com.google.protobuf.GeneratedMessageLite Maven / Gradle / Ivy
// 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 com.google.protobuf.Internal.BooleanList;
import com.google.protobuf.Internal.DoubleList;
import com.google.protobuf.Internal.FloatList;
import com.google.protobuf.Internal.IntList;
import com.google.protobuf.Internal.LongList;
import com.google.protobuf.Internal.ProtobufList;
import com.google.protobuf.WireFormat.FieldType;
import java.io.IOException;
import java.io.ObjectStreamException;
import java.io.Serializable;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
/**
* Lite version of {@link GeneratedMessage}.
*
* @author [email protected] Kenton Varda
*/
public abstract class GeneratedMessageLite<
MessageType extends GeneratedMessageLite,
BuilderType extends GeneratedMessageLite.Builder>
extends AbstractMessageLite
implements Serializable {
private static final long serialVersionUID = 1L;
/** For use by generated code only. Lazily initialized to reduce allocations. */
protected UnknownFieldSetLite unknownFields = null;
/** For use by generated code only. */
protected int memoizedSerializedSize = -1;
@SuppressWarnings("unchecked") // Guaranteed by runtime.
public final Parser getParserForType() {
return (Parser) dynamicMethod(MethodToInvoke.GET_PARSER);
}
@SuppressWarnings("unchecked") // Guaranteed by runtime.
public final MessageType getDefaultInstanceForType() {
return (MessageType) dynamicMethod(MethodToInvoke.GET_DEFAULT_INSTANCE);
}
@SuppressWarnings("unchecked") // Guaranteed by runtime.
public final BuilderType newBuilderForType() {
return (BuilderType) dynamicMethod(MethodToInvoke.NEW_BUILDER);
}
// The general strategy for unknown fields is to use an UnknownFieldSetLite that is treated as
// mutable during the parsing constructor and immutable after. This allows us to avoid
// any unnecessary intermediary allocations while reducing the generated code size.
/**
* Lazily initializes unknown fields.
*/
private final void ensureUnknownFieldsInitialized() {
if (unknownFields == null) {
unknownFields = UnknownFieldSetLite.newInstance();
}
}
/**
* Called by subclasses to parse an unknown field. For use by generated code only.
*
* @return {@code true} unless the tag is an end-group tag.
*/
protected boolean parseUnknownField(int tag, CodedInputStream input) throws IOException {
// This will avoid the allocation of unknown fields when a group tag is encountered.
if (WireFormat.getTagWireType(tag) == WireFormat.WIRETYPE_END_GROUP) {
return false;
}
ensureUnknownFieldsInitialized();
return unknownFields.mergeFieldFrom(tag, input);
}
/**
* Called by subclasses to parse an unknown field. For use by generated code only.
*/
protected void mergeVarintField(int tag, int value) {
ensureUnknownFieldsInitialized();
unknownFields.mergeVarintField(tag, value);
}
/**
* Called by subclasses to parse an unknown field. For use by generated code only.
*/
protected void mergeLengthDelimitedField(int fieldNumber, ByteString value) {
ensureUnknownFieldsInitialized();
unknownFields.mergeLengthDelimitedField(fieldNumber, value);
}
/**
* Called by subclasses to complete parsing. For use by generated code only.
*/
protected void doneParsing() {
if (unknownFields == null) {
unknownFields = UnknownFieldSetLite.getDefaultInstance();
} else {
unknownFields.makeImmutable();
}
}
public final boolean isInitialized() {
return dynamicMethod(MethodToInvoke.IS_INITIALIZED, Boolean.TRUE) != null;
}
public final BuilderType toBuilder() {
BuilderType builder = (BuilderType) dynamicMethod(MethodToInvoke.NEW_BUILDER);
builder.mergeFrom((MessageType) this);
return builder;
}
/**
* Defines which method path to invoke in {@link GeneratedMessageLite
* #dynamicMethod(MethodToInvoke, Object...)}.
*
* For use by generated code only.
*/
public static enum MethodToInvoke {
IS_INITIALIZED,
PARSE_PARTIAL_FROM,
MERGE_FROM,
MAKE_IMMUTABLE,
NEW_INSTANCE,
NEW_BUILDER,
GET_DEFAULT_INSTANCE,
GET_PARSER;
}
/**
* A method that implements different types of operations described in {@link MethodToInvoke}.
* Theses different kinds of operations are required to implement message-level operations for
* builders in the runtime. This method bundles those operations to reduce the generated methods
* count.
*
* - {@code PARSE_PARTIAL_FROM} is parameterized with an {@link CodedInputStream} and
* {@link ExtensionRegistryLite}. It consumes the input stream, parsing the contents into the
* returned protocol buffer. If parsing throws an {@link InvalidProtocolBufferException}, the
* implementation wraps it in a RuntimeException
*
- {@code NEW_INSTANCE} returns a new instance of the protocol buffer
*
- {@code IS_INITIALIZED} is parameterized with a {@code Boolean} detailing whether to
* memoize. It returns {@code null} for false and the default instance for true. We optionally
* memoize to support the Builder case, where memoization is not desired.
*
- {@code NEW_BUILDER} returns a {@code BuilderType} instance.
*
- {@code MERGE_FROM} is parameterized with a {@code MessageType} and merges the fields from
* that instance into this instance.
*
- {@code MAKE_IMMUTABLE} sets all internal fields to an immutable state.
*
* This method, plus the implementation of the Builder, enables the Builder class to be proguarded
* away entirely on Android.
*
* For use by generated code only.
*/
protected abstract Object dynamicMethod(MethodToInvoke method, Object arg0, Object arg1);
/**
* Same as {@link #dynamicMethod(MethodToInvoke, Object, Object)} with {@code null} padding.
*/
protected Object dynamicMethod(MethodToInvoke method, Object arg0) {
return dynamicMethod(method, arg0, null);
}
/**
* Same as {@link #dynamicMethod(MethodToInvoke, Object, Object)} with {@code null} padding.
*/
protected Object dynamicMethod(MethodToInvoke method) {
return dynamicMethod(method, null, null);
}
/**
* Merge some unknown fields into the {@link UnknownFieldSetLite} for this
* message.
*
*
For use by generated code only.
*/
protected final void mergeUnknownFields(UnknownFieldSetLite unknownFields) {
this.unknownFields = UnknownFieldSetLite.mutableCopyOf(this.unknownFields, unknownFields);
}
@SuppressWarnings("unchecked")
public abstract static class Builder<
MessageType extends GeneratedMessageLite,
BuilderType extends Builder>
extends AbstractMessageLite.Builder {
private final MessageType defaultInstance;
protected MessageType instance;
protected boolean isBuilt;
protected Builder(MessageType defaultInstance) {
this.defaultInstance = defaultInstance;
this.instance = (MessageType) defaultInstance.dynamicMethod(MethodToInvoke.NEW_INSTANCE);
isBuilt = false;
}
/**
* Called before any method that would mutate the builder to ensure that it correctly copies
* any state before the write happens to preserve immutability guarantees.
*/
protected void copyOnWrite() {
if (isBuilt) {
MessageType newInstance = (MessageType) instance.dynamicMethod(MethodToInvoke.NEW_INSTANCE);
newInstance.dynamicMethod(MethodToInvoke.MERGE_FROM, instance);
instance = newInstance;
isBuilt = false;
}
}
//@Override (Java 1.6 override semantics, but we must support 1.5)
public final boolean isInitialized() {
return GeneratedMessageLite.isInitialized(instance, false /* shouldMemoize */);
}
//@Override (Java 1.6 override semantics, but we must support 1.5)
public final BuilderType clear() {
// No need to copy on write since we're dropping the instance anyways.
instance = (MessageType) instance.dynamicMethod(MethodToInvoke.NEW_INSTANCE);
return (BuilderType) this;
}
//@Override (Java 1.6 override semantics, but we must support 1.5)
public BuilderType clone() {
BuilderType builder =
(BuilderType) getDefaultInstanceForType().newBuilderForType();
builder.mergeFrom(buildPartial());
return builder;
}
//@Override (Java 1.6 override semantics, but we must support 1.5)
public MessageType buildPartial() {
if (isBuilt) {
return instance;
}
instance.dynamicMethod(MethodToInvoke.MAKE_IMMUTABLE);
instance.unknownFields.makeImmutable();
isBuilt = true;
return instance;
}
//@Override (Java 1.6 override semantics, but we must support 1.5)
public final MessageType build() {
MessageType result = buildPartial();
if (!result.isInitialized()) {
throw newUninitializedMessageException(result);
}
return result;
}
/** All subclasses implement this. */
public BuilderType mergeFrom(MessageType message) {
copyOnWrite();
instance.dynamicMethod(MethodToInvoke.MERGE_FROM, message);
return (BuilderType) this;
}
public MessageType getDefaultInstanceForType() {
return defaultInstance;
}
public BuilderType mergeFrom(
com.google.protobuf.CodedInputStream input,
com.google.protobuf.ExtensionRegistryLite extensionRegistry)
throws java.io.IOException {
MessageType parsedMessage = null;
try {
parsedMessage =
(MessageType) getDefaultInstanceForType().getParserForType().parsePartialFrom(
input, extensionRegistry);
} catch (com.google.protobuf.InvalidProtocolBufferException e) {
parsedMessage = (MessageType) e.getUnfinishedMessage();
throw e;
} finally {
if (parsedMessage != null) {
mergeFrom(parsedMessage);
}
}
return (BuilderType) this;
}
}
// =================================================================
// Extensions-related stuff
/**
* Lite equivalent of {@link com.google.protobuf.GeneratedMessage.ExtendableMessageOrBuilder}.
*/
public interface ExtendableMessageOrBuilder<
MessageType extends ExtendableMessage,
BuilderType extends ExtendableBuilder>
extends MessageLiteOrBuilder {
/** Check if a singular extension is present. */
boolean hasExtension(
ExtensionLite extension);
/** Get the number of elements in a repeated extension. */
int getExtensionCount(
ExtensionLite> extension);
/** Get the value of an extension. */
Type getExtension(ExtensionLite extension);
/** Get one element of a repeated extension. */
Type getExtension(
ExtensionLite> extension,
int index);
}
/**
* Lite equivalent of {@link GeneratedMessage.ExtendableMessage}.
*/
public abstract static class ExtendableMessage<
MessageType extends ExtendableMessage,
BuilderType extends ExtendableBuilder>
extends GeneratedMessageLite
implements ExtendableMessageOrBuilder {
/**
* Represents the set of extensions on this message. For use by generated
* code only.
*/
protected FieldSet extensions = FieldSet.newFieldSet();
protected final void mergeExtensionFields(final MessageType other) {
if (extensions.isImmutable()) {
extensions = extensions.clone();
}
extensions.mergeFrom(((ExtendableMessage) other).extensions);
}
/**
* Parse an unknown field or an extension. For use by generated code only.
*
* For use by generated code only.
*
* @return {@code true} unless the tag is an end-group tag.
*/
protected boolean parseUnknownField(
MessageType defaultInstance,
CodedInputStream input,
ExtensionRegistryLite extensionRegistry,
int tag) throws IOException {
int wireType = WireFormat.getTagWireType(tag);
int fieldNumber = WireFormat.getTagFieldNumber(tag);
// TODO(dweis): How much bytecode would be saved by not requiring the generated code to
// provide the default instance?
GeneratedExtension extension = extensionRegistry.findLiteExtensionByNumber(
defaultInstance, fieldNumber);
boolean unknown = false;
boolean packed = false;
if (extension == null) {
unknown = true; // Unknown field.
} else if (wireType == FieldSet.getWireFormatForFieldType(
extension.descriptor.getLiteType(),
false /* isPacked */)) {
packed = false; // Normal, unpacked value.
} else if (extension.descriptor.isRepeated &&
extension.descriptor.type.isPackable() &&
wireType == FieldSet.getWireFormatForFieldType(
extension.descriptor.getLiteType(),
true /* isPacked */)) {
packed = true; // Packed value.
} else {
unknown = true; // Wrong wire type.
}
if (unknown) { // Unknown field or wrong wire type. Skip.
return parseUnknownField(tag, input);
}
if (packed) {
int length = input.readRawVarint32();
int limit = input.pushLimit(length);
if (extension.descriptor.getLiteType() == WireFormat.FieldType.ENUM) {
while (input.getBytesUntilLimit() > 0) {
int rawValue = input.readEnum();
Object value =
extension.descriptor.getEnumType().findValueByNumber(rawValue);
if (value == null) {
// If the number isn't recognized as a valid value for this
// enum, drop it (don't even add it to unknownFields).
return true;
}
extensions.addRepeatedField(extension.descriptor,
extension.singularToFieldSetType(value));
}
} else {
while (input.getBytesUntilLimit() > 0) {
Object value =
FieldSet.readPrimitiveField(input,
extension.descriptor.getLiteType(),
/*checkUtf8=*/ false);
extensions.addRepeatedField(extension.descriptor, value);
}
}
input.popLimit(limit);
} else {
Object value;
switch (extension.descriptor.getLiteJavaType()) {
case MESSAGE: {
MessageLite.Builder subBuilder = null;
if (!extension.descriptor.isRepeated()) {
MessageLite existingValue =
(MessageLite) extensions.getField(extension.descriptor);
if (existingValue != null) {
subBuilder = existingValue.toBuilder();
}
}
if (subBuilder == null) {
subBuilder = extension.getMessageDefaultInstance()
.newBuilderForType();
}
if (extension.descriptor.getLiteType() ==
WireFormat.FieldType.GROUP) {
input.readGroup(extension.getNumber(),
subBuilder, extensionRegistry);
} else {
input.readMessage(subBuilder, extensionRegistry);
}
value = subBuilder.build();
break;
}
case ENUM:
int rawValue = input.readEnum();
value = extension.descriptor.getEnumType()
.findValueByNumber(rawValue);
// If the number isn't recognized as a valid value for this enum,
// write it to unknown fields object.
if (value == null) {
mergeVarintField(fieldNumber, rawValue);
return true;
}
break;
default:
value = FieldSet.readPrimitiveField(input,
extension.descriptor.getLiteType(),
/*checkUtf8=*/ false);
break;
}
if (extension.descriptor.isRepeated()) {
extensions.addRepeatedField(extension.descriptor,
extension.singularToFieldSetType(value));
} else {
extensions.setField(extension.descriptor,
extension.singularToFieldSetType(value));
}
}
return true;
}
private void verifyExtensionContainingType(
final GeneratedExtension extension) {
if (extension.getContainingTypeDefaultInstance() !=
getDefaultInstanceForType()) {
// This can only happen if someone uses unchecked operations.
throw new IllegalArgumentException(
"This extension is for a different message type. Please make " +
"sure that you are not suppressing any generics type warnings.");
}
}
/** Check if a singular extension is present. */
//@Override (Java 1.6 override semantics, but we must support 1.5)
public final boolean hasExtension(
final ExtensionLite extension) {
GeneratedExtension extensionLite =
checkIsLite(extension);
verifyExtensionContainingType(extensionLite);
return extensions.hasField(extensionLite.descriptor);
}
/** Get the number of elements in a repeated extension. */
//@Override (Java 1.6 override semantics, but we must support 1.5)
public final int getExtensionCount(
final ExtensionLite> extension) {
GeneratedExtension> extensionLite =
checkIsLite(extension);
verifyExtensionContainingType(extensionLite);
return extensions.getRepeatedFieldCount(extensionLite.descriptor);
}
/** Get the value of an extension. */
//@Override (Java 1.6 override semantics, but we must support 1.5)
@SuppressWarnings("unchecked")
public final Type getExtension(
final ExtensionLite extension) {
GeneratedExtension extensionLite =
checkIsLite(extension);
verifyExtensionContainingType(extensionLite);
final Object value = extensions.getField(extensionLite.descriptor);
if (value == null) {
return extensionLite.defaultValue;
} else {
return (Type) extensionLite.fromFieldSetType(value);
}
}
/** Get one element of a repeated extension. */
//@Override (Java 1.6 override semantics, but we must support 1.5)
@SuppressWarnings("unchecked")
public final Type getExtension(
final ExtensionLite> extension,
final int index) {
GeneratedExtension> extensionLite =
checkIsLite(extension);
verifyExtensionContainingType(extensionLite);
return (Type) extensionLite.singularFromFieldSetType(
extensions.getRepeatedField(extensionLite.descriptor, index));
}
/** Called by subclasses to check if all extensions are initialized. */
protected boolean extensionsAreInitialized() {
return extensions.isInitialized();
}
@Override
protected final void doneParsing() {
super.doneParsing();
extensions.makeImmutable();
}
/**
* Used by subclasses to serialize extensions. Extension ranges may be
* interleaved with field numbers, but we must write them in canonical
* (sorted by field number) order. ExtensionWriter helps us write
* individual ranges of extensions at once.
*/
protected class ExtensionWriter {
// Imagine how much simpler this code would be if Java iterators had
// a way to get the next element without advancing the iterator.
private final Iterator> iter =
extensions.iterator();
private Map.Entry next;
private final boolean messageSetWireFormat;
private ExtensionWriter(boolean messageSetWireFormat) {
if (iter.hasNext()) {
next = iter.next();
}
this.messageSetWireFormat = messageSetWireFormat;
}
public void writeUntil(final int end, final CodedOutputStream output)
throws IOException {
while (next != null && next.getKey().getNumber() < end) {
ExtensionDescriptor extension = next.getKey();
if (messageSetWireFormat && extension.getLiteJavaType() ==
WireFormat.JavaType.MESSAGE &&
!extension.isRepeated()) {
output.writeMessageSetExtension(extension.getNumber(),
(MessageLite) next.getValue());
} else {
FieldSet.writeField(extension, next.getValue(), output);
}
if (iter.hasNext()) {
next = iter.next();
} else {
next = null;
}
}
}
}
protected ExtensionWriter newExtensionWriter() {
return new ExtensionWriter(false);
}
protected ExtensionWriter newMessageSetExtensionWriter() {
return new ExtensionWriter(true);
}
/** Called by subclasses to compute the size of extensions. */
protected int extensionsSerializedSize() {
return extensions.getSerializedSize();
}
protected int extensionsSerializedSizeAsMessageSet() {
return extensions.getMessageSetSerializedSize();
}
}
/**
* Lite equivalent of {@link GeneratedMessage.ExtendableBuilder}.
*/
@SuppressWarnings("unchecked")
public abstract static class ExtendableBuilder<
MessageType extends ExtendableMessage,
BuilderType extends ExtendableBuilder>
extends Builder
implements ExtendableMessageOrBuilder {
protected ExtendableBuilder(MessageType defaultInstance) {
super(defaultInstance);
// TODO(dweis): This is kind of an unnecessary clone since we construct a
// new instance in the parent constructor which makes the extensions
// immutable. This extra allocation shouldn't matter in practice
// though.
instance.extensions = instance.extensions.clone();
}
// For immutable message conversion.
void internalSetExtensionSet(FieldSet extensions) {
copyOnWrite();
instance.extensions = extensions;
}
// @Override (Java 1.6 override semantics, but we must support 1.5)
protected void copyOnWrite() {
if (!isBuilt) {
return;
}
super.copyOnWrite();
instance.extensions = instance.extensions.clone();
}
// @Override (Java 1.6 override semantics, but we must support 1.5)
public final MessageType buildPartial() {
if (isBuilt) {
return instance;
}
instance.extensions.makeImmutable();
return super.buildPartial();
}
private void verifyExtensionContainingType(
final GeneratedExtension extension) {
if (extension.getContainingTypeDefaultInstance() !=
getDefaultInstanceForType()) {
// This can only happen if someone uses unchecked operations.
throw new IllegalArgumentException(
"This extension is for a different message type. Please make " +
"sure that you are not suppressing any generics type warnings.");
}
}
/** Check if a singular extension is present. */
//@Override (Java 1.6 override semantics, but we must support 1.5)
public final boolean hasExtension(
final ExtensionLite extension) {
return instance.hasExtension(extension);
}
/** Get the number of elements in a repeated extension. */
//@Override (Java 1.6 override semantics, but we must support 1.5)
public final int getExtensionCount(
final ExtensionLite> extension) {
return instance.getExtensionCount(extension);
}
/** Get the value of an extension. */
//@Override (Java 1.6 override semantics, but we must support 1.5)
@SuppressWarnings("unchecked")
public final Type getExtension(
final ExtensionLite extension) {
return instance.getExtension(extension);
}
/** Get one element of a repeated extension. */
@SuppressWarnings("unchecked")
//@Override (Java 1.6 override semantics, but we must support 1.5)
public final Type getExtension(
final ExtensionLite> extension,
final int index) {
return instance.getExtension(extension, index);
}
// This is implemented here only to work around an apparent bug in the
// Java compiler and/or build system. See bug #1898463. The mere presence
// of this dummy clone() implementation makes it go away.
@Override
public BuilderType clone() {
return super.clone();
}
/** Set the value of an extension. */
public final BuilderType setExtension(
final ExtensionLite extension,
final Type value) {
GeneratedExtension extensionLite =
checkIsLite(extension);
verifyExtensionContainingType(extensionLite);
copyOnWrite();
instance.extensions.setField(extensionLite.descriptor, extensionLite.toFieldSetType(value));
return (BuilderType) this;
}
/** Set the value of one element of a repeated extension. */
public final BuilderType setExtension(
final ExtensionLite> extension,
final int index, final Type value) {
GeneratedExtension> extensionLite =
checkIsLite(extension);
verifyExtensionContainingType(extensionLite);
copyOnWrite();
instance.extensions.setRepeatedField(
extensionLite.descriptor, index, extensionLite.singularToFieldSetType(value));
return (BuilderType) this;
}
/** Append a value to a repeated extension. */
public final BuilderType addExtension(
final ExtensionLite> extension,
final Type value) {
GeneratedExtension> extensionLite =
checkIsLite(extension);
verifyExtensionContainingType(extensionLite);
copyOnWrite();
instance.extensions.addRepeatedField(
extensionLite.descriptor, extensionLite.singularToFieldSetType(value));
return (BuilderType) this;
}
/** Clear an extension. */
public final BuilderType clearExtension(
final ExtensionLite extension) {
GeneratedExtension extensionLite = checkIsLite(extension);
verifyExtensionContainingType(extensionLite);
copyOnWrite();
instance.extensions.clearField(extensionLite.descriptor);
return (BuilderType) this;
}
}
// -----------------------------------------------------------------
/** For use by generated code only. */
public static
GeneratedExtension
newSingularGeneratedExtension(
final ContainingType containingTypeDefaultInstance,
final Type defaultValue,
final MessageLite messageDefaultInstance,
final Internal.EnumLiteMap enumTypeMap,
final int number,
final WireFormat.FieldType type,
final Class singularType) {
return new GeneratedExtension(
containingTypeDefaultInstance,
defaultValue,
messageDefaultInstance,
new ExtensionDescriptor(enumTypeMap, number, type,
false /* isRepeated */,
false /* isPacked */),
singularType);
}
/** For use by generated code only. */
public static
GeneratedExtension
newRepeatedGeneratedExtension(
final ContainingType containingTypeDefaultInstance,
final MessageLite messageDefaultInstance,
final Internal.EnumLiteMap enumTypeMap,
final int number,
final WireFormat.FieldType type,
final boolean isPacked,
final Class singularType) {
@SuppressWarnings("unchecked") // Subclasses ensure Type is a List
Type emptyList = (Type) Collections.emptyList();
return new GeneratedExtension(
containingTypeDefaultInstance,
emptyList,
messageDefaultInstance,
new ExtensionDescriptor(
enumTypeMap, number, type, true /* isRepeated */, isPacked),
singularType);
}
static final class ExtensionDescriptor
implements FieldSet.FieldDescriptorLite<
ExtensionDescriptor> {
ExtensionDescriptor(
final Internal.EnumLiteMap enumTypeMap,
final int number,
final WireFormat.FieldType type,
final boolean isRepeated,
final boolean isPacked) {
this.enumTypeMap = enumTypeMap;
this.number = number;
this.type = type;
this.isRepeated = isRepeated;
this.isPacked = isPacked;
}
final Internal.EnumLiteMap enumTypeMap;
final int number;
final WireFormat.FieldType type;
final boolean isRepeated;
final boolean isPacked;
public int getNumber() {
return number;
}
public WireFormat.FieldType getLiteType() {
return type;
}
public WireFormat.JavaType getLiteJavaType() {
return type.getJavaType();
}
public boolean isRepeated() {
return isRepeated;
}
public boolean isPacked() {
return isPacked;
}
public Internal.EnumLiteMap getEnumType() {
return enumTypeMap;
}
@SuppressWarnings("unchecked")
public MessageLite.Builder internalMergeFrom(
MessageLite.Builder to, MessageLite from) {
return ((Builder) to).mergeFrom((GeneratedMessageLite) from);
}
public int compareTo(ExtensionDescriptor other) {
return number - other.number;
}
}
// =================================================================
/** Calls Class.getMethod and throws a RuntimeException if it fails. */
@SuppressWarnings("unchecked")
static Method getMethodOrDie(Class clazz, String name, Class... params) {
try {
return clazz.getMethod(name, params);
} catch (NoSuchMethodException e) {
throw new RuntimeException(
"Generated message class \"" + clazz.getName() +
"\" missing method \"" + name + "\".", e);
}
}
/** Calls invoke and throws a RuntimeException if it fails. */
static Object invokeOrDie(Method method, Object object, Object... params) {
try {
return method.invoke(object, params);
} catch (IllegalAccessException e) {
throw new RuntimeException(
"Couldn't use Java reflection to implement protocol message " +
"reflection.", e);
} catch (InvocationTargetException e) {
final Throwable cause = e.getCause();
if (cause instanceof RuntimeException) {
throw (RuntimeException) cause;
} else if (cause instanceof Error) {
throw (Error) cause;
} else {
throw new RuntimeException(
"Unexpected exception thrown by generated accessor method.", cause);
}
}
}
/**
* Lite equivalent to {@link GeneratedMessage.GeneratedExtension}.
*
* Users should ignore the contents of this class and only use objects of
* this type as parameters to extension accessors and ExtensionRegistry.add().
*/
public static class GeneratedExtension<
ContainingType extends MessageLite, Type>
extends ExtensionLite {
/**
* Create a new instance with the given parameters.
*
* The last parameter {@code singularType} is only needed for enum types.
* We store integer values for enum types in a {@link ExtendableMessage}
* and use Java reflection to convert an integer value back into a concrete
* enum object.
*/
GeneratedExtension(
final ContainingType containingTypeDefaultInstance,
final Type defaultValue,
final MessageLite messageDefaultInstance,
final ExtensionDescriptor descriptor,
final Class singularType) {
// Defensive checks to verify the correct initialization order of
// GeneratedExtensions and their related GeneratedMessages.
if (containingTypeDefaultInstance == null) {
throw new IllegalArgumentException(
"Null containingTypeDefaultInstance");
}
if (descriptor.getLiteType() == WireFormat.FieldType.MESSAGE &&
messageDefaultInstance == null) {
throw new IllegalArgumentException(
"Null messageDefaultInstance");
}
this.containingTypeDefaultInstance = containingTypeDefaultInstance;
this.defaultValue = defaultValue;
this.messageDefaultInstance = messageDefaultInstance;
this.descriptor = descriptor;
}
final ContainingType containingTypeDefaultInstance;
final Type defaultValue;
final MessageLite messageDefaultInstance;
final ExtensionDescriptor descriptor;
/**
* Default instance of the type being extended, used to identify that type.
*/
public ContainingType getContainingTypeDefaultInstance() {
return containingTypeDefaultInstance;
}
/** Get the field number. */
public int getNumber() {
return descriptor.getNumber();
}
/**
* If the extension is an embedded message or group, returns the default
* instance of the message.
*/
public MessageLite getMessageDefaultInstance() {
return messageDefaultInstance;
}
@SuppressWarnings("unchecked")
Object fromFieldSetType(final Object value) {
if (descriptor.isRepeated()) {
if (descriptor.getLiteJavaType() == WireFormat.JavaType.ENUM) {
final List result = new ArrayList();
for (final Object element : (List) value) {
result.add(singularFromFieldSetType(element));
}
return result;
} else {
return value;
}
} else {
return singularFromFieldSetType(value);
}
}
Object singularFromFieldSetType(final Object value) {
if (descriptor.getLiteJavaType() == WireFormat.JavaType.ENUM) {
return descriptor.enumTypeMap.findValueByNumber((Integer) value);
} else {
return value;
}
}
@SuppressWarnings("unchecked")
Object toFieldSetType(final Object value) {
if (descriptor.isRepeated()) {
if (descriptor.getLiteJavaType() == WireFormat.JavaType.ENUM) {
final List result = new ArrayList();
for (final Object element : (List) value) {
result.add(singularToFieldSetType(element));
}
return result;
} else {
return value;
}
} else {
return singularToFieldSetType(value);
}
}
Object singularToFieldSetType(final Object value) {
if (descriptor.getLiteJavaType() == WireFormat.JavaType.ENUM) {
return ((Internal.EnumLite) value).getNumber();
} else {
return value;
}
}
public FieldType getLiteType() {
return descriptor.getLiteType();
}
public boolean isRepeated() {
return descriptor.isRepeated;
}
public Type getDefaultValue() {
return defaultValue;
}
}
/**
* A serialized (serializable) form of the generated message. Stores the
* message as a class name and a byte array.
*/
static final class SerializedForm implements Serializable {
private static final long serialVersionUID = 0L;
private final String messageClassName;
private final byte[] asBytes;
/**
* Creates the serialized form by calling {@link com.google.protobuf.MessageLite#toByteArray}.
* @param regularForm the message to serialize
*/
SerializedForm(MessageLite regularForm) {
messageClassName = regularForm.getClass().getName();
asBytes = regularForm.toByteArray();
}
/**
* When read from an ObjectInputStream, this method converts this object
* back to the regular form. Part of Java's serialization magic.
* @return a GeneratedMessage of the type that was serialized
*/
@SuppressWarnings("unchecked")
protected Object readResolve() throws ObjectStreamException {
try {
Class messageClass = Class.forName(messageClassName);
java.lang.reflect.Field defaultInstanceField =
messageClass.getDeclaredField("DEFAULT_INSTANCE");
defaultInstanceField.setAccessible(true);
MessageLite defaultInstance = (MessageLite) defaultInstanceField.get(null);
return defaultInstance.newBuilderForType()
.mergeFrom(asBytes)
.buildPartial();
} catch (ClassNotFoundException e) {
throw new RuntimeException("Unable to find proto buffer class: " + messageClassName, e);
} catch (NoSuchFieldException e) {
throw new RuntimeException("Unable to find DEFAULT_INSTANCE in " + messageClassName, e);
} catch (SecurityException e) {
throw new RuntimeException("Unable to call DEFAULT_INSTANCE in " + messageClassName, e);
} catch (IllegalAccessException e) {
throw new RuntimeException("Unable to call parsePartialFrom", e);
} catch (InvalidProtocolBufferException e) {
throw new RuntimeException("Unable to understand proto buffer", e);
}
}
}
/**
* Replaces this object in the output stream with a serialized form.
* Part of Java's serialization magic. Generated sub-classes must override
* this method by calling {@code return super.writeReplace();}
* @return a SerializedForm of this message
*/
protected Object writeReplace() throws ObjectStreamException {
return new SerializedForm(this);
}
/**
* Checks that the {@link Extension} is Lite and returns it as a
* {@link GeneratedExtension}.
*/
private static <
MessageType extends ExtendableMessage,
BuilderType extends ExtendableBuilder,
T>
GeneratedExtension checkIsLite(
ExtensionLite extension) {
if (!extension.isLite()) {
throw new IllegalArgumentException("Expected a lite extension.");
}
return (GeneratedExtension) extension;
}
/**
* A static helper method for checking if a message is initialized, optionally memoizing.
*
* For use by generated code only.
*/
protected static final > boolean isInitialized(
T message, boolean shouldMemoize) {
return message.dynamicMethod(MethodToInvoke.IS_INITIALIZED, shouldMemoize) != null;
}
protected static final > void makeImmutable(T message) {
message.dynamicMethod(MethodToInvoke.MAKE_IMMUTABLE);
}
/**
* A static helper method for parsing a partial from input using the extension registry and the
* instance.
*/
static > T parsePartialFrom(
T instance, CodedInputStream input, ExtensionRegistryLite extensionRegistry)
throws InvalidProtocolBufferException {
try {
return (T) instance.dynamicMethod(
MethodToInvoke.PARSE_PARTIAL_FROM, input, extensionRegistry);
} catch (RuntimeException e) {
if (e.getCause() instanceof InvalidProtocolBufferException) {
throw (InvalidProtocolBufferException) e.getCause();
}
throw e;
}
}
/**
* A {@link Parser} implementation that delegates to the default instance.
*
* For use by generated code only.
*/
protected static class DefaultInstanceBasedParser>
extends AbstractParser {
private T defaultInstance;
public DefaultInstanceBasedParser(T defaultInstance) {
this.defaultInstance = defaultInstance;
}
@Override
public T parsePartialFrom(CodedInputStream input, ExtensionRegistryLite extensionRegistry)
throws InvalidProtocolBufferException {
return GeneratedMessageLite.parsePartialFrom(defaultInstance, input, extensionRegistry);
}
}
protected static IntList newIntList() {
return new IntArrayList();
}
protected static IntList newIntListWithCapacity(int capacity) {
return new IntArrayList(capacity);
}
protected static IntList newIntList(List toCopy) {
return new IntArrayList(toCopy);
}
protected static IntList emptyIntList() {
return IntArrayList.emptyList();
}
protected static LongList newLongList() {
return new LongArrayList();
}
protected static LongList newLongListWithCapacity(int capacity) {
return new LongArrayList(capacity);
}
protected static LongList newLongList(List toCopy) {
return new LongArrayList(toCopy);
}
protected static LongList emptyLongList() {
return LongArrayList.emptyList();
}
protected static FloatList newFloatList() {
return new FloatArrayList();
}
protected static FloatList newFloatListWithCapacity(int capacity) {
return new FloatArrayList(capacity);
}
protected static FloatList newFloatList(List toCopy) {
return new FloatArrayList(toCopy);
}
protected static FloatList emptyFloatList() {
return FloatArrayList.emptyList();
}
protected static DoubleList newDoubleList() {
return new DoubleArrayList();
}
protected static DoubleList newDoubleListWithCapacity(int capacity) {
return new DoubleArrayList(capacity);
}
protected static DoubleList newDoubleList(List toCopy) {
return new DoubleArrayList(toCopy);
}
protected static DoubleList emptyDoubleList() {
return DoubleArrayList.emptyList();
}
protected static BooleanList newBooleanList() {
return new BooleanArrayList();
}
protected static BooleanList newBooleanListWithCapacity(int capacity) {
return new BooleanArrayList(capacity);
}
protected static BooleanList newBooleanList(List toCopy) {
return new BooleanArrayList(toCopy);
}
protected static BooleanList emptyBooleanList() {
return BooleanArrayList.emptyList();
}
protected static ProtobufList newProtobufList() {
return new ProtobufArrayList();
}
protected static ProtobufList newProtobufList(List toCopy) {
return new ProtobufArrayList(toCopy);
}
protected static ProtobufList newProtobufListWithCapacity(int capacity) {
return new ProtobufArrayList(capacity);
}
protected static ProtobufList emptyProtobufList() {
return ProtobufArrayList.emptyList();
}
protected static LazyStringArrayList emptyLazyStringArrayList() {
return LazyStringArrayList.emptyList();
}
}