RemoteTCPConnection tcc=null;
@@ -35,21 +36,8 @@ public class KLALBServer {
 				}
 				int x=din.read();
 				if(x==0) {
-					 synchronized (services) {
+					String sj=gjso.get();
-						 tcc.getDout().writeInt(services.size());
+					tcc.getDout().writeUTF(sj);
-						 Collection<ServiceElement> cll=services.values();
-						 for (Iterator<ServiceElement> iterator = cll.iterator(); iterator.hasNext();) {
-							ServiceElement tunnel =  iterator.next();
-							tcc.getDout().writeUTF(tunnel.toString());
-						}
-					}
-					 synchronized (tunnels) {
-							int counts=tunnels.size();
-							tcc.getDout().writeInt(counts);
-							for (int i = 0; i < counts; i++) {
-								tcc.getDout().writeUTF(tunnels.get(i).toString());
-							}
-						}
 					 tcc.getDout().flush();
 				return;	
 				}
@@ -57,7 +45,7 @@ public class KLALBServer {
 				String name = din.readUTF();
 				String ip = din.readUTF();
 				int portx=din.readInt();
-				Tunnel tll=Tunnel.newTunnel(name, ip, portx);
+				Tunnel tll=new Tunnel(name,new IPPort( ip, portx));
 				tcc.setTunnel(tll);
 				
 				UUID uid=new UUID(din.readLong(),din.readLong());

src/org/kne/cloud/network/klalb/LocalTCPConnection.java

@@ -5,12 +5,15 @@ import java.net.Socket;
 import java.util.*;
 import java.util.concurrent.BlockingDeque;
 import java.util.concurrent.LinkedBlockingDeque;
+import java.util.concurrent.atomic.AtomicLong;
 import java.util.function.Consumer;
 
 import org.kne.cloud.network.mport.ServiceElement;
 
 public class LocalTCPConnection extends TCPConnection {
-private UUID cuid;
+	private static AtomicLong sng=new AtomicLong(1);
+	
+private long cuid;
 private ServiceElement serviceElement;
 
 
@@ -21,16 +24,16 @@ private volatile long inputcount = 1;
 private volatile long outputcount = 1;
 	public LocalTCPConnection(Socket s) throws IOException {
 		super(s);
-		cuid=UUID.randomUUID();
+		cuid=sng.getAndIncrement();
 	}
-	public LocalTCPConnection(Socket s,UUID uid) throws IOException {
+	public LocalTCPConnection(Socket s,long uid) throws IOException {
 		super(s);
 		cuid=uid;
 	}
-	public UUID getCuid() {
+	public long getCuid() {
 		return cuid;
 	}
-	public void setCuid(UUID cuid) {
+	public void setCuid(long cuid) {
 		this.cuid = cuid;
 	}
 	public ServiceElement getServiceElement() {

src/org/kne/cloud/network/klalb/OutputMetre.java

@@ -0,0 +1,43 @@
+package org.kne.cloud.network.klalb;
+
+import java.io.IOException;
+import java.io.OutputStream;
+import java.util.concurrent.atomic.AtomicLong;
+
+public class OutputMetre extends OutputStream {
+
+	private OutputStream out;
+	private AtomicLong total=new AtomicLong(0);
+	public OutputMetre(OutputStream outputStream) {
+		this.out=outputStream;
+	}
+
+	@Override
+	public void write(int b) throws IOException {
+		out.write(b);
+		total.incrementAndGet();
+	}
+
+	@Override
+	public void write(byte[] b) throws IOException {
+		out.write(b);
+		total.addAndGet(b.length);
+	}
+
+	@Override
+	public void write(byte[] b, int off, int len) throws IOException {
+		out.write(b, off, len);
+		total.addAndGet(len);
+	}
+
+	@Override
+	public void flush() throws IOException {
+		out.flush();
+	}
+
+	@Override
+	public void close() throws IOException {
+		out.close();
+	}
+
+}

src/org/kne/cloud/network/klalb/ProxyIPPortProperties.java

@@ -0,0 +1,42 @@
+package org.kne.cloud.network.klalb;
+
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.FileReader;
+import java.io.IOException;
+import java.io.PrintStream;
+import java.net.InetAddress;
+import java.util.Properties;
+
+import org.kne.cloud.network.mport.ServiceElement;
+
+public class ProxyIPPortProperties extends Properties{
+	public ProxyIPPortProperties(File location ,String name,String dip,int dport) throws FileNotFoundException, IOException {
+		File f=new File(location,name+".json");
+		if(!f.exists()||f.length()==0) {
+			f.createNewFile();
+			PrintStream ps=new PrintStream(f);
+			ps.println("bindport="+dport);
+			ps.println("bindip="+dip);
+			ps.close();
+		}
+		FileReader fr = null;
+		try {
+		fr=new FileReader(f);
+		load(fr);
+		}finally {
+			if(fr!=null)
+				fr.close();
+		}
+	}
+
+	public int getBindPort() {
+		
+		return Integer.parseInt((String) get("bindport"));
+	}
+
+	public String getBindIP() {
+		return (String) get("bindip");
+	}
+	
+}

src/org/kne/cloud/network/klalb/RemoteTCPConnection.java

@@ -1,5 +1,7 @@
 package org.kne.cloud.network.klalb;
 
+import java.io.DataInputStream;
+import java.io.DataOutputStream;
 import java.io.IOException;
 import java.net.Socket;
 import java.net.UnknownHostException;
@@ -15,6 +17,12 @@ public class RemoteTCPConnection extends TCPConnection {
 		this(t, t.connectClientSocket());
 	}
 	
+	@Override
+	protected void initIO() throws IOException {
+		dout = new DataOutputStream(new OutputMetre( connect.getOutputStream()));
+		din = new DataInputStream(new InputMetre(connect.getInputStream()));
+	}
+
 	public RemoteTCPConnection(Tunnel t, Socket s) throws UnknownHostException, IOException {
 		super(s);
 		this.tunnel = t;
@@ -47,8 +55,7 @@ public class RemoteTCPConnection extends TCPConnection {
 	public void sendBlock(KLALBBlock data) throws IOException {
 		dout.writeLong(data.sn);
 		if(data.sn!=0) {
-		dout.writeLong(data.cuid.getMostSignificantBits());
+		dout.writeLong(data.cuid);
-		dout.writeLong(data.cuid.getLeastSignificantBits());
 		}
 		dout.writeLong(data.number);
 		if (data.number > 0) {
@@ -83,9 +90,9 @@ public class RemoteTCPConnection extends TCPConnection {
 		KLALBBlock klb = new KLALBBlock();
 		klb.sn = din.readLong();
 		if(klb.sn!=0) {
-		klb.cuid = new UUID(din.readLong(), din.readLong());
+		klb.cuid = din.readLong();
 		}else {
-			klb.cuid=new UUID(0,0);
+			klb.cuid=0;
 		}
 		klb.number = din.readLong();
 		if (klb.number > 0) {

src/org/kne/cloud/network/klalb/STJson.java

@@ -0,0 +1,84 @@
+package org.kne.cloud.network.klalb;
+
+import java.io.IOException;
+import java.io.StringReader;
+import java.util.*;
+
+import org.kne.cloud.network.mport.IPPort;
+import org.kne.cloud.network.mport.ServiceElement;
+
+import com.google.gson.stream.JsonReader;
+
+public class STJson {
+	private String name;
+	private List<ServiceElement> services=new ArrayList<>();
+	private List<Tunnel> tunnels=new ArrayList<>();
+	public List<ServiceElement> getServices() {
+		return services;
+	}
+
+	public List<Tunnel> getTunnels() {
+		return tunnels;
+	}
+
+	public STJson(String json) throws IOException {
+		JsonReader sr = new JsonReader(new StringReader(json));
+			sr.beginObject();
+
+			while (sr.hasNext()) {
+				String n = sr.nextName();
+				if (n.equals("name")) {
+					name = sr.nextString();
+				} else if (n.equals("services")) {
+					sr.beginArray();
+					while (sr.hasNext()) { 
+						sr.beginObject();
+						ServiceElement se=new ServiceElement();
+						while (sr.hasNext()) {
+							String n2 = sr.nextName();
+							if (n2.equals("name")) {
+								se.name=sr.nextString();
+							} else if (n2.equals("protocol")) {
+								se.protocol=sr.nextString();
+							} else if (n2.equals("localaddress")) {
+								se.ipport=new IPPort( sr.nextString());
+							} else{
+								sr.skipValue();
+							}
+						}
+						services .add(se);
+						sr.endObject();
+					}
+					sr.endArray();
+				} else if (n.equals("tunnels")) {
+					sr.beginArray();
+					while (sr.hasNext()) {
+						sr.beginObject();
+					Tunnel t=new Tunnel();
+					while (sr.hasNext()) {
+						String n2 = sr.nextName();
+						if (n2.equals("name")) {
+							t.setName(sr.nextString());
+						} else  if (n2.equals("remoteaddress")) {
+							t.setIpport(new IPPort( sr.nextString()));
+						} else{
+							sr.skipValue();
+						}
+					}
+						tunnels.add(t);
+						sr.endObject();
+					}
+					sr.endArray();
+				} else {
+					sr.skipValue();
+				}
+			}
+			sr.endObject();
+		
+	}
+
+	public String getName() {
+		return name;
+	}
+
+}

src/org/kne/cloud/network/klalb/ServerPropties.java

@@ -0,0 +1,36 @@
+package org.kne.cloud.network.klalb;
+
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.FileReader;
+import java.io.IOException;
+import java.io.PrintStream;
+import java.util.Properties;
+
+public class ServerPropties extends Properties {
+	
+	public ServerPropties() throws IOException {
+		super();
+		load();
+	}
+	public void load() throws IOException {
+		File f=new File("kserver.ini");
+		if(!f.exists()||f.length()==0) {
+			f.createNewFile();
+			PrintStream ps=new PrintStream(f);
+			ps.println("port=4569");
+			ps.close();
+		}
+		FileReader fr = null;
+		try {
+		fr=new FileReader(f);
+		load(fr);
+		}finally {
+			if(fr!=null)
+				fr.close();
+		}
+	}
+	public int getPort() {
+		return Integer.parseInt( (String) get("port"));
+	}
+}

src/org/kne/cloud/network/klalb/TCPConnection.java

@@ -15,7 +15,7 @@ public class TCPConnection {
 
 
 
-	private Socket connect;
+	protected Socket connect;
 	protected DataInputStream din;
 	protected DataOutputStream dout;
 

src/org/kne/cloud/network/klalb/TCPListener.java

@@ -1,6 +1,7 @@
 package org.kne.cloud.network.klalb;
 
 import java.io.IOException;
+import java.net.InetSocketAddress;
 import java.net.ServerSocket;
 import java.net.Socket;
 import java.util.function.Consumer;
@@ -10,6 +11,7 @@ import org.kne.cloud.network.mport.ThreadTool;
 public class TCPListener {
 	private int port;
 	private ServerSocket servers;
+	private String bind;
 	private volatile boolean flag=false;
 	
 	private Consumer<Socket>con;
@@ -31,10 +33,19 @@ public class TCPListener {
 	public TCPListener(int port) throws IOException {
 		this.port=port;
 	}
+	public TCPListener(int port,String bind) throws IOException {
+		this.port=port;
+		this.bind=bind;
+	}
 	
 	public void open() throws IOException {
 		flag=true;
+		if(bind==null) {
 		servers=new ServerSocket(port);
+		}else {
+			servers=new ServerSocket();
+			servers.bind(new InetSocketAddress(bind, port));
+		}
 		new Thread(r).start();
 	}
 	public void close() {

src/org/kne/cloud/network/klalb/TListener.java

@@ -0,0 +1,9 @@
+package org.kne.cloud.network.klalb;
+
+public interface TListener {
+
+	void setDelay(long delay);
+
+	void setState(boolean state);
+
+}

src/org/kne/cloud/network/klalb/TPanel.java

@@ -0,0 +1,72 @@
+package org.kne.cloud.network.klalb;
+
+import javax.swing.JPanel;
+import javax.swing.JLabel;
+import java.awt.BorderLayout;
+import java.awt.Color;
+
+import javax.swing.SwingConstants;
+import javax.swing.border.LineBorder;
+import java.awt.Font;
+
+public class TPanel extends JPanel{
+	private JLabel tname;
+	private JLabel targ;
+	private Tunnel tunnel;
+
+	public JLabel getTname() {
+		return tname;
+	}
+	public JLabel getTarg() {
+		return targ;
+	}
+	public TPanel (Tunnel t) {
+		this(t.getName());
+		this.tunnel=t;
+	}
+	/**
+	 * @wbp.parser.constructor
+	 */
+	public TPanel(String name) {
+		setOpaque(false);
+		setLayout(new BorderLayout(0, 0));
+		
+		tname = new JLabel(name);
+		tname.setFont(new Font("ËÎÌå", Font.BOLD, 20));
+		add(tname, BorderLayout.WEST);
+		
+		targ = new JLabel();
+		targ.setFont(new Font("ËÎÌå", Font.PLAIN, 14));
+		targ.setHorizontalAlignment(SwingConstants.TRAILING);
+		targ.setForeground(Color.YELLOW);
+		add(targ, BorderLayout.CENTER);
+		
+		setBorder(new LineBorder(Color.BLACK));
+		setSize(570, 30);
+		setPreferredSize(getSize());
+	}
+	private long up,down,delay;
+
+	public long getUp() {
+		return up;
+	}
+	public void setUp(long up) {
+		this.up = up;
+		targ.setText(up+"\u2191 "+down+"\u2193 "+delay/1000000+"ms");
+	}
+	public long getDown() {
+		return down;
+	}
+	public void setDown(long down) {
+		this.down = down;
+		targ.setText(up+"\u2191 "+down+"\u2193 "+delay/1000000+"ms");
+	}
+	public long getDelay() {
+		return delay;
+	}
+	public void setDelay(long delay) {
+		this.delay = delay;
+		targ.setText(up+"\u2191 "+down+"\u2193 "+delay/1000000+"ms");
+	}
+	
+}

src/org/kne/cloud/network/klalb/Tunnel.java

@@ -17,74 +17,79 @@ import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.atomic.AtomicInteger;
 
 import javax.naming.spi.Resolver;
+import javax.swing.JPanel;
 
 import org.kne.cloud.network.mport.IPPort;
 
-public class Tunnel {
+public class Tunnel{
 	private String name;
 	private IPPort ipport;
+	private boolean state=false;
+	
+	private TListener tlr;
+	
+	public boolean isState() {
+		return state;
+	}
+	public void setState(boolean state) {
+		this.state = state;
+		if(tlr!=null) {
+			tlr.setState(state);
+		}
+	}
 	public IPPort getIpport() {
 		return ipport;
 	}
 	private long delay=Long.MAX_VALUE;
+	public TListener getTlr() {
+		return tlr;
+	}
+	public void setTlr(TListener tlr) {
+		this.tlr = tlr;
+	}
 	public long getDelay() {
 		return delay;
 	}
 	public void setDelay(long delay) {
 		this.delay = delay;
+		if(tlr!=null)
+		tlr.setDelay(delay);
 	}
-	private static Map<IPPort,Tunnel> tls=new ConcurrentHashMap<>();
+
-	private Tunnel(String name, IPPort ipport) throws UnknownHostException {
+	public Tunnel() {
+		
+	}
+	
+	
+	public Tunnel(String name, IPPort ipport) {
 		super();
 		this.name = name;
-		this.ipport=ipport;
+		this.ipport = ipport;
-	}
-	public static Tunnel newTunnel(String name, IPPort ipport) throws UnknownHostException {
-		Tunnel tmp=tls.get(ipport);
-		if(tmp!=null) {
-			return tmp;
-		}
-		tmp=new Tunnel(name, ipport);
-		tls.put(ipport, tmp);
-		return tmp;
-	}
-	public static Tunnel newTunnel(String name, String ipport) throws UnknownHostException {
-		
-		return newTunnel(name, new IPPort(ipport));
-	}
-	public static Tunnel newTunnel(String name, String ip, int port) throws UnknownHostException {
-		
-		return newTunnel(name, new IPPort(ip, port));
-	}
-	
-	public static Tunnel newTunnel(String s) throws UnknownHostException {
-		String[]t=s.split("\\$");
-		return newTunnel(t[0], t[1]);
 	}
 	public String getName() {
 		return name;
 	}
 
 	public String getIp() {
-		return ipport.getIp().getHostAddress();
+		return getIpport().getIp().getHostAddress();
 	}
 	public int getPort() {
-		return ipport.getPort();
+		return getIpport().getPort();
 	}
 	
 	@Override
 	public String toString() {
-		return name+"$"+ipport;
+		return getName()+"$"+getIpport();
 	}
 	public Socket connectClientSocket() throws UnknownHostException, IOException {
 		Socket socket=new Socket();
-		socket.connect(ipport.getSocketAddress(), 10000);
+		socket.connect(getIpport().getSocketAddress(), 10000);
 		return socket;
 	}
 	
 	@Override
 	public int hashCode() {
-		return Objects.hash(ipport, name);
+		return Objects.hash(getIpport(), getName());
 	}
 	@Override
 	public boolean equals(Object obj) {
@@ -95,20 +100,19 @@ public class Tunnel {
 		if (getClass() != obj.getClass())
 			return false;
 		Tunnel other = (Tunnel) obj;
-		return Objects.equals(ipport, other.ipport) && Objects.equals(name, other.name);
+		return Objects.equals(getIpport(), other.getIpport()) && Objects.equals(getName(), other.getName());
-	}
-	public static void states() {
-		Set<Entry<IPPort, Tunnel>>  s=tls.entrySet();
-		for (Iterator iterator = s.iterator(); iterator.hasNext();) {
-			Entry<IPPort, Tunnel> entry = (Entry<IPPort, Tunnel>) iterator.next();
-			Tunnel tll=entry.getValue();
-			System.out.println(tll.getName()+" "+((tll.getDelay()==Long.MAX_VALUE)?"δ֪":tll.getDelay()/1000000+"ms")+" Á¬½ÓÊý"+tll.ati);
-		}
 	}
+	
 	private AtomicInteger ati=new AtomicInteger(0);
 	public AtomicInteger getCCount() {
 		return ati;
 	}
+	public void setName(String name) {
+		this.name = name;
+	}
+	public void setIpport(IPPort ipport) {
+		this.ipport = ipport;
+	}
 	
 	
 }

src/org/kne/cloud/network/mport/PortRelay.java

@@ -38,7 +38,7 @@ public class PortRelay {
 			se = ServiceElement.getbyproc(services, n);
 			InetSocketAddress sa=(InetSocketAddress) s.getRemoteSocketAddress();
 			System.out.println(sa.getAddress().getHostAddress() + ":" + port
-					+ "-" + se.proc + "(" + n + ")->" + se.ipport.getIp().getHostAddress() + ":" + se.ipport.getPort());
+					+ "-" + se.protocol + "(" + n + ")->" + se.ipport.getIp().getHostAddress() + ":" + se.ipport.getPort());
 			sl.connect(new InetSocketAddress(se.ipport.getIp().getHostAddress(), se.ipport.getPort()));
 			final DataInputStream xdinl=new DataInputStream(sl.getInputStream());
 			dinl=xdinl;

src/org/kne/cloud/network/mport/ServiceElement.java

@@ -24,23 +24,27 @@ public class ServiceElement {
 		procs.put(21586, "HTTP");
 		procs.put(20545, "HTTP");
 	}
-	public String proc;
+	public String name;
+	public String protocol;
 	public IPPort ipport;
 	public ServiceElement(String ini) throws UnknownHostException {
 		String[]t=ini.split("\\$");
 		if(t.length==1) {
-			proc="";
+			protocol="";
 			ipport=new IPPort(t[0]);
 		}else {
-			proc=t[0];
+			protocol=t[0];
 			ipport=new IPPort(t[1]);
 		}
 	}
+	public ServiceElement() {
+		// TODO 自动生成的构造函数存根
+	}
 	@Override
 	public String toString() {
-		if(proc.isEmpty())
+		if(protocol.isEmpty())
 		return ipport.toString();
-		return proc+"$"+ipport;
+		return protocol+"$"+ipport;
 	}
 	public static ServiceElement getbyproc(List<ServiceElement> services, int n) {
 		String proc=procs.get(n);
@@ -49,7 +53,7 @@ public class ServiceElement {
 		Iterator<ServiceElement>sei=services.iterator();
 		while (sei.hasNext()) {
 			ServiceElement serviceElement = (ServiceElement) sei.next();
-			if(serviceElement.proc.isEmpty()||serviceElement.proc.equals(proc))
+			if(serviceElement.protocol.isEmpty()||serviceElement.protocol.equals(proc))
 				return serviceElement;
 		}
 		}