| // Protocol Buffers - Google's data interchange format |
| // Copyright 2008 Google Inc. All rights reserved. |
| // https://developers.google.com/protocol-buffers/ |
| // |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are |
| // met: |
| // |
| // * Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // * Redistributions in binary form must reproduce the above |
| // copyright notice, this list of conditions and the following disclaimer |
| // in the documentation and/or other materials provided with the |
| // distribution. |
| // * Neither the name of Google Inc. nor the names of its |
| // contributors may be used to endorse or promote products derived from |
| // this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| package com.google.protobuf; |
| |
| import java.io.IOException; |
| |
| /** |
| * Implements the lite version of map entry messages. |
| * |
| * This class serves as an utility class to help do serialization/parsing of |
| * map entries. It's used in generated code and also in the full version |
| * MapEntry message. |
| * |
| * Protobuf internal. Users shouldn't use. |
| */ |
| public class MapEntryLite<K, V> |
| extends AbstractMessageLite<MapEntryLite<K, V>, MapEntryLite.Builder<K, V>> { |
| private static class Metadata<K, V> { |
| public final MapEntryLite<K, V> defaultInstance; |
| public final WireFormat.FieldType keyType; |
| public final WireFormat.FieldType valueType; |
| public final Parser<MapEntryLite<K, V>> parser; |
| public Metadata( |
| MapEntryLite<K, V> defaultInstance, |
| WireFormat.FieldType keyType, |
| WireFormat.FieldType valueType) { |
| this.defaultInstance = defaultInstance; |
| this.keyType = keyType; |
| this.valueType = valueType; |
| final Metadata<K, V> finalThis = this; |
| this.parser = new AbstractParser<MapEntryLite<K, V>>() { |
| @Override |
| public MapEntryLite<K, V> parsePartialFrom( |
| CodedInputStream input, ExtensionRegistryLite extensionRegistry) |
| throws InvalidProtocolBufferException { |
| return new MapEntryLite<K, V>(finalThis, input, extensionRegistry); |
| } |
| }; |
| } |
| } |
| |
| private static final int KEY_FIELD_NUMBER = 1; |
| private static final int VALUE_FIELD_NUMBER = 2; |
| |
| private final Metadata<K, V> metadata; |
| private final K key; |
| private final V value; |
| |
| /** Creates a default MapEntryLite message instance. */ |
| private MapEntryLite( |
| WireFormat.FieldType keyType, K defaultKey, |
| WireFormat.FieldType valueType, V defaultValue) { |
| this.metadata = new Metadata<K, V>(this, keyType, valueType); |
| this.key = defaultKey; |
| this.value = defaultValue; |
| } |
| |
| /** Creates a new MapEntryLite message. */ |
| private MapEntryLite(Metadata<K, V> metadata, K key, V value) { |
| this.metadata = metadata; |
| this.key = key; |
| this.value = value; |
| } |
| |
| public K getKey() { |
| return key; |
| } |
| |
| public V getValue() { |
| return value; |
| } |
| |
| /** |
| * Creates a default MapEntryLite message instance. |
| * |
| * This method is used by generated code to create the default instance for |
| * a map entry message. The created default instance should be used to create |
| * new map entry messages of the same type. For each map entry message, only |
| * one default instance should be created. |
| */ |
| public static <K, V> MapEntryLite<K, V> newDefaultInstance( |
| WireFormat.FieldType keyType, K defaultKey, |
| WireFormat.FieldType valueType, V defaultValue) { |
| return new MapEntryLite<K, V>( |
| keyType, defaultKey, valueType, defaultValue); |
| } |
| |
| @Override |
| public void writeTo(CodedOutputStream output) throws IOException { |
| writeField(KEY_FIELD_NUMBER, metadata.keyType, key, output); |
| writeField(VALUE_FIELD_NUMBER, metadata.valueType, value, output); |
| } |
| |
| private void writeField( |
| int number, WireFormat.FieldType type, Object value, |
| CodedOutputStream output) throws IOException { |
| output.writeTag(number, type.getWireType()); |
| FieldSet.writeElementNoTag(output, type, value); |
| } |
| |
| private volatile int cachedSerializedSize = -1; |
| @Override |
| public int getSerializedSize() { |
| if (cachedSerializedSize != -1) { |
| return cachedSerializedSize; |
| } |
| int size = 0; |
| size += getFieldSize(KEY_FIELD_NUMBER, metadata.keyType, key); |
| size += getFieldSize(VALUE_FIELD_NUMBER, metadata.valueType, value); |
| cachedSerializedSize = size; |
| return size; |
| } |
| |
| private int getFieldSize( |
| int number, WireFormat.FieldType type, Object value) { |
| return CodedOutputStream.computeTagSize(number) |
| + FieldSet.computeElementSizeNoTag(type, value); |
| } |
| |
| /** Parsing constructor. */ |
| private MapEntryLite( |
| Metadata<K, V> metadata, |
| CodedInputStream input, |
| ExtensionRegistryLite extensionRegistry) |
| throws InvalidProtocolBufferException { |
| try { |
| K key = metadata.defaultInstance.key; |
| V value = metadata.defaultInstance.value; |
| while (true) { |
| int tag = input.readTag(); |
| if (tag == 0) { |
| break; |
| } |
| if (tag == WireFormat.makeTag( |
| KEY_FIELD_NUMBER, metadata.keyType.getWireType())) { |
| key = mergeField( |
| input, extensionRegistry, metadata.keyType, key); |
| } else if (tag == WireFormat.makeTag( |
| VALUE_FIELD_NUMBER, metadata.valueType.getWireType())) { |
| value = mergeField( |
| input, extensionRegistry, metadata.valueType, value); |
| } else { |
| if (!input.skipField(tag)) { |
| break; |
| } |
| } |
| } |
| this.metadata = metadata; |
| this.key = key; |
| this.value = value; |
| } catch (InvalidProtocolBufferException e) { |
| throw e.setUnfinishedMessage(this); |
| } catch (IOException e) { |
| throw new InvalidProtocolBufferException(e.getMessage()) |
| .setUnfinishedMessage(this); |
| } |
| } |
| |
| @SuppressWarnings("unchecked") |
| private <T> T mergeField( |
| CodedInputStream input, ExtensionRegistryLite extensionRegistry, |
| WireFormat.FieldType type, T value) throws IOException { |
| switch (type) { |
| case MESSAGE: |
| MessageLite.Builder subBuilder = ((MessageLite) value).toBuilder(); |
| input.readMessage(subBuilder, extensionRegistry); |
| return (T) subBuilder.buildPartial(); |
| case ENUM: |
| return (T) (java.lang.Integer) input.readEnum(); |
| case GROUP: |
| throw new RuntimeException("Groups are not allowed in maps."); |
| default: |
| return (T) FieldSet.readPrimitiveField(input, type, true); |
| } |
| } |
| |
| @Override |
| public Parser<MapEntryLite<K, V>> getParserForType() { |
| return metadata.parser; |
| } |
| |
| @Override |
| public Builder<K, V> newBuilderForType() { |
| return new Builder<K, V>(metadata); |
| } |
| |
| @Override |
| public Builder<K, V> toBuilder() { |
| return new Builder<K, V>(metadata, key, value); |
| } |
| |
| @Override |
| public MapEntryLite<K, V> getDefaultInstanceForType() { |
| return metadata.defaultInstance; |
| } |
| |
| @Override |
| public boolean isInitialized() { |
| if (metadata.valueType.getJavaType() == WireFormat.JavaType.MESSAGE) { |
| return ((MessageLite) value).isInitialized(); |
| } |
| return true; |
| } |
| |
| /** |
| * Builder used to create {@link MapEntryLite} messages. |
| */ |
| public static class Builder<K, V> |
| extends AbstractMessageLite.Builder<MapEntryLite<K, V>, Builder<K, V>> { |
| private final Metadata<K, V> metadata; |
| private K key; |
| private V value; |
| |
| private Builder(Metadata<K, V> metadata) { |
| this.metadata = metadata; |
| this.key = metadata.defaultInstance.key; |
| this.value = metadata.defaultInstance.value; |
| } |
| |
| public K getKey() { |
| return key; |
| } |
| |
| public V getValue() { |
| return value; |
| } |
| |
| public Builder<K, V> setKey(K key) { |
| this.key = key; |
| return this; |
| } |
| |
| public Builder<K, V> setValue(V value) { |
| this.value = value; |
| return this; |
| } |
| |
| public Builder<K, V> clearKey() { |
| this.key = metadata.defaultInstance.key; |
| return this; |
| } |
| |
| public Builder<K, V> clearValue() { |
| this.value = metadata.defaultInstance.value; |
| return this; |
| } |
| |
| @Override |
| public Builder<K, V> clear() { |
| this.key = metadata.defaultInstance.key; |
| this.value = metadata.defaultInstance.value; |
| return this; |
| } |
| |
| @Override |
| public MapEntryLite<K, V> build() { |
| MapEntryLite<K, V> result = buildPartial(); |
| if (!result.isInitialized()) { |
| throw newUninitializedMessageException(result); |
| } |
| return result; |
| } |
| |
| @Override |
| public MapEntryLite<K, V> buildPartial() { |
| return new MapEntryLite<K, V>(metadata, key, value); |
| } |
| |
| @Override |
| public MessageLite getDefaultInstanceForType() { |
| return metadata.defaultInstance; |
| } |
| |
| @Override |
| public boolean isInitialized() { |
| if (metadata.valueType.getJavaType() == WireFormat.JavaType.MESSAGE) { |
| return ((MessageLite) value).isInitialized(); |
| } |
| return true; |
| } |
| |
| private Builder(Metadata<K, V> metadata, K key, V value) { |
| this.metadata = metadata; |
| this.key = key; |
| this.value = value; |
| } |
| |
| @Override |
| public Builder<K, V> clone() { |
| return new Builder<K, V>(metadata, key, value); |
| } |
| |
| @Override |
| public Builder<K, V> mergeFrom( |
| CodedInputStream input, ExtensionRegistryLite extensionRegistry) |
| throws IOException { |
| MapEntryLite<K, V> entry = |
| new MapEntryLite<K, V>(metadata, input, extensionRegistry); |
| this.key = entry.key; |
| this.value = entry.value; |
| return this; |
| } |
| |
| @Override |
| protected Builder<K, V> internalMergeFrom(MapEntryLite<K, V> message) { |
| throw new UnsupportedOperationException(); |
| } |
| } |
| } |