RawMessageInfo.java

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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
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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package com.google.protobuf;
 
final class RawMessageInfo implements MessageInfo {
 
  private final MessageLite defaultInstance;
 
  private final String info;
 
  private final Object[] objects;
  private final int flags;
 
  RawMessageInfo(MessageLite defaultInstance, String info, Object[] objects) {
    this.defaultInstance = defaultInstance;
    this.info = info;
    this.objects = objects;
    int position = 0;
    int value = (int) info.charAt(position++);
    if (value < 0xD800) {
      flags = value;
    } else {
      int result = value & 0x1FFF;
      int shift = 13;
      while ((value = info.charAt(position++)) >= 0xD800) {
        result |= (value & 0x1FFF) << shift;
        shift += 13;
      }
      flags = result | (value << shift);
    }
  }
 
  String getStringInfo() {
    return info;
  }
 
  Object[] getObjects() {
    return objects;
  }
 
  @Override
  public MessageLite getDefaultInstance() {
    return defaultInstance;
  }
 
  @Override
  public ProtoSyntax getSyntax() {
    return (flags & 0x1) == 0x1 ? ProtoSyntax.PROTO2 : ProtoSyntax.PROTO3;
  }
 
  @Override
  public boolean isMessageSetWireFormat() {
    return (flags & 0x2) == 0x2;
  }
}