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Core Protocol Buffers library. Protocol Buffers are a way of encoding structured data in an
efficient yet extensible format.
// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc. All rights reserved.
//
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file or at
// https://developers.google.com/open-source/licenses/bsd
package com.google.protobuf;
import static com.google.protobuf.Internal.checkNotNull;
import static com.google.protobuf.WireFormat.WIRETYPE_LENGTH_DELIMITED;
import java.io.IOException;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
/** An adapter between the {@link Writer} interface and {@link CodedOutputStream}. */
@CheckReturnValue
@ExperimentalApi
final class CodedOutputStreamWriter implements Writer {
private final CodedOutputStream output;
public static CodedOutputStreamWriter forCodedOutput(CodedOutputStream output) {
if (output.wrapper != null) {
return output.wrapper;
}
return new CodedOutputStreamWriter(output);
}
private CodedOutputStreamWriter(CodedOutputStream output) {
this.output = checkNotNull(output, "output");
this.output.wrapper = this;
}
@Override
public FieldOrder fieldOrder() {
return FieldOrder.ASCENDING;
}
public int getTotalBytesWritten() {
return output.getTotalBytesWritten();
}
@Override
public void writeSFixed32(int fieldNumber, int value) throws IOException {
output.writeSFixed32(fieldNumber, value);
}
@Override
public void writeInt64(int fieldNumber, long value) throws IOException {
output.writeInt64(fieldNumber, value);
}
@Override
public void writeSFixed64(int fieldNumber, long value) throws IOException {
output.writeSFixed64(fieldNumber, value);
}
@Override
public void writeFloat(int fieldNumber, float value) throws IOException {
output.writeFloat(fieldNumber, value);
}
@Override
public void writeDouble(int fieldNumber, double value) throws IOException {
output.writeDouble(fieldNumber, value);
}
@Override
public void writeEnum(int fieldNumber, int value) throws IOException {
output.writeEnum(fieldNumber, value);
}
@Override
public void writeUInt64(int fieldNumber, long value) throws IOException {
output.writeUInt64(fieldNumber, value);
}
@Override
public void writeInt32(int fieldNumber, int value) throws IOException {
output.writeInt32(fieldNumber, value);
}
@Override
public void writeFixed64(int fieldNumber, long value) throws IOException {
output.writeFixed64(fieldNumber, value);
}
@Override
public void writeFixed32(int fieldNumber, int value) throws IOException {
output.writeFixed32(fieldNumber, value);
}
@Override
public void writeBool(int fieldNumber, boolean value) throws IOException {
output.writeBool(fieldNumber, value);
}
@Override
public void writeString(int fieldNumber, String value) throws IOException {
output.writeString(fieldNumber, value);
}
@Override
public void writeBytes(int fieldNumber, ByteString value) throws IOException {
output.writeBytes(fieldNumber, value);
}
@Override
public void writeUInt32(int fieldNumber, int value) throws IOException {
output.writeUInt32(fieldNumber, value);
}
@Override
public void writeSInt32(int fieldNumber, int value) throws IOException {
output.writeSInt32(fieldNumber, value);
}
@Override
public void writeSInt64(int fieldNumber, long value) throws IOException {
output.writeSInt64(fieldNumber, value);
}
@Override
public void writeMessage(int fieldNumber, Object value) throws IOException {
output.writeMessage(fieldNumber, (MessageLite) value);
}
@Override
public void writeMessage(int fieldNumber, Object value, Schema schema) throws IOException {
output.writeMessage(fieldNumber, (MessageLite) value, schema);
}
@Deprecated
@Override
public void writeGroup(int fieldNumber, Object value) throws IOException {
output.writeGroup(fieldNumber, (MessageLite) value);
}
@Override
public void writeGroup(int fieldNumber, Object value, Schema schema) throws IOException {
output.writeGroup(fieldNumber, (MessageLite) value, schema);
}
@Deprecated
@Override
public void writeStartGroup(int fieldNumber) throws IOException {
output.writeTag(fieldNumber, WireFormat.WIRETYPE_START_GROUP);
}
@Deprecated
@Override
public void writeEndGroup(int fieldNumber) throws IOException {
output.writeTag(fieldNumber, WireFormat.WIRETYPE_END_GROUP);
}
@Override
public final void writeMessageSetItem(int fieldNumber, Object value) throws IOException {
if (value instanceof ByteString) {
output.writeRawMessageSetExtension(fieldNumber, (ByteString) value);
} else {
output.writeMessageSetExtension(fieldNumber, (MessageLite) value);
}
}
@Override
public void writeInt32List(int fieldNumber, List value, boolean packed)
throws IOException {
if (packed) {
output.writeTag(fieldNumber, WIRETYPE_LENGTH_DELIMITED);
// Compute and write the length of the data.
int dataSize = 0;
for (int i = 0; i < value.size(); ++i) {
dataSize += CodedOutputStream.computeInt32SizeNoTag(value.get(i));
}
output.writeUInt32NoTag(dataSize);
// Write the data itself, without any tags.
for (int i = 0; i < value.size(); ++i) {
output.writeInt32NoTag(value.get(i));
}
} else {
for (int i = 0; i < value.size(); ++i) {
output.writeInt32(fieldNumber, value.get(i));
}
}
}
@Override
public void writeFixed32List(int fieldNumber, List value, boolean packed)
throws IOException {
if (packed) {
output.writeTag(fieldNumber, WIRETYPE_LENGTH_DELIMITED);
// Compute and write the length of the data.
int dataSize = 0;
for (int i = 0; i < value.size(); ++i) {
dataSize += CodedOutputStream.computeFixed32SizeNoTag(value.get(i));
}
output.writeUInt32NoTag(dataSize);
// Write the data itself, without any tags.
for (int i = 0; i < value.size(); ++i) {
output.writeFixed32NoTag(value.get(i));
}
} else {
for (int i = 0; i < value.size(); ++i) {
output.writeFixed32(fieldNumber, value.get(i));
}
}
}
@Override
public void writeInt64List(int fieldNumber, List value, boolean packed) throws IOException {
if (packed) {
output.writeTag(fieldNumber, WIRETYPE_LENGTH_DELIMITED);
// Compute and write the length of the data.
int dataSize = 0;
for (int i = 0; i < value.size(); ++i) {
dataSize += CodedOutputStream.computeInt64SizeNoTag(value.get(i));
}
output.writeUInt32NoTag(dataSize);
// Write the data itself, without any tags.
for (int i = 0; i < value.size(); ++i) {
output.writeInt64NoTag(value.get(i));
}
} else {
for (int i = 0; i < value.size(); ++i) {
output.writeInt64(fieldNumber, value.get(i));
}
}
}
@Override
public void writeUInt64List(int fieldNumber, List value, boolean packed)
throws IOException {
if (packed) {
output.writeTag(fieldNumber, WIRETYPE_LENGTH_DELIMITED);
// Compute and write the length of the data.
int dataSize = 0;
for (int i = 0; i < value.size(); ++i) {
dataSize += CodedOutputStream.computeUInt64SizeNoTag(value.get(i));
}
output.writeUInt32NoTag(dataSize);
// Write the data itself, without any tags.
for (int i = 0; i < value.size(); ++i) {
output.writeUInt64NoTag(value.get(i));
}
} else {
for (int i = 0; i < value.size(); ++i) {
output.writeUInt64(fieldNumber, value.get(i));
}
}
}
@Override
public void writeFixed64List(int fieldNumber, List value, boolean packed)
throws IOException {
if (packed) {
output.writeTag(fieldNumber, WIRETYPE_LENGTH_DELIMITED);
// Compute and write the length of the data.
int dataSize = 0;
for (int i = 0; i < value.size(); ++i) {
dataSize += CodedOutputStream.computeFixed64SizeNoTag(value.get(i));
}
output.writeUInt32NoTag(dataSize);
// Write the data itself, without any tags.
for (int i = 0; i < value.size(); ++i) {
output.writeFixed64NoTag(value.get(i));
}
} else {
for (int i = 0; i < value.size(); ++i) {
output.writeFixed64(fieldNumber, value.get(i));
}
}
}
@Override
public void writeFloatList(int fieldNumber, List value, boolean packed)
throws IOException {
if (packed) {
output.writeTag(fieldNumber, WIRETYPE_LENGTH_DELIMITED);
// Compute and write the length of the data.
int dataSize = 0;
for (int i = 0; i < value.size(); ++i) {
dataSize += CodedOutputStream.computeFloatSizeNoTag(value.get(i));
}
output.writeUInt32NoTag(dataSize);
// Write the data itself, without any tags.
for (int i = 0; i < value.size(); ++i) {
output.writeFloatNoTag(value.get(i));
}
} else {
for (int i = 0; i < value.size(); ++i) {
output.writeFloat(fieldNumber, value.get(i));
}
}
}
@Override
public void writeDoubleList(int fieldNumber, List value, boolean packed)
throws IOException {
if (packed) {
output.writeTag(fieldNumber, WIRETYPE_LENGTH_DELIMITED);
// Compute and write the length of the data.
int dataSize = 0;
for (int i = 0; i < value.size(); ++i) {
dataSize += CodedOutputStream.computeDoubleSizeNoTag(value.get(i));
}
output.writeUInt32NoTag(dataSize);
// Write the data itself, without any tags.
for (int i = 0; i < value.size(); ++i) {
output.writeDoubleNoTag(value.get(i));
}
} else {
for (int i = 0; i < value.size(); ++i) {
output.writeDouble(fieldNumber, value.get(i));
}
}
}
@Override
public void writeEnumList(int fieldNumber, List value, boolean packed)
throws IOException {
if (packed) {
output.writeTag(fieldNumber, WIRETYPE_LENGTH_DELIMITED);
// Compute and write the length of the data.
int dataSize = 0;
for (int i = 0; i < value.size(); ++i) {
dataSize += CodedOutputStream.computeEnumSizeNoTag(value.get(i));
}
output.writeUInt32NoTag(dataSize);
// Write the data itself, without any tags.
for (int i = 0; i < value.size(); ++i) {
output.writeEnumNoTag(value.get(i));
}
} else {
for (int i = 0; i < value.size(); ++i) {
output.writeEnum(fieldNumber, value.get(i));
}
}
}
@Override
public void writeBoolList(int fieldNumber, List value, boolean packed)
throws IOException {
if (packed) {
output.writeTag(fieldNumber, WIRETYPE_LENGTH_DELIMITED);
// Compute and write the length of the data.
int dataSize = 0;
for (int i = 0; i < value.size(); ++i) {
dataSize += CodedOutputStream.computeBoolSizeNoTag(value.get(i));
}
output.writeUInt32NoTag(dataSize);
// Write the data itself, without any tags.
for (int i = 0; i < value.size(); ++i) {
output.writeBoolNoTag(value.get(i));
}
} else {
for (int i = 0; i < value.size(); ++i) {
output.writeBool(fieldNumber, value.get(i));
}
}
}
@Override
public void writeStringList(int fieldNumber, List value) throws IOException {
if (value instanceof LazyStringList) {
final LazyStringList lazyList = (LazyStringList) value;
for (int i = 0; i < value.size(); ++i) {
writeLazyString(fieldNumber, lazyList.getRaw(i));
}
} else {
for (int i = 0; i < value.size(); ++i) {
output.writeString(fieldNumber, value.get(i));
}
}
}
private void writeLazyString(int fieldNumber, Object value) throws IOException {
if (value instanceof String) {
output.writeString(fieldNumber, (String) value);
} else {
output.writeBytes(fieldNumber, (ByteString) value);
}
}
@Override
public void writeBytesList(int fieldNumber, List value) throws IOException {
for (int i = 0; i < value.size(); ++i) {
output.writeBytes(fieldNumber, value.get(i));
}
}
@Override
public void writeUInt32List(int fieldNumber, List value, boolean packed)
throws IOException {
if (packed) {
output.writeTag(fieldNumber, WIRETYPE_LENGTH_DELIMITED);
// Compute and write the length of the data.
int dataSize = 0;
for (int i = 0; i < value.size(); ++i) {
dataSize += CodedOutputStream.computeUInt32SizeNoTag(value.get(i));
}
output.writeUInt32NoTag(dataSize);
// Write the data itself, without any tags.
for (int i = 0; i < value.size(); ++i) {
output.writeUInt32NoTag(value.get(i));
}
} else {
for (int i = 0; i < value.size(); ++i) {
output.writeUInt32(fieldNumber, value.get(i));
}
}
}
@Override
public void writeSFixed32List(int fieldNumber, List value, boolean packed)
throws IOException {
if (packed) {
output.writeTag(fieldNumber, WIRETYPE_LENGTH_DELIMITED);
// Compute and write the length of the data.
int dataSize = 0;
for (int i = 0; i < value.size(); ++i) {
dataSize += CodedOutputStream.computeSFixed32SizeNoTag(value.get(i));
}
output.writeUInt32NoTag(dataSize);
// Write the data itself, without any tags.
for (int i = 0; i < value.size(); ++i) {
output.writeSFixed32NoTag(value.get(i));
}
} else {
for (int i = 0; i < value.size(); ++i) {
output.writeSFixed32(fieldNumber, value.get(i));
}
}
}
@Override
public void writeSFixed64List(int fieldNumber, List value, boolean packed)
throws IOException {
if (packed) {
output.writeTag(fieldNumber, WIRETYPE_LENGTH_DELIMITED);
// Compute and write the length of the data.
int dataSize = 0;
for (int i = 0; i < value.size(); ++i) {
dataSize += CodedOutputStream.computeSFixed64SizeNoTag(value.get(i));
}
output.writeUInt32NoTag(dataSize);
// Write the data itself, without any tags.
for (int i = 0; i < value.size(); ++i) {
output.writeSFixed64NoTag(value.get(i));
}
} else {
for (int i = 0; i < value.size(); ++i) {
output.writeSFixed64(fieldNumber, value.get(i));
}
}
}
@Override
public void writeSInt32List(int fieldNumber, List value, boolean packed)
throws IOException {
if (packed) {
output.writeTag(fieldNumber, WIRETYPE_LENGTH_DELIMITED);
// Compute and write the length of the data.
int dataSize = 0;
for (int i = 0; i < value.size(); ++i) {
dataSize += CodedOutputStream.computeSInt32SizeNoTag(value.get(i));
}
output.writeUInt32NoTag(dataSize);
// Write the data itself, without any tags.
for (int i = 0; i < value.size(); ++i) {
output.writeSInt32NoTag(value.get(i));
}
} else {
for (int i = 0; i < value.size(); ++i) {
output.writeSInt32(fieldNumber, value.get(i));
}
}
}
@Override
public void writeSInt64List(int fieldNumber, List value, boolean packed)
throws IOException {
if (packed) {
output.writeTag(fieldNumber, WIRETYPE_LENGTH_DELIMITED);
// Compute and write the length of the data.
int dataSize = 0;
for (int i = 0; i < value.size(); ++i) {
dataSize += CodedOutputStream.computeSInt64SizeNoTag(value.get(i));
}
output.writeUInt32NoTag(dataSize);
// Write the data itself, without any tags.
for (int i = 0; i < value.size(); ++i) {
output.writeSInt64NoTag(value.get(i));
}
} else {
for (int i = 0; i < value.size(); ++i) {
output.writeSInt64(fieldNumber, value.get(i));
}
}
}
@Override
public void writeMessageList(int fieldNumber, List value) throws IOException {
for (int i = 0; i < value.size(); ++i) {
writeMessage(fieldNumber, value.get(i));
}
}
@Override
public void writeMessageList(int fieldNumber, List value, Schema schema) throws IOException {
for (int i = 0; i < value.size(); ++i) {
writeMessage(fieldNumber, value.get(i), schema);
}
}
@Deprecated
@Override
public void writeGroupList(int fieldNumber, List value) throws IOException {
for (int i = 0; i < value.size(); ++i) {
writeGroup(fieldNumber, value.get(i));
}
}
@Override
public void writeGroupList(int fieldNumber, List value, Schema schema) throws IOException {
for (int i = 0; i < value.size(); ++i) {
writeGroup(fieldNumber, value.get(i), schema);
}
}
@Override
public void writeMap(int fieldNumber, MapEntryLite.Metadata metadata, Map map)
throws IOException {
if (output.isSerializationDeterministic()) {
writeDeterministicMap(fieldNumber, metadata, map);
return;
}
for (Map.Entry entry : map.entrySet()) {
output.writeTag(fieldNumber, WIRETYPE_LENGTH_DELIMITED);
output.writeUInt32NoTag(
MapEntryLite.computeSerializedSize(metadata, entry.getKey(), entry.getValue()));
MapEntryLite.writeTo(output, metadata, entry.getKey(), entry.getValue());
}
}
@SuppressWarnings("unchecked")
private void writeDeterministicMap(
int fieldNumber, MapEntryLite.Metadata metadata, Map map) throws IOException {
switch (metadata.keyType) {
case BOOL:
V value;
if ((value = map.get(Boolean.FALSE)) != null) {
writeDeterministicBooleanMapEntry(
fieldNumber, /* key= */ false, value, (MapEntryLite.Metadata) metadata);
}
if ((value = map.get(Boolean.TRUE)) != null) {
writeDeterministicBooleanMapEntry(
fieldNumber, /* key= */ true, value, (MapEntryLite.Metadata) metadata);
}
break;
case FIXED32:
case INT32:
case SFIXED32:
case SINT32:
case UINT32:
writeDeterministicIntegerMap(
fieldNumber, (MapEntryLite.Metadata) metadata, (Map) map);
break;
case FIXED64:
case INT64:
case SFIXED64:
case SINT64:
case UINT64:
writeDeterministicLongMap(
fieldNumber, (MapEntryLite.Metadata) metadata, (Map) map);
break;
case STRING:
writeDeterministicStringMap(
fieldNumber, (MapEntryLite.Metadata) metadata, (Map) map);
break;
default:
throw new IllegalArgumentException("does not support key type: " + metadata.keyType);
}
}
private void writeDeterministicBooleanMapEntry(
int fieldNumber, boolean key, V value, MapEntryLite.Metadata metadata)
throws IOException {
output.writeTag(fieldNumber, WIRETYPE_LENGTH_DELIMITED);
output.writeUInt32NoTag(MapEntryLite.computeSerializedSize(metadata, key, value));
MapEntryLite.writeTo(output, metadata, key, value);
}
private void writeDeterministicIntegerMap(
int fieldNumber, MapEntryLite.Metadata metadata, Map map)
throws IOException {
int[] keys = new int[map.size()];
int index = 0;
for (int k : map.keySet()) {
keys[index++] = k;
}
Arrays.sort(keys);
for (int key : keys) {
V value = map.get(key);
output.writeTag(fieldNumber, WIRETYPE_LENGTH_DELIMITED);
output.writeUInt32NoTag(MapEntryLite.computeSerializedSize(metadata, key, value));
MapEntryLite.writeTo(output, metadata, key, value);
}
}
private void writeDeterministicLongMap(
int fieldNumber, MapEntryLite.Metadata metadata, Map map)
throws IOException {
long[] keys = new long[map.size()];
int index = 0;
for (long k : map.keySet()) {
keys[index++] = k;
}
Arrays.sort(keys);
for (long key : keys) {
V value = map.get(key);
output.writeTag(fieldNumber, WIRETYPE_LENGTH_DELIMITED);
output.writeUInt32NoTag(MapEntryLite.computeSerializedSize(metadata, key, value));
MapEntryLite.writeTo(output, metadata, key, value);
}
}
private void writeDeterministicStringMap(
int fieldNumber, MapEntryLite.Metadata metadata, Map map)
throws IOException {
String[] keys = new String[map.size()];
int index = 0;
for (String k : map.keySet()) {
keys[index++] = k;
}
Arrays.sort(keys);
for (String key : keys) {
V value = map.get(key);
output.writeTag(fieldNumber, WIRETYPE_LENGTH_DELIMITED);
output.writeUInt32NoTag(MapEntryLite.computeSerializedSize(metadata, key, value));
MapEntryLite.writeTo(output, metadata, key, value);
}
}
}
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