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