1// Protocol Buffers - Google's data interchange format 2// Copyright 2008 Google Inc. All rights reserved. 3// https://developers.google.com/protocol-buffers/ 4// 5// Redistribution and use in source and binary forms, with or without 6// modification, are permitted provided that the following conditions are 7// met: 8// 9// * Redistributions of source code must retain the above copyright 10// notice, this list of conditions and the following disclaimer. 11// * Redistributions in binary form must reproduce the above 12// copyright notice, this list of conditions and the following disclaimer 13// in the documentation and/or other materials provided with the 14// distribution. 15// * Neither the name of Google Inc. nor the names of its 16// contributors may be used to endorse or promote products derived from 17// this software without specific prior written permission. 18// 19// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 22// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 23// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 24// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 25// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 29// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 31// This header is private to the ProtobolBuffers library and must NOT be 32// included by any sources outside this library. The contents of this file are 33// subject to change at any time without notice. 34 35#import "GPBCodedInputStream.h" 36 37#import <libkern/OSAtomic.h> 38 39@class GPBUnknownFieldSet; 40@class GPBFieldDescriptor; 41 42typedef struct GPBCodedInputStreamState { 43 const uint8_t *bytes; 44 size_t bufferSize; 45 size_t bufferPos; 46 47 // For parsing subsections of an input stream you can put a hard limit on 48 // how much should be read. Normally the limit is the end of the stream, 49 // but you can adjust it to anywhere, and if you hit it you will be at the 50 // end of the stream, until you adjust the limit. 51 size_t currentLimit; 52 int32_t lastTag; 53 NSUInteger recursionDepth; 54} GPBCodedInputStreamState; 55 56@interface GPBCodedInputStream () { 57 @package 58 struct GPBCodedInputStreamState state_; 59 NSData *buffer_; 60} 61 62// Group support is deprecated, so we hide this interface from users, but 63// support for older data. 64- (void)readGroup:(int32_t)fieldNumber 65 message:(GPBMessage *)message 66 extensionRegistry:(GPBExtensionRegistry *)extensionRegistry; 67 68// Reads a group field value from the stream and merges it into the given 69// UnknownFieldSet. 70- (void)readUnknownGroup:(int32_t)fieldNumber 71 message:(GPBUnknownFieldSet *)message; 72 73// Reads a map entry. 74- (void)readMapEntry:(id)mapDictionary 75 extensionRegistry:(GPBExtensionRegistry *)extensionRegistry 76 field:(GPBFieldDescriptor *)field 77 parentMessage:(GPBMessage *)parentMessage; 78@end 79 80CF_EXTERN_C_BEGIN 81 82int32_t GPBCodedInputStreamReadTag(GPBCodedInputStreamState *state); 83 84double GPBCodedInputStreamReadDouble(GPBCodedInputStreamState *state); 85float GPBCodedInputStreamReadFloat(GPBCodedInputStreamState *state); 86uint64_t GPBCodedInputStreamReadUInt64(GPBCodedInputStreamState *state); 87uint32_t GPBCodedInputStreamReadUInt32(GPBCodedInputStreamState *state); 88int64_t GPBCodedInputStreamReadInt64(GPBCodedInputStreamState *state); 89int32_t GPBCodedInputStreamReadInt32(GPBCodedInputStreamState *state); 90uint64_t GPBCodedInputStreamReadFixed64(GPBCodedInputStreamState *state); 91uint32_t GPBCodedInputStreamReadFixed32(GPBCodedInputStreamState *state); 92int32_t GPBCodedInputStreamReadEnum(GPBCodedInputStreamState *state); 93int32_t GPBCodedInputStreamReadSFixed32(GPBCodedInputStreamState *state); 94int64_t GPBCodedInputStreamReadSFixed64(GPBCodedInputStreamState *state); 95int32_t GPBCodedInputStreamReadSInt32(GPBCodedInputStreamState *state); 96int64_t GPBCodedInputStreamReadSInt64(GPBCodedInputStreamState *state); 97BOOL GPBCodedInputStreamReadBool(GPBCodedInputStreamState *state); 98NSString *GPBCodedInputStreamReadRetainedString(GPBCodedInputStreamState *state) 99 __attribute((ns_returns_retained)); 100NSData *GPBCodedInputStreamReadRetainedBytes(GPBCodedInputStreamState *state) 101 __attribute((ns_returns_retained)); 102NSData *GPBCodedInputStreamReadRetainedBytesNoCopy( 103 GPBCodedInputStreamState *state) __attribute((ns_returns_retained)); 104 105size_t GPBCodedInputStreamPushLimit(GPBCodedInputStreamState *state, 106 size_t byteLimit); 107void GPBCodedInputStreamPopLimit(GPBCodedInputStreamState *state, 108 size_t oldLimit); 109size_t GPBCodedInputStreamBytesUntilLimit(GPBCodedInputStreamState *state); 110BOOL GPBCodedInputStreamIsAtEnd(GPBCodedInputStreamState *state); 111void GPBCodedInputStreamCheckLastTagWas(GPBCodedInputStreamState *state, 112 int32_t value); 113 114CF_EXTERN_C_END 115