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streamline rebased Gson into source; rebase was done to prevent conflict with other plugins (like upcoming WorldGuard release) which also use Gson; Bukkit doesn't yet handle such conflicts properly

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This commit is contained in:
Brettflan 2011-03-04 10:46:41 -06:00
parent df75afef08
commit 986461a098
96 changed files with 11699 additions and 7 deletions
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2
MANIFEST.MF
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@ -1,3 +1 @@
Manifest-Version: 1.0
Class-Path: ../gson.jar

5
src/com/bukkit/mcteam/factions/entities/EM.java
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@ -10,7 +10,7 @@ import org.bukkit.entity.Player;
import com.bukkit.mcteam.factions.Factions;
import com.bukkit.mcteam.factions.util.*;
import com.bukkit.mcteam.util.DiscUtil;
import com.google.gson.*;
import com.bukkit.mcteam.gson.*;
/**
* This is a entity manager that persists object to json.
@ -125,6 +125,7 @@ public class EM {
folderBoard.mkdirs();
class jsonFileFilter implements FileFilter {
@Override
public boolean accept(File file) {
return (file.getName().toLowerCase().endsWith(ext) && file.isFile());
}
@ -204,6 +205,7 @@ public class EM {
folderFollower.mkdirs();
class jsonFileFilter implements FileFilter {
@Override
public boolean accept(File file) {
return (file.getName().toLowerCase().endsWith(ext) && file.isFile());
}
@ -292,6 +294,7 @@ public class EM {
class jsonFileFilter implements FileFilter
{
@Override
public boolean accept(File file) {
return (file.getName().toLowerCase().endsWith(ext) && file.isFile());
}

39
src/com/bukkit/mcteam/gson/AnonymousAndLocalClassExclusionStrategy.java Normal file
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@ -0,0 +1,39 @@
/*
* 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.bukkit.mcteam.gson;
/**
* Strategy for excluding anonymous and local classes.
*
* @author Joel Leitch
*/
final class AnonymousAndLocalClassExclusionStrategy implements ExclusionStrategy {
public boolean shouldSkipField(FieldAttributes f) {
return isAnonymousOrLocal(f.getDeclaredClass());
}
public boolean shouldSkipClass(Class<?> clazz) {
return isAnonymousOrLocal(clazz);
}
private boolean isAnonymousOrLocal(Class<?> clazz) {
return !Enum.class.isAssignableFrom(clazz)
&& (clazz.isAnonymousClass() || clazz.isLocalClass());
}
}

61
src/com/bukkit/mcteam/gson/Cache.java Normal file
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@ -0,0 +1,61 @@
/*
* 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.bukkit.mcteam.gson;
/**
* Defines generic cache interface.
*
* @author Inderjeet Singh
* @author Joel Leitch
*/
interface Cache<K, V> {
/**
* Adds the new value object into the cache for the given key. If the key already
* exists, then this method will override the value for the key.
*
* @param key the key identifier for the {@code value} object
* @param value the value object to store in the cache
*/
void addElement(K key, V value);
/**
* Retrieve the cached value for the given {@code key}.
*
* @param key the key identifying the value
* @return the cached value for the given {@code key}
*/
V getElement(K key);
/**
* Removes the value from the cache for the given key.
*
* @param key the key identifying the value to remove
* @return the value for the given {@code key}
*/
V removeElement(K key);
/**
* Removes everything from this cache.
*/
void clear();
/**
* @return the number of objects in this cache
*/
int size();
}

73
src/com/bukkit/mcteam/gson/CamelCaseSeparatorNamingPolicy.java Normal file
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@ -0,0 +1,73 @@
/*
* 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.bukkit.mcteam.gson;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.util.Collection;
/**
* Converts the field name that uses camel-case define word separation into separate words that
* are separated by the provided {@code separatorString}.
*
* <p>The following is an example:</p>
* <pre>
* class IntWrapper {
* public int integerField = 0;
* }
*
* CamelCaseSeparatorNamingPolicy policy = new CamelCaseSeparatorNamingPolicy("_");
* String translatedFieldName =
* policy.translateName(IntWrapper.class.getField("integerField"));
*
* assert("integer_Field".equals(translatedFieldName));
* </pre>
*
* @author Joel Leitch
*/
final class CamelCaseSeparatorNamingPolicy extends RecursiveFieldNamingPolicy {
private final String separatorString;
/**
* Constructs a new CamelCaseSeparatorNamingPolicy object that will add the
* {@code separatorString} between each of the words separated by camel case.
*
* @param separatorString the string value to place between words
* @throws IllegalArgumentException thrown if the {@code separatorString} parameter
* is null or empty.
*/
public CamelCaseSeparatorNamingPolicy(String separatorString) {
Preconditions.checkNotNull(separatorString);
Preconditions.checkArgument(!"".equals(separatorString));
this.separatorString = separatorString;
}
@Override
protected String translateName(String target, Type fieldType,
Collection<Annotation> annnotations) {
StringBuilder translation = new StringBuilder();
for (int i = 0; i < target.length(); i++) {
char character = target.charAt(i);
if (Character.isUpperCase(character) && translation.length() != 0) {
translation.append(separatorString);
}
translation.append(character);
}
return translation.toString();
}
}

45
src/com/bukkit/mcteam/gson/CircularReferenceException.java Normal file
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@ -0,0 +1,45 @@
/*
* 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.bukkit.mcteam.gson;
/**
* Exception class to indicate a circular reference error.
* This class is not part of the public API and hence is not public.
*
* @author Inderjeet Singh
* @author Joel Leitch
*/
final class CircularReferenceException extends RuntimeException {
private static final long serialVersionUID = 7444343294106513081L;
private final Object offendingNode;
CircularReferenceException(Object offendingNode) {
super("circular reference error");
this.offendingNode = offendingNode;
}
public IllegalStateException createDetailedException(FieldAttributes offendingField) {
StringBuilder msg = new StringBuilder(getMessage());
if (offendingField != null) {
msg.append("\n ").append("Offending field: ").append(offendingField.getName() + "\n");
}
if (offendingNode != null) {
msg.append("\n ").append("Offending object: ").append(offendingNode);
}
return new IllegalStateException(msg.toString(), this);
}
}

46
src/com/bukkit/mcteam/gson/CompositionFieldNamingPolicy.java Normal file
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@ -0,0 +1,46 @@
/*
* 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.bukkit.mcteam.gson;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.util.Collection;
/**
* Performs numerous field naming translations wrapped up as one object.
*
* @author Joel Leitch
*/
abstract class CompositionFieldNamingPolicy extends RecursiveFieldNamingPolicy {
private final RecursiveFieldNamingPolicy[] fieldPolicies;
public CompositionFieldNamingPolicy(RecursiveFieldNamingPolicy... fieldNamingPolicies) {
if (fieldNamingPolicies == null) {
throw new NullPointerException("naming policies can not be null.");
}
this.fieldPolicies = fieldNamingPolicies;
}
@Override
protected String translateName(String target, Type fieldType, Collection<Annotation> annotations) {
for (RecursiveFieldNamingPolicy policy : fieldPolicies) {
target = policy.translateName(target, fieldType, annotations);
}
return target;
}
}

893
src/com/bukkit/mcteam/gson/DefaultTypeAdapters.java Normal file
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@ -0,0 +1,893 @@
/*
* 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.bukkit.mcteam.gson;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.net.MalformedURLException;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;
import java.sql.Time;
import java.sql.Timestamp;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Collection;
import java.util.Date;
import java.util.GregorianCalendar;
import java.util.HashSet;
import java.util.LinkedHashMap;
import java.util.LinkedList;
import java.util.Locale;
import java.util.Map;
import java.util.Properties;
import java.util.Set;
import java.util.SortedSet;
import java.util.StringTokenizer;
import java.util.TreeSet;
import java.util.UUID;
/**
* List of all the default type adapters ({@link JsonSerializer}s, {@link JsonDeserializer}s,
* and {@link InstanceCreator}s.
*
* @author Inderjeet Singh
* @author Joel Leitch
*/
final class DefaultTypeAdapters {
private static final DefaultDateTypeAdapter DATE_TYPE_ADAPTER = new DefaultDateTypeAdapter();
private static final DefaultJavaSqlDateTypeAdapter JAVA_SQL_DATE_TYPE_ADAPTER =
new DefaultJavaSqlDateTypeAdapter();
private static final DefaultTimeTypeAdapter TIME_TYPE_ADAPTER =
new DefaultTimeTypeAdapter();
private static final DefaultTimestampDeserializer TIMESTAMP_DESERIALIZER =
new DefaultTimestampDeserializer();
@SuppressWarnings("rawtypes")
private static final EnumTypeAdapter ENUM_TYPE_ADAPTER = new EnumTypeAdapter();
private static final UrlTypeAdapter URL_TYPE_ADAPTER = new UrlTypeAdapter();
private static final UriTypeAdapter URI_TYPE_ADAPTER = new UriTypeAdapter();
private static final UuidTypeAdapter UUUID_TYPE_ADAPTER = new UuidTypeAdapter();
private static final LocaleTypeAdapter LOCALE_TYPE_ADAPTER = new LocaleTypeAdapter();
private static final CollectionTypeAdapter COLLECTION_TYPE_ADAPTER = new CollectionTypeAdapter();
private static final MapTypeAdapter MAP_TYPE_ADAPTER = new MapTypeAdapter();
private static final BigDecimalTypeAdapter BIG_DECIMAL_TYPE_ADAPTER = new BigDecimalTypeAdapter();
private static final BigIntegerTypeAdapter BIG_INTEGER_TYPE_ADAPTER = new BigIntegerTypeAdapter();
private static final BooleanTypeAdapter BOOLEAN_TYPE_ADAPTER = new BooleanTypeAdapter();
private static final ByteTypeAdapter BYTE_TYPE_ADAPTER = new ByteTypeAdapter();
private static final CharacterTypeAdapter CHARACTER_TYPE_ADAPTER = new CharacterTypeAdapter();
private static final DoubleDeserializer DOUBLE_TYPE_ADAPTER = new DoubleDeserializer();
private static final FloatDeserializer FLOAT_TYPE_ADAPTER = new FloatDeserializer();
private static final IntegerTypeAdapter INTEGER_TYPE_ADAPTER = new IntegerTypeAdapter();
private static final LongDeserializer LONG_DESERIALIZER = new LongDeserializer();
private static final NumberTypeAdapter NUMBER_TYPE_ADAPTER = new NumberTypeAdapter();
private static final ShortTypeAdapter SHORT_TYPE_ADAPTER = new ShortTypeAdapter();
private static final StringTypeAdapter STRING_TYPE_ADAPTER = new StringTypeAdapter();
private static final PropertiesCreator PROPERTIES_CREATOR = new PropertiesCreator();
private static final TreeSetCreator TREE_SET_CREATOR = new TreeSetCreator();
private static final HashSetCreator HASH_SET_CREATOR = new HashSetCreator();
private static final GregorianCalendarTypeAdapter GREGORIAN_CALENDAR_TYPE_ADAPTER =
new GregorianCalendarTypeAdapter();
// The constants DEFAULT_SERIALIZERS, DEFAULT_DESERIALIZERS, and DEFAULT_INSTANCE_CREATORS
// must be defined after the constants for the type adapters. Otherwise, the type adapter
// constants will appear as nulls.
private static final ParameterizedTypeHandlerMap<JsonSerializer<?>> DEFAULT_SERIALIZERS =
createDefaultSerializers();
private static final ParameterizedTypeHandlerMap<JsonDeserializer<?>> DEFAULT_DESERIALIZERS =
createDefaultDeserializers();
private static final ParameterizedTypeHandlerMap<InstanceCreator<?>> DEFAULT_INSTANCE_CREATORS =
createDefaultInstanceCreators();
private static ParameterizedTypeHandlerMap<JsonSerializer<?>> createDefaultSerializers() {
ParameterizedTypeHandlerMap<JsonSerializer<?>> map =
new ParameterizedTypeHandlerMap<JsonSerializer<?>>();
map.registerForTypeHierarchy(Enum.class, ENUM_TYPE_ADAPTER);
map.register(URL.class, URL_TYPE_ADAPTER);
map.register(URI.class, URI_TYPE_ADAPTER);
map.register(UUID.class, UUUID_TYPE_ADAPTER);
map.register(Locale.class, LOCALE_TYPE_ADAPTER);
map.registerForTypeHierarchy(Collection.class, COLLECTION_TYPE_ADAPTER);
map.registerForTypeHierarchy(Map.class, MAP_TYPE_ADAPTER);
map.register(Date.class, DATE_TYPE_ADAPTER);
map.register(java.sql.Date.class, JAVA_SQL_DATE_TYPE_ADAPTER);
map.register(Timestamp.class, DATE_TYPE_ADAPTER);
map.register(Time.class, TIME_TYPE_ADAPTER);
map.register(Calendar.class, GREGORIAN_CALENDAR_TYPE_ADAPTER);
map.register(GregorianCalendar.class, GREGORIAN_CALENDAR_TYPE_ADAPTER);
map.register(BigDecimal.class, BIG_DECIMAL_TYPE_ADAPTER);
map.register(BigInteger.class, BIG_INTEGER_TYPE_ADAPTER);
// Add primitive serializers
map.register(Boolean.class, BOOLEAN_TYPE_ADAPTER);
map.register(boolean.class, BOOLEAN_TYPE_ADAPTER);
map.register(Byte.class, BYTE_TYPE_ADAPTER);
map.register(byte.class, BYTE_TYPE_ADAPTER);
map.register(Character.class, CHARACTER_TYPE_ADAPTER);
map.register(char.class, CHARACTER_TYPE_ADAPTER);
map.register(Integer.class, INTEGER_TYPE_ADAPTER);
map.register(int.class, INTEGER_TYPE_ADAPTER);
map.register(Number.class, NUMBER_TYPE_ADAPTER);
map.register(Short.class, SHORT_TYPE_ADAPTER);
map.register(short.class, SHORT_TYPE_ADAPTER);
map.register(String.class, STRING_TYPE_ADAPTER);
map.makeUnmodifiable();
return map;
}
private static ParameterizedTypeHandlerMap<JsonDeserializer<?>> createDefaultDeserializers() {
ParameterizedTypeHandlerMap<JsonDeserializer<?>> map =
new ParameterizedTypeHandlerMap<JsonDeserializer<?>>();
map.registerForTypeHierarchy(Enum.class, wrapDeserializer(ENUM_TYPE_ADAPTER));
map.register(URL.class, wrapDeserializer(URL_TYPE_ADAPTER));
map.register(URI.class, wrapDeserializer(URI_TYPE_ADAPTER));
map.register(UUID.class, wrapDeserializer(UUUID_TYPE_ADAPTER));
map.register(Locale.class, wrapDeserializer(LOCALE_TYPE_ADAPTER));
map.registerForTypeHierarchy(Collection.class, wrapDeserializer(COLLECTION_TYPE_ADAPTER));
map.registerForTypeHierarchy(Map.class, wrapDeserializer(MAP_TYPE_ADAPTER));
map.register(Date.class, wrapDeserializer(DATE_TYPE_ADAPTER));
map.register(java.sql.Date.class, wrapDeserializer(JAVA_SQL_DATE_TYPE_ADAPTER));
map.register(Timestamp.class, wrapDeserializer(TIMESTAMP_DESERIALIZER));
map.register(Time.class, wrapDeserializer(TIME_TYPE_ADAPTER));
map.register(Calendar.class, GREGORIAN_CALENDAR_TYPE_ADAPTER);
map.register(GregorianCalendar.class, GREGORIAN_CALENDAR_TYPE_ADAPTER);
map.register(BigDecimal.class, wrapDeserializer(BIG_DECIMAL_TYPE_ADAPTER));
map.register(BigInteger.class, wrapDeserializer(BIG_INTEGER_TYPE_ADAPTER));
// Add primitive deserializers
map.register(Boolean.class, wrapDeserializer(BOOLEAN_TYPE_ADAPTER));
map.register(boolean.class, wrapDeserializer(BOOLEAN_TYPE_ADAPTER));
map.register(Byte.class, wrapDeserializer(BYTE_TYPE_ADAPTER));
map.register(byte.class, wrapDeserializer(BYTE_TYPE_ADAPTER));
map.register(Character.class, wrapDeserializer(CHARACTER_TYPE_ADAPTER));
map.register(char.class, wrapDeserializer(CHARACTER_TYPE_ADAPTER));
map.register(Double.class, wrapDeserializer(DOUBLE_TYPE_ADAPTER));
map.register(double.class, wrapDeserializer(DOUBLE_TYPE_ADAPTER));
map.register(Float.class, wrapDeserializer(FLOAT_TYPE_ADAPTER));
map.register(float.class, wrapDeserializer(FLOAT_TYPE_ADAPTER));
map.register(Integer.class, wrapDeserializer(INTEGER_TYPE_ADAPTER));
map.register(int.class, wrapDeserializer(INTEGER_TYPE_ADAPTER));
map.register(Long.class, wrapDeserializer(LONG_DESERIALIZER));
map.register(long.class, wrapDeserializer(LONG_DESERIALIZER));
map.register(Number.class, wrapDeserializer(NUMBER_TYPE_ADAPTER));
map.register(Short.class, wrapDeserializer(SHORT_TYPE_ADAPTER));
map.register(short.class, wrapDeserializer(SHORT_TYPE_ADAPTER));
map.register(String.class, wrapDeserializer(STRING_TYPE_ADAPTER));
map.makeUnmodifiable();
return map;
}
private static ParameterizedTypeHandlerMap<InstanceCreator<?>> createDefaultInstanceCreators() {
ParameterizedTypeHandlerMap<InstanceCreator<?>> map =
new ParameterizedTypeHandlerMap<InstanceCreator<?>>();
map.registerForTypeHierarchy(Map.class, MAP_TYPE_ADAPTER);
// Add Collection type instance creators
map.registerForTypeHierarchy(Collection.class, COLLECTION_TYPE_ADAPTER);
map.registerForTypeHierarchy(Set.class, HASH_SET_CREATOR);
map.registerForTypeHierarchy(SortedSet.class, TREE_SET_CREATOR);
map.register(Properties.class, PROPERTIES_CREATOR);
map.makeUnmodifiable();
return map;
}
@SuppressWarnings({"unchecked", "rawtypes"})
private static JsonDeserializer<?> wrapDeserializer(JsonDeserializer<?> deserializer) {
return new JsonDeserializerExceptionWrapper(deserializer);
}
static ParameterizedTypeHandlerMap<JsonSerializer<?>> getDefaultSerializers() {
return getDefaultSerializers(false, LongSerializationPolicy.DEFAULT);
}
static ParameterizedTypeHandlerMap<JsonSerializer<?>> getDefaultSerializers(
boolean serializeSpecialFloatingPointValues, LongSerializationPolicy longSerializationPolicy) {
ParameterizedTypeHandlerMap<JsonSerializer<?>> serializers =
new ParameterizedTypeHandlerMap<JsonSerializer<?>>();
// Double primitive
DefaultTypeAdapters.DoubleSerializer doubleSerializer =
new DefaultTypeAdapters.DoubleSerializer(serializeSpecialFloatingPointValues);
serializers.registerIfAbsent(Double.class, doubleSerializer);
serializers.registerIfAbsent(double.class, doubleSerializer);
// Float primitive
DefaultTypeAdapters.FloatSerializer floatSerializer =
new DefaultTypeAdapters.FloatSerializer(serializeSpecialFloatingPointValues);
serializers.registerIfAbsent(Float.class, floatSerializer);
serializers.registerIfAbsent(float.class, floatSerializer);
// Long primitive
DefaultTypeAdapters.LongSerializer longSerializer =
new DefaultTypeAdapters.LongSerializer(longSerializationPolicy);
serializers.registerIfAbsent(Long.class, longSerializer);
serializers.registerIfAbsent(long.class, longSerializer);
serializers.registerIfAbsent(DEFAULT_SERIALIZERS);
return serializers;
}
static ParameterizedTypeHandlerMap<JsonDeserializer<?>> getDefaultDeserializers() {
return DEFAULT_DESERIALIZERS;
}
static ParameterizedTypeHandlerMap<InstanceCreator<?>> getDefaultInstanceCreators() {
return DEFAULT_INSTANCE_CREATORS;
}
static class DefaultDateTypeAdapter implements JsonSerializer<Date>, JsonDeserializer<Date> {
private final DateFormat format;
DefaultDateTypeAdapter() {
this.format = DateFormat.getDateTimeInstance();
}
DefaultDateTypeAdapter(final String datePattern) {
this.format = new SimpleDateFormat(datePattern);
}
DefaultDateTypeAdapter(final int style) {
this.format = DateFormat.getDateInstance(style);
}
public DefaultDateTypeAdapter(final int dateStyle, final int timeStyle) {
this.format = DateFormat.getDateTimeInstance(dateStyle, timeStyle);
}
// 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 (format) {
String dateFormatAsString = format.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");
}
try {
synchronized (format) {
return format.parse(json.getAsString());
}
} catch (ParseException e) {
throw new JsonSyntaxException(e);
}
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder();
sb.append(DefaultDateTypeAdapter.class.getSimpleName());
sb.append('(').append(format.getClass().getSimpleName()).append(')');
return sb.toString();
}
}
static class DefaultJavaSqlDateTypeAdapter implements JsonSerializer<java.sql.Date>,
JsonDeserializer<java.sql.Date> {
private final DateFormat format;
DefaultJavaSqlDateTypeAdapter() {
this.format = new SimpleDateFormat("MMM d, yyyy");
}
public JsonElement serialize(java.sql.Date src, Type typeOfSrc,
JsonSerializationContext context) {
synchronized (format) {
String dateFormatAsString = format.format(src);
return new JsonPrimitive(dateFormatAsString);
}
}
public java.sql.Date deserialize(JsonElement json, Type typeOfT,
JsonDeserializationContext context) throws JsonParseException {
if (!(json instanceof JsonPrimitive)) {
throw new JsonParseException("The date should be a string value");
}
try {
synchronized (format) {
Date date = format.parse(json.getAsString());
return new java.sql.Date(date.getTime());
}
} catch (ParseException e) {
throw new JsonSyntaxException(e);
}
}
}
static class DefaultTimestampDeserializer implements JsonDeserializer<Timestamp> {
public Timestamp deserialize(JsonElement json, Type typeOfT,
JsonDeserializationContext context) throws JsonParseException {
Date date = context.deserialize(json, Date.class);
return new Timestamp(date.getTime());
}
}
static class DefaultTimeTypeAdapter implements JsonSerializer<Time>, JsonDeserializer<Time> {
private final DateFormat format;
DefaultTimeTypeAdapter() {
this.format = new SimpleDateFormat("hh:mm:ss a");
}
public JsonElement serialize(Time src, Type typeOfSrc, JsonSerializationContext context) {
synchronized (format) {
String dateFormatAsString = format.format(src);
return new JsonPrimitive(dateFormatAsString);
}
}
public Time deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
throws JsonParseException {
if (!(json instanceof JsonPrimitive)) {
throw new JsonParseException("The date should be a string value");
}
try {
synchronized (format) {
Date date = format.parse(json.getAsString());
return new Time(date.getTime());
}
} catch (ParseException e) {
throw new JsonSyntaxException(e);
}
}
}
private static class GregorianCalendarTypeAdapter
implements JsonSerializer<GregorianCalendar>, JsonDeserializer<GregorianCalendar> {
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";
public JsonElement serialize(GregorianCalendar src, Type typeOfSrc,
JsonSerializationContext context) {
JsonObject obj = new JsonObject();
obj.addProperty(YEAR, src.get(Calendar.YEAR));
obj.addProperty(MONTH, src.get(Calendar.MONTH));
obj.addProperty(DAY_OF_MONTH, src.get(Calendar.DAY_OF_MONTH));
obj.addProperty(HOUR_OF_DAY, src.get(Calendar.HOUR_OF_DAY));
obj.addProperty(MINUTE, src.get(Calendar.MINUTE));
obj.addProperty(SECOND, src.get(Calendar.SECOND));
return obj;
}
public GregorianCalendar deserialize(JsonElement json, Type typeOfT,
JsonDeserializationContext context) throws JsonParseException {
JsonObject obj = json.getAsJsonObject();
int year = obj.get(YEAR).getAsInt();
int month = obj.get(MONTH).getAsInt();
int dayOfMonth = obj.get(DAY_OF_MONTH).getAsInt();
int hourOfDay = obj.get(HOUR_OF_DAY).getAsInt();
int minute = obj.get(MINUTE).getAsInt();
int second = obj.get(SECOND).getAsInt();
return new GregorianCalendar(year, month, dayOfMonth, hourOfDay, minute, second);
}
@Override
public String toString() {
return GregorianCalendarTypeAdapter.class.getSimpleName();
}
}
@SuppressWarnings("unchecked")
private static class EnumTypeAdapter<T extends Enum<T>>
implements JsonSerializer<T>, JsonDeserializer<T> {
public JsonElement serialize(T src, Type typeOfSrc, JsonSerializationContext context) {
return new JsonPrimitive(src.name());
}
@SuppressWarnings("cast")
public T deserialize(JsonElement json, Type classOfT, JsonDeserializationContext context)
throws JsonParseException {
return (T) Enum.valueOf((Class<T>) classOfT, json.getAsString());
}
@Override
public String toString() {
return EnumTypeAdapter.class.getSimpleName();
}
}
private static class UrlTypeAdapter implements JsonSerializer<URL>, JsonDeserializer<URL> {
public JsonElement serialize(URL src, Type typeOfSrc, JsonSerializationContext context) {
return new JsonPrimitive(src.toExternalForm());
}
public URL deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
throws JsonParseException {
try {
return new URL(json.getAsString());
} catch (MalformedURLException e) {
throw new JsonSyntaxException(e);
}
}
@Override
public String toString() {
return UrlTypeAdapter.class.getSimpleName();
}
}
private static class UriTypeAdapter implements JsonSerializer<URI>, JsonDeserializer<URI> {
public JsonElement serialize(URI src, Type typeOfSrc, JsonSerializationContext context) {
return new JsonPrimitive(src.toASCIIString());
}
public URI deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
throws JsonParseException {
try {
return new URI(json.getAsString());
} catch (URISyntaxException e) {
throw new JsonSyntaxException(e);
}
}
@Override
public String toString() {
return UriTypeAdapter.class.getSimpleName();
}
}
private static class UuidTypeAdapter implements JsonSerializer<UUID>, JsonDeserializer<UUID> {
public JsonElement serialize(UUID src, Type typeOfSrc, JsonSerializationContext context) {
return new JsonPrimitive(src.toString());
}
public UUID deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
throws JsonParseException {
return UUID.fromString(json.getAsString());
}
@Override
public String toString() {
return UuidTypeAdapter.class.getSimpleName();
}
}
private static class LocaleTypeAdapter
implements JsonSerializer<Locale>, JsonDeserializer<Locale> {
public JsonElement serialize(Locale src, Type typeOfSrc, JsonSerializationContext context) {
return new JsonPrimitive(src.toString());
}
public Locale deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
throws JsonParseException {
String locale = json.getAsString();
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 String toString() {
return LocaleTypeAdapter.class.getSimpleName();
}
}
@SuppressWarnings({"unchecked", "rawtypes"})
private static class CollectionTypeAdapter implements JsonSerializer<Collection>,
JsonDeserializer<Collection>, InstanceCreator<Collection> {
public JsonElement serialize(Collection src, Type typeOfSrc, JsonSerializationContext context) {
if (src == null) {
return JsonNull.createJsonNull();
}
JsonArray array = new JsonArray();
Type childGenericType = null;
if (typeOfSrc instanceof ParameterizedType) {
childGenericType = new TypeInfoCollection(typeOfSrc).getElementType();
}
for (Object child : src) {
if (child == null) {
array.add(JsonNull.createJsonNull());
} else {
Type childType = (childGenericType == null || childGenericType == Object.class)
? child.getClass() : childGenericType;
JsonElement element = context.serialize(child, childType);
array.add(element);
}
}
return array;
}
public Collection deserialize(JsonElement json, Type typeOfT,
JsonDeserializationContext context) throws JsonParseException {
if (json.isJsonNull()) {
return null;
}
// Use ObjectConstructor to create instance instead of hard-coding a specific type.
// This handles cases where users are using their own subclass of Collection.
Collection collection = constructCollectionType(typeOfT, context);
Type childType = new TypeInfoCollection(typeOfT).getElementType();
for (JsonElement childElement : json.getAsJsonArray()) {
if (childElement == null || childElement.isJsonNull()) {
collection.add(null);
} else {
Object value = context.deserialize(childElement, childType);
collection.add(value);
}
}
return collection;
}
private Collection constructCollectionType(Type collectionType,
JsonDeserializationContext context) {
JsonDeserializationContextDefault contextImpl = (JsonDeserializationContextDefault) context;
ObjectConstructor objectConstructor = contextImpl.getObjectConstructor();
return (Collection) objectConstructor.construct(collectionType);
}
public Collection createInstance(Type type) {
return new LinkedList();
}
}
private static class PropertiesCreator implements InstanceCreator<Properties> {
public Properties createInstance(Type type) {
return new Properties();
}
}
@SuppressWarnings({"unchecked", "rawtypes"})
static class MapTypeAdapter implements JsonSerializer<Map>, JsonDeserializer<Map>,
InstanceCreator<Map> {
public JsonElement serialize(Map src, Type typeOfSrc, JsonSerializationContext context) {
JsonObject map = new JsonObject();
Type childGenericType = null;
if (typeOfSrc instanceof ParameterizedType) {
childGenericType = new TypeInfoMap(typeOfSrc).getValueType();
}
for (Map.Entry entry : (Set<Map.Entry>) src.entrySet()) {
Object value = entry.getValue();
JsonElement valueElement;
if (value == null) {
valueElement = JsonNull.createJsonNull();
} else {
Type childType = (childGenericType == null)
? value.getClass() : childGenericType;
valueElement = context.serialize(value, childType);
}
map.add(String.valueOf(entry.getKey()), valueElement);
}
return map;
}
public Map deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
throws JsonParseException {
// Use ObjectConstructor to create instance instead of hard-coding a specific type.
// This handles cases where users are using their own subclass of Map.
Map<Object, Object> map = constructMapType(typeOfT, context);
TypeInfoMap mapTypeInfo = new TypeInfoMap(typeOfT);
for (Map.Entry<String, JsonElement> entry : json.getAsJsonObject().entrySet()) {
Object key = context.deserialize(new JsonPrimitive(entry.getKey()), mapTypeInfo.getKeyType());
Object value = context.deserialize(entry.getValue(), mapTypeInfo.getValueType());
map.put(key, value);
}
return map;
}
private Map constructMapType(Type mapType, JsonDeserializationContext context) {
JsonDeserializationContextDefault contextImpl = (JsonDeserializationContextDefault) context;
ObjectConstructor objectConstructor = contextImpl.getObjectConstructor();
return (Map) objectConstructor.construct(mapType);
}
public Map createInstance(Type type) {
return new LinkedHashMap();
}
@Override
public String toString() {
return MapTypeAdapter.class.getSimpleName();
}
}
private static class BigDecimalTypeAdapter
implements JsonSerializer<BigDecimal>, JsonDeserializer<BigDecimal> {
public JsonElement serialize(BigDecimal src, Type typeOfSrc, JsonSerializationContext context) {
return new JsonPrimitive(src);
}
public BigDecimal deserialize(JsonElement json, Type typeOfT,
JsonDeserializationContext context) throws JsonParseException {
return json.getAsBigDecimal();
}
@Override
public String toString() {
return BigDecimalTypeAdapter.class.getSimpleName();
}
}
private static class BigIntegerTypeAdapter
implements JsonSerializer<BigInteger>, JsonDeserializer<BigInteger> {
public JsonElement serialize(BigInteger src, Type typeOfSrc, JsonSerializationContext context) {
return new JsonPrimitive(src);
}
public BigInteger deserialize(JsonElement json, Type typeOfT,
JsonDeserializationContext context) throws JsonParseException {
return json.getAsBigInteger();
}
@Override
public String toString() {
return BigIntegerTypeAdapter.class.getSimpleName();
}
}
private static class NumberTypeAdapter
implements JsonSerializer<Number>, JsonDeserializer<Number> {
public JsonElement serialize(Number src, Type typeOfSrc, JsonSerializationContext context) {
return new JsonPrimitive(src);
}
public Number deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
throws JsonParseException {
return json.getAsNumber();
}
@Override
public String toString() {
return NumberTypeAdapter.class.getSimpleName();
}
}
private static class LongSerializer implements JsonSerializer<Long> {
private final LongSerializationPolicy longSerializationPolicy;
private LongSerializer(LongSerializationPolicy longSerializationPolicy) {
this.longSerializationPolicy = longSerializationPolicy;
}
public JsonElement serialize(Long src, Type typeOfSrc, JsonSerializationContext context) {
return longSerializationPolicy.serialize(src);
}
@Override
public String toString() {
return LongSerializer.class.getSimpleName();
}
}
private static class LongDeserializer implements JsonDeserializer<Long> {
public Long deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
throws JsonParseException {
return json.getAsLong();
}
@Override
public String toString() {
return LongDeserializer.class.getSimpleName();
}
}
private static class IntegerTypeAdapter
implements JsonSerializer<Integer>, JsonDeserializer<Integer> {
public JsonElement serialize(Integer src, Type typeOfSrc, JsonSerializationContext context) {
return new JsonPrimitive(src);
}
public Integer deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
throws JsonParseException {
return json.getAsInt();
}
@Override
public String toString() {
return IntegerTypeAdapter.class.getSimpleName();
}
}
private static class ShortTypeAdapter
implements JsonSerializer<Short>, JsonDeserializer<Short> {
public JsonElement serialize(Short src, Type typeOfSrc, JsonSerializationContext context) {
return new JsonPrimitive(src);
}
public Short deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
throws JsonParseException {
return json.getAsShort();
}
@Override
public String toString() {
return ShortTypeAdapter.class.getSimpleName();
}
}
private static class ByteTypeAdapter implements JsonSerializer<Byte>, JsonDeserializer<Byte> {
public JsonElement serialize(Byte src, Type typeOfSrc, JsonSerializationContext context) {
return new JsonPrimitive(src);
}
public Byte deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
throws JsonParseException {
return json.getAsByte();
}
@Override
public String toString() {
return ByteTypeAdapter.class.getSimpleName();
}
}
static class FloatSerializer implements JsonSerializer<Float> {
private final boolean serializeSpecialFloatingPointValues;
FloatSerializer(boolean serializeSpecialDoubleValues) {
this.serializeSpecialFloatingPointValues = serializeSpecialDoubleValues;
}
public JsonElement serialize(Float src, Type typeOfSrc, JsonSerializationContext context) {
if (!serializeSpecialFloatingPointValues) {
if (Float.isNaN(src) || Float.isInfinite(src)) {
throw new IllegalArgumentException(src
+ " is not a valid float value as per JSON specification. To override this"
+ " behavior, use GsonBuilder.serializeSpecialFloatingPointValues() method.");
}
}
return new JsonPrimitive(src);
}
}
private static class FloatDeserializer implements JsonDeserializer<Float> {
public Float deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
throws JsonParseException {
return json.getAsFloat();
}
@Override
public String toString() {
return FloatDeserializer.class.getSimpleName();
}
}
static class DoubleSerializer implements JsonSerializer<Double> {
private final boolean serializeSpecialFloatingPointValues;
DoubleSerializer(boolean serializeSpecialDoubleValues) {
this.serializeSpecialFloatingPointValues = serializeSpecialDoubleValues;
}
public JsonElement serialize(Double src, Type typeOfSrc, JsonSerializationContext context) {
if (!serializeSpecialFloatingPointValues) {
if (Double.isNaN(src) || Double.isInfinite(src)) {
throw new IllegalArgumentException(src
+ " is not a valid double value as per JSON specification. To override this"
+ " behavior, use GsonBuilder.serializeSpecialDoubleValues() method.");
}
}
return new JsonPrimitive(src);
}
}
private static class DoubleDeserializer implements JsonDeserializer<Double> {
public Double deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
throws JsonParseException {
return json.getAsDouble();
}
@Override
public String toString() {
return DoubleDeserializer.class.getSimpleName();
}
}
private static class CharacterTypeAdapter
implements JsonSerializer<Character>, JsonDeserializer<Character> {
public JsonElement serialize(Character src, Type typeOfSrc, JsonSerializationContext context) {
return new JsonPrimitive(src);
}
public Character deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
throws JsonParseException {
return json.getAsCharacter();
}
@Override
public String toString() {
return CharacterTypeAdapter.class.getSimpleName();
}
}
private static class StringTypeAdapter
implements JsonSerializer<String>, JsonDeserializer<String> {
public JsonElement serialize(String src, Type typeOfSrc, JsonSerializationContext context) {
return new JsonPrimitive(src);
}
public String deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
throws JsonParseException {
return json.getAsString();
}
@Override
public String toString() {
return StringTypeAdapter.class.getSimpleName();
}
}
private static class BooleanTypeAdapter
implements JsonSerializer<Boolean>, JsonDeserializer<Boolean> {
public JsonElement serialize(Boolean src, Type typeOfSrc, JsonSerializationContext context) {
return new JsonPrimitive(src);
}
public Boolean deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
throws JsonParseException {
return json.getAsBoolean();
}
@Override
public String toString() {
return BooleanTypeAdapter.class.getSimpleName();
}
}
private static class TreeSetCreator implements InstanceCreator<TreeSet<?>> {
public TreeSet<?> createInstance(Type type) {
return new TreeSet<Object>();
}
@Override
public String toString() {
return TreeSetCreator.class.getSimpleName();
}
}
private static class HashSetCreator implements InstanceCreator<HashSet<?>> {
public HashSet<?> createInstance(Type type) {
return new HashSet<Object>();
}
@Override
public String toString() {
return HashSetCreator.class.getSimpleName();
}
}
}

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/*
* 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.bukkit.mcteam.gson;
import java.io.IOException;
/**
* A simple implementation of the {@link JsonElementVisitor} that simply delegates the method
* invocation onto a {@code delegate} instance of the {@link JsonElementVisitor}. This object
* can be used to build a chain of visitors such that each Visitor instance can perform some
* operation on the {@link JsonElement} and then pass on the input to the delegate. This kind
* of pattern is sometimes referred as a "Chain of Responsibility".
*
* <p>The following is an example use case:
*
* <pre>
* class JsonEscapingVisitor extends DelegatingJsonElementVisitor {
* public JsonEscapingVisitor(JsonElementVisitor) {
* super(visitor);
* }
*
* public void visitPrimitive(JsonPrimitive primitive) {
* JsonPrimitive escapedPrimitive = escapePrimitiveObject(primitive);
* super.visitPrimitive(escapedPrimitive);
* }
* }
*
* JsonElementVisitor visitor = new JsonEscapingVisitor(new FormattingVisitor());
* </pre></p>
*
* @author Joel Leitch
*/
class DelegatingJsonElementVisitor implements JsonElementVisitor {
private final JsonElementVisitor delegate;
protected DelegatingJsonElementVisitor(JsonElementVisitor delegate) {
Preconditions.checkNotNull(delegate);
this.delegate = delegate;
}
public void endArray(JsonArray array) throws IOException {
delegate.endArray(array);
}
public void endObject(JsonObject object) throws IOException {
delegate.endObject(object);
}
public void startArray(JsonArray array) throws IOException {
delegate.startArray(array);
}
public void startObject(JsonObject object) throws IOException {
delegate.startObject(object);
}
public void visitArrayMember(JsonArray parent, JsonPrimitive member,
boolean isFirst) throws IOException {
delegate.visitArrayMember(parent, member, isFirst);
}
public void visitArrayMember(JsonArray parent, JsonArray member,
boolean isFirst) throws IOException {
delegate.visitArrayMember(parent, member, isFirst);
}
public void visitArrayMember(JsonArray parent, JsonObject member,
boolean isFirst) throws IOException {
delegate.visitArrayMember(parent, member, isFirst);
}
public void visitObjectMember(JsonObject parent, String memberName, JsonPrimitive member,
boolean isFirst) throws IOException {
delegate.visitObjectMember(parent, memberName, member, isFirst);
}
public void visitObjectMember(JsonObject parent, String memberName, JsonArray member,
boolean isFirst) throws IOException {
delegate.visitObjectMember(parent, memberName, member, isFirst);
}
public void visitObjectMember(JsonObject parent, String memberName, JsonObject member,
boolean isFirst) throws IOException {
delegate.visitObjectMember(parent, memberName, member, isFirst);
}
public void visitNullObjectMember(JsonObject parent, String memberName,
boolean isFirst) throws IOException {
delegate.visitNullObjectMember(parent, memberName, isFirst);
}
public void visitPrimitive(JsonPrimitive primitive) throws IOException {
delegate.visitPrimitive(primitive);
}
public void visitNull() throws IOException {
delegate.visitNull();
}
public void visitNullArrayMember(JsonArray parent, boolean isFirst) throws IOException {
delegate.visitNullArrayMember(parent, isFirst);
}
}

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/*
* 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.bukkit.mcteam.gson;
import java.util.Collection;
/**
* A wrapper class used to collect numerous {@link ExclusionStrategy} objects
* and perform a short-circuited OR operation.
*
* @author Joel Leitch
*/
final class DisjunctionExclusionStrategy implements ExclusionStrategy {
private final Collection<ExclusionStrategy> strategies;
public DisjunctionExclusionStrategy(Collection<ExclusionStrategy> strategies) {
Preconditions.checkNotNull(strategies);
this.strategies = strategies;
}
public boolean shouldSkipField(FieldAttributes f) {
for (ExclusionStrategy strategy : strategies) {
if (strategy.shouldSkipField(f)) {
return true;
}
}
return false;
}
public boolean shouldSkipClass(Class<?> clazz) {
for (ExclusionStrategy strategy : strategies) {
if (strategy.shouldSkipClass(clazz)) {
return true;
}
}
return false;
}
}

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/*
* 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.bukkit.mcteam.gson;
import java.io.IOException;
import java.util.Collections;
import java.util.HashSet;
import java.util.Set;
/**
* A utility class that is used to perform JSON escaping so that ", <, >, etc. characters are
* properly encoded in the JSON string representation before returning to the client code.
*
* <p>This class contains a single method to escape a passed in string value:
* <pre>
* String jsonStringValue = "beforeQuote\"afterQuote";
* String escapedValue = Escaper.escapeJsonString(jsonStringValue);
* </pre></p>
*
* @author Inderjeet Singh
* @author Joel Leitch
*/
final class Escaper {
private static final char[] HEX_CHARS = {
'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'
};
private static final Set<Character> JS_ESCAPE_CHARS;
private static final Set<Character> HTML_ESCAPE_CHARS;
static {
Set<Character> mandatoryEscapeSet = new HashSet<Character>();
mandatoryEscapeSet.add('"');
mandatoryEscapeSet.add('\\');
JS_ESCAPE_CHARS = Collections.unmodifiableSet(mandatoryEscapeSet);
Set<Character> htmlEscapeSet = new HashSet<Character>();
htmlEscapeSet.add('<');
htmlEscapeSet.add('>');
htmlEscapeSet.add('&');
htmlEscapeSet.add('=');
htmlEscapeSet.add('\'');
// htmlEscapeSet.add('/'); -- Removing slash for now since it causes some incompatibilities
HTML_ESCAPE_CHARS = Collections.unmodifiableSet(htmlEscapeSet);
}
private final boolean escapeHtmlCharacters;
Escaper(boolean escapeHtmlCharacters) {
this.escapeHtmlCharacters = escapeHtmlCharacters;
}
public String escapeJsonString(CharSequence plainText) {
StringBuffer escapedString = new StringBuffer(plainText.length() + 20);
try {
escapeJsonString(plainText, escapedString);
} catch (IOException e) {
throw new RuntimeException(e);
}
return escapedString.toString();
}
private void escapeJsonString(CharSequence plainText, StringBuffer out) throws IOException {
int pos = 0; // Index just past the last char in plainText written to out.
int len = plainText.length();
for (int charCount, i = 0; i < len; i += charCount) {
int codePoint = Character.codePointAt(plainText, i);
charCount = Character.charCount(codePoint);
if (!isControlCharacter(codePoint) && !mustEscapeCharInJsString(codePoint)) {
continue;
}
out.append(plainText, pos, i);
pos = i + charCount;
switch (codePoint) {
case '\b':
out.append("\\b");
break;
case '\t':
out.append("\\t");
break;
case '\n':
out.append("\\n");
break;
case '\f':
out.append("\\f");
break;
case '\r':
out.append("\\r");
break;
case '\\':
out.append("\\\\");
break;
case '/':
out.append("\\/");
break;
case '"':
out.append("\\\"");
break;
default:
appendHexJavaScriptRepresentation(codePoint, out);
break;
}
}
out.append(plainText, pos, len);
}
private boolean mustEscapeCharInJsString(int codepoint) {
if (!Character.isSupplementaryCodePoint(codepoint)) {
char c = (char) codepoint;
return JS_ESCAPE_CHARS.contains(c)
|| (escapeHtmlCharacters && HTML_ESCAPE_CHARS.contains(c));
}
return false;
}
private static boolean isControlCharacter(int codePoint) {
// JSON spec defines these code points as control characters, so they must be escaped
return codePoint < 0x20
|| codePoint == 0x2028 // Line separator
|| codePoint == 0x2029 // Paragraph separator
|| (codePoint >= 0x7f && codePoint <= 0x9f);
}
private static void appendHexJavaScriptRepresentation(int codePoint, Appendable out)
throws IOException {
if (Character.isSupplementaryCodePoint(codePoint)) {
// Handle supplementary unicode values which are not representable in
// javascript. We deal with these by escaping them as two 4B sequences
// so that they will round-trip properly when sent from java to javascript
// and back.
char[] surrogates = Character.toChars(codePoint);
appendHexJavaScriptRepresentation(surrogates[0], out);
appendHexJavaScriptRepresentation(surrogates[1], out);
return;
}
out.append("\\u")
.append(HEX_CHARS[(codePoint >>> 12) & 0xf])
.append(HEX_CHARS[(codePoint >>> 8) & 0xf])
.append(HEX_CHARS[(codePoint >>> 4) & 0xf])
.append(HEX_CHARS[codePoint & 0xf]);
}
}

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/*
* 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.bukkit.mcteam.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>
*
* @author Inderjeet Singh
* @author Joel Leitch
*
* @see GsonBuilder#setExclusionStrategies(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);
}

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/*
* 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.bukkit.mcteam.gson;
import com.bukkit.mcteam.gson.annotations.Expose;
/**
* Excludes fields that do not have the {@link Expose} annotation
*
* @author Inderjeet Singh
* @author Joel Leitch
*/
final class ExposeAnnotationDeserializationExclusionStrategy implements ExclusionStrategy {
public boolean shouldSkipClass(Class<?> clazz) {
return false;
}
public boolean shouldSkipField(FieldAttributes f) {
Expose annotation = f.getAnnotation(Expose.class);
if (annotation == null) {
return true;
}
return !annotation.deserialize();
}
}

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/*
* 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.bukkit.mcteam.gson;
import com.bukkit.mcteam.gson.annotations.Expose;
/**
* Excludes fields that do not have the {@link Expose} annotation
*
* @author Inderjeet Singh
* @author Joel Leitch
*/
final class ExposeAnnotationSerializationExclusionStrategy implements ExclusionStrategy {
public boolean shouldSkipClass(Class<?> clazz) {
return false;
}
public boolean shouldSkipField(FieldAttributes f) {
Expose annotation = f.getAnnotation(Expose.class);
if (annotation == null) {
return true;
}
return !annotation.serialize();
}
}

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/*
* 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.bukkit.mcteam.gson;
import java.lang.annotation.Annotation;
import java.lang.reflect.Field;
import java.lang.reflect.Type;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
/**
* 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 static final String MAX_CACHE_PROPERTY_NAME =
"com.bukkit.mcteam.gson.annotation_cache_size_hint";
private static final Cache<Pair<Class<?>, String>, Collection<Annotation>> ANNOTATION_CACHE =
new LruCache<Pair<Class<?>,String>, Collection<Annotation>>(getMaxCacheSize());
private final Class<?> declaringClazz;
private final Field field;
private final Class<?> declaredType;
private final boolean isSynthetic;
private final int modifiers;
private final String name;
// Fields used for lazy initialization
private Type genericType;
private Collection<Annotation> annotations;
/**
* Constructs a Field Attributes object from the {@code f}.
*
* @param f the field to pull attributes from
*/
FieldAttributes(final Class<?> declaringClazz, final Field f) {
Preconditions.checkNotNull(declaringClazz);
this.declaringClazz = declaringClazz;
name = f.getName();
declaredType = f.getType();
isSynthetic = f.isSynthetic();
modifiers = f.getModifiers();
field = f;
}
private static int getMaxCacheSize() {
final int defaultMaxCacheSize = 2000;
try {
String propertyValue = System.getProperty(
MAX_CACHE_PROPERTY_NAME, String.valueOf(defaultMaxCacheSize));
return Integer.parseInt(propertyValue);
} catch (NumberFormatException e) {
return defaultMaxCacheSize;
}
}
/**
* @return the declaring class that contains this field
*/
public Class<?> getDeclaringClass() {
return declaringClazz;
}
/**
* @return the name of the field
*/
public String getName() {
return name;
}
/**
* <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<List<String>>() {}.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() {
if (genericType == null) {
genericType = field.getGenericType();
}
return genericType;
}
/**
* 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 declaredType;
}
/**
* 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 getAnnotationFromArray(getAnnotations(), 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() {
if (annotations == null) {
Pair<Class<?>, String> key = new Pair<Class<?>, String>(declaringClazz, name);
annotations = ANNOTATION_CACHE.getElement(key);
if (annotations == null) {
annotations = Collections.unmodifiableCollection(
Arrays.asList(field.getAnnotations()));
ANNOTATION_CACHE.addElement(key, annotations);
}
}
return annotations;
}
/**
* 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 (modifiers & modifier) != 0;
}
/**
* This is exposed internally only for the removing synthetic fields from the JSON output.
*
* @throws IllegalAccessException
* @throws IllegalArgumentException
*/
void set(Object instance, Object value) throws IllegalAccessException {
field.set(instance, value);
}
/**
* 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 isSynthetic;
}
/**
* @deprecated remove this when {@link FieldNamingStrategy} is deleted.
*/
@Deprecated
Field getFieldObject() {
return field;
}
@SuppressWarnings("unchecked")
private static <T extends Annotation> T getAnnotationFromArray(
Collection<Annotation> annotations, Class<T> annotation) {
for (Annotation a : annotations) {
if (a.annotationType() == annotation) {
return (T) a;
}
}
return null;
}
}

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/*
* 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.bukkit.mcteam.gson;
/**
* An enumeration that defines a few standard naming conventions for JSON field names.
* This enumeration should be used in conjunction with {@link com.bukkit.mcteam.gson.GsonBuilder}
* to configure a {@link com.bukkit.mcteam.gson.Gson} instance to properly translate Java field
* names into the desired JSON field names.
*
* @author Inderjeet Singh
* @author Joel Leitch
*/
public enum FieldNamingPolicy {
/**
* 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(new ModifyFirstLetterNamingPolicy(
ModifyFirstLetterNamingPolicy.LetterModifier.UPPER)),
/**
* 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(new UpperCamelCaseSeparatorNamingPolicy(" ")),
/**
* 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(new LowerCamelCaseSeparatorNamingPolicy("_")),
/**
* 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(new LowerCamelCaseSeparatorNamingPolicy("-"));
private final FieldNamingStrategy2 namingPolicy;
private FieldNamingPolicy(FieldNamingStrategy2 namingPolicy) {
this.namingPolicy = namingPolicy;
}
FieldNamingStrategy2 getFieldNamingPolicy() {
return namingPolicy;
}
}

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/*
* 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.bukkit.mcteam.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);
}

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/*
* 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.bukkit.mcteam.gson;
/**
* The new 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
*/
interface FieldNamingStrategy2 {
/**
* Translates the field name into its JSON field name representation.
*
* @param f the field that is being translated
* @return the translated field name.
* @since 1.3
*/
public String translateName(FieldAttributes f);
}

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/*
* 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.bukkit.mcteam.gson;
/**
* Adapts the old "deprecated" {@link FieldNamingStrategy} to the new {@link FieldNamingStrategy2}
* type.
*
* @author Inderjeet Singh
* @author Joel Leitch
*/
final class FieldNamingStrategy2Adapter implements FieldNamingStrategy2 {
private final FieldNamingStrategy adaptee;
public FieldNamingStrategy2Adapter(FieldNamingStrategy adaptee) {
Preconditions.checkNotNull(adaptee);
this.adaptee = adaptee;
}
@SuppressWarnings("deprecation")
public String translateName(FieldAttributes f) {
return adaptee.translateName(f.getFieldObject());
}
}

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/*
* 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.bukkit.mcteam.gson;
import java.lang.reflect.GenericArrayType;
import java.lang.reflect.Type;
/**
* An simple pojo-like immutable instance of the {@link GenericArrayType}. This object provides
* us the ability to create reflective types on demand. This object is required for support
* object similar to the one defined below:
* <pre>
* class Foo<T> {
* private final List<T>[] arrayOfListT;
*
* Foo(List<T>[] arrayList) {
* this.arrayOfListT = arrayList;
* }
* }
* </pre>
*
* <p>During parsing or serialization, we know the real variable type parameter {@code T},
* so we can build a new {@code GenericTypeArray} with the "real" type parameters and
* pass that object along instead.
*
* @author Inderjeet Singh
* @author Joel Leitch
*/
final class GenericArrayTypeImpl implements GenericArrayType {
private final Type genericComponentType;
public GenericArrayTypeImpl(Type genericComponentType) {
this.genericComponentType = genericComponentType;
}
public Type getGenericComponentType() {
return genericComponentType;
}
@Override
public boolean equals(Object o) {
if (!(o instanceof GenericArrayType)) {
return false;
}
GenericArrayType that = (GenericArrayType) o;
Type thatComponentType = that.getGenericComponentType();
return genericComponentType == null ?
thatComponentType == null : genericComponentType.equals(thatComponentType);
}
@Override
public int hashCode() {
return (genericComponentType == null) ? 0 : genericComponentType.hashCode();
}
}

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/*
* 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.bukkit.mcteam.gson;
import com.bukkit.mcteam.gson.stream.JsonReader;
import com.bukkit.mcteam.gson.stream.JsonToken;
import com.bukkit.mcteam.gson.stream.JsonWriter;
import com.bukkit.mcteam.gson.stream.MalformedJsonException;
import java.io.IOException;
import java.io.Reader;
import java.io.StringReader;
import java.io.StringWriter;
import java.io.Writer;
import java.lang.reflect.Modifier;
import java.lang.reflect.Type;
import java.util.LinkedList;
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.bukkit.mcteam.gson.reflect.TypeToken
*
* @author Inderjeet Singh
* @author Joel Leitch
*/
public final class Gson {
//TODO(inder): get rid of all the registerXXX methods and take all such parameters in the
// constructor instead. At the minimum, mark those methods private.
private static final String NULL_STRING = "null";
static final boolean DEFAULT_JSON_NON_EXECUTABLE = false;
// Default instances of plug-ins
static final AnonymousAndLocalClassExclusionStrategy DEFAULT_ANON_LOCAL_CLASS_EXCLUSION_STRATEGY =
new AnonymousAndLocalClassExclusionStrategy();
static final SyntheticFieldExclusionStrategy DEFAULT_SYNTHETIC_FIELD_EXCLUSION_STRATEGY =
new SyntheticFieldExclusionStrategy(true);
static final ModifierBasedExclusionStrategy DEFAULT_MODIFIER_BASED_EXCLUSION_STRATEGY =
new ModifierBasedExclusionStrategy(new int[] { Modifier.TRANSIENT, Modifier.STATIC });
static final FieldNamingStrategy2 DEFAULT_NAMING_POLICY =
new SerializedNameAnnotationInterceptingNamingPolicy(new JavaFieldNamingPolicy());
private static final ExclusionStrategy DEFAULT_EXCLUSION_STRATEGY =
createExclusionStrategy(VersionConstants.IGNORE_VERSIONS);
private static final String JSON_NON_EXECUTABLE_PREFIX = ")]}'\n";
private final ExclusionStrategy serializationStrategy;
private final ExclusionStrategy deserializationStrategy;
private final FieldNamingStrategy2 fieldNamingPolicy;
private final MappedObjectConstructor objectConstructor;
/** Map containing Type or Class objects as keys */
private final ParameterizedTypeHandlerMap<JsonSerializer<?>> serializers;
/** Map containing Type or Class objects as keys */
private final ParameterizedTypeHandlerMap<JsonDeserializer<?>> deserializers;
private final boolean serializeNulls;
private final boolean htmlSafe;
private final boolean generateNonExecutableJson;
private final boolean prettyPrinting;
/**
* 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.bukkit.mcteam.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.bukkit.mcteam.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(DEFAULT_EXCLUSION_STRATEGY, DEFAULT_EXCLUSION_STRATEGY, DEFAULT_NAMING_POLICY,
new MappedObjectConstructor(DefaultTypeAdapters.getDefaultInstanceCreators()),
false, DefaultTypeAdapters.getDefaultSerializers(),
DefaultTypeAdapters.getDefaultDeserializers(), DEFAULT_JSON_NON_EXECUTABLE, true, false);
}
Gson(ExclusionStrategy serializationStrategy, ExclusionStrategy deserializationStrategy,
FieldNamingStrategy2 fieldNamingPolicy, MappedObjectConstructor objectConstructor,
boolean serializeNulls, ParameterizedTypeHandlerMap<JsonSerializer<?>> serializers,
ParameterizedTypeHandlerMap<JsonDeserializer<?>> deserializers,
boolean generateNonExecutableGson, boolean htmlSafe, boolean prettyPrinting) {
this.serializationStrategy = serializationStrategy;
this.deserializationStrategy = deserializationStrategy;
this.fieldNamingPolicy = fieldNamingPolicy;
this.objectConstructor = objectConstructor;
this.serializeNulls = serializeNulls;
this.serializers = serializers;
this.deserializers = deserializers;
this.generateNonExecutableJson = generateNonExecutableGson;
this.htmlSafe = htmlSafe;
this.prettyPrinting = prettyPrinting;
}
private ObjectNavigatorFactory createDefaultObjectNavigatorFactory(ExclusionStrategy strategy) {
return new ObjectNavigatorFactory(strategy, fieldNamingPolicy);
}
private static ExclusionStrategy createExclusionStrategy(double version) {
List<ExclusionStrategy> strategies = new LinkedList<ExclusionStrategy>();
strategies.add(DEFAULT_ANON_LOCAL_CLASS_EXCLUSION_STRATEGY);
strategies.add(DEFAULT_SYNTHETIC_FIELD_EXCLUSION_STRATEGY);
strategies.add(DEFAULT_MODIFIER_BASED_EXCLUSION_STRATEGY);
if (version != VersionConstants.IGNORE_VERSIONS) {
strategies.add(new VersionExclusionStrategy(version));
}
return new DisjunctionExclusionStrategy(strategies);
}
/**
* 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.createJsonNull();
}
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.bukkit.mcteam.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) {
if (src == null) {
return JsonNull.createJsonNull();
}
JsonSerializationContextDefault context = new JsonSerializationContextDefault(
createDefaultObjectNavigatorFactory(serializationStrategy), serializeNulls, serializers);
return context.serialize(src, typeOfSrc, true);
}
/**
* 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 serializeNulls ? NULL_STRING : "";
}
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.bukkit.mcteam.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(toJsonTree(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 {
try {
if (src != null) {
toJson(src, src.getClass(), writer);
} else if (serializeNulls) {
writeOutNullString(writer);
}
} catch (IOException ioe) {
throw new RuntimeException(ioe);
}
}
/**
* 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.bukkit.mcteam.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 {
JsonElement jsonElement = toJsonTree(src, typeOfSrc);
toJson(jsonElement, writer);
}
/**
* 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
*/
public void toJson(Object src, Type typeOfSrc, JsonWriter writer) throws JsonIOException {
toJson(toJsonTree(src, typeOfSrc), writer);
}
/**
* 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 {
if (generateNonExecutableJson) {
writer.append(JSON_NON_EXECUTABLE_PREFIX);
}
JsonWriter jsonWriter = new JsonWriter(Streams.writerForAppendable(writer));
if (prettyPrinting) {
jsonWriter.setIndent(" ");
}
toJson(jsonElement, jsonWriter);
} catch (IOException e) {
throw new RuntimeException(e);
}
}
/**
* 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);
try {
Streams.write(jsonElement, serializeNulls, writer);
} catch (IOException e) {
throw new JsonIOException(e);
} finally {
writer.setLenient(oldLenient);
writer.setHtmlSafe(oldHtmlSafe);
}
}
/**
* 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.bukkit.mcteam.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.bukkit.mcteam.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
*/
public <T> T fromJson(Reader json, Type typeOfT) throws JsonIOException, JsonSyntaxException {
JsonReader jsonReader = new JsonReader(json);
T object = this.<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 oldLenient = reader.isLenient();
reader.setLenient(true);
try {
JsonElement root = Streams.parse(reader);
return (T) fromJson(root, typeOfT);
} 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.bukkit.mcteam.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;
}
JsonDeserializationContext context = new JsonDeserializationContextDefault(
createDefaultObjectNavigatorFactory(deserializationStrategy), deserializers,
objectConstructor);
T target = (T) context.deserialize(json, typeOfT);
return target;
}
/**
* Appends the {@link #NULL_STRING} to the {@code writer} object.
*
* @param writer the object to append the null value to
*/
private void writeOutNullString(Appendable writer) throws IOException {
writer.append(NULL_STRING);
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder("{")
.append("serializeNulls:").append(serializeNulls)
.append(",serializers:").append(serializers)
.append(",deserializers:").append(deserializers)
// using the name instanceCreator instead of ObjectConstructor since the users of Gson are
// more familiar with the concept of Instance Creators. Moreover, the objectConstructor is
// just a utility class around instance creators, and its toString() only displays them.
.append(",instanceCreators:").append(objectConstructor)
.append("}");
return sb.toString();
}
}

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@ -0,0 +1,570 @@
/*
* 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.bukkit.mcteam.gson;
import java.lang.reflect.Type;
import java.text.DateFormat;
import java.util.Collection;
import java.util.Date;
import java.util.HashSet;
import java.util.LinkedList;
import java.util.List;
import com.bukkit.mcteam.gson.DefaultTypeAdapters.DefaultDateTypeAdapter;
/**
* <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())
* .serializeNulls()
* .setDateFormat(DateFormat.LONG)
* .setFieldNamingPolicy(FieldNamingPolicy.UPPER_CAMEL_CASE)
* .setPrettyPrinting()
* .setVersion(1.0)
* .create();
* </pre></p>
*
* <p>NOTE: the order of invocation of configuration methods does not matter.</p>
*
* @author Inderjeet Singh
* @author Joel Leitch
*/
public final class GsonBuilder {
private static final InnerClassExclusionStrategy innerClassExclusionStrategy =
new InnerClassExclusionStrategy();
private static final ExposeAnnotationSerializationExclusionStrategy
exposeAnnotationSerializationExclusionStrategy =
new ExposeAnnotationSerializationExclusionStrategy();
private static final ExposeAnnotationDeserializationExclusionStrategy
exposeAnnotationDeserializationExclusionStrategy =
new ExposeAnnotationDeserializationExclusionStrategy();
private final Collection<ExclusionStrategy> exclusionStrategies =
new HashSet<ExclusionStrategy>();
private double ignoreVersionsAfter;
private ModifierBasedExclusionStrategy modifierBasedExclusionStrategy;
private boolean serializeInnerClasses;
private boolean excludeFieldsWithoutExposeAnnotation;
private LongSerializationPolicy longSerializationPolicy;
private FieldNamingStrategy2 fieldNamingPolicy;
private final ParameterizedTypeHandlerMap<InstanceCreator<?>> instanceCreators;
private final ParameterizedTypeHandlerMap<JsonSerializer<?>> serializers;
private final ParameterizedTypeHandlerMap<JsonDeserializer<?>> deserializers;
private boolean serializeNulls;
private String datePattern;
private int dateStyle;
private int timeStyle;
private boolean serializeSpecialFloatingPointValues;
private boolean escapeHtmlChars;
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() {
// add default exclusion strategies
exclusionStrategies.add(Gson.DEFAULT_ANON_LOCAL_CLASS_EXCLUSION_STRATEGY);
exclusionStrategies.add(Gson.DEFAULT_SYNTHETIC_FIELD_EXCLUSION_STRATEGY);
// setup default values
ignoreVersionsAfter = VersionConstants.IGNORE_VERSIONS;
serializeInnerClasses = true;
prettyPrinting = false;
escapeHtmlChars = true;
modifierBasedExclusionStrategy = Gson.DEFAULT_MODIFIER_BASED_EXCLUSION_STRATEGY;
excludeFieldsWithoutExposeAnnotation = false;
longSerializationPolicy = LongSerializationPolicy.DEFAULT;
fieldNamingPolicy = Gson.DEFAULT_NAMING_POLICY;
instanceCreators = new ParameterizedTypeHandlerMap<InstanceCreator<?>>();
serializers = new ParameterizedTypeHandlerMap<JsonSerializer<?>>();
deserializers = new ParameterizedTypeHandlerMap<JsonDeserializer<?>>();
serializeNulls = false;
dateStyle = DateFormat.DEFAULT;
timeStyle = DateFormat.DEFAULT;
serializeSpecialFloatingPointValues = false;
generateNonExecutableJson = false;
}
/**
* 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) {
this.ignoreVersionsAfter = 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) {
modifierBasedExclusionStrategy = new ModifierBasedExclusionStrategy(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.bukkit.mcteam.gson.annotations.Expose} annotation.
*
* @return a reference to this {@code GsonBuilder} object to fulfill the "Builder" pattern
*/
public GsonBuilder excludeFieldsWithoutExposeAnnotation() {
excludeFieldsWithoutExposeAnnotation = true;
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;
}
/**
* 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() {
serializeInnerClasses = false;
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) {
return setFieldNamingStrategy(namingConvention.getFieldNamingPolicy());
}
/**
* 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) {
return setFieldNamingStrategy(new FieldNamingStrategy2Adapter(fieldNamingStrategy));
}
/**
* 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
*/
GsonBuilder setFieldNamingStrategy(FieldNamingStrategy2 fieldNamingStrategy) {
this.fieldNamingPolicy =
new SerializedNameAnnotationInterceptingNamingPolicy(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) {
exclusionStrategies.add(strategy);
}
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>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 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 an instance creator,
* serializer or deserializer 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 InstanceCreator},
* {@link JsonSerializer}, and a {@link JsonDeserializer} interfaces.
* @return a reference to this {@code GsonBuilder} object to fulfill the "Builder" pattern
*/
public GsonBuilder registerTypeAdapter(Type type, Object typeAdapter) {
Preconditions.checkArgument(typeAdapter instanceof JsonSerializer<?>
|| typeAdapter instanceof JsonDeserializer<?> || typeAdapter instanceof InstanceCreator<?>);
if (typeAdapter instanceof InstanceCreator<?>) {
registerInstanceCreator(type, (InstanceCreator<?>) typeAdapter);
}
if (typeAdapter instanceof JsonSerializer<?>) {
registerSerializer(type, (JsonSerializer<?>) typeAdapter);
}
if (typeAdapter instanceof JsonDeserializer<?>) {
registerDeserializer(type, (JsonDeserializer<?>) typeAdapter);
}
return this;
}
/**
* Configures Gson to use a custom {@link InstanceCreator} for the specified type. If an instance
* creator was previously registered for the specified class, it is overwritten. Since this method
* takes a type instead of a Class object, it can be used to register a specific handler for a
* generic type corresponding to a raw type.
*
* @param <T> the type for which instance creator is being registered
* @param typeOfT The Type definition for T
* @param instanceCreator the instance creator for T
* @return a reference to this {@code GsonBuilder} object to fulfill the "Builder" pattern
*/
private <T> GsonBuilder registerInstanceCreator(Type typeOfT,
InstanceCreator<? extends T> instanceCreator) {
instanceCreators.register(typeOfT, instanceCreator);
return this;
}
/**
* Configures Gson to use a custom JSON serializer for the specified type. You should use this
* method if you want to register different serializers for different generic types corresponding
* to a raw type.
*
* @param <T> the type for which the serializer is being registered
* @param typeOfT The type definition for T
* @param serializer the custom serializer
* @return a reference to this {@code GsonBuilder} object to fulfill the "Builder" pattern
*/
private <T> GsonBuilder registerSerializer(Type typeOfT, final JsonSerializer<T> serializer) {
serializers.register(typeOfT, serializer);
return this;
}
/**
* Configures Gson to use a custom JSON deserializer for the specified type. You should use this
* method if you want to register different deserializers for different generic types
* corresponding to a raw type.
*
* @param <T> the type for which the deserializer is being registered
* @param typeOfT The type definition for T
* @param deserializer the custom deserializer
* @return a reference to this {@code GsonBuilder} object to fulfill the "Builder" pattern
*/
private <T> GsonBuilder registerDeserializer(Type typeOfT, JsonDeserializer<T> deserializer) {
deserializers.register(typeOfT, new JsonDeserializerExceptionWrapper<T>(deserializer));
return this;
}
/**
* Configures Gson for custom serialization or deserialization for an inheritance type hierarchy.
* This method combines the registration of an {@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 an instance creator, serializer or deserializer was previously registered for the specified
* type hierarchy, it is overwritten. If an instance creator, serializer or deserializer 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 the {@link InstanceCreator},
* {@link JsonSerializer}, and a {@link JsonDeserializer} interfaces.
* @return a reference to this {@code GsonBuilder} object to fulfill the "Builder" pattern
* @since 1.7
*/
GsonBuilder registerTypeHierarchyAdapter(Class<?> baseType, Object typeAdapter) {
Preconditions.checkArgument(typeAdapter instanceof JsonSerializer<?>
|| typeAdapter instanceof JsonDeserializer<?> || typeAdapter instanceof InstanceCreator<?>);
if (typeAdapter instanceof InstanceCreator<?>) {
registerInstanceCreatorForTypeHierarchy(baseType, (InstanceCreator<?>) typeAdapter);
}
if (typeAdapter instanceof JsonSerializer<?>) {
registerSerializerForTypeHierarchy(baseType, (JsonSerializer<?>) typeAdapter);
}
if (typeAdapter instanceof JsonDeserializer<?>) {
registerDeserializerForTypeHierarchy(baseType, (JsonDeserializer<?>) typeAdapter);
}
return this;
}
private <T> GsonBuilder registerInstanceCreatorForTypeHierarchy(Class<?> classOfT,
InstanceCreator<? extends T> instanceCreator) {
instanceCreators.registerForTypeHierarchy(classOfT, instanceCreator);
return this;
}
private <T> GsonBuilder registerSerializerForTypeHierarchy(Class<?> classOfT,
final JsonSerializer<T> serializer) {
serializers.registerForTypeHierarchy(classOfT, serializer);
return this;
}
private <T> GsonBuilder registerDeserializerForTypeHierarchy(Class<?> classOfT,
JsonDeserializer<T> deserializer) {
deserializers.registerForTypeHierarchy(classOfT,
new JsonDeserializerExceptionWrapper<T>(deserializer));
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<ExclusionStrategy> serializationStrategies =
new LinkedList<ExclusionStrategy>(exclusionStrategies);
List<ExclusionStrategy> deserializationStrategies =
new LinkedList<ExclusionStrategy>(exclusionStrategies);
serializationStrategies.add(modifierBasedExclusionStrategy);
deserializationStrategies.add(modifierBasedExclusionStrategy);
if (!serializeInnerClasses) {
serializationStrategies.add(innerClassExclusionStrategy);
deserializationStrategies.add(innerClassExclusionStrategy);
}
if (ignoreVersionsAfter != VersionConstants.IGNORE_VERSIONS) {
serializationStrategies.add(new VersionExclusionStrategy(ignoreVersionsAfter));
deserializationStrategies.add(new VersionExclusionStrategy(ignoreVersionsAfter));
}
if (excludeFieldsWithoutExposeAnnotation) {
serializationStrategies.add(exposeAnnotationSerializationExclusionStrategy);
deserializationStrategies.add(exposeAnnotationDeserializationExclusionStrategy);
}
ExclusionStrategy serializationExclusionStrategy =
new DisjunctionExclusionStrategy(serializationStrategies);
ExclusionStrategy deserializationExclusionStrategy =
new DisjunctionExclusionStrategy(deserializationStrategies);
ParameterizedTypeHandlerMap<JsonSerializer<?>> customSerializers = serializers.copyOf();
ParameterizedTypeHandlerMap<JsonDeserializer<?>> customDeserializers = deserializers.copyOf();
addTypeAdaptersForDate(datePattern, dateStyle, timeStyle, customSerializers,
customDeserializers);
customSerializers.registerIfAbsent(DefaultTypeAdapters.getDefaultSerializers(
serializeSpecialFloatingPointValues, longSerializationPolicy));
customDeserializers.registerIfAbsent(DefaultTypeAdapters.getDefaultDeserializers());
ParameterizedTypeHandlerMap<InstanceCreator<?>> customInstanceCreators =
instanceCreators.copyOf();
customInstanceCreators.registerIfAbsent(DefaultTypeAdapters.getDefaultInstanceCreators());
customSerializers.makeUnmodifiable();
customDeserializers.makeUnmodifiable();
instanceCreators.makeUnmodifiable();
MappedObjectConstructor objConstructor = new MappedObjectConstructor(customInstanceCreators);
Gson gson = new Gson(serializationExclusionStrategy, deserializationExclusionStrategy,
fieldNamingPolicy, objConstructor, serializeNulls, customSerializers,
customDeserializers, generateNonExecutableJson, escapeHtmlChars, prettyPrinting);
return gson;
}
private static void addTypeAdaptersForDate(String datePattern, int dateStyle, int timeStyle,
ParameterizedTypeHandlerMap<JsonSerializer<?>> serializers,
ParameterizedTypeHandlerMap<JsonDeserializer<?>> deserializers) {
DefaultDateTypeAdapter dateTypeAdapter = null;
if (datePattern != null && !"".equals(datePattern.trim())) {
dateTypeAdapter = new DefaultDateTypeAdapter(datePattern);
} else if (dateStyle != DateFormat.DEFAULT && timeStyle != DateFormat.DEFAULT) {
dateTypeAdapter = new DefaultDateTypeAdapter(dateStyle, timeStyle);
}
if (dateTypeAdapter != null) {
if (!serializers.hasSpecificHandlerFor(Date.class)) {
serializers.register(Date.class, dateTypeAdapter);
}
if (!deserializers.hasSpecificHandlerFor(Date.class)) {
deserializers.register(Date.class, dateTypeAdapter);
}
}
}
}

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/*
* 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.bukkit.mcteam.gson;
import java.lang.reflect.Modifier;
/**
* Strategy for excluding inner classes.
*
* @author Joel Leitch
*/
class InnerClassExclusionStrategy implements ExclusionStrategy {
public boolean shouldSkipField(FieldAttributes f) {
return isInnerClass(f.getDeclaredClass());
}
public boolean shouldSkipClass(Class<?> clazz) {
return isInnerClass(clazz);
}
private boolean isInnerClass(Class<?> clazz) {
return clazz.isMemberClass() && !isStatic(clazz);
}
private boolean isStatic(Class<?> clazz) {
return (clazz.getModifiers() & Modifier.STATIC) != 0;
}
}

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/*
* 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.bukkit.mcteam.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);
}

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/*
* 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.bukkit.mcteam.gson;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.util.Collection;
/**
* A simple implementation of the {@link FieldNamingStrategy2} interface such that it does not
* perform any string translation of the incoming field name.
*
* <p>The following is an example:</p>
*
* <pre>
* class IntWrapper {
* public int integerField = 0;
* }
*
* JavaFieldNamingPolicy policy = new JavaFieldNamingPolicy();
* String translatedFieldName =
* policy.translateName(IntWrapper.class.getField("integerField"));
*
* assert("integerField".equals(translatedFieldName));
* </pre>
*
* <p>This is the default {@link FieldNamingStrategy2} used by Gson.</p>
*
* @author Joel Leitch
*/
final class JavaFieldNamingPolicy extends RecursiveFieldNamingPolicy {
@Override
protected String translateName(String target, Type fieldType, Collection<Annotation> annotations) {
return target;
}
}

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/*
* 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.bukkit.mcteam.gson;
import java.io.IOException;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.util.ArrayList;
import java.util.Collections;
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.createJsonNull();
}
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);
}
/**
* Reverses the elements of the array.
*/
void reverse() {
Collections.reverse(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();
}
/**
* convenience method to get this array as an Object if it contains a single element.
*
* @return get this element as an Object 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 Object.
* @throws IllegalStateException if the array has more than one element.
*/
@Override
Object getAsObject() {
if (elements.size() == 1) {
return elements.get(0).getAsObject();
}
throw new IllegalStateException();
}
@Override
protected void toString(Appendable sb, Escaper escaper) throws IOException {
sb.append('[');
boolean first = true;
for (JsonElement element : elements) {
if (first) {
first = false;
} else {
sb.append(',');
}
element.toString(sb, escaper);
}
sb.append(']');
}
}

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/*
* 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.bukkit.mcteam.gson;
import java.lang.reflect.Array;
import java.lang.reflect.Type;
/**
* A visitor that populates fields of an object with data from its equivalent
* JSON representation
*
* @author Inderjeet Singh
* @author Joel Leitch
*/
final class JsonArrayDeserializationVisitor<T> extends JsonDeserializationVisitor<T> {
JsonArrayDeserializationVisitor(JsonArray jsonArray, Type arrayType,
ObjectNavigatorFactory factory, ObjectConstructor objectConstructor,
ParameterizedTypeHandlerMap<JsonDeserializer<?>> deserializers,
JsonDeserializationContext context) {
super(jsonArray, arrayType, factory, objectConstructor, deserializers, context);
}
@Override
@SuppressWarnings("unchecked")
protected T constructTarget() {
TypeInfo typeInfo = new TypeInfo(targetType);
if (!json.isJsonArray()) {
throw new JsonParseException("Expecting array found: " + json);
}
JsonArray jsonArray = json.getAsJsonArray();
if (typeInfo.isArray()) {
TypeInfoArray arrayTypeInfo = TypeInfoFactory.getTypeInfoForArray(targetType);
// We know that we are getting back an array of the required type, so
// this typecasting is safe.
return (T) objectConstructor.constructArray(arrayTypeInfo.getSecondLevelType(),
jsonArray.size());
}
// is a collection
return (T) objectConstructor.construct(typeInfo.getRawClass());
}
public void visitArray(Object array, Type arrayType) {
if (!json.isJsonArray()) {
throw new JsonParseException("Expecting array found: " + json);
}
JsonArray jsonArray = json.getAsJsonArray();
TypeInfoArray arrayTypeInfo = TypeInfoFactory.getTypeInfoForArray(arrayType);
for (int i = 0; i < jsonArray.size(); i++) {
JsonElement jsonChild = jsonArray.get(i);
Object child;
if (jsonChild == null || jsonChild.isJsonNull()) {
child = null;
} else if (jsonChild instanceof JsonObject) {
child = visitChildAsObject(arrayTypeInfo.getComponentRawType(), jsonChild);
} else if (jsonChild instanceof JsonArray) {
child = visitChildAsArray(arrayTypeInfo.getSecondLevelType(), jsonChild.getAsJsonArray());
} else if (jsonChild instanceof JsonPrimitive) {
child = visitChildAsObject(arrayTypeInfo.getComponentRawType(),
jsonChild.getAsJsonPrimitive());
} else {
throw new IllegalStateException();
}
Array.set(array, i, child);
}
}
// We should not implement any other method from Visitor interface since
// all other methods should be invoked on JsonObjectDeserializationVisitor
// instead.
public void startVisitingObject(Object node) {
throw new JsonParseException("Expecting array but found object: " + node);
}
public void visitArrayField(FieldAttributes f, Type typeOfF, Object obj) {
throw new JsonParseException("Expecting array but found array field " + f.getName() + ": "
+ obj);
}
public void visitObjectField(FieldAttributes f, Type typeOfF, Object obj) {
throw new JsonParseException("Expecting array but found object field " + f.getName() + ": "
+ obj);
}
public boolean visitFieldUsingCustomHandler(FieldAttributes f, Type actualTypeOfField, Object parent) {
throw new JsonParseException("Expecting array but found field " + f.getName() + ": "
+ parent);
}
public void visitPrimitive(Object primitive) {
throw new JsonParseException(
"Type information is unavailable, and the target is not a primitive: " + json);
}
}

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/*
* 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.bukkit.mcteam.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;
}

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/*
* 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.bukkit.mcteam.gson;
import java.lang.reflect.Type;
/**
* implementation of a deserialization context for Gson
*
* @author Inderjeet Singh
*/
final class JsonDeserializationContextDefault implements JsonDeserializationContext {
private final ObjectNavigatorFactory navigatorFactory;
private final ParameterizedTypeHandlerMap<JsonDeserializer<?>> deserializers;
private final MappedObjectConstructor objectConstructor;
JsonDeserializationContextDefault(ObjectNavigatorFactory navigatorFactory,
ParameterizedTypeHandlerMap<JsonDeserializer<?>> deserializers,
MappedObjectConstructor objectConstructor) {
this.navigatorFactory = navigatorFactory;
this.deserializers = deserializers;
this.objectConstructor = objectConstructor;
}
ObjectConstructor getObjectConstructor() {
return objectConstructor;
}
@SuppressWarnings("unchecked")
public <T> T deserialize(JsonElement json, Type typeOfT) throws JsonParseException {
if (json == null || json.isJsonNull()) {
return null;
} else if (json.isJsonArray()) {
return (T) fromJsonArray(typeOfT, json.getAsJsonArray(), this);
} else if (json.isJsonObject()) {
return (T) fromJsonObject(typeOfT, json.getAsJsonObject(), this);
} else if (json.isJsonPrimitive()) {
return (T) fromJsonPrimitive(typeOfT, json.getAsJsonPrimitive(), this);
} else {
throw new JsonParseException("Failed parsing JSON source: " + json + " to Json");
}
}
private <T> T fromJsonArray(Type arrayType, JsonArray jsonArray,
JsonDeserializationContext context) throws JsonParseException {
JsonArrayDeserializationVisitor<T> visitor = new JsonArrayDeserializationVisitor<T>(
jsonArray, arrayType, navigatorFactory, objectConstructor, deserializers, context);
ObjectNavigator on = navigatorFactory.create(new ObjectTypePair(null, arrayType, true));
on.accept(visitor);
return visitor.getTarget();
}
private <T> T fromJsonObject(Type typeOfT, JsonObject jsonObject,
JsonDeserializationContext context) throws JsonParseException {
JsonObjectDeserializationVisitor<T> visitor = new JsonObjectDeserializationVisitor<T>(
jsonObject, typeOfT, navigatorFactory, objectConstructor, deserializers, context);
ObjectNavigator on = navigatorFactory.create(new ObjectTypePair(null, typeOfT, true));
on.accept(visitor);
return visitor.getTarget();
}
@SuppressWarnings("unchecked")
private <T> T fromJsonPrimitive(Type typeOfT, JsonPrimitive json,
JsonDeserializationContext context) throws JsonParseException {
JsonObjectDeserializationVisitor<T> visitor = new JsonObjectDeserializationVisitor<T>(
json, typeOfT, navigatorFactory, objectConstructor, deserializers, context);
ObjectNavigator on =
navigatorFactory.create(new ObjectTypePair(json.getAsObject(), typeOfT, true));
on.accept(visitor);
Object target = visitor.getTarget();
return (T) target;
}
}

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/*
* 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.bukkit.mcteam.gson;
import java.lang.reflect.Type;
/**
* Abstract data value container for the {@link ObjectNavigator.Visitor}
* implementations. This class exposes the {@link #getTarget()} method
* which returns the class that was visited by this object.
*
* @author Inderjeet Singh
* @author Joel Leitch
*/
abstract class JsonDeserializationVisitor<T> implements ObjectNavigator.Visitor {
protected final ObjectNavigatorFactory factory;
protected final ObjectConstructor objectConstructor;
protected final ParameterizedTypeHandlerMap<JsonDeserializer<?>> deserializers;
protected T target;
protected final JsonElement json;
protected final Type targetType;
protected final JsonDeserializationContext context;
protected boolean constructed;
public JsonDeserializationVisitor(JsonElement json, Type targetType,
ObjectNavigatorFactory factory, ObjectConstructor objectConstructor,
ParameterizedTypeHandlerMap<JsonDeserializer<?>> deserializers,
JsonDeserializationContext context) {
Preconditions.checkNotNull(json);
this.targetType = targetType;
this.factory = factory;
this.objectConstructor = objectConstructor;
this.deserializers = deserializers;
this.json = json;
this.context = context;
this.constructed = false;
}
public T getTarget() {
if (!constructed) {
target = constructTarget();
constructed = true;
}
return target;
}
protected abstract T constructTarget();
public void start(ObjectTypePair node) {
}
public void end(ObjectTypePair node) {
}
@SuppressWarnings("unchecked")
public final boolean visitUsingCustomHandler(ObjectTypePair objTypePair) {
Pair<JsonDeserializer<?>, ObjectTypePair> pair = objTypePair.getMatchingHandler(deserializers);
if (pair == null) {
return false;
}
Object value = invokeCustomDeserializer(json, pair);
target = (T) value;
constructed = true;
return true;
}
protected Object invokeCustomDeserializer(JsonElement element,
Pair<JsonDeserializer<?>, ObjectTypePair> pair) {
if (element == null || element.isJsonNull()) {
return null;
}
Type objType = pair.second.type;
return (pair.first).deserialize(element, objType, context);
}
final Object visitChildAsObject(Type childType, JsonElement jsonChild) {
JsonDeserializationVisitor<?> childVisitor =
new JsonObjectDeserializationVisitor<Object>(jsonChild, childType,
factory, objectConstructor, deserializers, context);
return visitChild(childType, childVisitor);
}
final Object visitChildAsArray(Type childType, JsonArray jsonChild) {
JsonDeserializationVisitor<?> childVisitor =
new JsonArrayDeserializationVisitor<Object>(jsonChild.getAsJsonArray(), childType,
factory, objectConstructor, deserializers, context);
return visitChild(childType, childVisitor);
}
private Object visitChild(Type type, JsonDeserializationVisitor<?> childVisitor) {
ObjectNavigator on = factory.create(new ObjectTypePair(null, type, false));
on.accept(childVisitor);
// the underlying object may have changed during the construction phase
// This happens primarily because of custom deserializers
return childVisitor.getTarget();
}
}

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/*
* 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.bukkit.mcteam.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 fromJson(JsonElement json, Type typeOfT, JsonDeserializationContext context)
* throws JsonParseException {
* return (Id) 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>
*
* @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;
}

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/*
* 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.bukkit.mcteam.gson;
import java.lang.reflect.Type;
/**
* Decorators a {@code JsonDeserializer} instance with exception handling. This wrapper class
* ensures that a {@code JsonDeserializer} will not propagate any exception other than a
* {@link JsonParseException}.
*
* @param <T> type of the deserializer being wrapped.
*
* @author Inderjeet Singh
* @author Joel Leitch
*/
class JsonDeserializerExceptionWrapper<T> implements JsonDeserializer<T> {
private final JsonDeserializer<T> delegate;
/**
* Returns a wrapped {@link JsonDeserializer} object that has been decorated with
* {@link JsonParseException} handling.
*
* @param delegate the {@code JsonDeserializer} instance to be wrapped.
* @throws IllegalArgumentException if {@code delegate} is {@code null}.
*/
JsonDeserializerExceptionWrapper(JsonDeserializer<T> delegate) {
Preconditions.checkNotNull(delegate);
this.delegate = delegate;
}
public T deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
throws JsonParseException {
try {
return delegate.deserialize(json, typeOfT, context);
} catch (JsonParseException e) {
// just rethrow the exception
throw e;
} catch (Exception e) {
// rethrow as a JsonParseException
StringBuilder errorMsg = new StringBuilder()
.append("The JsonDeserializer ")
.append(delegate)
.append(" failed to deserialized json object ")
.append(json)
.append(" given the type ")
.append(typeOfT);
throw new JsonParseException(errorMsg.toString(), e);
}
}
@Override
public String toString() {
return delegate.toString();
}
}

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/*
* 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.bukkit.mcteam.gson;
import java.io.IOException;
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 {
private static final Escaper BASIC_ESCAPER = new Escaper(false);
/**
* 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("This is not a JSON Object.");
}
/**
* 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();
}
/**
* 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();
}
/**
* 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();
}
/**
* 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();
}
/**
* 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();
}
/**
* 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();
}
/**
* 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();
}
/**
* 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();
}
/**
* 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();
}
/**
* 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();
}
/**
* 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();
}
/**
* 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();
}
/**
* 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();
}
/**
* convenience method to get this element as an {@link Object} value.
*
* @return get this element as an Object value.
* @throws ClassCastException if the element is of not a {@link JsonPrimitive} and is not a valid
* Object value.
* @throws IllegalStateException if the element is of the type {@link JsonArray} but contains
* more than a single element.
*/
Object getAsObject() {
throw new UnsupportedOperationException();
}
/**
* Returns a String representation of this element.
*
* @return String the string representation of this element.
*/
@Override
public String toString() {
try {
StringBuilder sb = new StringBuilder();
toString(sb, BASIC_ESCAPER);
return sb.toString();
} catch (IOException e) {
throw new RuntimeException(e);
}
}
protected abstract void toString(Appendable sb, Escaper escaper) throws IOException;
}

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/*
* 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.bukkit.mcteam.gson;
import java.io.IOException;
/**
* Definition of a visitor for a JsonElement tree.
*
* @author Inderjeet Singh
*/
interface JsonElementVisitor {
void visitPrimitive(JsonPrimitive primitive) throws IOException;
void visitNull() throws IOException;
void startArray(JsonArray array) throws IOException;
void visitArrayMember(JsonArray parent, JsonPrimitive member, boolean isFirst) throws IOException;
void visitArrayMember(JsonArray parent, JsonArray member, boolean isFirst) throws IOException;
void visitArrayMember(JsonArray parent, JsonObject member, boolean isFirst) throws IOException;
void visitNullArrayMember(JsonArray parent, boolean isFirst) throws IOException;
void endArray(JsonArray array) throws IOException;
void startObject(JsonObject object) throws IOException;
void visitObjectMember(JsonObject parent, String memberName, JsonPrimitive member,
boolean isFirst) throws IOException;
void visitObjectMember(JsonObject parent, String memberName, JsonArray member,
boolean isFirst) throws IOException;
void visitObjectMember(JsonObject parent, String memberName, JsonObject member,
boolean isFirst) throws IOException;
void visitNullObjectMember(JsonObject parent, String memberName,
boolean isFirst) throws IOException;
void endObject(JsonObject object) throws IOException;
}

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/*
* 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.bukkit.mcteam.gson;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* This class can be used to check the validity of a JSON field name.
*
* <p>The primary use of this object is to ensure that any Java fields that use the
* {@link com.bukkit.mcteam.gson.annotations.SerializedName} annotation is providing valid JSON
* field names. This will make the code fail-fast rather than letting the invalid
* field name propagate to the client and it fails to parse.</p>
*
* @author Joel Leitch
*/
class JsonFieldNameValidator {
private static final String COMMON_PATTERN = "[a-zA-Z][a-zA-Z0-9\\ \\$_\\-]*$";
private static final Pattern JSON_FIELD_NAME_PATTERN =
Pattern.compile("(^" + COMMON_PATTERN + ")|(^[\\$_]" + COMMON_PATTERN + ")");
/**
* Performs validation on the JSON field name to ensure it is a valid field name.
*
* @param fieldName the name of the field to validate
* @return {@code fieldName} if it is a valid JSON field name
* @throws IllegalArgumentException if the field name is an invalid JSON field name
*/
public String validate(String fieldName) {
Preconditions.checkNotNull(fieldName);
Preconditions.checkArgument(!"".equals(fieldName.trim()));
Matcher matcher = JSON_FIELD_NAME_PATTERN.matcher(fieldName);
if (!matcher.matches()) {
throw new IllegalArgumentException(fieldName + " is not a valid JSON field name.");
}
return fieldName;
}
}

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/*
* 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.bukkit.mcteam.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);
}
}

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/*
* 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.bukkit.mcteam.gson;
import java.io.IOException;
/**
* A class representing a Json {@code null} value.
*
* @author Inderjeet Singh
* @author Joel Leitch
* @since 1.2
*/
public final class JsonNull extends JsonElement {
private static final JsonNull INSTANCE = new JsonNull();
/**
* Creates a new JsonNull object.
*/
public JsonNull() {
// Do nothing
}
@Override
protected void toString(Appendable sb, Escaper escaper) throws IOException {
sb.append("null");
}
/**
* 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 other instanceof JsonNull;
}
/**
* Creation method used to return an instance of a {@link JsonNull}. To reduce the memory
* footprint, a single object has been created for this class; therefore the same instance is
* being returned for each invocation of this method. This method is kept private since we
* prefer the users to use {@link JsonNull#JsonNull()} which is similar to how other JsonElements
* are created. Note that all instances of JsonNull return true for {@link #equals(Object)}
* when compared to each other.
*
* @return a instance of a {@link JsonNull}
*/
static JsonNull createJsonNull() {
return INSTANCE;
}
}

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/*
* 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.bukkit.mcteam.gson;
import java.io.IOException;
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;
/**
* Creates an empty JsonObject.
*/
public JsonObject() {
members = new LinkedHashMap<String, JsonElement>();
}
/**
* 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) {
Preconditions.checkNotNull(property);
if (value == null) {
value = JsonNull.createJsonNull();
}
members.put(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.createJsonNull() : 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.createJsonNull() : 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
protected void toString(Appendable sb, Escaper escaper) throws IOException {
sb.append('{');
boolean first = true;
for (Map.Entry<String, JsonElement> entry : members.entrySet()) {
if (first) {
first = false;
} else {
sb.append(',');
}
sb.append('\"');
sb.append(escaper.escapeJsonString(entry.getKey()));
sb.append("\":");
entry.getValue().toString(sb, escaper);
}
sb.append('}');
}
}

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/*
* 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.bukkit.mcteam.gson;
import java.lang.reflect.Type;
/**
* A visitor that populates fields of an object with data from its equivalent
* JSON representation
*
* @author Inderjeet Singh
* @author Joel Leitch
*/
final class JsonObjectDeserializationVisitor<T> extends JsonDeserializationVisitor<T> {
JsonObjectDeserializationVisitor(JsonElement json, Type type,
ObjectNavigatorFactory factory, ObjectConstructor objectConstructor,
ParameterizedTypeHandlerMap<JsonDeserializer<?>> deserializers,
JsonDeserializationContext context) {
super(json, type, factory, objectConstructor, deserializers, context);
}
@Override
@SuppressWarnings("unchecked")
protected T constructTarget() {
return (T) objectConstructor.construct(targetType);
}
public void startVisitingObject(Object node) {
// do nothing
}
public void visitArray(Object array, Type componentType) {
// should not be called since this case should invoke JsonArrayDeserializationVisitor
throw new JsonParseException("Expecting object but found array: " + array);
}
public void visitObjectField(FieldAttributes f, Type typeOfF, Object obj) {
try {
if (!json.isJsonObject()) {
throw new JsonParseException("Expecting object found: " + json);
}
JsonObject jsonObject = json.getAsJsonObject();
String fName = getFieldName(f);
JsonElement jsonChild = jsonObject.get(fName);
if (jsonChild != null) {
Object child = visitChildAsObject(typeOfF, jsonChild);
f.set(obj, child);
} else {
f.set(obj, null);
}
} catch (IllegalAccessException e) {
throw new RuntimeException(e);
}
}
public void visitArrayField(FieldAttributes f, Type typeOfF, Object obj) {
try {
if (!json.isJsonObject()) {
throw new JsonParseException("Expecting object found: " + json);
}
JsonObject jsonObject = json.getAsJsonObject();
String fName = getFieldName(f);
JsonArray jsonChild = (JsonArray) jsonObject.get(fName);
if (jsonChild != null) {
Object array = visitChildAsArray(typeOfF, jsonChild);
f.set(obj, array);
} else {
f.set(obj, null);
}
} catch (IllegalAccessException e) {
throw new RuntimeException(e);
}
}
private String getFieldName(FieldAttributes f) {
FieldNamingStrategy2 namingPolicy = factory.getFieldNamingPolicy();
return namingPolicy.translateName(f);
}
public boolean visitFieldUsingCustomHandler(FieldAttributes f, Type declaredTypeOfField, Object parent) {
try {
String fName = getFieldName(f);
if (!json.isJsonObject()) {
throw new JsonParseException("Expecting object found: " + json);
}
JsonElement child = json.getAsJsonObject().get(fName);
TypeInfo typeInfo = new TypeInfo(declaredTypeOfField);
if (child == null) { // Child will be null if the field wasn't present in Json
return true;
} else if (child.isJsonNull()) {
if (!typeInfo.isPrimitive()) {
f.set(parent, null);
}
return true;
}
ObjectTypePair objTypePair = new ObjectTypePair(null, declaredTypeOfField, false);
Pair<JsonDeserializer<?>, ObjectTypePair> pair = objTypePair.getMatchingHandler(deserializers);
if (pair == null) {
return false;
}
Object value = invokeCustomDeserializer(child, pair);
if (value != null || !typeInfo.isPrimitive()) {
f.set(parent, value);
}
return true;
} catch (IllegalAccessException e) {
throw new RuntimeException();
}
}
@SuppressWarnings("unchecked")
public void visitPrimitive(Object primitive) {
if (!json.isJsonPrimitive()) {
throw new JsonParseException(
"Type information is unavailable, and the target object is not a primitive: " + json);
}
JsonPrimitive prim = json.getAsJsonPrimitive();
target = (T) prim.getAsObject();
}
}

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/*
* 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.bukkit.mcteam.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);
}
}

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/*
* 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.bukkit.mcteam.gson;
import com.bukkit.mcteam.gson.stream.JsonReader;
import com.bukkit.mcteam.gson.stream.JsonToken;
import com.bukkit.mcteam.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.createJsonNull();
}
throw e;
} finally {
json.setLenient(lenient);
}
}
}

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/*
* 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.bukkit.mcteam.gson;
import java.io.IOException;
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 static final BigInteger INTEGER_MAX = BigInteger.valueOf(Integer.MAX_VALUE);
private static final BigInteger LONG_MAX = BigInteger.valueOf(Long.MAX_VALUE);
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 {
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}.
* @throws ClassCastException if the value contained is not a valid boolean value.
*/
@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.
* @throws ClassCastException if the value contained is not a valid boolean value.
*/
@Override
public boolean getAsBoolean() {
return isBoolean() ? getAsBooleanWrapper().booleanValue() : 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 ClassCastException if the value contained is not a valid Number.
*/
@Override
public Number getAsNumber() {
return value instanceof String ? stringToNumber((String) value) : (Number) value;
}
static Number stringToNumber(String value) {
try {
long longValue = Long.parseLong(value);
if (longValue >= Integer.MIN_VALUE && longValue <= Integer.MAX_VALUE) {
return (int) longValue;
}
return longValue;
} catch (NumberFormatException ignored) {
}
try {
return new BigDecimal(value);
} catch (NumberFormatException ignored) {
return Double.parseDouble(value); // probably NaN, -Infinity or Infinity
}
}
/**
* 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.
* @throws ClassCastException if the value contained is not a valid 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 ClassCastException 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 ClassCastException 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 ClassCastException 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 ClassCastException 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 ClassCastException 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);
}
/**
* convenience method to get this element as an Object.
*
* @return get this element as an Object that can be converted to a suitable value.
*/
@Override
Object getAsObject() {
if (value instanceof BigInteger) {
BigInteger big = (BigInteger) value;
if (big.compareTo(INTEGER_MAX) < 0) {
return big.intValue();
} else if (big.compareTo(LONG_MAX) < 0) {
return big.longValue();
}
}
// No need to convert to float or double since those lose precision
return value;
}
@Override
protected void toString(Appendable sb, Escaper escaper) throws IOException {
if (isString()) {
sb.append('"');
sb.append(escaper.escapeJsonString(value.toString()));
sb.append('"');
} else {
sb.append(value.toString());
}
}
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 (isFloatingPoint(this)) {
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 (isFloatingPoint(this) && isFloatingPoint(other)) {
return getAsNumber().doubleValue() == other.getAsNumber().doubleValue();
}
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;
}
/**
* Returns true if the specified number is a floating point type (BigDecimal, double, float)
*/
private static boolean isFloatingPoint(JsonPrimitive primitive) {
if (primitive.value instanceof Number) {
Number number = (Number) primitive.value;
return number instanceof BigDecimal || number instanceof Double || number instanceof Float;
}
return false;
}
}

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/*
* 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.bukkit.mcteam.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);
}

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/*
* 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.bukkit.mcteam.gson;
import java.lang.reflect.Type;
/**
* An implementation of serialization context for Gson.
*
* @author Inderjeet Singh
*/
final class JsonSerializationContextDefault implements JsonSerializationContext {
private final ObjectNavigatorFactory factory;
private final ParameterizedTypeHandlerMap<JsonSerializer<?>> serializers;
private final boolean serializeNulls;
private final MemoryRefStack ancestors;
JsonSerializationContextDefault(ObjectNavigatorFactory factory, boolean serializeNulls,
ParameterizedTypeHandlerMap<JsonSerializer<?>> serializers) {
this.factory = factory;
this.serializeNulls = serializeNulls;
this.serializers = serializers;
this.ancestors = new MemoryRefStack();
}
public JsonElement serialize(Object src) {
if (src == null) {
return JsonNull.createJsonNull();
}
return serialize(src, src.getClass(), true);
}
public JsonElement serialize(Object src, Type typeOfSrc) {
return serialize(src, typeOfSrc, true);
}
public JsonElement serialize(Object src, Type typeOfSrc, boolean preserveType) {
ObjectNavigator on = factory.create(new ObjectTypePair(src, typeOfSrc, preserveType));
JsonSerializationVisitor visitor =
new JsonSerializationVisitor(factory, serializeNulls, serializers, this, ancestors);
on.accept(visitor);
return visitor.getJsonElement();
}
}

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/*
* 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.bukkit.mcteam.gson;
import java.lang.reflect.Array;
import java.lang.reflect.Type;
/**
* A visitor that adds JSON elements corresponding to each field of an object
*
* @author Inderjeet Singh
* @author Joel Leitch
*/
final class JsonSerializationVisitor implements ObjectNavigator.Visitor {
private final ObjectNavigatorFactory factory;
private final ParameterizedTypeHandlerMap<JsonSerializer<?>> serializers;
private final boolean serializeNulls;
private final JsonSerializationContext context;
private final MemoryRefStack ancestors;
private JsonElement root;
JsonSerializationVisitor(ObjectNavigatorFactory factory, boolean serializeNulls,
ParameterizedTypeHandlerMap<JsonSerializer<?>> serializers, JsonSerializationContext context,
MemoryRefStack ancestors) {
this.factory = factory;
this.serializeNulls = serializeNulls;
this.serializers = serializers;
this.context = context;
this.ancestors = ancestors;
}
public Object getTarget() {
return null;
}
public void start(ObjectTypePair node) {
if (node == null) {
return;
}
if (ancestors.contains(node)) {
throw new CircularReferenceException(node);
}
ancestors.push(node);
}
public void end(ObjectTypePair node) {
if (node != null) {
ancestors.pop();
}
}
public void startVisitingObject(Object node) {
assignToRoot(new JsonObject());
}
public void visitArray(Object array, Type arrayType) {
assignToRoot(new JsonArray());
int length = Array.getLength(array);
TypeInfoArray fieldTypeInfo = TypeInfoFactory.getTypeInfoForArray(arrayType);
Type componentType = fieldTypeInfo.getSecondLevelType();
for (int i = 0; i < length; ++i) {
Object child = Array.get(array, i);
Type childType = componentType;
// we should not get more specific component type yet since it is possible
// that a custom
// serializer is registered for the componentType
addAsArrayElement(new ObjectTypePair(child, childType, false));
}
}
public void visitArrayField(FieldAttributes f, Type typeOfF, Object obj) {
try {
if (isFieldNull(f, obj)) {
if (serializeNulls) {
addChildAsElement(f, JsonNull.createJsonNull());
}
} else {
Object array = getFieldValue(f, obj);
addAsChildOfObject(f, new ObjectTypePair(array, typeOfF, false));
}
} catch (CircularReferenceException e) {
throw e.createDetailedException(f);
}
}
public void visitObjectField(FieldAttributes f, Type typeOfF, Object obj) {
try {
if (isFieldNull(f, obj)) {
if (serializeNulls) {
addChildAsElement(f, JsonNull.createJsonNull());
}
} else {
Object fieldValue = getFieldValue(f, obj);
// we should not get more specific component type yet since it is
// possible that a custom
// serializer is registered for the componentType
addAsChildOfObject(f, new ObjectTypePair(fieldValue, typeOfF, false));
}
} catch (CircularReferenceException e) {
throw e.createDetailedException(f);
}
}
public void visitPrimitive(Object obj) {
JsonElement json = obj == null ? JsonNull.createJsonNull() : new JsonPrimitive(obj);
assignToRoot(json);
}
private void addAsChildOfObject(FieldAttributes f, ObjectTypePair fieldValuePair) {
JsonElement childElement = getJsonElementForChild(fieldValuePair);
addChildAsElement(f, childElement);
}
private void addChildAsElement(FieldAttributes f, JsonElement childElement) {
FieldNamingStrategy2 namingPolicy = factory.getFieldNamingPolicy();
root.getAsJsonObject().add(namingPolicy.translateName(f), childElement);
}
private void addAsArrayElement(ObjectTypePair elementTypePair) {
if (elementTypePair.getObject() == null) {
root.getAsJsonArray().add(JsonNull.createJsonNull());
} else {
JsonElement childElement = getJsonElementForChild(elementTypePair);
root.getAsJsonArray().add(childElement);
}
}
private JsonElement getJsonElementForChild(ObjectTypePair fieldValueTypePair) {
ObjectNavigator on = factory.create(fieldValueTypePair);
JsonSerializationVisitor childVisitor =
new JsonSerializationVisitor(factory, serializeNulls, serializers, context, ancestors);
on.accept(childVisitor);
return childVisitor.getJsonElement();
}
public boolean visitUsingCustomHandler(ObjectTypePair objTypePair) {
try {
Object obj = objTypePair.getObject();
if (obj == null) {
if (serializeNulls) {
assignToRoot(JsonNull.createJsonNull());
}
return true;
}
JsonElement element = findAndInvokeCustomSerializer(objTypePair);
if (element != null) {
assignToRoot(element);
return true;
}
return false;
} catch (CircularReferenceException e) {
throw e.createDetailedException(null);
}
}
/**
* objTypePair.getObject() must not be null
*/
@SuppressWarnings({"unchecked", "rawtypes"})
private JsonElement findAndInvokeCustomSerializer(ObjectTypePair objTypePair) {
Pair<JsonSerializer<?>,ObjectTypePair> pair = objTypePair.getMatchingHandler(serializers);
if (pair == null) {
return null;
}
JsonSerializer serializer = pair.first;
objTypePair = pair.second;
start(objTypePair);
try {
JsonElement element =
serializer.serialize(objTypePair.getObject(), objTypePair.getType(), context);
return element == null ? JsonNull.createJsonNull() : element;
} finally {
end(objTypePair);
}
}
public boolean visitFieldUsingCustomHandler(FieldAttributes f, Type declaredTypeOfField, Object parent) {
try {
Preconditions.checkState(root.isJsonObject());
Object obj = f.get(parent);
if (obj == null) {
if (serializeNulls) {
addChildAsElement(f, JsonNull.createJsonNull());
}
return true;
}
ObjectTypePair objTypePair = new ObjectTypePair(obj, declaredTypeOfField, false);
JsonElement child = findAndInvokeCustomSerializer(objTypePair);
if (child != null) {
addChildAsElement(f, child);
return true;
}
return false;
} catch (IllegalAccessException e) {
throw new RuntimeException();
} catch (CircularReferenceException e) {
throw e.createDetailedException(f);
}
}
private void assignToRoot(JsonElement newRoot) {
Preconditions.checkNotNull(newRoot);
root = newRoot;
}
private boolean isFieldNull(FieldAttributes f, Object obj) {
return getFieldValue(f, obj) == null;
}
private Object getFieldValue(FieldAttributes f, Object obj) {
try {
return f.get(obj);
} catch (IllegalAccessException e) {
throw new RuntimeException(e);
}
}
public JsonElement getJsonElement() {
return root;
}
}

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/*
* 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.bukkit.mcteam.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.bukkit.mcteam.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 toJson(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>
*
* @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);
}

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/*
* 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.bukkit.mcteam.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.bukkit.mcteam.gson.stream.JsonReader;
import com.bukkit.mcteam.gson.stream.JsonToken;
import com.bukkit.mcteam.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();
}
}

47
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@ -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.bukkit.mcteam.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);
}
}

111
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@ -0,0 +1,111 @@
/*
* 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.bukkit.mcteam.gson;
import java.io.IOException;
import java.util.Map;
/**
* A navigator to navigate a tree of JsonElement nodes in Depth-first order
*
* @author Inderjeet Singh
*/
final class JsonTreeNavigator {
private final JsonElementVisitor visitor;
private final boolean visitNulls;
JsonTreeNavigator(JsonElementVisitor visitor, boolean visitNulls) {
this.visitor = visitor;
this.visitNulls = visitNulls;
}
public void navigate(JsonElement element) throws IOException {
if (element.isJsonNull()) {
visitor.visitNull();
} else if (element.isJsonArray()) {
JsonArray array = element.getAsJsonArray();
visitor.startArray(array);
boolean isFirst = true;
for (JsonElement child : array) {
visitChild(array, child, isFirst);
if (isFirst) {
isFirst = false;
}
}
visitor.endArray(array);
} else if (element.isJsonObject()) {
JsonObject object = element.getAsJsonObject();
visitor.startObject(object);
boolean isFirst = true;
for (Map.Entry<String, JsonElement> member : object.entrySet()) {
boolean visited = visitChild(object, member.getKey(), member.getValue(), isFirst);
if (visited && isFirst) {
isFirst = false;
}
}
visitor.endObject(object);
} else { // must be JsonPrimitive
visitor.visitPrimitive(element.getAsJsonPrimitive());
}
}
/**
* Returns true if the child was visited, false if it was skipped.
*/
private boolean visitChild(JsonObject parent, String childName, JsonElement child,
boolean isFirst) throws IOException {
if (child.isJsonNull()) {
if (visitNulls) {
visitor.visitNullObjectMember(parent, childName, isFirst);
navigate(child.getAsJsonNull());
} else { // Null value is being skipped.
return false;
}
} else if (child.isJsonArray()) {
JsonArray childAsArray = child.getAsJsonArray();
visitor.visitObjectMember(parent, childName, childAsArray, isFirst);
navigate(childAsArray);
} else if (child.isJsonObject()) {
JsonObject childAsObject = child.getAsJsonObject();
visitor.visitObjectMember(parent, childName, childAsObject, isFirst);
navigate(childAsObject);
} else { // is a JsonPrimitive
visitor.visitObjectMember(parent, childName, child.getAsJsonPrimitive(), isFirst);
}
return true;
}
/**
* Returns true if the child was visited, false if it was skipped.
*/
private void visitChild(JsonArray parent, JsonElement child, boolean isFirst) throws IOException {
if (child.isJsonNull()) {
visitor.visitNullArrayMember(parent, isFirst);
navigate(child);
} else if (child.isJsonArray()) {
JsonArray childAsArray = child.getAsJsonArray();
visitor.visitArrayMember(parent, childAsArray, isFirst);
navigate(childAsArray);
} else if (child.isJsonObject()) {
JsonObject childAsObject = child.getAsJsonObject();
visitor.visitArrayMember(parent, childAsObject, isFirst);
navigate(childAsObject);
} else { // is a JsonPrimitive
visitor.visitArrayMember(parent, child.getAsJsonPrimitive(), isFirst);
}
}
}

74
src/com/bukkit/mcteam/gson/LongSerializationPolicy.java Normal file
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@ -0,0 +1,74 @@
/*
* 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.bukkit.mcteam.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(new DefaultStrategy()),
/**
* 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(new StringStrategy());
private final Strategy strategy;
private LongSerializationPolicy(Strategy strategy) {
this.strategy = strategy;
}
/**
* 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 JsonElement serialize(Long value) {
return strategy.serialize(value);
}
private interface Strategy {
JsonElement serialize(Long value);
}
private static class DefaultStrategy implements Strategy {
public JsonElement serialize(Long value) {
return new JsonPrimitive(value);
}
}
private static class StringStrategy implements Strategy {
public JsonElement serialize(Long value) {
return new JsonPrimitive(String.valueOf(value));
}
}
}

43
src/com/bukkit/mcteam/gson/LowerCamelCaseSeparatorNamingPolicy.java Normal file
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@ -0,0 +1,43 @@
/*
* 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.bukkit.mcteam.gson;
/**
* A {@link FieldNamingStrategy2} that ensures the JSON field names consist of only
* lower case letters and are separated by a particular {@code separatorString}.
*
*<p>The following is an example:</p>
* <pre>
* class StringWrapper {
* public String AStringField = "abcd";
* }
*
* LowerCamelCaseSeparatorNamingPolicy policy = new LowerCamelCaseSeparatorNamingPolicy("_");
* String translatedFieldName =
* policy.translateName(StringWrapper.class.getField("AStringField"));
*
* assert("a_string_field".equals(translatedFieldName));
* </pre>
*
* @author Joel Leitch
*/
final class LowerCamelCaseSeparatorNamingPolicy extends CompositionFieldNamingPolicy {
public LowerCamelCaseSeparatorNamingPolicy(String separatorString) {
super(new CamelCaseSeparatorNamingPolicy(separatorString), new LowerCaseNamingPolicy());
}
}

50
src/com/bukkit/mcteam/gson/LowerCaseNamingPolicy.java Normal file
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@ -0,0 +1,50 @@
/*
* 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.bukkit.mcteam.gson;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.util.Collection;
/**
* A {@link FieldNamingStrategy2} that ensures the JSON field names consist of only
* lower case letters.
*
* <p>The following is an example:</p>
* <pre>
* class IntWrapper {
* public int integerField = 0;
* }
*
* LowerCaseNamingPolicy policy = new LowerCaseNamingPolicy();
* String translatedFieldName =
* policy.translateName(IntWrapper.class.getField("integerField"));
*
* assert("integerfield".equals(translatedFieldName));
* </pre>
*
* @author Inderjeet Singh
* @author Joel Leitch
*/
final class LowerCaseNamingPolicy extends RecursiveFieldNamingPolicy {
@Override
protected String translateName(String target, Type fieldType,
Collection<Annotation> annotations) {
return target.toLowerCase();
}
}

66
src/com/bukkit/mcteam/gson/LruCache.java Normal file
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@ -0,0 +1,66 @@
/*
* 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.bukkit.mcteam.gson;
import java.util.LinkedHashMap;
import java.util.Map;
/**
* An implementation of the {@link Cache} interface that evict objects from the cache using an
* LRU (least recently used) algorithm. Object start getting evicted from the cache once the
* {@code maxCapacity} is reached.
*
* @author Inderjeet Singh
* @author Joel Leitch
*/
final class LruCache<K, V> extends LinkedHashMap<K, V> implements Cache<K, V> {
private static final long serialVersionUID = 1L;
private final int maxCapacity;
LruCache(int maxCapacity) {
super(maxCapacity, 0.7F, true);
this.maxCapacity = maxCapacity;
}
public void addElement(K key, V value) {
put(key, value);
}
@Override
public void clear() {
super.clear();
}
public V getElement(K key) {
return get(key);
}
public V removeElement(K key) {
return remove(key);
}
@Override
public int size() {
return super.size();
}
@Override
protected boolean removeEldestEntry(Map.Entry<K, V> entry) {
return size() > maxCapacity;
}
}

8
src/com/google/gson/MapAsArrayTypeAdapter.java → src/com/bukkit/mcteam/gson/MapAsArrayTypeAdapter.java
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@ -14,7 +14,7 @@
* limitations under the License.
*/
package com.google.gson;
package com.bukkit.mcteam.gson;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
@ -45,9 +45,9 @@ import java.util.Map;
* 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>com.bukkit.mcteam.gson.JsonParseException: Expecting object found: "(5,6)"
* at com.bukkit.mcteam.gson.JsonObjectDeserializationVisitor.visitFieldUsingCustomHandler
* at com.bukkit.mcteam.gson.ObjectNavigator.navigateClassFields
* ...</pre>
*
* <h3>Maps as JSON arrays</h3>

112
src/com/bukkit/mcteam/gson/MappedObjectConstructor.java Normal file
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/*
* 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.bukkit.mcteam.gson;
import java.lang.reflect.AccessibleObject;
import java.lang.reflect.Array;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Type;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* This class contains a mapping of all the application specific
* {@link InstanceCreator} instances. Registering an {@link InstanceCreator}
* with this class will override the default object creation that is defined
* by the ObjectConstructor that this class is wrapping. Using this class
* with the JSON framework provides the application with "pluggable" modules
* to customize framework to suit the application's needs.
*
* @author Joel Leitch
*/
final class MappedObjectConstructor implements ObjectConstructor {
private static final Logger log = Logger.getLogger(MappedObjectConstructor.class.getName());
private final ParameterizedTypeHandlerMap<InstanceCreator<?>> instanceCreatorMap;
public MappedObjectConstructor(
ParameterizedTypeHandlerMap<InstanceCreator<?>> instanceCreators) {
instanceCreatorMap = instanceCreators;
}
@SuppressWarnings("unchecked")
public <T> T construct(Type typeOfT) {
InstanceCreator<T> creator = (InstanceCreator<T>) instanceCreatorMap.getHandlerFor(typeOfT);
if (creator != null) {
return creator.createInstance(typeOfT);
}
return (T) constructWithNoArgConstructor(typeOfT);
}
public Object constructArray(Type type, int length) {
return Array.newInstance(TypeUtils.toRawClass(type), length);
}
private <T> T constructWithNoArgConstructor(Type typeOfT) {
try {
Constructor<T> constructor = getNoArgsConstructor(typeOfT);
if (constructor == null) {
throw new RuntimeException(("No-args constructor for " + typeOfT + " does not exist. "
+ "Register an InstanceCreator with Gson for this type to fix this problem."));
}
return constructor.newInstance();
} catch (InstantiationException e) {
throw new RuntimeException(("Unable to invoke no-args constructor for " + typeOfT + ". "
+ "Register an InstanceCreator with Gson for this type may fix this problem."), e);
} catch (IllegalAccessException e) {
throw new RuntimeException(("Unable to invoke no-args constructor for " + typeOfT + ". "
+ "Register an InstanceCreator with Gson for this type may fix this problem."), e);
} catch (InvocationTargetException e) {
throw new RuntimeException(("Unable to invoke no-args constructor for " + typeOfT + ". "
+ "Register an InstanceCreator with Gson for this type may fix this problem."), e);
}
}
@SuppressWarnings({"unchecked", "cast"})
private <T> Constructor<T> getNoArgsConstructor(Type typeOfT) {
TypeInfo typeInfo = new TypeInfo(typeOfT);
Class<T> clazz = (Class<T>) typeInfo.getRawClass();
Constructor<T>[] declaredConstructors = (Constructor<T>[]) clazz.getDeclaredConstructors();
AccessibleObject.setAccessible(declaredConstructors, true);
for (Constructor<T> constructor : declaredConstructors) {
if (constructor.getParameterTypes().length == 0) {
return constructor;
}
}
return null;
}
/**
* Use this methods to register an {@link InstanceCreator} for a new type.
*
* @param <T> the type of class to be mapped with its "creator"
* @param typeOfT the instance type that will be created
* @param creator the {@link InstanceCreator} instance to register
*/
<T> void register(Type typeOfT, InstanceCreator<? extends T> creator) {
if (instanceCreatorMap.hasSpecificHandlerFor(typeOfT)) {
log.log(Level.WARNING, "Overriding the existing InstanceCreator for {0}", typeOfT);
}
instanceCreatorMap.register(typeOfT, creator);
}
@Override
public String toString() {
return instanceCreatorMap.toString();
}
}

87
src/com/bukkit/mcteam/gson/MemoryRefStack.java Normal file
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@ -0,0 +1,87 @@
/*
* 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.bukkit.mcteam.gson;
import java.util.Stack;
/**
* A stack data structure that only does a memory reference comparison
* when looking for a particular item in the stack. This stack does
* not allow {@code null} values to be added.
*
* @author Joel Leitch
*/
final class MemoryRefStack {
private final Stack<ObjectTypePair> stack = new Stack<ObjectTypePair>();
/**
* Adds a new element to the top of the stack.
*
* @param obj the object to add to the stack
* @return the object that was added
*/
public ObjectTypePair push(ObjectTypePair obj) {
Preconditions.checkNotNull(obj);
return stack.push(obj);
}
/**
* Removes the top element from the stack.
*
* @return the element being removed from the stack
* @throws java.util.EmptyStackException thrown if the stack is empty
*/
public ObjectTypePair pop() {
return stack.pop();
}
public boolean isEmpty() {
return stack.isEmpty();
}
/**
* Retrieves the item from the top of the stack, but does not remove it.
*
* @return the item from the top of the stack
* @throws java.util.EmptyStackException thrown if the stack is empty
*/
public ObjectTypePair peek() {
return stack.peek();
}
/**
* Performs a memory reference check to see it the {@code obj} exists in
* the stack.
*
* @param obj the object to search for in the stack
* @return true if this object is already in the stack otherwise false
*/
public boolean contains(ObjectTypePair obj) {
if (obj == null) {
return false;
}
for (ObjectTypePair stackObject : stack) {
if (stackObject.getObject() == obj.getObject()
&& stackObject.type.equals(obj.type) ) {
return true;
}
}
return false;
}
}

53
src/com/bukkit/mcteam/gson/ModifierBasedExclusionStrategy.java Normal file
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@ -0,0 +1,53 @@
/*
* 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.bukkit.mcteam.gson;
import java.util.Collection;
import java.util.HashSet;
/**
* Exclude fields based on particular field modifiers. For a list of possible
* modifiers, see {@link java.lang.reflect.Modifier}.
*
* @author Inderjeet Singh
* @author Joel Leitch
*/
final class ModifierBasedExclusionStrategy implements ExclusionStrategy {
private final Collection<Integer> modifiers;
public ModifierBasedExclusionStrategy(int... modifiers) {
this.modifiers = new HashSet<Integer>();
if (modifiers != null) {
for (int modifier : modifiers) {
this.modifiers.add(modifier);
}
}
}
public boolean shouldSkipField(FieldAttributes f) {
for (int modifier : modifiers) {
if (f.hasModifier(modifier)) {
return true;
}
}
return false;
}
public boolean shouldSkipClass(Class<?> clazz) {
return false;
}
}

107
src/com/bukkit/mcteam/gson/ModifyFirstLetterNamingPolicy.java Normal file
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@ -0,0 +1,107 @@
/*
* 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.bukkit.mcteam.gson;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.util.Collection;
/**
* A {@link FieldNamingStrategy2} that ensures the JSON field names begins with
* an upper case letter.
*
*<p>The following is an example:</p>
* <pre>
* class StringWrapper {
* public String stringField = "abcd";
* public String _stringField = "efg";
* }
*
* ModifyFirstLetterNamingPolicy policy =
* new ModifyFirstLetterNamingPolicy(LetterModifier.UPPER);
* String translatedFieldName =
* policy.translateName(StringWrapper.class.getField("stringField"));
*
* assert("StringField".equals(translatedFieldName));
*
* String translatedFieldName =
* policy.translateName(StringWrapper.class.getField("_stringField"));
*
* assert("_StringField".equals(translatedFieldName));
* </pre>
*
* @author Joel Leitch
*/
final class ModifyFirstLetterNamingPolicy extends RecursiveFieldNamingPolicy {
public enum LetterModifier {
UPPER,
LOWER;
}
private final LetterModifier letterModifier;
/**
* Creates a new ModifyFirstLetterNamingPolicy that will either modify the first letter of the
* target name to either UPPER case or LOWER case depending on the {@code modifier} parameter.
*
* @param modifier the type of modification that should be performed
* @throws IllegalArgumentException if {@code modifier} is null
*/
public ModifyFirstLetterNamingPolicy(LetterModifier modifier) {
Preconditions.checkNotNull(modifier);
this.letterModifier = modifier;
}
@Override
protected String translateName(String target, Type fieldType,
Collection<Annotation> annotations) {
StringBuilder fieldNameBuilder = new StringBuilder();
int index = 0;
char firstCharacter = target.charAt(index);
while (index < target.length() - 1) {
if (Character.isLetter(firstCharacter)) {
break;
}
fieldNameBuilder.append(firstCharacter);
firstCharacter = target.charAt(++index);
}
if (index == target.length()) {
return fieldNameBuilder.toString();
}
boolean capitalizeFirstLetter = (letterModifier == LetterModifier.UPPER);
if (capitalizeFirstLetter && !Character.isUpperCase(firstCharacter)) {
String modifiedTarget = modifyString(Character.toUpperCase(firstCharacter), target, ++index);
return fieldNameBuilder.append(modifiedTarget).toString();
} else if (!capitalizeFirstLetter && Character.isUpperCase(firstCharacter)) {
String modifiedTarget = modifyString(Character.toLowerCase(firstCharacter), target, ++index);
return fieldNameBuilder.append(modifiedTarget).toString();
} else {
return target;
}
}
private String modifyString(char firstCharacter, String srcString, int indexOfSubstring) {
return indexOfSubstring < srcString.length() ?
firstCharacter + srcString.substring(indexOfSubstring)
: String.valueOf(firstCharacter);
}
}

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/*
* 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.bukkit.mcteam.gson;
/**
* This acts as a "Null Object" pattern for the {@link ExclusionStrategy}.
* Passing an instance of this class into the {@link ObjectNavigator} will
* make the {@link ObjectNavigator} parse/visit every field of the object
* being navigated.
*
* @author Joel Leitch
*/
final class NullExclusionStrategy implements ExclusionStrategy {
public boolean shouldSkipField(FieldAttributes f) {
return false;
}
public boolean shouldSkipClass(Class<?> clazz) {
return false;
}
}

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/*
* 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.bukkit.mcteam.gson;
import java.lang.reflect.Type;
/**
* 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
*/
interface ObjectConstructor {
/**
* Creates a new instance of the given type.
*
* @param typeOfT the class type that should be instantiated
* @return a default instance of the provided class.
*/
public <T> T construct(Type typeOfT);
/**
* Constructs an array type of the provided length.
*
* @param typeOfArrayElements type of objects in the array
* @param length size of the array
* @return new array of size length
*/
public Object constructArray(Type typeOfArrayElements, int length);
}

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/*
* 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.bukkit.mcteam.gson;
import java.lang.reflect.AccessibleObject;
import java.lang.reflect.Field;
import java.lang.reflect.Type;
/**
* Provides ability to apply a visitor to an object and all of its fields
* recursively.
*
* @author Inderjeet Singh
* @author Joel Leitch
*/
final class ObjectNavigator {
public interface Visitor {
public void start(ObjectTypePair node);
public void end(ObjectTypePair node);
/**
* This is called before the object navigator starts visiting the current
* object
*/
void startVisitingObject(Object node);
/**
* This is called to visit the current object if it is an array
*/
void visitArray(Object array, Type componentType);
/**
* This is called to visit an object field of the current object
*/
void visitObjectField(FieldAttributes f, Type typeOfF, Object obj);
/**
* This is called to visit an array field of the current object
*/
void visitArrayField(FieldAttributes f, Type typeOfF, Object obj);
/**
* This is called to visit an object using a custom handler
*
* @return true if a custom handler exists, false otherwise
*/
public boolean visitUsingCustomHandler(ObjectTypePair objTypePair);
/**
* This is called to visit a field of the current object using a custom
* handler
*/
public boolean visitFieldUsingCustomHandler(FieldAttributes f, Type actualTypeOfField,
Object parent);
/**
* Retrieve the current target
*/
Object getTarget();
void visitPrimitive(Object primitive);
}
private final ExclusionStrategy exclusionStrategy;
private final ObjectTypePair objTypePair;
/**
* @param objTypePair
* The object,type (fully genericized) being navigated
* @param exclusionStrategy
* the concrete strategy object to be used to filter out fields of an
* object.
*/
ObjectNavigator(ObjectTypePair objTypePair, ExclusionStrategy exclusionStrategy) {
Preconditions.checkNotNull(exclusionStrategy);
this.objTypePair = objTypePair;
this.exclusionStrategy = exclusionStrategy;
}
/**
* Navigate all the fields of the specified object. If a field is null, it
* does not get visited.
*/
public void accept(Visitor visitor) {
TypeInfo objTypeInfo = new TypeInfo(objTypePair.type);
if (exclusionStrategy.shouldSkipClass(objTypeInfo.getRawClass())) {
return;
}
boolean visitedWithCustomHandler = visitor.visitUsingCustomHandler(objTypePair);
if (!visitedWithCustomHandler) {
Object obj = objTypePair.getObject();
Object objectToVisit = (obj == null) ? visitor.getTarget() : obj;
if (objectToVisit == null) {
return;
}
objTypePair.setObject(objectToVisit);
visitor.start(objTypePair);
try {
if (objTypeInfo.isArray()) {
visitor.visitArray(objectToVisit, objTypePair.type);
} else if (objTypeInfo.getActualType() == Object.class
&& isPrimitiveOrString(objectToVisit)) {
// TODO(Joel): this is only used for deserialization of "primitives"
// we should rethink this!!!
visitor.visitPrimitive(objectToVisit);
objectToVisit = visitor.getTarget();
} else {
visitor.startVisitingObject(objectToVisit);
ObjectTypePair currObjTypePair = objTypePair.toMoreSpecificType();
Class<?> topLevelClass = new TypeInfo(currObjTypePair.type).getRawClass();
for (Class<?> curr = topLevelClass; curr != null && !curr.equals(Object.class); curr =
curr.getSuperclass()) {
if (!curr.isSynthetic()) {
navigateClassFields(objectToVisit, curr, visitor);
}
}
}
} finally {
visitor.end(objTypePair);
}
}
}
private boolean isPrimitiveOrString(Object objectToVisit) {
Class<?> realClazz = objectToVisit.getClass();
return realClazz == Object.class || realClazz == String.class
|| Primitives.unwrap(realClazz).isPrimitive();
}
private void navigateClassFields(Object obj, Class<?> clazz, Visitor visitor) {
Field[] fields = clazz.getDeclaredFields();
AccessibleObject.setAccessible(fields, true);
for (Field f : fields) {
FieldAttributes fieldAttributes = new FieldAttributes(clazz, f);
if (exclusionStrategy.shouldSkipField(fieldAttributes)
|| exclusionStrategy.shouldSkipClass(fieldAttributes.getDeclaredClass())) {
continue; // skip
}
TypeInfo fieldTypeInfo = TypeInfoFactory.getTypeInfoForField(f, objTypePair.type);
Type declaredTypeOfField = fieldTypeInfo.getActualType();
boolean visitedWithCustomHandler =
visitor.visitFieldUsingCustomHandler(fieldAttributes, declaredTypeOfField, obj);
if (!visitedWithCustomHandler) {
if (fieldTypeInfo.isArray()) {
visitor.visitArrayField(fieldAttributes, declaredTypeOfField, obj);
} else {
visitor.visitObjectField(fieldAttributes, declaredTypeOfField, obj);
}
}
}
}
}

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/*
* 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.bukkit.mcteam.gson;
/**
* A factory class used to simplify {@link ObjectNavigator} creation.
* This object holds on to a reference of the {@link ExclusionStrategy}
* that you'd like to use with the {@link ObjectNavigator}.
*
* @author Joel Leitch
*/
final class ObjectNavigatorFactory {
private final ExclusionStrategy strategy;
private final FieldNamingStrategy2 fieldNamingPolicy;
/**
* Creates a factory object that will be able to create new
* {@link ObjectNavigator}s with the provided {@code strategy}
*
* @param strategy the exclusion strategy to use with every instance that
* is created by this factory instance.
* @param fieldNamingPolicy the naming policy that should be applied to field
* names
*/
public ObjectNavigatorFactory(ExclusionStrategy strategy, FieldNamingStrategy2 fieldNamingPolicy) {
Preconditions.checkNotNull(fieldNamingPolicy);
this.strategy = (strategy == null ? new NullExclusionStrategy() : strategy);
this.fieldNamingPolicy = fieldNamingPolicy;
}
/**
* Creates a new {@link ObjectNavigator} for this {@code srcObject},
* {@code type} pair.
*
* @param objTypePair The object,type (fully genericized) being navigated
* @return a new instance of a {@link ObjectNavigator} ready to navigate the
* {@code srcObject} while taking into consideration the
* {@code type}.
*/
public ObjectNavigator create(ObjectTypePair objTypePair) {
return new ObjectNavigator(objTypePair, strategy);
}
FieldNamingStrategy2 getFieldNamingPolicy() {
return fieldNamingPolicy;
}
}

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/*
* 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.bukkit.mcteam.gson;
import java.lang.reflect.Type;
/**
* A holder class for an object and its type
*
* @author Inderjeet Singh
*/
final class ObjectTypePair {
private Object obj;
final Type type;
private final boolean preserveType;
ObjectTypePair(Object obj, Type type, boolean preserveType) {
this.obj = obj;
this.type = type;
this.preserveType = preserveType;
}
Object getObject() {
return obj;
}
void setObject(Object obj) {
this.obj = obj;
}
Type getType() {
return type;
}
@Override
public String toString() {
return String.format("preserveType: %b, type: %s, obj: %s", preserveType, type, obj);
}
<HANDLER> Pair<HANDLER, ObjectTypePair> getMatchingHandler(
ParameterizedTypeHandlerMap<HANDLER> handlers) {
HANDLER handler = null;
if (!preserveType && obj != null) {
// First try looking up the handler for the actual type
ObjectTypePair moreSpecificType = toMoreSpecificType();
handler = handlers.getHandlerFor(moreSpecificType.type);
if (handler != null) {
return new Pair<HANDLER, ObjectTypePair>(handler, moreSpecificType);
}
}
// Try the specified type
handler = handlers.getHandlerFor(type);
return handler == null ? null : new Pair<HANDLER, ObjectTypePair>(handler, this);
}
ObjectTypePair toMoreSpecificType() {
if (preserveType || obj == null) {
return this;
}
Type actualType = getActualTypeIfMoreSpecific(type, obj.getClass());
if (actualType == type) {
return this;
}
return new ObjectTypePair(obj, actualType, preserveType);
}
// This takes care of situations where the field was declared as an Object, but the
// actual value contains something more specific. See Issue 54.
// TODO (inder): This solution will not work if the field is of a generic type, but
// the actual object is of a raw type (which is a sub-class of the generic type).
static Type getActualTypeIfMoreSpecific(Type type, Class<?> actualClass) {
if (type instanceof Class<?>) {
Class<?> typeAsClass = (Class<?>) type;
if (typeAsClass.isAssignableFrom(actualClass)) {
type = actualClass;
}
if (type == Object.class) {
type = actualClass;
}
}
return type;
}
@Override
public int hashCode() {
// Not using type.hashCode() since I am not sure if the subclasses of type reimplement
// hashCode() to be equal for equal types
return ((obj == null) ? 31 : obj.hashCode());
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj == null) {
return false;
}
if (getClass() != obj.getClass()) {
return false;
}
ObjectTypePair other = (ObjectTypePair) obj;
if (this.obj == null) {
if (other.obj != null) {
return false;
}
} else if (this.obj != other.obj) { // Checking for reference equality
return false;
}
if (type == null) {
if (other.type != null) {
return false;
}
} else if (!type.equals(other.type)) {
return false;
}
return preserveType == other.preserveType;
}
public boolean isPreserveType() {
return preserveType;
}
}

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/*
* 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.bukkit.mcteam.gson;
/**
* A simple object that holds onto a pair of object references, first and second.
*
* @author Inderjeet Singh
* @author Joel Leitch
*
* @param <FIRST>
* @param <SECOND>
*/
final class Pair<FIRST, SECOND> {
final FIRST first;
final SECOND second;
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);
}
}

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/*
* 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.bukkit.mcteam.gson;
import java.lang.reflect.Type;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* A map that provides ability to associate handlers for a specific type or all
* of its sub-types
*
* @author Inderjeet Singh
* @author Joel Leitch
*
* @param <T> The handler that will be looked up by type
*/
final class ParameterizedTypeHandlerMap<T> {
private static final Logger logger =
Logger.getLogger(ParameterizedTypeHandlerMap.class.getName());
private final Map<Type, T> map = new HashMap<Type, T>();
private final List<Pair<Class<?>, T>> typeHierarchyList = new ArrayList<Pair<Class<?>, T>>();
private boolean modifiable = true;
public synchronized void registerForTypeHierarchy(Class<?> typeOfT, T value) {
Pair<Class<?>, T> pair = new Pair<Class<?>, T>(typeOfT, value);
registerForTypeHierarchy(pair);
}
public synchronized void registerForTypeHierarchy(Pair<Class<?>, T> pair) {
if (!modifiable) {
throw new IllegalStateException("Attempted to modify an unmodifiable map.");
}
int index = getIndexOfSpecificHandlerForTypeHierarchy(pair.first);
if (index >= 0) {
logger.log(Level.WARNING, "Overriding the existing type handler for {0}", pair.first);
typeHierarchyList.remove(index);
}
index = getIndexOfAnOverriddenHandler(pair.first);
if (index >= 0) {
throw new IllegalArgumentException("The specified type handler for type " + pair.first
+ " hides the previously registered type hierarchy handler for "
+ typeHierarchyList.get(index).first + ". Gson does not allow this.");
}
// We want stack behavior for adding to this list. A type adapter added subsequently should
// override a previously registered one.
typeHierarchyList.add(0, pair);
}
private int getIndexOfAnOverriddenHandler(Class<?> type) {
for (int i = typeHierarchyList.size()-1; i >= 0; --i) {
Pair<Class<?>, T> entry = typeHierarchyList.get(i);
if (type.isAssignableFrom(entry.first)) {
return i;
}
}
return -1;
}
public synchronized void register(Type typeOfT, T value) {
if (!modifiable) {
throw new IllegalStateException("Attempted to modify an unmodifiable map.");
}
if (hasSpecificHandlerFor(typeOfT)) {
logger.log(Level.WARNING, "Overriding the existing type handler for {0}", typeOfT);
}
map.put(typeOfT, value);
}
public synchronized void registerIfAbsent(ParameterizedTypeHandlerMap<T> other) {
if (!modifiable) {
throw new IllegalStateException("Attempted to modify an unmodifiable map.");
}
for (Map.Entry<Type, T> entry : other.map.entrySet()) {
if (!map.containsKey(entry.getKey())) {
register(entry.getKey(), entry.getValue());
}
}
// Quite important to traverse the typeHierarchyList from stack bottom first since
// we want to register the handlers in the same order to preserve priority order
for (int i = other.typeHierarchyList.size()-1; i >= 0; --i) {
Pair<Class<?>, T> entry = other.typeHierarchyList.get(i);
int index = getIndexOfSpecificHandlerForTypeHierarchy(entry.first);
if (index < 0) {
registerForTypeHierarchy(entry);
}
}
}
public synchronized void registerIfAbsent(Type typeOfT, T value) {
if (!modifiable) {
throw new IllegalStateException("Attempted to modify an unmodifiable map.");
}
if (!map.containsKey(typeOfT)) {
register(typeOfT, value);
}
}
public synchronized void makeUnmodifiable() {
modifiable = false;
}
public synchronized T getHandlerFor(Type type) {
T handler = map.get(type);
if (handler == null) {
Class<?> rawClass = TypeUtils.toRawClass(type);
if (rawClass != type) {
handler = getHandlerFor(rawClass);
}
if (handler == null) {
// check if something registered for type hierarchy
handler = getHandlerForTypeHierarchy(rawClass);
}
}
return handler;
}
private T getHandlerForTypeHierarchy(Class<?> type) {
for (Pair<Class<?>, T> entry : typeHierarchyList) {
if (entry.first.isAssignableFrom(type)) {
return entry.second;
}
}
return null;
}
public synchronized boolean hasSpecificHandlerFor(Type type) {
return map.containsKey(type);
}
private synchronized int getIndexOfSpecificHandlerForTypeHierarchy(Class<?> type) {
for (int i = typeHierarchyList.size()-1; i >= 0; --i) {
if (type.equals(typeHierarchyList.get(i).first)) {
return i;
}
}
return -1;
}
public synchronized ParameterizedTypeHandlerMap<T> copyOf() {
ParameterizedTypeHandlerMap<T> copy = new ParameterizedTypeHandlerMap<T>();
for (Map.Entry<Type, T> entry : map.entrySet()) {
copy.register(entry.getKey(), entry.getValue());
}
for (Pair<Class<?>, T> entry : typeHierarchyList) {
copy.registerForTypeHierarchy(entry);
}
return copy;
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder("{mapForTypeHierarchy:{");
boolean first = true;
for (Pair<Class<?>, T> entry : typeHierarchyList) {
if (first) {
first = false;
} else {
sb.append(',');
}
sb.append(typeToString(entry.first)).append(':');
sb.append(entry.second);
}
sb.append("},map:{");
first = true;
for (Map.Entry<Type, T> entry : map.entrySet()) {
if (first) {
first = false;
} else {
sb.append(',');
}
sb.append(typeToString(entry.getKey())).append(':');
sb.append(entry.getValue());
}
sb.append("}");
return sb.toString();
}
private String typeToString(Type type) {
return TypeUtils.toRawClass(type).getSimpleName();
}
}

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/*
* 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.bukkit.mcteam.gson;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.util.Arrays;
/**
* An immutable implementation of the {@link ParameterizedType} interface. This object allows
* us to build a reflective {@link Type} objects on demand. This object is used to support
* serialization and deserialization of classes with an {@code ParameterizedType} field where
* as least one of the actual type parameters is a {@code TypeVariable}.
*
* <p>Here's an example class:
* <pre>
* class Foo<T> {
* private List<T> someList;
*
* Foo(List<T> list) {
* this.someList = list;
* }
* }
* </pre>
*
* @author Inderjeet Singh
* @author Joel Leitch
*/
final class ParameterizedTypeImpl implements ParameterizedType {
private final Type rawType;
private final Type[] actualTypeArguments;
private final Type owner;
public ParameterizedTypeImpl(Type rawType, Type[] actualTypeArguments, Type owner) {
this.rawType = rawType;
this.actualTypeArguments = actualTypeArguments;
this.owner = owner;
}
public Type getRawType() {
return rawType;
}
public Type[] getActualTypeArguments() {
return actualTypeArguments;
}
public Type getOwnerType() {
return owner;
}
@Override
public boolean equals(Object o) {
if (!(o instanceof ParameterizedType)) {
return false;
}
// Check that information is equivalent
ParameterizedType that = (ParameterizedType) o;
if (this == that) {
return true;
}
Type thatOwner = that.getOwnerType();
Type thatRawType = that.getRawType();
return (owner == null ? thatOwner == null : owner.equals(thatOwner))
&& (rawType == null ? thatRawType == null : rawType.equals(thatRawType))
&& Arrays.equals(actualTypeArguments, that.getActualTypeArguments());
}
@Override
public int hashCode() {
return Arrays.hashCode(actualTypeArguments)
^ (owner == null ? 0 : owner.hashCode())
^ (rawType == null ? 0 : rawType.hashCode());
}
}

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/*
* 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.bukkit.mcteam.gson;
/**
* 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
*/
final class Preconditions {
public static void checkNotNull(Object obj) {
checkArgument(obj != null);
}
public static void checkArgument(boolean condition) {
if (!condition) {
throw new IllegalArgumentException("condition failed: " + condition);
}
}
public static void checkState(boolean condition) {
if (!condition) {
throw new IllegalArgumentException("condition failed: " + condition);
}
}
}

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/*
* 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.bukkit.mcteam.gson;
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
*/
final class Primitives {
private Primitives() {}
/** A map from primitive types to their corresponding wrapper types. */
public static final Map<Class<?>, Class<?>> PRIMITIVE_TO_WRAPPER_TYPE;
/** A map from wrapper types to their corresponding primitive types. */
public 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 {@code true} if {@code type} is one of the nine
* primitive-wrapper types, such as {@link Integer}.
*
* @see Class#isPrimitive
*/
public static boolean isWrapperType(Class<?> type) {
return WRAPPER_TO_PRIMITIVE_TYPE.containsKey(checkNotNull(type));
}
private static Class<?> checkNotNull(Class<?> type) {
Preconditions.checkNotNull(type);
return 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) {
checkNotNull(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(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) {
checkNotNull(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(type);
return (unwrapped == null) ? type : unwrapped;
}
}

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/*
* 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.bukkit.mcteam.gson;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.util.Collection;
/**
* 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 Joel Leitch
*/
abstract class RecursiveFieldNamingPolicy implements FieldNamingStrategy2 {
public final String translateName(FieldAttributes f) {
Preconditions.checkNotNull(f);
return translateName(f.getName(), f.getDeclaredType(), f.getAnnotations());
}
/**
* Performs the specific string translation.
*
* @param target the string object that will be manipulation/translated
* @param fieldType the actual type value of the field
* @param annotations the annotations set on the field
* @return the translated field name
*/
protected abstract String translateName(String target, Type fieldType, Collection<Annotation> annotations);
}

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/*
* 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.bukkit.mcteam.gson;
import com.bukkit.mcteam.gson.annotations.SerializedName;
/**
* A {@link FieldNamingStrategy2} that acts as a chain of responsibility. If the
* {@link com.bukkit.mcteam.gson.annotations.SerializedName} annotation is applied to a field then this
* strategy will translate the name to the {@code serializedName.value()}; otherwise it delegates
* to the wrapped {@link FieldNamingStrategy2}.
*
* <p>NOTE: this class performs JSON field name validation for any of the fields marked with
* an {@code @SerializedName} annotation.</p>
*
* @see SerializedName
*
* @author Joel Leitch
*/
final class SerializedNameAnnotationInterceptingNamingPolicy implements FieldNamingStrategy2 {
private static final JsonFieldNameValidator fieldNameValidator = new JsonFieldNameValidator();
private final FieldNamingStrategy2 delegate;
public SerializedNameAnnotationInterceptingNamingPolicy(FieldNamingStrategy2 delegate) {
this.delegate = delegate;
}
public String translateName(FieldAttributes f) {
Preconditions.checkNotNull(f);
SerializedName serializedName = f.getAnnotation(SerializedName.class);
return serializedName == null ? delegate.translateName(f)
: fieldNameValidator.validate(serializedName.value());
}
}

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/*
* 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.bukkit.mcteam.gson;
import com.bukkit.mcteam.gson.stream.JsonReader;
import com.bukkit.mcteam.gson.stream.JsonWriter;
import com.bukkit.mcteam.gson.stream.MalformedJsonException;
import java.io.EOFException;
import java.io.IOException;
import java.io.Writer;
import java.util.Map;
/**
* Reads and writes GSON parse trees over streams.
*/
final class Streams {
/**
* Takes a reader in any state and returns the next value as a JsonElement.
*/
static JsonElement parse(JsonReader reader) throws JsonParseException {
boolean isEmpty = true;
try {
reader.peek();
isEmpty = false;
return parseRecursive(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.createJsonNull();
}
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);
}
}
private static JsonElement parseRecursive(JsonReader reader) throws IOException {
switch (reader.peek()) {
case STRING:
return new JsonPrimitive(reader.nextString());
case NUMBER:
String number = reader.nextString();
return new JsonPrimitive(JsonPrimitive.stringToNumber(number));
case BOOLEAN:
return new JsonPrimitive(reader.nextBoolean());
case NULL:
reader.nextNull();
return JsonNull.createJsonNull();
case BEGIN_ARRAY:
JsonArray array = new JsonArray();
reader.beginArray();
while (reader.hasNext()) {
array.add(parseRecursive(reader));
}
reader.endArray();
return array;
case BEGIN_OBJECT:
JsonObject object = new JsonObject();
reader.beginObject();
while (reader.hasNext()) {
object.add(reader.nextName(), parseRecursive(reader));
}
reader.endObject();
return object;
case END_DOCUMENT:
case NAME:
case END_OBJECT:
case END_ARRAY:
default:
throw new IllegalArgumentException();
}
}
/**
* Writes the JSON element to the writer, recursively.
*/
static void write(JsonElement element, boolean serializeNulls, JsonWriter writer)
throws IOException {
if (element == null || element.isJsonNull()) {
if (serializeNulls) {
writer.nullValue();
}
} else if (element.isJsonPrimitive()) {
JsonPrimitive primitive = element.getAsJsonPrimitive();
if (primitive.isNumber()) {
writer.value(primitive.getAsNumber());
} else if (primitive.isBoolean()) {
writer.value(primitive.getAsBoolean());
} else {
writer.value(primitive.getAsString());
}
} else if (element.isJsonArray()) {
writer.beginArray();
for (JsonElement e : element.getAsJsonArray()) {
/* always print null when its parent element is an array! */
if (e.isJsonNull()) {
writer.nullValue();
continue;
}
write(e, serializeNulls, writer);
}
writer.endArray();
} else if (element.isJsonObject()) {
writer.beginObject();
for (Map.Entry<String, JsonElement> e : element.getAsJsonObject().entrySet()) {
JsonElement value = e.getValue();
if (!serializeNulls && value.isJsonNull()) {
continue;
}
writer.name(e.getKey());
write(value, serializeNulls, writer);
}
writer.endObject();
} else {
throw new IllegalArgumentException("Couldn't write " + element.getClass());
}
}
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);
}
}
}
}

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/*
* 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.bukkit.mcteam.gson;
/**
* 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
*/
class SyntheticFieldExclusionStrategy implements ExclusionStrategy {
private final boolean skipSyntheticFields;
SyntheticFieldExclusionStrategy(boolean skipSyntheticFields) {
this.skipSyntheticFields = skipSyntheticFields;
}
public boolean shouldSkipClass(Class<?> clazz) {
return false;
}
public boolean shouldSkipField(FieldAttributes f) {
return skipSyntheticFields && f.isSynthetic();
}
}

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/*
* 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.bukkit.mcteam.gson;
/**
* This class is responsible for adapting/converting an particular "from"
* instance to an instance of type "to".
*
* @author Joel Leitch
*/
interface TypeAdapter {
/**
* Adapts an object instance "from" to and instance of type "to".
*
* @param from the object to adapt
* @param to the Type/Class which this will convert to
* @return the converted "from" instance to type "to"
*/
public <T> T adaptType(Object from, Class<T> to);
}

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/*
* 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.bukkit.mcteam.gson;
import java.lang.reflect.Type;
import java.util.Collection;
/**
* Class that provides information relevant to different parts of a type.
*
* @author Inderjeet Singh
* @author Joel Leitch
*/
class TypeInfo {
protected final Type actualType;
protected final Class<?> rawClass;
TypeInfo(Type actualType) {
this.actualType = actualType;
rawClass = TypeUtils.toRawClass(actualType);
}
public final Type getActualType() {
return actualType;
}
/**
* 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 final Class<?> getWrappedClass() {
return Primitives.wrap(rawClass);
}
/**
* @return the raw class associated with this type
*/
public final Class<?> getRawClass() {
return rawClass;
}
public final boolean isCollectionOrArray() {
return Collection.class.isAssignableFrom(rawClass) || isArray();
}
public final boolean isArray() {
return TypeUtils.isArray(rawClass);
}
public final boolean isEnum() {
return rawClass.isEnum();
}
public final boolean isPrimitive() {
return Primitives.isWrapperType(Primitives.wrap(rawClass));
}
}

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/*
* 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.bukkit.mcteam.gson;
import java.lang.reflect.GenericArrayType;
import java.lang.reflect.Type;
/**
* Class to extract information about types used to define a generic array.
*
* @author Inderjeet Singh
* @author Joel Leitch
*/
final class TypeInfoArray extends TypeInfo {
private final Class<?> componentRawType;
private final Type secondLevel;
TypeInfoArray(Type type) {
super(type);
Class<?> rootComponentType = rawClass;
while (rootComponentType.isArray()) {
rootComponentType = rootComponentType.getComponentType();
}
this.componentRawType = rootComponentType;
this.secondLevel = extractSecondLevelType(actualType, rawClass);
}
private static Type extractSecondLevelType(Type actualType, Class<?> rawClass) {
return actualType instanceof GenericArrayType ?
((GenericArrayType) actualType).getGenericComponentType() : rawClass.getComponentType();
}
/**
* @return the raw type unwrapped of the second level of array.
* If the object is (single-dimensional or multi-dimensional) array, it is the class of the
* elements of the array. For example, this method returns Foo.class for Foo[].
* It will return Foo[].class for Foo[][]. For Foo&lt;String&gt;[][] types, it will return the
* type representing Foo&lt;String&gt;[]
* (i.e. <code>new TypeToken<Foo<String>[]>() {}.getType()</code>).
*/
public Type getSecondLevelType() {
return secondLevel;
}
/**
* @return the raw type of the root component.
* If the object is a single-dimensional array then the component type is the class of an
* element of the array.
* If the object is a multi-dimensional array then the component type is the class of the
* inner-most array element. For example, the This method will return Foo.class for Foo[][][].
*/
public Class<?> getComponentRawType() {
return componentRawType;
}
}

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/*
* 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.bukkit.mcteam.gson;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.util.Collection;
/**
* A convenience object for retrieving the map type information.
*
* @author Inderjeet Singh
* @author Joel Leitch
*/
final class TypeInfoCollection {
private final ParameterizedType collectionType;
public TypeInfoCollection(Type collectionType) {
if (!(collectionType instanceof ParameterizedType)) {
throw new IllegalArgumentException(
"Collection objects need to be parameterized unless you use a custom serializer. "
+ "Use the com.bukkit.mcteam.gson.reflect.TypeToken to extract the ParameterizedType.");
}
TypeInfo rawType = new TypeInfo(collectionType);
Preconditions.checkArgument(Collection.class.isAssignableFrom(rawType.getRawClass()));
this.collectionType = (ParameterizedType) collectionType;
}
public Type getElementType() {
return collectionType.getActualTypeArguments()[0];
}
}

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/*
* 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.bukkit.mcteam.gson;
import java.lang.reflect.Field;
import java.lang.reflect.GenericArrayType;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.lang.reflect.TypeVariable;
import java.lang.reflect.WildcardType;
/**
* A static factory class used to construct the "TypeInfo" objects.
*
* @author Inderjeet Singh
* @author Joel Leitch
*/
final class TypeInfoFactory {
private TypeInfoFactory() {
// Not instantiable since it provides factory methods only.
}
public static TypeInfoArray getTypeInfoForArray(Type type) {
Preconditions.checkArgument(TypeUtils.isArray(type));
return new TypeInfoArray(type);
}
/**
* Evaluates the "actual" type for the field. If the field is a "TypeVariable" or has a
* "TypeVariable" in a parameterized type then it evaluates the real type.
*
* @param f the actual field object to retrieve the type from
* @param typeDefiningF the type that contains the field {@code f}
* @return the type information for the field
*/
public static TypeInfo getTypeInfoForField(Field f, Type typeDefiningF) {
Class<?> classDefiningF = TypeUtils.toRawClass(typeDefiningF);
Type type = f.getGenericType();
Type actualType = getActualType(type, typeDefiningF, classDefiningF);
return new TypeInfo(actualType);
}
private static Type getActualType(
Type typeToEvaluate, Type parentType, Class<?> rawParentClass) {
if (typeToEvaluate instanceof Class<?>) {
return typeToEvaluate;
} else if (typeToEvaluate instanceof ParameterizedType) {
ParameterizedType castedType = (ParameterizedType) typeToEvaluate;
Type owner = castedType.getOwnerType();
Type[] actualTypeParameters =
extractRealTypes(castedType.getActualTypeArguments(), parentType, rawParentClass);
Type rawType = castedType.getRawType();
return new ParameterizedTypeImpl(rawType, actualTypeParameters, owner);
} else if (typeToEvaluate instanceof GenericArrayType) {
GenericArrayType castedType = (GenericArrayType) typeToEvaluate;
Type componentType = castedType.getGenericComponentType();
Type actualType = getActualType(componentType, parentType, rawParentClass);
if (componentType.equals(actualType)) {
return castedType;
}
return actualType instanceof Class<?> ?
TypeUtils.wrapWithArray(TypeUtils.toRawClass(actualType))
: new GenericArrayTypeImpl(actualType);
} else if (typeToEvaluate instanceof TypeVariable<?>) {
if (parentType instanceof ParameterizedType) {
// The class definition has the actual types used for the type variables.
// Find the matching actual type for the Type Variable used for the field.
// For example, class Foo<A> { A a; }
// new Foo<Integer>(); defines the actual type of A to be Integer.
// So, to find the type of the field a, we will have to look at the class'
// actual type arguments.
TypeVariable<?> fieldTypeVariable = (TypeVariable<?>) typeToEvaluate;
TypeVariable<?>[] classTypeVariables = rawParentClass.getTypeParameters();
ParameterizedType objParameterizedType = (ParameterizedType) parentType;
int indexOfActualTypeArgument = getIndex(classTypeVariables, fieldTypeVariable);
Type[] actualTypeArguments = objParameterizedType.getActualTypeArguments();
return actualTypeArguments[indexOfActualTypeArgument];
} else if (typeToEvaluate instanceof TypeVariable<?>) {
Type theSearchedType = null;
do {
theSearchedType = extractTypeForHierarchy(parentType, (TypeVariable<?>) typeToEvaluate);
} while ((theSearchedType != null) && (theSearchedType instanceof TypeVariable<?>));
if (theSearchedType != null) {
return theSearchedType;
}
}
throw new UnsupportedOperationException("Expecting parameterized type, got " + parentType
+ ".\n Are you missing the use of TypeToken idiom?\n See "
+ "http://sites.google.com/site/gson/gson-user-guide#TOC-Serializing-and-Deserializing-Gener");
} else if (typeToEvaluate instanceof WildcardType) {
WildcardType castedType = (WildcardType) typeToEvaluate;
return getActualType(castedType.getUpperBounds()[0], parentType, rawParentClass);
} else {
throw new IllegalArgumentException("Type \'" + typeToEvaluate + "\' is not a Class, "
+ "ParameterizedType, GenericArrayType or TypeVariable. Can't extract type.");
}
}
private static Type extractTypeForHierarchy(Type parentType, TypeVariable<?> typeToEvaluate) {
Class<?> rawParentType = null;
if (parentType instanceof Class<?>) {
rawParentType = (Class<?>) parentType;
} else if (parentType instanceof ParameterizedType) {
ParameterizedType parentTypeAsPT = (ParameterizedType) parentType;
rawParentType = (Class<?>) parentTypeAsPT.getRawType();
} else {
return null;
}
Type superClass = rawParentType.getGenericSuperclass();
if (superClass instanceof ParameterizedType
&& ((ParameterizedType) superClass).getRawType() == typeToEvaluate.getGenericDeclaration()) {
// Evaluate type on this type
TypeVariable<?>[] classTypeVariables =
((Class<?>) ((ParameterizedType) superClass).getRawType()).getTypeParameters();
int indexOfActualTypeArgument = getIndex(classTypeVariables, typeToEvaluate);
Type[] actualTypeArguments = null;
if (parentType instanceof Class<?>) {
actualTypeArguments = ((ParameterizedType) superClass).getActualTypeArguments();
} else if (parentType instanceof ParameterizedType) {
actualTypeArguments = ((ParameterizedType) parentType).getActualTypeArguments();
} else {
return null;
}
return actualTypeArguments[indexOfActualTypeArgument];
}
Type searchedType = null;
if (superClass != null) {
searchedType = extractTypeForHierarchy(superClass, typeToEvaluate);
}
return searchedType;
}
private static Type[] extractRealTypes(
Type[] actualTypeArguments, Type parentType, Class<?> rawParentClass) {
Preconditions.checkNotNull(actualTypeArguments);
Type[] retTypes = new Type[actualTypeArguments.length];
for (int i = 0; i < actualTypeArguments.length; ++i) {
retTypes[i] = getActualType(actualTypeArguments[i], parentType, rawParentClass);
}
return retTypes;
}
private static int getIndex(TypeVariable<?>[] types, TypeVariable<?> type) {
for (int i = 0; i < types.length; ++i) {
if (type.equals(types[i])) {
return i;
}
}
throw new IllegalStateException(
"How can the type variable not be present in the class declaration!");
}
}

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/*
* 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.bukkit.mcteam.gson;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.util.Map;
import java.util.Properties;
/**
* A convenience object for retrieving the map type information.
*
* @author Inderjeet Singh
* @author Joel Leitch
*/
final class TypeInfoMap {
private final Type keyType;
private final Type valueType;
public TypeInfoMap(Type mapType) {
if (mapType instanceof Class<?> && Properties.class.isAssignableFrom((Class<?>) mapType)) {
keyType = String.class;
valueType = String.class;
} else if (mapType instanceof ParameterizedType) {
TypeInfo rawType = new TypeInfo(mapType);
Preconditions.checkArgument(Map.class.isAssignableFrom(rawType.getRawClass()));
ParameterizedType paramType = (ParameterizedType) mapType;
keyType = paramType.getActualTypeArguments()[0];
valueType = paramType.getActualTypeArguments()[1];
} else {
throw new IllegalArgumentException(
"Map objects need to be parameterized unless you use a custom serializer. "
+ "Use the com.bukkit.mcteam.gson.reflect.TypeToken to extract the ParameterizedType.");
}
}
public Type getKeyType() {
return keyType;
}
public Type getValueType() {
return valueType;
}
}

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/*
* 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.bukkit.mcteam.gson;
import java.lang.reflect.Array;
import java.lang.reflect.GenericArrayType;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.lang.reflect.WildcardType;
/**
* Utility class containing some methods for obtaining information on types.
*
* @author Inderjeet Singh
* @author Joel Leitch
*/
final class TypeUtils {
/**
* Returns the actual type matching up with the first type variable.
* So, for a {@code typeInfo} instance defined as:
* <pre>
* class Foo<A, B> {
* }
* Type fooType = new TypeToken<Foo<Integer, String>>() {}.getType();
* </pre>
* <code>TypeUtils.getActualTypeForFirstTypeVariable(fooType)</code> will return Integer.class.
*/
static Type getActualTypeForFirstTypeVariable(Type type) {
if (type instanceof Class<?>) {
return Object.class;
} else if (type instanceof ParameterizedType) {
return ((ParameterizedType)type).getActualTypeArguments()[0];
} else if (type instanceof GenericArrayType) {
return getActualTypeForFirstTypeVariable(((GenericArrayType)type).getGenericComponentType());
} else {
throw new IllegalArgumentException("Type \'" + type + "\' is not a Class, "
+ "ParameterizedType, or GenericArrayType. Can't extract class.");
}
}
static boolean isArray(Type type) {
if (type instanceof Class<?>) {
return ((Class<?>)type).isArray();
} else if (type instanceof GenericArrayType) {
return true;
} else {
return false;
}
}
/**
* This method returns the actual raw class associated with the specified type.
*/
static Class<?> toRawClass(Type type) {
if (type instanceof Class<?>) {
return (Class<?>) type;
} else if (type instanceof ParameterizedType) {
ParameterizedType actualType = (ParameterizedType)type;
return toRawClass(actualType.getRawType());
} else if (type instanceof GenericArrayType) {
GenericArrayType actualType = (GenericArrayType) type;
Class<?> rawClass = toRawClass(actualType.getGenericComponentType());
return wrapWithArray(rawClass);
} else if (type instanceof WildcardType) {
WildcardType castedType = (WildcardType) type;
return toRawClass(castedType.getUpperBounds()[0]);
} else {
throw new IllegalArgumentException("Type \'" + type + "\' is not a Class, "
+ "ParameterizedType, or GenericArrayType. Can't extract class.");
}
}
static Class<?> wrapWithArray(Class<?> rawClass) {
return Array.newInstance(rawClass, 0).getClass();
}
private TypeUtils() {
// Class with just some static utility methods, should not be instantiated
}
}

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/*
* 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.bukkit.mcteam.gson;
/**
* A {@link FieldNamingStrategy2} that ensures the JSON field names consist of mixed
* case letters starting with a capital and are separated by a particular
* {@code separatorString}.
*
*<p>The following is an example:</p>
* <pre>
* class StringWrapper {
* public String AStringField = "abcd";
* }
*
* UpperCamelCaseSeparatorNamingPolicy policy = new UpperCamelCaseSeparatorNamingPolicy("_");
* String translatedFieldName =
* policy.translateName(StringWrapper.class.getField("AStringField"));
*
* assert("A_String_Field".equals(translatedFieldName));
* </pre>
*
* @author Joel Leitch
*/
final class UpperCamelCaseSeparatorNamingPolicy extends CompositionFieldNamingPolicy {
public UpperCamelCaseSeparatorNamingPolicy(String separatorString) {
super(new CamelCaseSeparatorNamingPolicy(separatorString),
new ModifyFirstLetterNamingPolicy(ModifyFirstLetterNamingPolicy.LetterModifier.UPPER));
}
}

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/*
* 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.bukkit.mcteam.gson;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.util.Collection;
/**
* A {@link FieldNamingStrategy2} that ensures the JSON field names consist of only
* upper case letters.
*
* <p>The following is an example:</p>
* <pre>
* class IntWrapper {
* public int integerField = 0;
* }
*
* UpperCaseNamingPolicy policy = new UpperCaseNamingPolicy();
* String translatedFieldName =
* policy.translateName(IntWrapper.class.getField("integerField"));
*
* assert("INTEGERFIELD".equals(translatedFieldName));
* </pre>
*
* @author Joel Leitch
*/
final class UpperCaseNamingPolicy extends RecursiveFieldNamingPolicy {
@Override
protected String translateName(String target, Type fieldType, Collection<Annotation> annotations) {
return target.toUpperCase();
}
}

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/*
* 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.bukkit.mcteam.gson;
/**
* Class contain all constants for versioning support.
*
* @author Joel Leitch
*/
final class VersionConstants {
// Prevent instantiation
private VersionConstants() { }
static final double IGNORE_VERSIONS = -1D;
}

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/*
* 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.bukkit.mcteam.gson;
import com.bukkit.mcteam.gson.annotations.Since;
import com.bukkit.mcteam.gson.annotations.Until;
/**
* This strategy will exclude any files and/or class that are passed the
* {@link #version} value.
*
* @author Joel Leitch
*/
final class VersionExclusionStrategy implements ExclusionStrategy {
private final double version;
public VersionExclusionStrategy(double version) {
Preconditions.checkArgument(version >= 0.0D);
this.version = version;
}
public boolean shouldSkipField(FieldAttributes f) {
return !isValidVersion(f.getAnnotation(Since.class), f.getAnnotation(Until.class));
}
public boolean shouldSkipClass(Class<?> clazz) {
return !isValidVersion(clazz.getAnnotation(Since.class), clazz.getAnnotation(Until.class));
}
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;
}
}

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/*
* 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.bukkit.mcteam.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.bukkit.mcteam.gson.Gson}
* with a {@link com.bukkit.mcteam.gson.GsonBuilder} and invoke
* {@link com.bukkit.mcteam.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;
}

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/*
* 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.bukkit.mcteam.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.bukkit.mcteam.gson.FieldNamingPolicy}, including
* the default field naming policy, that may have been set on the {@link com.bukkit.mcteam.gson.Gson}
* instance. A different naming policy can set using the {@code GsonBuilder} class. See
* {@link com.bukkit.mcteam.gson.GsonBuilder#setFieldNamingPolicy(com.bukkit.mcteam.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.bukkit.mcteam.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();
}

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/*
* 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.bukkit.mcteam.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.bukkit.mcteam.gson.Gson} with a
* {@link com.bukkit.mcteam.gson.GsonBuilder} and invoke
* {@link com.bukkit.mcteam.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();
}

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/*
* 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.bukkit.mcteam.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.bukkit.mcteam.gson.Gson} with a
* {@link com.bukkit.mcteam.gson.GsonBuilder} and invoke
* {@link com.bukkit.mcteam.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();
}

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/**
* This package provides annotations that can be used with {@link com.bukkit.mcteam.gson.Gson}.
*
* @author Inderjeet Singh, Joel Leitch
*/
package com.bukkit.mcteam.gson.annotations;

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

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/*
* 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.bukkit.mcteam.gson.reflect;
import java.lang.reflect.Array;
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}.
*
* You can use this class to get the generic type for a class. For example,
* to get the generic type for <code>Collection&lt;Foo&gt;</code>, you can use:
* <p>
* <code>Type typeOfCollectionOfFoo = new TypeToken&lt;Collection&lt;Foo&gt;&gt;(){}.getType()
* </code>
*
* <p>Assumes {@code Type} implements {@code equals()} and {@code hashCode()}
* as a value (as opposed to identity) comparison.
*
* Also implements {@link #isAssignableFrom(Type)} to check type-safe
* assignability.
*
* @author Bob Lee
* @author Sven Mawson
*/
public abstract class TypeToken<T> {
final Class<? super T> rawType;
final Type type;
/**
* Constructs a new type token. 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.
*
* <p>For example:
* <code>
* {@literal TypeToken<List<String>> t = new TypeToken<List<String>>}(){}
* </code>
*/
@SuppressWarnings("unchecked")
protected TypeToken() {
this.type = getSuperclassTypeParameter(getClass());
this.rawType = (Class<? super T>) getRawType(type);
}
/**
* Unsafe. Constructs a type token manually.
*/
@SuppressWarnings({"unchecked"})
private TypeToken(Type type) {
this.rawType = (Class<? super T>) getRawType(nonNull(type, "type"));
this.type = type;
}
private static <T> T nonNull(T o, String message) {
if (o == null) {
throw new NullPointerException(message);
}
return o;
}
/**
* Gets type from super class's type parameter.
*/
static Type getSuperclassTypeParameter(Class<?> subclass) {
Type superclass = subclass.getGenericSuperclass();
if (superclass instanceof Class<?>) {
throw new RuntimeException("Missing type parameter.");
}
return ((ParameterizedType) superclass).getActualTypeArguments()[0];
}
/**
* Gets type token from super class's type parameter.
*/
static TypeToken<?> fromSuperclassTypeParameter(Class<?> subclass) {
return new SimpleTypeToken<Object>(subclass);
}
private 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();
if (rawType instanceof Class<?>) {
return (Class<?>) rawType;
}
throw buildUnexpectedTypeError(rawType, Class.class);
} else if (type instanceof GenericArrayType) {
GenericArrayType genericArrayType = (GenericArrayType) type;
// TODO(jleitch): This is not the most efficient way to handle generic
// arrays, but is there another way to extract the array class in a
// non-hacky way (i.e. using String value class names- "[L...")?
Object rawArrayType = Array.newInstance(
getRawType(genericArrayType.getGenericComponentType()), 0);
return rawArrayType.getClass();
} else {
throw buildUnexpectedTypeError(
type, ParameterizedType.class, GenericArrayType.class);
}
}
/**
* Gets the raw type.
*/
public Class<? super T> getRawType() {
return rawType;
}
/**
* Gets underlying {@code Type} instance.
*/
public Type getType() {
return type;
}
/**
* Check if this type is assignable from the given class object.
*/
public boolean isAssignableFrom(Class<?> cls) {
return isAssignableFrom((Type) cls);
}
/**
* Check if this type is assignable from the given Type.
*/
public boolean isAssignableFrom(Type from) {
if (from == null) {
return false;
}
if (type.equals(from)) {
return true;
}
if (type instanceof Class<?>) {
return rawType.isAssignableFrom(getRawType(from));
} else if (type instanceof ParameterizedType) {
return isAssignableFrom(from, (ParameterizedType) type,
new HashMap<String, Type>());
} else if (type instanceof GenericArrayType) {
return rawType.isAssignableFrom(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.
*/
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 = 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();
if (isAssignableFrom(sType, to, new HashMap<String, Type>(typeVarMap))) {
return true;
}
return false;
}
/**
* 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;
}
/**
* 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) {
if (to.equals(from)) return true;
if (from instanceof TypeVariable<?>) {
return to.equals(typeMap.get(((TypeVariable<?>)from).getName()));
}
return false;
}
/**
* Hashcode for this object.
* @return hashcode for this object.
*/
@Override public int hashCode() {
return type.hashCode();
}
/**
* Method to test equality.
*
* @return true if this object is logically equal to the specified object, false otherwise.
*/
@Override public boolean equals(Object o) {
if (o == this) {
return true;
}
if (!(o instanceof TypeToken<?>)) {
return false;
}
TypeToken<?> t = (TypeToken<?>) o;
return type.equals(t.type);
}
/**
* Returns a string representation of this object.
* @return a string representation of this object.
*/
@Override public String toString() {
return type instanceof Class<?>
? ((Class<?>) type).getName()
: type.toString();
}
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());
}
/**
* Gets type token for the given {@code Type} instance.
*/
public static TypeToken<?> get(Type type) {
return new SimpleTypeToken<Object>(type);
}
/**
* Gets type token for the given {@code Class} instance.
*/
public static <T> TypeToken<T> get(Class<T> type) {
return new SimpleTypeToken<T>(type);
}
/**
* Private static class to not create more anonymous classes than
* necessary.
*/
private static class SimpleTypeToken<T> extends TypeToken<T> {
public SimpleTypeToken(Type type) {
super(type);
}
}
}

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/**
* This package provides utility classes for finding type information for generic types.
*
* @author Inderjeet Singh, Joel Leitch
*/
package com.bukkit.mcteam.gson.reflect;

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/*
* 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.bukkit.mcteam.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,
}

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/*
* 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.bukkit.mcteam.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
}

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/*
* 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.bukkit.mcteam.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 final 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;
/**
* 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 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 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 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 boolean isHtmlSafe() {
return htmlSafe;
}
/**
* 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 {
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 {
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);
}
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");
}
beforeName();
string(name);
return this;
}
/**
* 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();
}
beforeValue(false);
string(value);
return this;
}
/**
* Encodes {@code null}.
*
* @return this writer.
*/
public JsonWriter nullValue() throws IOException {
beforeValue(false);
out.write("null");
return this;
}
/**
* Encodes {@code value}.
*
* @return this writer.
*/
public JsonWriter value(boolean value) throws IOException {
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);
}
beforeValue(false);
out.append(Double.toString(value));
return this;
}
/**
* Encodes {@code value}.
*
* @return this writer.
*/
public JsonWriter value(long value) throws IOException {
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();
}
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)."
*/
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;
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);
}
}
}

44
src/com/bukkit/mcteam/gson/stream/MalformedJsonException.java Normal file
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@ -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.bukkit.mcteam.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);
}
}