135 lines
5.3 KiB
Java
135 lines
5.3 KiB
Java
// Protocol Buffers - Google's data interchange format
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// Copyright 2008 Google Inc. All rights reserved.
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// https://developers.google.com/protocol-buffers/
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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package com.google.protobuf;
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import java.io.IOException;
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@ExperimentalApi
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@CheckReturnValue
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abstract class UnknownFieldSchema<T, B> {
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/** Whether unknown fields should be dropped. */
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abstract boolean shouldDiscardUnknownFields(Reader reader);
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/** Adds a varint value to the unknown fields. */
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abstract void addVarint(B fields, int number, long value);
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/** Adds a fixed32 value to the unknown fields. */
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abstract void addFixed32(B fields, int number, int value);
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/** Adds a fixed64 value to the unknown fields. */
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abstract void addFixed64(B fields, int number, long value);
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/** Adds a length delimited value to the unknown fields. */
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abstract void addLengthDelimited(B fields, int number, ByteString value);
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/** Adds a group value to the unknown fields. */
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abstract void addGroup(B fields, int number, T subFieldSet);
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/** Create a new builder for unknown fields. */
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abstract B newBuilder();
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/** Returns an immutable instance of the field container. */
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abstract T toImmutable(B fields);
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/**
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* Sets the unknown fields into the message. Caller must take care of the mutability of the
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* fields.
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*/
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abstract void setToMessage(Object message, T fields);
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/** Get the unknown fields from the message. */
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abstract T getFromMessage(Object message);
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/** Returns a builder for unknown fields in the message. */
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abstract B getBuilderFromMessage(Object message);
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/** Sets an unknown field builder into the message. */
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abstract void setBuilderToMessage(Object message, B builder);
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/** Marks unknown fields as immutable. */
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abstract void makeImmutable(Object message);
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/** Merges one field into the unknown fields. */
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final boolean mergeOneFieldFrom(B unknownFields, Reader reader) throws IOException {
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int tag = reader.getTag();
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int fieldNumber = WireFormat.getTagFieldNumber(tag);
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switch (WireFormat.getTagWireType(tag)) {
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case WireFormat.WIRETYPE_VARINT:
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addVarint(unknownFields, fieldNumber, reader.readInt64());
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return true;
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case WireFormat.WIRETYPE_FIXED32:
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addFixed32(unknownFields, fieldNumber, reader.readFixed32());
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return true;
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case WireFormat.WIRETYPE_FIXED64:
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addFixed64(unknownFields, fieldNumber, reader.readFixed64());
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return true;
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case WireFormat.WIRETYPE_LENGTH_DELIMITED:
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addLengthDelimited(unknownFields, fieldNumber, reader.readBytes());
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return true;
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case WireFormat.WIRETYPE_START_GROUP:
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final B subFields = newBuilder();
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int endGroupTag = WireFormat.makeTag(fieldNumber, WireFormat.WIRETYPE_END_GROUP);
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mergeFrom(subFields, reader);
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if (endGroupTag != reader.getTag()) {
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throw InvalidProtocolBufferException.invalidEndTag();
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}
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addGroup(unknownFields, fieldNumber, toImmutable(subFields));
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return true;
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case WireFormat.WIRETYPE_END_GROUP:
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return false;
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default:
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throw InvalidProtocolBufferException.invalidWireType();
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}
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}
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final void mergeFrom(B unknownFields, Reader reader) throws IOException {
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while (true) {
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if (reader.getFieldNumber() == Reader.READ_DONE
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|| !mergeOneFieldFrom(unknownFields, reader)) {
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break;
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}
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}
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}
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abstract void writeTo(T unknownFields, Writer writer) throws IOException;
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abstract void writeAsMessageSetTo(T unknownFields, Writer writer) throws IOException;
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/** Merges {@code source} into {@code destination} and returns the merged instance. */
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abstract T merge(T destination, T source);
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/** Get the serialized size for message set serialization. */
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abstract int getSerializedSizeAsMessageSet(T message);
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abstract int getSerializedSize(T unknowns);
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}
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