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 @class GPBUnknownFieldSet; 38 @class GPBFieldDescriptor; 39 40 typedef struct GPBCodedInputStreamState { 41 const uint8_t *bytes; 42 size_t bufferSize; 43 size_t bufferPos; 44 45 // For parsing subsections of an input stream you can put a hard limit on 46 // how much should be read. Normally the limit is the end of the stream, 47 // but you can adjust it to anywhere, and if you hit it you will be at the 48 // end of the stream, until you adjust the limit. 49 size_t currentLimit; 50 int32_t lastTag; 51 NSUInteger recursionDepth; 52 } GPBCodedInputStreamState; 53 GPBCodedInputStream()54 @interface GPBCodedInputStream () { 55 @package 56 struct GPBCodedInputStreamState state_; 57 NSData *buffer_; 58 } 59 60 // Group support is deprecated, so we hide this interface from users, but 61 // support for older data. 62 - (void)readGroup:(int32_t)fieldNumber 63 message:(GPBMessage *)message 64 extensionRegistry:(GPBExtensionRegistry *)extensionRegistry; 65 66 // Reads a group field value from the stream and merges it into the given 67 // UnknownFieldSet. 68 - (void)readUnknownGroup:(int32_t)fieldNumber 69 message:(GPBUnknownFieldSet *)message; 70 71 // Reads a map entry. 72 - (void)readMapEntry:(id)mapDictionary 73 extensionRegistry:(GPBExtensionRegistry *)extensionRegistry 74 field:(GPBFieldDescriptor *)field 75 parentMessage:(GPBMessage *)parentMessage; 76 @end 77 78 CF_EXTERN_C_BEGIN 79 80 int32_t GPBCodedInputStreamReadTag(GPBCodedInputStreamState *state); 81 82 double GPBCodedInputStreamReadDouble(GPBCodedInputStreamState *state); 83 float GPBCodedInputStreamReadFloat(GPBCodedInputStreamState *state); 84 uint64_t GPBCodedInputStreamReadUInt64(GPBCodedInputStreamState *state); 85 uint32_t GPBCodedInputStreamReadUInt32(GPBCodedInputStreamState *state); 86 int64_t GPBCodedInputStreamReadInt64(GPBCodedInputStreamState *state); 87 int32_t GPBCodedInputStreamReadInt32(GPBCodedInputStreamState *state); 88 uint64_t GPBCodedInputStreamReadFixed64(GPBCodedInputStreamState *state); 89 uint32_t GPBCodedInputStreamReadFixed32(GPBCodedInputStreamState *state); 90 int32_t GPBCodedInputStreamReadEnum(GPBCodedInputStreamState *state); 91 int32_t GPBCodedInputStreamReadSFixed32(GPBCodedInputStreamState *state); 92 int64_t GPBCodedInputStreamReadSFixed64(GPBCodedInputStreamState *state); 93 int32_t GPBCodedInputStreamReadSInt32(GPBCodedInputStreamState *state); 94 int64_t GPBCodedInputStreamReadSInt64(GPBCodedInputStreamState *state); 95 BOOL GPBCodedInputStreamReadBool(GPBCodedInputStreamState *state); 96 NSString *GPBCodedInputStreamReadRetainedString(GPBCodedInputStreamState *state) 97 __attribute((ns_returns_retained)); 98 NSData *GPBCodedInputStreamReadRetainedBytes(GPBCodedInputStreamState *state) 99 __attribute((ns_returns_retained)); 100 NSData *GPBCodedInputStreamReadRetainedBytesNoCopy( 101 GPBCodedInputStreamState *state) __attribute((ns_returns_retained)); 102 103 size_t GPBCodedInputStreamPushLimit(GPBCodedInputStreamState *state, 104 size_t byteLimit); 105 void GPBCodedInputStreamPopLimit(GPBCodedInputStreamState *state, 106 size_t oldLimit); 107 size_t GPBCodedInputStreamBytesUntilLimit(GPBCodedInputStreamState *state); 108 BOOL GPBCodedInputStreamIsAtEnd(GPBCodedInputStreamState *state); 109 void GPBCodedInputStreamCheckLastTagWas(GPBCodedInputStreamState *state, 110 int32_t value); 111 112 CF_EXTERN_C_END 113