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// 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
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
package com.google.protobuf;
import java.io.IOException;
@ExperimentalApi
abstract class UnknownFieldSchema {
/** Whether unknown fields should be dropped. */
abstract boolean shouldDiscardUnknownFields(Reader reader);
/** Adds a varint value to the unknown fields. */
abstract void addVarint(B fields, int number, long value);
/** Adds a fixed32 value to the unknown fields. */
abstract void addFixed32(B fields, int number, int value);
/** Adds a fixed64 value to the unknown fields. */
abstract void addFixed64(B fields, int number, long value);
/** Adds a length delimited value to the unknown fields. */
abstract void addLengthDelimited(B fields, int number, ByteString value);
/** Adds a group value to the unknown fields. */
abstract void addGroup(B fields, int number, T subFieldSet);
/** Create a new builder for unknown fields. */
abstract B newBuilder();
/** Returns an immutable instance of the field container. */
abstract T toImmutable(B fields);
/**
* Sets the unknown fields into the message. Caller must take care of the mutability of the
* fields.
*/
abstract void setToMessage(Object message, T fields);
/** Get the unknown fields from the message. */
abstract T getFromMessage(Object message);
/** Returns a builder for unknown fields in the message. */
abstract B getBuilderFromMessage(Object message);
/** Sets an unknown field builder into the message. */
abstract void setBuilderToMessage(Object message, B builder);
/** Marks unknown fields as immutable. */
abstract void makeImmutable(Object message);
/** Merges one field into the unknown fields. */
final boolean mergeOneFieldFrom(B unknownFields, Reader reader) throws IOException {
int tag = reader.getTag();
int fieldNumber = WireFormat.getTagFieldNumber(tag);
switch (WireFormat.getTagWireType(tag)) {
case WireFormat.WIRETYPE_VARINT:
addVarint(unknownFields, fieldNumber, reader.readInt64());
return true;
case WireFormat.WIRETYPE_FIXED32:
addFixed32(unknownFields, fieldNumber, reader.readFixed32());
return true;
case WireFormat.WIRETYPE_FIXED64:
addFixed64(unknownFields, fieldNumber, reader.readFixed64());
return true;
case WireFormat.WIRETYPE_LENGTH_DELIMITED:
addLengthDelimited(unknownFields, fieldNumber, reader.readBytes());
return true;
case WireFormat.WIRETYPE_START_GROUP:
final B subFields = newBuilder();
int endGroupTag = WireFormat.makeTag(fieldNumber, WireFormat.WIRETYPE_END_GROUP);
mergeFrom(subFields, reader);
if (endGroupTag != reader.getTag()) {
throw InvalidProtocolBufferException.invalidEndTag();
}
addGroup(unknownFields, fieldNumber, toImmutable(subFields));
return true;
case WireFormat.WIRETYPE_END_GROUP:
return false;
default:
throw InvalidProtocolBufferException.invalidWireType();
}
}
final void mergeFrom(B unknownFields, Reader reader) throws IOException {
while (true) {
if (reader.getFieldNumber() == Reader.READ_DONE
|| !mergeOneFieldFrom(unknownFields, reader)) {
break;
}
}
}
abstract void writeTo(T unknownFields, Writer writer) throws IOException;
abstract void writeAsMessageSetTo(T unknownFields, Writer writer) throws IOException;
/** Merges {@code source} into {@code destination} and returns the merged instance. */
abstract T merge(T destination, T source);
/** Get the serialized size for message set serialization. */
abstract int getSerializedSizeAsMessageSet(T message);
abstract int getSerializedSize(T unknowns);
}