LCOV - code coverage report
Current view: top level - toolkit/components/protobuf/src/google/protobuf - wire_format_lite_inl.h (source / functions) Hit Total Coverage
Test: output.info Lines: 18 231 7.8 %
Date: 2017-07-14 16:53:18 Functions: 8 235 3.4 %
Legend: Lines: hit not hit

          Line data    Source code
       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             : // Author: kenton@google.com (Kenton Varda)
      32             : //         wink@google.com (Wink Saville) (refactored from wire_format.h)
      33             : //  Based on original Protocol Buffers design by
      34             : //  Sanjay Ghemawat, Jeff Dean, and others.
      35             : 
      36             : #ifndef GOOGLE_PROTOBUF_WIRE_FORMAT_LITE_INL_H__
      37             : #define GOOGLE_PROTOBUF_WIRE_FORMAT_LITE_INL_H__
      38             : 
      39             : #ifdef _MSC_VER
      40             : // This is required for min/max on VS2013 only.
      41             : #include <algorithm>
      42             : #endif
      43             : 
      44             : #include <string>
      45             : #include <google/protobuf/stubs/common.h>
      46             : #include <google/protobuf/message_lite.h>
      47             : #include <google/protobuf/repeated_field.h>
      48             : #include <google/protobuf/wire_format_lite.h>
      49             : #include <google/protobuf/io/coded_stream.h>
      50             : 
      51             : 
      52             : namespace google {
      53             : namespace protobuf {
      54             : namespace internal {
      55             : 
      56             : // Implementation details of ReadPrimitive.
      57             : 
      58             : template <>
      59             : inline bool WireFormatLite::ReadPrimitive<int32, WireFormatLite::TYPE_INT32>(
      60             :     io::CodedInputStream* input,
      61             :     int32* value) {
      62             :   uint32 temp;
      63         519 :   if (!input->ReadVarint32(&temp)) return false;
      64         519 :   *value = static_cast<int32>(temp);
      65         519 :   return true;
      66             : }
      67             : template <>
      68             : inline bool WireFormatLite::ReadPrimitive<int64, WireFormatLite::TYPE_INT64>(
      69             :     io::CodedInputStream* input,
      70             :     int64* value) {
      71             :   uint64 temp;
      72           0 :   if (!input->ReadVarint64(&temp)) return false;
      73           0 :   *value = static_cast<int64>(temp);
      74           0 :   return true;
      75             : }
      76             : template <>
      77             : inline bool WireFormatLite::ReadPrimitive<uint32, WireFormatLite::TYPE_UINT32>(
      78             :     io::CodedInputStream* input,
      79             :     uint32* value) {
      80           0 :   return input->ReadVarint32(value);
      81             : }
      82             : template <>
      83             : inline bool WireFormatLite::ReadPrimitive<uint64, WireFormatLite::TYPE_UINT64>(
      84             :     io::CodedInputStream* input,
      85             :     uint64* value) {
      86           0 :   return input->ReadVarint64(value);
      87             : }
      88             : template <>
      89             : inline bool WireFormatLite::ReadPrimitive<int32, WireFormatLite::TYPE_SINT32>(
      90             :     io::CodedInputStream* input,
      91             :     int32* value) {
      92             :   uint32 temp;
      93           0 :   if (!input->ReadVarint32(&temp)) return false;
      94           0 :   *value = ZigZagDecode32(temp);
      95           0 :   return true;
      96             : }
      97             : template <>
      98             : inline bool WireFormatLite::ReadPrimitive<int64, WireFormatLite::TYPE_SINT64>(
      99             :     io::CodedInputStream* input,
     100             :     int64* value) {
     101             :   uint64 temp;
     102           0 :   if (!input->ReadVarint64(&temp)) return false;
     103           0 :   *value = ZigZagDecode64(temp);
     104           0 :   return true;
     105             : }
     106             : template <>
     107             : inline bool WireFormatLite::ReadPrimitive<uint32, WireFormatLite::TYPE_FIXED32>(
     108             :     io::CodedInputStream* input,
     109             :     uint32* value) {
     110           0 :   return input->ReadLittleEndian32(value);
     111             : }
     112             : template <>
     113             : inline bool WireFormatLite::ReadPrimitive<uint64, WireFormatLite::TYPE_FIXED64>(
     114             :     io::CodedInputStream* input,
     115             :     uint64* value) {
     116           0 :   return input->ReadLittleEndian64(value);
     117             : }
     118             : template <>
     119             : inline bool WireFormatLite::ReadPrimitive<int32, WireFormatLite::TYPE_SFIXED32>(
     120             :     io::CodedInputStream* input,
     121             :     int32* value) {
     122             :   uint32 temp;
     123           0 :   if (!input->ReadLittleEndian32(&temp)) return false;
     124           0 :   *value = static_cast<int32>(temp);
     125           0 :   return true;
     126             : }
     127             : template <>
     128             : inline bool WireFormatLite::ReadPrimitive<int64, WireFormatLite::TYPE_SFIXED64>(
     129             :     io::CodedInputStream* input,
     130             :     int64* value) {
     131             :   uint64 temp;
     132           0 :   if (!input->ReadLittleEndian64(&temp)) return false;
     133           0 :   *value = static_cast<int64>(temp);
     134           0 :   return true;
     135             : }
     136             : template <>
     137             : inline bool WireFormatLite::ReadPrimitive<float, WireFormatLite::TYPE_FLOAT>(
     138             :     io::CodedInputStream* input,
     139             :     float* value) {
     140             :   uint32 temp;
     141           0 :   if (!input->ReadLittleEndian32(&temp)) return false;
     142           0 :   *value = DecodeFloat(temp);
     143           0 :   return true;
     144             : }
     145             : template <>
     146             : inline bool WireFormatLite::ReadPrimitive<double, WireFormatLite::TYPE_DOUBLE>(
     147             :     io::CodedInputStream* input,
     148             :     double* value) {
     149             :   uint64 temp;
     150           0 :   if (!input->ReadLittleEndian64(&temp)) return false;
     151           0 :   *value = DecodeDouble(temp);
     152           0 :   return true;
     153             : }
     154             : template <>
     155             : inline bool WireFormatLite::ReadPrimitive<bool, WireFormatLite::TYPE_BOOL>(
     156             :     io::CodedInputStream* input,
     157             :     bool* value) {
     158             :   uint64 temp;
     159           6 :   if (!input->ReadVarint64(&temp)) return false;
     160           6 :   *value = temp != 0;
     161           6 :   return true;
     162             : }
     163             : template <>
     164             : inline bool WireFormatLite::ReadPrimitive<int, WireFormatLite::TYPE_ENUM>(
     165             :     io::CodedInputStream* input,
     166             :     int* value) {
     167             :   uint32 temp;
     168         711 :   if (!input->ReadVarint32(&temp)) return false;
     169         711 :   *value = static_cast<int>(temp);
     170         711 :   return true;
     171             : }
     172             : 
     173             : template <>
     174             : inline const uint8* WireFormatLite::ReadPrimitiveFromArray<
     175             :   uint32, WireFormatLite::TYPE_FIXED32>(
     176             :     const uint8* buffer,
     177             :     uint32* value) {
     178             :   return io::CodedInputStream::ReadLittleEndian32FromArray(buffer, value);
     179             : }
     180             : template <>
     181             : inline const uint8* WireFormatLite::ReadPrimitiveFromArray<
     182             :   uint64, WireFormatLite::TYPE_FIXED64>(
     183             :     const uint8* buffer,
     184             :     uint64* value) {
     185             :   return io::CodedInputStream::ReadLittleEndian64FromArray(buffer, value);
     186             : }
     187             : template <>
     188             : inline const uint8* WireFormatLite::ReadPrimitiveFromArray<
     189             :   int32, WireFormatLite::TYPE_SFIXED32>(
     190             :     const uint8* buffer,
     191             :     int32* value) {
     192             :   uint32 temp;
     193             :   buffer = io::CodedInputStream::ReadLittleEndian32FromArray(buffer, &temp);
     194             :   *value = static_cast<int32>(temp);
     195             :   return buffer;
     196             : }
     197             : template <>
     198             : inline const uint8* WireFormatLite::ReadPrimitiveFromArray<
     199             :   int64, WireFormatLite::TYPE_SFIXED64>(
     200             :     const uint8* buffer,
     201             :     int64* value) {
     202             :   uint64 temp;
     203             :   buffer = io::CodedInputStream::ReadLittleEndian64FromArray(buffer, &temp);
     204             :   *value = static_cast<int64>(temp);
     205             :   return buffer;
     206             : }
     207             : template <>
     208             : inline const uint8* WireFormatLite::ReadPrimitiveFromArray<
     209             :   float, WireFormatLite::TYPE_FLOAT>(
     210             :     const uint8* buffer,
     211             :     float* value) {
     212             :   uint32 temp;
     213           0 :   buffer = io::CodedInputStream::ReadLittleEndian32FromArray(buffer, &temp);
     214           0 :   *value = DecodeFloat(temp);
     215           0 :   return buffer;
     216             : }
     217             : template <>
     218             : inline const uint8* WireFormatLite::ReadPrimitiveFromArray<
     219             :   double, WireFormatLite::TYPE_DOUBLE>(
     220             :     const uint8* buffer,
     221             :     double* value) {
     222             :   uint64 temp;
     223             :   buffer = io::CodedInputStream::ReadLittleEndian64FromArray(buffer, &temp);
     224             :   *value = DecodeDouble(temp);
     225             :   return buffer;
     226             : }
     227             : 
     228             : template <typename CType, enum WireFormatLite::FieldType DeclaredType>
     229             : inline bool WireFormatLite::ReadRepeatedPrimitive(
     230             :     int,  // tag_size, unused.
     231             :     uint32 tag,
     232             :     io::CodedInputStream* input,
     233             :     RepeatedField<CType>* values) {
     234             :   CType value;
     235           0 :   if (!ReadPrimitive<CType, DeclaredType>(input, &value)) return false;
     236           0 :   values->Add(value);
     237           0 :   int elements_already_reserved = values->Capacity() - values->size();
     238           0 :   while (elements_already_reserved > 0 && input->ExpectTag(tag)) {
     239           0 :     if (!ReadPrimitive<CType, DeclaredType>(input, &value)) return false;
     240           0 :     values->AddAlreadyReserved(value);
     241           0 :     elements_already_reserved--;
     242             :   }
     243           0 :   return true;
     244             : }
     245             : 
     246             : template <typename CType, enum WireFormatLite::FieldType DeclaredType>
     247             : inline bool WireFormatLite::ReadRepeatedFixedSizePrimitive(
     248             :     int tag_size,
     249             :     uint32 tag,
     250             :     io::CodedInputStream* input,
     251             :     RepeatedField<CType>* values) {
     252           0 :   GOOGLE_DCHECK_EQ(UInt32Size(tag), tag_size);
     253             :   CType value;
     254           0 :   if (!ReadPrimitive<CType, DeclaredType>(input, &value))
     255           0 :     return false;
     256           0 :   values->Add(value);
     257             : 
     258             :   // For fixed size values, repeated values can be read more quickly by
     259             :   // reading directly from a raw array.
     260             :   //
     261             :   // We can get a tight loop by only reading as many elements as can be
     262             :   // added to the RepeatedField without having to do any resizing. Additionally,
     263             :   // we only try to read as many elements as are available from the current
     264             :   // buffer space. Doing so avoids having to perform boundary checks when
     265             :   // reading the value: the maximum number of elements that can be read is
     266             :   // known outside of the loop.
     267             :   const void* void_pointer;
     268             :   int size;
     269             :   input->GetDirectBufferPointerInline(&void_pointer, &size);
     270           0 :   if (size > 0) {
     271           0 :     const uint8* buffer = reinterpret_cast<const uint8*>(void_pointer);
     272             :     // The number of bytes each type occupies on the wire.
     273           0 :     const int per_value_size = tag_size + sizeof(value);
     274             : 
     275           0 :     int elements_available = min(values->Capacity() - values->size(),
     276           0 :                                  size / per_value_size);
     277           0 :     int num_read = 0;
     278           0 :     while (num_read < elements_available &&
     279             :            (buffer = io::CodedInputStream::ExpectTagFromArray(
     280             :                buffer, tag)) != NULL) {
     281           0 :       buffer = ReadPrimitiveFromArray<CType, DeclaredType>(buffer, &value);
     282           0 :       values->AddAlreadyReserved(value);
     283           0 :       ++num_read;
     284             :     }
     285           0 :     const int read_bytes = num_read * per_value_size;
     286           0 :     if (read_bytes > 0) {
     287           0 :       input->Skip(read_bytes);
     288             :     }
     289             :   }
     290           0 :   return true;
     291             : }
     292             : 
     293             : // Specializations of ReadRepeatedPrimitive for the fixed size types, which use
     294             : // the optimized code path.
     295             : #define READ_REPEATED_FIXED_SIZE_PRIMITIVE(CPPTYPE, DECLARED_TYPE)             \
     296             : template <>                                                                    \
     297             : inline bool WireFormatLite::ReadRepeatedPrimitive<                             \
     298             :   CPPTYPE, WireFormatLite::DECLARED_TYPE>(                                     \
     299             :     int tag_size,                                                              \
     300             :     uint32 tag,                                                                \
     301             :     io::CodedInputStream* input,                                               \
     302             :     RepeatedField<CPPTYPE>* values) {                                          \
     303             :   return ReadRepeatedFixedSizePrimitive<                                       \
     304             :     CPPTYPE, WireFormatLite::DECLARED_TYPE>(                                   \
     305             :       tag_size, tag, input, values);                                           \
     306             : }
     307             : 
     308             : READ_REPEATED_FIXED_SIZE_PRIMITIVE(uint32, TYPE_FIXED32)
     309             : READ_REPEATED_FIXED_SIZE_PRIMITIVE(uint64, TYPE_FIXED64)
     310             : READ_REPEATED_FIXED_SIZE_PRIMITIVE(int32, TYPE_SFIXED32)
     311             : READ_REPEATED_FIXED_SIZE_PRIMITIVE(int64, TYPE_SFIXED64)
     312           0 : READ_REPEATED_FIXED_SIZE_PRIMITIVE(float, TYPE_FLOAT)
     313             : READ_REPEATED_FIXED_SIZE_PRIMITIVE(double, TYPE_DOUBLE)
     314             : 
     315             : #undef READ_REPEATED_FIXED_SIZE_PRIMITIVE
     316             : 
     317             : template <typename CType, enum WireFormatLite::FieldType DeclaredType>
     318           0 : bool WireFormatLite::ReadRepeatedPrimitiveNoInline(
     319             :     int tag_size,
     320             :     uint32 tag,
     321             :     io::CodedInputStream* input,
     322             :     RepeatedField<CType>* value) {
     323             :   return ReadRepeatedPrimitive<CType, DeclaredType>(
     324           0 :       tag_size, tag, input, value);
     325             : }
     326             : 
     327             : template <typename CType, enum WireFormatLite::FieldType DeclaredType>
     328             : inline bool WireFormatLite::ReadPackedPrimitive(io::CodedInputStream* input,
     329             :                                                 RepeatedField<CType>* values) {
     330             :   uint32 length;
     331           0 :   if (!input->ReadVarint32(&length)) return false;
     332           0 :   io::CodedInputStream::Limit limit = input->PushLimit(length);
     333           0 :   while (input->BytesUntilLimit() > 0) {
     334             :     CType value;
     335           0 :     if (!ReadPrimitive<CType, DeclaredType>(input, &value)) return false;
     336           0 :     values->Add(value);
     337             :   }
     338           0 :   input->PopLimit(limit);
     339           0 :   return true;
     340             : }
     341             : 
     342             : template <typename CType, enum WireFormatLite::FieldType DeclaredType>
     343             : inline bool WireFormatLite::ReadPackedFixedSizePrimitive(
     344             :     io::CodedInputStream* input, RepeatedField<CType>* values) {
     345             :   uint32 length;
     346           0 :   if (!input->ReadVarint32(&length)) return false;
     347           0 :   const uint32 old_entries = values->size();
     348           0 :   const uint32 new_entries = length / sizeof(CType);
     349           0 :   const uint32 new_bytes = new_entries * sizeof(CType);
     350           0 :   if (new_bytes != length) return false;
     351             :   // We would *like* to pre-allocate the buffer to write into (for
     352             :   // speed), but *must* avoid performing a very large allocation due
     353             :   // to a malicious user-supplied "length" above.  So we have a fast
     354             :   // path that pre-allocates when the "length" is less than a bound.
     355             :   // We determine the bound by calling BytesUntilTotalBytesLimit() and
     356             :   // BytesUntilLimit().  These return -1 to mean "no limit set".
     357             :   // There are four cases:
     358             :   // TotalBytesLimit  Limit
     359             :   // -1               -1     Use slow path.
     360             :   // -1               >= 0   Use fast path if length <= Limit.
     361             :   // >= 0             -1     Use slow path.
     362             :   // >= 0             >= 0   Use fast path if length <= min(both limits).
     363           0 :   int64 bytes_limit = input->BytesUntilTotalBytesLimit();
     364           0 :   if (bytes_limit == -1) {
     365           0 :     bytes_limit = input->BytesUntilLimit();
     366             :   } else {
     367           0 :     bytes_limit =
     368           0 :         min(bytes_limit, static_cast<int64>(input->BytesUntilLimit()));
     369             :   }
     370           0 :   if (bytes_limit >= new_bytes) {
     371             :     // Fast-path that pre-allocates *values to the final size.
     372             : #if defined(PROTOBUF_LITTLE_ENDIAN)
     373           0 :     values->Resize(old_entries + new_entries, 0);
     374             :     // values->mutable_data() may change after Resize(), so do this after:
     375           0 :     void* dest = reinterpret_cast<void*>(values->mutable_data() + old_entries);
     376           0 :     if (!input->ReadRaw(dest, new_bytes)) {
     377           0 :       values->Truncate(old_entries);
     378           0 :       return false;
     379             :     }
     380             : #else
     381             :     values->Reserve(old_entries + new_entries);
     382             :     CType value;
     383             :     for (uint32 i = 0; i < new_entries; ++i) {
     384             :       if (!ReadPrimitive<CType, DeclaredType>(input, &value)) return false;
     385             :       values->AddAlreadyReserved(value);
     386             :     }
     387             : #endif
     388             :   } else {
     389             :     // This is the slow-path case where "length" may be too large to
     390             :     // safely allocate.  We read as much as we can into *values
     391             :     // without pre-allocating "length" bytes.
     392             :     CType value;
     393           0 :     for (uint32 i = 0; i < new_entries; ++i) {
     394           0 :       if (!ReadPrimitive<CType, DeclaredType>(input, &value)) return false;
     395           0 :       values->Add(value);
     396             :     }
     397             :   }
     398           0 :   return true;
     399             : }
     400             : 
     401             : // Specializations of ReadPackedPrimitive for the fixed size types, which use
     402             : // an optimized code path.
     403             : #define READ_REPEATED_PACKED_FIXED_SIZE_PRIMITIVE(CPPTYPE, DECLARED_TYPE)      \
     404             : template <>                                                                    \
     405             : inline bool WireFormatLite::ReadPackedPrimitive<                               \
     406             :   CPPTYPE, WireFormatLite::DECLARED_TYPE>(                                     \
     407             :     io::CodedInputStream* input,                                               \
     408             :     RepeatedField<CPPTYPE>* values) {                                          \
     409             :   return ReadPackedFixedSizePrimitive<                                         \
     410             :       CPPTYPE, WireFormatLite::DECLARED_TYPE>(input, values);                  \
     411             : }
     412             : 
     413             : READ_REPEATED_PACKED_FIXED_SIZE_PRIMITIVE(uint32, TYPE_FIXED32);
     414             : READ_REPEATED_PACKED_FIXED_SIZE_PRIMITIVE(uint64, TYPE_FIXED64);
     415             : READ_REPEATED_PACKED_FIXED_SIZE_PRIMITIVE(int32, TYPE_SFIXED32);
     416             : READ_REPEATED_PACKED_FIXED_SIZE_PRIMITIVE(int64, TYPE_SFIXED64);
     417           0 : READ_REPEATED_PACKED_FIXED_SIZE_PRIMITIVE(float, TYPE_FLOAT);
     418             : READ_REPEATED_PACKED_FIXED_SIZE_PRIMITIVE(double, TYPE_DOUBLE);
     419             : 
     420             : #undef READ_REPEATED_PACKED_FIXED_SIZE_PRIMITIVE
     421             : 
     422             : template <typename CType, enum WireFormatLite::FieldType DeclaredType>
     423           0 : bool WireFormatLite::ReadPackedPrimitiveNoInline(io::CodedInputStream* input,
     424             :                                                  RepeatedField<CType>* values) {
     425           0 :   return ReadPackedPrimitive<CType, DeclaredType>(input, values);
     426             : }
     427             : 
     428             : 
     429           0 : inline bool WireFormatLite::ReadGroup(int field_number,
     430             :                                       io::CodedInputStream* input,
     431             :                                       MessageLite* value) {
     432           0 :   if (!input->IncrementRecursionDepth()) return false;
     433           0 :   if (!value->MergePartialFromCodedStream(input)) return false;
     434           0 :   input->DecrementRecursionDepth();
     435             :   // Make sure the last thing read was an end tag for this group.
     436           0 :   if (!input->LastTagWas(MakeTag(field_number, WIRETYPE_END_GROUP))) {
     437           0 :     return false;
     438             :   }
     439           0 :   return true;
     440             : }
     441           0 : inline bool WireFormatLite::ReadMessage(io::CodedInputStream* input,
     442             :                                         MessageLite* value) {
     443             :   uint32 length;
     444           0 :   if (!input->ReadVarint32(&length)) return false;
     445           0 :   if (!input->IncrementRecursionDepth()) return false;
     446           0 :   io::CodedInputStream::Limit limit = input->PushLimit(length);
     447           0 :   if (!value->MergePartialFromCodedStream(input)) return false;
     448             :   // Make sure that parsing stopped when the limit was hit, not at an endgroup
     449             :   // tag.
     450           0 :   if (!input->ConsumedEntireMessage()) return false;
     451           0 :   input->PopLimit(limit);
     452           0 :   input->DecrementRecursionDepth();
     453           0 :   return true;
     454             : }
     455             : 
     456             : // We name the template parameter something long and extremely unlikely to occur
     457             : // elsewhere because a *qualified* member access expression designed to avoid
     458             : // virtual dispatch, C++03 [basic.lookup.classref] 3.4.5/4 requires that the
     459             : // name of the qualifying class to be looked up both in the context of the full
     460             : // expression (finding the template parameter) and in the context of the object
     461             : // whose member we are accessing. This could potentially find a nested type
     462             : // within that object. The standard goes on to require these names to refer to
     463             : // the same entity, which this collision would violate. The lack of a safe way
     464             : // to avoid this collision appears to be a defect in the standard, but until it
     465             : // is corrected, we choose the name to avoid accidental collisions.
     466             : template<typename MessageType_WorkAroundCppLookupDefect>
     467             : inline bool WireFormatLite::ReadGroupNoVirtual(
     468             :     int field_number, io::CodedInputStream* input,
     469             :     MessageType_WorkAroundCppLookupDefect* value) {
     470             :   if (!input->IncrementRecursionDepth()) return false;
     471             :   if (!value->
     472             :       MessageType_WorkAroundCppLookupDefect::MergePartialFromCodedStream(input))
     473             :     return false;
     474             :   input->DecrementRecursionDepth();
     475             :   // Make sure the last thing read was an end tag for this group.
     476             :   if (!input->LastTagWas(MakeTag(field_number, WIRETYPE_END_GROUP))) {
     477             :     return false;
     478             :   }
     479             :   return true;
     480             : }
     481             : template<typename MessageType_WorkAroundCppLookupDefect>
     482         576 : inline bool WireFormatLite::ReadMessageNoVirtual(
     483             :     io::CodedInputStream* input, MessageType_WorkAroundCppLookupDefect* value) {
     484             :   uint32 length;
     485         576 :   if (!input->ReadVarint32(&length)) return false;
     486         576 :   if (!input->IncrementRecursionDepth()) return false;
     487         576 :   io::CodedInputStream::Limit limit = input->PushLimit(length);
     488         576 :   if (!value->
     489             :       MessageType_WorkAroundCppLookupDefect::MergePartialFromCodedStream(input))
     490           0 :     return false;
     491             :   // Make sure that parsing stopped when the limit was hit, not at an endgroup
     492             :   // tag.
     493         576 :   if (!input->ConsumedEntireMessage()) return false;
     494         576 :   input->PopLimit(limit);
     495         576 :   input->DecrementRecursionDepth();
     496         576 :   return true;
     497             : }
     498             : 
     499             : // ===================================================================
     500             : 
     501             : inline void WireFormatLite::WriteTag(int field_number, WireType type,
     502             :                                      io::CodedOutputStream* output) {
     503           0 :   output->WriteTag(MakeTag(field_number, type));
     504             : }
     505             : 
     506             : inline void WireFormatLite::WriteInt32NoTag(int32 value,
     507             :                                             io::CodedOutputStream* output) {
     508           0 :   output->WriteVarint32SignExtended(value);
     509             : }
     510             : inline void WireFormatLite::WriteInt64NoTag(int64 value,
     511             :                                             io::CodedOutputStream* output) {
     512           0 :   output->WriteVarint64(static_cast<uint64>(value));
     513             : }
     514             : inline void WireFormatLite::WriteUInt32NoTag(uint32 value,
     515             :                                              io::CodedOutputStream* output) {
     516           0 :   output->WriteVarint32(value);
     517             : }
     518             : inline void WireFormatLite::WriteUInt64NoTag(uint64 value,
     519             :                                              io::CodedOutputStream* output) {
     520           0 :   output->WriteVarint64(value);
     521             : }
     522             : inline void WireFormatLite::WriteSInt32NoTag(int32 value,
     523             :                                              io::CodedOutputStream* output) {
     524           0 :   output->WriteVarint32(ZigZagEncode32(value));
     525             : }
     526             : inline void WireFormatLite::WriteSInt64NoTag(int64 value,
     527             :                                              io::CodedOutputStream* output) {
     528           0 :   output->WriteVarint64(ZigZagEncode64(value));
     529             : }
     530             : inline void WireFormatLite::WriteFixed32NoTag(uint32 value,
     531             :                                               io::CodedOutputStream* output) {
     532           0 :   output->WriteLittleEndian32(value);
     533             : }
     534             : inline void WireFormatLite::WriteFixed64NoTag(uint64 value,
     535             :                                               io::CodedOutputStream* output) {
     536           0 :   output->WriteLittleEndian64(value);
     537             : }
     538             : inline void WireFormatLite::WriteSFixed32NoTag(int32 value,
     539             :                                                io::CodedOutputStream* output) {
     540           0 :   output->WriteLittleEndian32(static_cast<uint32>(value));
     541             : }
     542             : inline void WireFormatLite::WriteSFixed64NoTag(int64 value,
     543             :                                                io::CodedOutputStream* output) {
     544           0 :   output->WriteLittleEndian64(static_cast<uint64>(value));
     545             : }
     546             : inline void WireFormatLite::WriteFloatNoTag(float value,
     547             :                                             io::CodedOutputStream* output) {
     548           0 :   output->WriteLittleEndian32(EncodeFloat(value));
     549             : }
     550             : inline void WireFormatLite::WriteDoubleNoTag(double value,
     551             :                                              io::CodedOutputStream* output) {
     552           0 :   output->WriteLittleEndian64(EncodeDouble(value));
     553             : }
     554             : inline void WireFormatLite::WriteBoolNoTag(bool value,
     555             :                                            io::CodedOutputStream* output) {
     556           0 :   output->WriteVarint32(value ? 1 : 0);
     557             : }
     558             : inline void WireFormatLite::WriteEnumNoTag(int value,
     559             :                                            io::CodedOutputStream* output) {
     560           0 :   output->WriteVarint32SignExtended(value);
     561             : }
     562             : 
     563             : // See comment on ReadGroupNoVirtual to understand the need for this template
     564             : // parameter name.
     565             : template<typename MessageType_WorkAroundCppLookupDefect>
     566             : inline void WireFormatLite::WriteGroupNoVirtual(
     567             :     int field_number, const MessageType_WorkAroundCppLookupDefect& value,
     568             :     io::CodedOutputStream* output) {
     569             :   WriteTag(field_number, WIRETYPE_START_GROUP, output);
     570             :   value.MessageType_WorkAroundCppLookupDefect::SerializeWithCachedSizes(output);
     571             :   WriteTag(field_number, WIRETYPE_END_GROUP, output);
     572             : }
     573             : template<typename MessageType_WorkAroundCppLookupDefect>
     574             : inline void WireFormatLite::WriteMessageNoVirtual(
     575             :     int field_number, const MessageType_WorkAroundCppLookupDefect& value,
     576             :     io::CodedOutputStream* output) {
     577             :   WriteTag(field_number, WIRETYPE_LENGTH_DELIMITED, output);
     578             :   output->WriteVarint32(
     579             :       value.MessageType_WorkAroundCppLookupDefect::GetCachedSize());
     580             :   value.MessageType_WorkAroundCppLookupDefect::SerializeWithCachedSizes(output);
     581             : }
     582             : 
     583             : // ===================================================================
     584             : 
     585             : inline uint8* WireFormatLite::WriteTagToArray(int field_number,
     586             :                                               WireType type,
     587             :                                               uint8* target) {
     588           0 :   return io::CodedOutputStream::WriteTagToArray(MakeTag(field_number, type),
     589           0 :                                                 target);
     590             : }
     591             : 
     592             : inline uint8* WireFormatLite::WriteInt32NoTagToArray(int32 value,
     593             :                                                      uint8* target) {
     594           0 :   return io::CodedOutputStream::WriteVarint32SignExtendedToArray(value, target);
     595             : }
     596             : inline uint8* WireFormatLite::WriteInt64NoTagToArray(int64 value,
     597             :                                                      uint8* target) {
     598           0 :   return io::CodedOutputStream::WriteVarint64ToArray(
     599           0 :       static_cast<uint64>(value), target);
     600             : }
     601             : inline uint8* WireFormatLite::WriteUInt32NoTagToArray(uint32 value,
     602             :                                                       uint8* target) {
     603           0 :   return io::CodedOutputStream::WriteVarint32ToArray(value, target);
     604             : }
     605             : inline uint8* WireFormatLite::WriteUInt64NoTagToArray(uint64 value,
     606             :                                                       uint8* target) {
     607           0 :   return io::CodedOutputStream::WriteVarint64ToArray(value, target);
     608             : }
     609             : inline uint8* WireFormatLite::WriteSInt32NoTagToArray(int32 value,
     610             :                                                       uint8* target) {
     611           0 :   return io::CodedOutputStream::WriteVarint32ToArray(ZigZagEncode32(value),
     612           0 :                                                      target);
     613             : }
     614             : inline uint8* WireFormatLite::WriteSInt64NoTagToArray(int64 value,
     615             :                                                       uint8* target) {
     616           0 :   return io::CodedOutputStream::WriteVarint64ToArray(ZigZagEncode64(value),
     617           0 :                                                      target);
     618             : }
     619             : inline uint8* WireFormatLite::WriteFixed32NoTagToArray(uint32 value,
     620             :                                                        uint8* target) {
     621           0 :   return io::CodedOutputStream::WriteLittleEndian32ToArray(value, target);
     622             : }
     623             : inline uint8* WireFormatLite::WriteFixed64NoTagToArray(uint64 value,
     624             :                                                        uint8* target) {
     625           0 :   return io::CodedOutputStream::WriteLittleEndian64ToArray(value, target);
     626             : }
     627             : inline uint8* WireFormatLite::WriteSFixed32NoTagToArray(int32 value,
     628             :                                                         uint8* target) {
     629           0 :   return io::CodedOutputStream::WriteLittleEndian32ToArray(
     630           0 :       static_cast<uint32>(value), target);
     631             : }
     632             : inline uint8* WireFormatLite::WriteSFixed64NoTagToArray(int64 value,
     633             :                                                         uint8* target) {
     634           0 :   return io::CodedOutputStream::WriteLittleEndian64ToArray(
     635           0 :       static_cast<uint64>(value), target);
     636             : }
     637             : inline uint8* WireFormatLite::WriteFloatNoTagToArray(float value,
     638             :                                                      uint8* target) {
     639           0 :   return io::CodedOutputStream::WriteLittleEndian32ToArray(EncodeFloat(value),
     640           0 :                                                            target);
     641             : }
     642             : inline uint8* WireFormatLite::WriteDoubleNoTagToArray(double value,
     643             :                                                       uint8* target) {
     644           0 :   return io::CodedOutputStream::WriteLittleEndian64ToArray(EncodeDouble(value),
     645           0 :                                                            target);
     646             : }
     647             : inline uint8* WireFormatLite::WriteBoolNoTagToArray(bool value,
     648             :                                                     uint8* target) {
     649           0 :   return io::CodedOutputStream::WriteVarint32ToArray(value ? 1 : 0, target);
     650             : }
     651             : inline uint8* WireFormatLite::WriteEnumNoTagToArray(int value,
     652             :                                                     uint8* target) {
     653           0 :   return io::CodedOutputStream::WriteVarint32SignExtendedToArray(value, target);
     654             : }
     655             : 
     656             : inline uint8* WireFormatLite::WriteInt32ToArray(int field_number,
     657             :                                                 int32 value,
     658             :                                                 uint8* target) {
     659           0 :   target = WriteTagToArray(field_number, WIRETYPE_VARINT, target);
     660           0 :   return WriteInt32NoTagToArray(value, target);
     661             : }
     662             : inline uint8* WireFormatLite::WriteInt64ToArray(int field_number,
     663             :                                                 int64 value,
     664             :                                                 uint8* target) {
     665           0 :   target = WriteTagToArray(field_number, WIRETYPE_VARINT, target);
     666           0 :   return WriteInt64NoTagToArray(value, target);
     667             : }
     668             : inline uint8* WireFormatLite::WriteUInt32ToArray(int field_number,
     669             :                                                  uint32 value,
     670             :                                                  uint8* target) {
     671           0 :   target = WriteTagToArray(field_number, WIRETYPE_VARINT, target);
     672           0 :   return WriteUInt32NoTagToArray(value, target);
     673             : }
     674             : inline uint8* WireFormatLite::WriteUInt64ToArray(int field_number,
     675             :                                                  uint64 value,
     676             :                                                  uint8* target) {
     677           0 :   target = WriteTagToArray(field_number, WIRETYPE_VARINT, target);
     678           0 :   return WriteUInt64NoTagToArray(value, target);
     679             : }
     680             : inline uint8* WireFormatLite::WriteSInt32ToArray(int field_number,
     681             :                                                  int32 value,
     682             :                                                  uint8* target) {
     683           0 :   target = WriteTagToArray(field_number, WIRETYPE_VARINT, target);
     684           0 :   return WriteSInt32NoTagToArray(value, target);
     685             : }
     686             : inline uint8* WireFormatLite::WriteSInt64ToArray(int field_number,
     687             :                                                  int64 value,
     688             :                                                  uint8* target) {
     689           0 :   target = WriteTagToArray(field_number, WIRETYPE_VARINT, target);
     690           0 :   return WriteSInt64NoTagToArray(value, target);
     691             : }
     692             : inline uint8* WireFormatLite::WriteFixed32ToArray(int field_number,
     693             :                                                   uint32 value,
     694             :                                                   uint8* target) {
     695           0 :   target = WriteTagToArray(field_number, WIRETYPE_FIXED32, target);
     696           0 :   return WriteFixed32NoTagToArray(value, target);
     697             : }
     698             : inline uint8* WireFormatLite::WriteFixed64ToArray(int field_number,
     699             :                                                   uint64 value,
     700             :                                                   uint8* target) {
     701           0 :   target = WriteTagToArray(field_number, WIRETYPE_FIXED64, target);
     702           0 :   return WriteFixed64NoTagToArray(value, target);
     703             : }
     704             : inline uint8* WireFormatLite::WriteSFixed32ToArray(int field_number,
     705             :                                                    int32 value,
     706             :                                                    uint8* target) {
     707           0 :   target = WriteTagToArray(field_number, WIRETYPE_FIXED32, target);
     708           0 :   return WriteSFixed32NoTagToArray(value, target);
     709             : }
     710             : inline uint8* WireFormatLite::WriteSFixed64ToArray(int field_number,
     711             :                                                    int64 value,
     712             :                                                    uint8* target) {
     713           0 :   target = WriteTagToArray(field_number, WIRETYPE_FIXED64, target);
     714           0 :   return WriteSFixed64NoTagToArray(value, target);
     715             : }
     716             : inline uint8* WireFormatLite::WriteFloatToArray(int field_number,
     717             :                                                 float value,
     718             :                                                 uint8* target) {
     719           0 :   target = WriteTagToArray(field_number, WIRETYPE_FIXED32, target);
     720           0 :   return WriteFloatNoTagToArray(value, target);
     721             : }
     722             : inline uint8* WireFormatLite::WriteDoubleToArray(int field_number,
     723             :                                                  double value,
     724             :                                                  uint8* target) {
     725           0 :   target = WriteTagToArray(field_number, WIRETYPE_FIXED64, target);
     726           0 :   return WriteDoubleNoTagToArray(value, target);
     727             : }
     728             : inline uint8* WireFormatLite::WriteBoolToArray(int field_number,
     729             :                                                bool value,
     730             :                                                uint8* target) {
     731           0 :   target = WriteTagToArray(field_number, WIRETYPE_VARINT, target);
     732           0 :   return WriteBoolNoTagToArray(value, target);
     733             : }
     734             : inline uint8* WireFormatLite::WriteEnumToArray(int field_number,
     735             :                                                int value,
     736             :                                                uint8* target) {
     737           0 :   target = WriteTagToArray(field_number, WIRETYPE_VARINT, target);
     738           0 :   return WriteEnumNoTagToArray(value, target);
     739             : }
     740             : 
     741             : inline uint8* WireFormatLite::WriteStringToArray(int field_number,
     742             :                                                  const string& value,
     743             :                                                  uint8* target) {
     744             :   // String is for UTF-8 text only
     745             :   // WARNING:  In wire_format.cc, both strings and bytes are handled by
     746             :   //   WriteString() to avoid code duplication.  If the implementations become
     747             :   //   different, you will need to update that usage.
     748           0 :   target = WriteTagToArray(field_number, WIRETYPE_LENGTH_DELIMITED, target);
     749           0 :   return io::CodedOutputStream::WriteStringWithSizeToArray(value, target);
     750             : }
     751             : inline uint8* WireFormatLite::WriteBytesToArray(int field_number,
     752             :                                                 const string& value,
     753             :                                                 uint8* target) {
     754           0 :   target = WriteTagToArray(field_number, WIRETYPE_LENGTH_DELIMITED, target);
     755           0 :   return io::CodedOutputStream::WriteStringWithSizeToArray(value, target);
     756             : }
     757             : 
     758             : 
     759             : inline uint8* WireFormatLite::WriteGroupToArray(int field_number,
     760             :                                                 const MessageLite& value,
     761             :                                                 uint8* target) {
     762           0 :   target = WriteTagToArray(field_number, WIRETYPE_START_GROUP, target);
     763           0 :   target = value.SerializeWithCachedSizesToArray(target);
     764           0 :   return WriteTagToArray(field_number, WIRETYPE_END_GROUP, target);
     765             : }
     766             : inline uint8* WireFormatLite::WriteMessageToArray(int field_number,
     767             :                                                   const MessageLite& value,
     768             :                                                   uint8* target) {
     769           0 :   target = WriteTagToArray(field_number, WIRETYPE_LENGTH_DELIMITED, target);
     770           0 :   target = io::CodedOutputStream::WriteVarint32ToArray(
     771           0 :     value.GetCachedSize(), target);
     772           0 :   return value.SerializeWithCachedSizesToArray(target);
     773             : }
     774             : 
     775             : // See comment on ReadGroupNoVirtual to understand the need for this template
     776             : // parameter name.
     777             : template<typename MessageType_WorkAroundCppLookupDefect>
     778             : inline uint8* WireFormatLite::WriteGroupNoVirtualToArray(
     779             :     int field_number, const MessageType_WorkAroundCppLookupDefect& value,
     780             :     uint8* target) {
     781             :   target = WriteTagToArray(field_number, WIRETYPE_START_GROUP, target);
     782             :   target = value.MessageType_WorkAroundCppLookupDefect
     783             :       ::SerializeWithCachedSizesToArray(target);
     784             :   return WriteTagToArray(field_number, WIRETYPE_END_GROUP, target);
     785             : }
     786             : template<typename MessageType_WorkAroundCppLookupDefect>
     787             : inline uint8* WireFormatLite::WriteMessageNoVirtualToArray(
     788             :     int field_number, const MessageType_WorkAroundCppLookupDefect& value,
     789             :     uint8* target) {
     790           0 :   target = WriteTagToArray(field_number, WIRETYPE_LENGTH_DELIMITED, target);
     791           0 :   target = io::CodedOutputStream::WriteVarint32ToArray(
     792             :     value.MessageType_WorkAroundCppLookupDefect::GetCachedSize(), target);
     793             :   return value.MessageType_WorkAroundCppLookupDefect
     794           0 :       ::SerializeWithCachedSizesToArray(target);
     795             : }
     796             : 
     797             : // ===================================================================
     798             : 
     799           0 : inline int WireFormatLite::Int32Size(int32 value) {
     800           0 :   return io::CodedOutputStream::VarintSize32SignExtended(value);
     801             : }
     802           0 : inline int WireFormatLite::Int64Size(int64 value) {
     803           0 :   return io::CodedOutputStream::VarintSize64(static_cast<uint64>(value));
     804             : }
     805           0 : inline int WireFormatLite::UInt32Size(uint32 value) {
     806           0 :   return io::CodedOutputStream::VarintSize32(value);
     807             : }
     808           0 : inline int WireFormatLite::UInt64Size(uint64 value) {
     809           0 :   return io::CodedOutputStream::VarintSize64(value);
     810             : }
     811           0 : inline int WireFormatLite::SInt32Size(int32 value) {
     812           0 :   return io::CodedOutputStream::VarintSize32(ZigZagEncode32(value));
     813             : }
     814           0 : inline int WireFormatLite::SInt64Size(int64 value) {
     815           0 :   return io::CodedOutputStream::VarintSize64(ZigZagEncode64(value));
     816             : }
     817           0 : inline int WireFormatLite::EnumSize(int value) {
     818           0 :   return io::CodedOutputStream::VarintSize32SignExtended(value);
     819             : }
     820             : 
     821           0 : inline int WireFormatLite::StringSize(const string& value) {
     822           0 :   return io::CodedOutputStream::VarintSize32(value.size()) +
     823           0 :          value.size();
     824             : }
     825           0 : inline int WireFormatLite::BytesSize(const string& value) {
     826           0 :   return io::CodedOutputStream::VarintSize32(value.size()) +
     827           0 :          value.size();
     828             : }
     829             : 
     830             : 
     831           0 : inline int WireFormatLite::GroupSize(const MessageLite& value) {
     832           0 :   return value.ByteSize();
     833             : }
     834           0 : inline int WireFormatLite::MessageSize(const MessageLite& value) {
     835           0 :   return LengthDelimitedSize(value.ByteSize());
     836             : }
     837             : 
     838             : // See comment on ReadGroupNoVirtual to understand the need for this template
     839             : // parameter name.
     840             : template<typename MessageType_WorkAroundCppLookupDefect>
     841             : inline int WireFormatLite::GroupSizeNoVirtual(
     842             :     const MessageType_WorkAroundCppLookupDefect& value) {
     843             :   return value.MessageType_WorkAroundCppLookupDefect::ByteSize();
     844             : }
     845             : template<typename MessageType_WorkAroundCppLookupDefect>
     846           0 : inline int WireFormatLite::MessageSizeNoVirtual(
     847             :     const MessageType_WorkAroundCppLookupDefect& value) {
     848           0 :   return LengthDelimitedSize(
     849           0 :       value.MessageType_WorkAroundCppLookupDefect::ByteSize());
     850             : }
     851             : 
     852           0 : inline int WireFormatLite::LengthDelimitedSize(int length) {
     853           0 :   return io::CodedOutputStream::VarintSize32(length) + length;
     854             : }
     855             : 
     856             : }  // namespace internal
     857             : }  // namespace protobuf
     858             : 
     859             : }  // namespace google
     860             : #endif  // GOOGLE_PROTOBUF_WIRE_FORMAT_LITE_INL_H__

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