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Diffstat (limited to 'src/google/protobuf/message_lite.cc')
| -rw-r--r-- | src/google/protobuf/message_lite.cc | 373 |
1 files changed, 0 insertions, 373 deletions
diff --git a/src/google/protobuf/message_lite.cc b/src/google/protobuf/message_lite.cc deleted file mode 100644 index 3913be1b..00000000 --- a/src/google/protobuf/message_lite.cc +++ /dev/null @@ -1,373 +0,0 @@ -// 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 -// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - -// Authors: wink@google.com (Wink Saville), -// kenton@google.com (Kenton Varda) -// Based on original Protocol Buffers design by -// Sanjay Ghemawat, Jeff Dean, and others. - -#include <google/protobuf/message_lite.h> -#include <google/protobuf/arena.h> -#include <google/protobuf/repeated_field.h> -#include <string> -#include <google/protobuf/stubs/logging.h> -#include <google/protobuf/stubs/common.h> -#include <google/protobuf/io/coded_stream.h> -#include <google/protobuf/io/zero_copy_stream_impl_lite.h> -#include <google/protobuf/stubs/stl_util.h> - -namespace google { -namespace protobuf { - -MessageLite::~MessageLite() {} - -string MessageLite::InitializationErrorString() const { - return "(cannot determine missing fields for lite message)"; -} - -namespace { - -// When serializing, we first compute the byte size, then serialize the message. -// If serialization produces a different number of bytes than expected, we -// call this function, which crashes. The problem could be due to a bug in the -// protobuf implementation but is more likely caused by concurrent modification -// of the message. This function attempts to distinguish between the two and -// provide a useful error message. -void ByteSizeConsistencyError(int byte_size_before_serialization, - int byte_size_after_serialization, - int bytes_produced_by_serialization, - const MessageLite& message) { - GOOGLE_CHECK_EQ(byte_size_before_serialization, byte_size_after_serialization) - << message.GetTypeName() - << " was modified concurrently during serialization."; - GOOGLE_CHECK_EQ(bytes_produced_by_serialization, byte_size_before_serialization) - << "Byte size calculation and serialization were inconsistent. This " - "may indicate a bug in protocol buffers or it may be caused by " - "concurrent modification of " << message.GetTypeName() << "."; - GOOGLE_LOG(FATAL) << "This shouldn't be called if all the sizes are equal."; -} - -string InitializationErrorMessage(const char* action, - const MessageLite& message) { - // Note: We want to avoid depending on strutil in the lite library, otherwise - // we'd use: - // - // return strings::Substitute( - // "Can't $0 message of type \"$1\" because it is missing required " - // "fields: $2", - // action, message.GetTypeName(), - // message.InitializationErrorString()); - - string result; - result += "Can't "; - result += action; - result += " message of type \""; - result += message.GetTypeName(); - result += "\" because it is missing required fields: "; - result += message.InitializationErrorString(); - return result; -} - -// Several of the Parse methods below just do one thing and then call another -// method. In a naive implementation, we might have ParseFromString() call -// ParseFromArray() which would call ParseFromZeroCopyStream() which would call -// ParseFromCodedStream() which would call MergeFromCodedStream() which would -// call MergePartialFromCodedStream(). However, when parsing very small -// messages, every function call introduces significant overhead. To avoid -// this without reproducing code, we use these forced-inline helpers. -GOOGLE_ATTRIBUTE_ALWAYS_INLINE bool InlineMergeFromCodedStream( - io::CodedInputStream* input, MessageLite* message); -GOOGLE_ATTRIBUTE_ALWAYS_INLINE bool InlineParseFromCodedStream( - io::CodedInputStream* input, MessageLite* message); -GOOGLE_ATTRIBUTE_ALWAYS_INLINE bool InlineParsePartialFromCodedStream( - io::CodedInputStream* input, MessageLite* message); -GOOGLE_ATTRIBUTE_ALWAYS_INLINE bool InlineParseFromArray( - const void* data, int size, MessageLite* message); -GOOGLE_ATTRIBUTE_ALWAYS_INLINE bool InlineParsePartialFromArray( - const void* data, int size, MessageLite* message); - -inline bool InlineMergeFromCodedStream(io::CodedInputStream* input, - MessageLite* message) { - if (!message->MergePartialFromCodedStream(input)) return false; - if (!message->IsInitialized()) { - GOOGLE_LOG(ERROR) << InitializationErrorMessage("parse", *message); - return false; - } - return true; -} - -inline bool InlineParseFromCodedStream(io::CodedInputStream* input, - MessageLite* message) { - message->Clear(); - return InlineMergeFromCodedStream(input, message); -} - -inline bool InlineParsePartialFromCodedStream(io::CodedInputStream* input, - MessageLite* message) { - message->Clear(); - return message->MergePartialFromCodedStream(input); -} - -inline bool InlineParseFromArray( - const void* data, int size, MessageLite* message) { - io::CodedInputStream input(reinterpret_cast<const uint8*>(data), size); - return InlineParseFromCodedStream(&input, message) && - input.ConsumedEntireMessage(); -} - -inline bool InlineParsePartialFromArray( - const void* data, int size, MessageLite* message) { - io::CodedInputStream input(reinterpret_cast<const uint8*>(data), size); - return InlineParsePartialFromCodedStream(&input, message) && - input.ConsumedEntireMessage(); -} - -} // namespace - - -MessageLite* MessageLite::New(::google::protobuf::Arena* arena) const { - MessageLite* message = New(); - if (arena != NULL) { - arena->Own(message); - } - return message; -} - -bool MessageLite::MergeFromCodedStream(io::CodedInputStream* input) { - return InlineMergeFromCodedStream(input, this); -} - -bool MessageLite::ParseFromCodedStream(io::CodedInputStream* input) { - return InlineParseFromCodedStream(input, this); -} - -bool MessageLite::ParsePartialFromCodedStream(io::CodedInputStream* input) { - return InlineParsePartialFromCodedStream(input, this); -} - -bool MessageLite::ParseFromZeroCopyStream(io::ZeroCopyInputStream* input) { - io::CodedInputStream decoder(input); - return ParseFromCodedStream(&decoder) && decoder.ConsumedEntireMessage(); -} - -bool MessageLite::ParsePartialFromZeroCopyStream( - io::ZeroCopyInputStream* input) { - io::CodedInputStream decoder(input); - return ParsePartialFromCodedStream(&decoder) && - decoder.ConsumedEntireMessage(); -} - -bool MessageLite::ParseFromBoundedZeroCopyStream( - io::ZeroCopyInputStream* input, int size) { - io::CodedInputStream decoder(input); - decoder.PushLimit(size); - return ParseFromCodedStream(&decoder) && - decoder.ConsumedEntireMessage() && - decoder.BytesUntilLimit() == 0; -} - -bool MessageLite::ParsePartialFromBoundedZeroCopyStream( - io::ZeroCopyInputStream* input, int size) { - io::CodedInputStream decoder(input); - decoder.PushLimit(size); - return ParsePartialFromCodedStream(&decoder) && - decoder.ConsumedEntireMessage() && - decoder.BytesUntilLimit() == 0; -} - -bool MessageLite::ParseFromString(const string& data) { - return InlineParseFromArray(data.data(), data.size(), this); -} - -bool MessageLite::ParsePartialFromString(const string& data) { - return InlineParsePartialFromArray(data.data(), data.size(), this); -} - -bool MessageLite::ParseFromArray(const void* data, int size) { - return InlineParseFromArray(data, size, this); -} - -bool MessageLite::ParsePartialFromArray(const void* data, int size) { - return InlineParsePartialFromArray(data, size, this); -} - - -// =================================================================== - -uint8* MessageLite::InternalSerializeWithCachedSizesToArray( - bool deterministic, uint8* target) const { - // We only optimize this when using optimize_for = SPEED. In other cases - // we just use the CodedOutputStream path. - int size = GetCachedSize(); - io::ArrayOutputStream out(target, size); - io::CodedOutputStream coded_out(&out); - SerializeWithCachedSizes(&coded_out); - GOOGLE_CHECK(!coded_out.HadError()); - return target + size; -} - -bool MessageLite::SerializeToCodedStream(io::CodedOutputStream* output) const { - GOOGLE_DCHECK(IsInitialized()) << InitializationErrorMessage("serialize", *this); - return SerializePartialToCodedStream(output); -} - -bool MessageLite::SerializePartialToCodedStream( - io::CodedOutputStream* output) const { - const int size = ByteSize(); // Force size to be cached. - if (size < 0) { - // Messages >2G cannot be serialized due to overflow computing ByteSize. - GOOGLE_LOG(ERROR) << "Error computing ByteSize (possible overflow?)."; - return false; - } - - uint8* buffer = output->GetDirectBufferForNBytesAndAdvance(size); - if (buffer != NULL) { - uint8* end = SerializeWithCachedSizesToArray(buffer); - if (end - buffer != size) { - ByteSizeConsistencyError(size, ByteSize(), end - buffer, *this); - } - return true; - } else { - int original_byte_count = output->ByteCount(); - SerializeWithCachedSizes(output); - if (output->HadError()) { - return false; - } - int final_byte_count = output->ByteCount(); - - if (final_byte_count - original_byte_count != size) { - ByteSizeConsistencyError(size, ByteSize(), - final_byte_count - original_byte_count, *this); - } - - return true; - } -} - -bool MessageLite::SerializeToZeroCopyStream( - io::ZeroCopyOutputStream* output) const { - io::CodedOutputStream encoder(output); - return SerializeToCodedStream(&encoder); -} - -bool MessageLite::SerializePartialToZeroCopyStream( - io::ZeroCopyOutputStream* output) const { - io::CodedOutputStream encoder(output); - return SerializePartialToCodedStream(&encoder); -} - -bool MessageLite::AppendToString(string* output) const { - GOOGLE_DCHECK(IsInitialized()) << InitializationErrorMessage("serialize", *this); - return AppendPartialToString(output); -} - -bool MessageLite::AppendPartialToString(string* output) const { - int old_size = output->size(); - int byte_size = ByteSize(); - if (byte_size < 0) { - // Messages >2G cannot be serialized due to overflow computing ByteSize. - GOOGLE_LOG(ERROR) << "Error computing ByteSize (possible overflow?)."; - return false; - } - - STLStringResizeUninitialized(output, old_size + byte_size); - uint8* start = - reinterpret_cast<uint8*>(io::mutable_string_data(output) + old_size); - uint8* end = SerializeWithCachedSizesToArray(start); - if (end - start != byte_size) { - ByteSizeConsistencyError(byte_size, ByteSize(), end - start, *this); - } - return true; -} - -bool MessageLite::SerializeToString(string* output) const { - output->clear(); - return AppendToString(output); -} - -bool MessageLite::SerializePartialToString(string* output) const { - output->clear(); - return AppendPartialToString(output); -} - -bool MessageLite::SerializeToArray(void* data, int size) const { - GOOGLE_DCHECK(IsInitialized()) << InitializationErrorMessage("serialize", *this); - return SerializePartialToArray(data, size); -} - -bool MessageLite::SerializePartialToArray(void* data, int size) const { - int byte_size = ByteSize(); - if (size < byte_size) return false; - uint8* start = reinterpret_cast<uint8*>(data); - uint8* end = SerializeWithCachedSizesToArray(start); - if (end - start != byte_size) { - ByteSizeConsistencyError(byte_size, ByteSize(), end - start, *this); - } - return true; -} - -string MessageLite::SerializeAsString() const { - // If the compiler implements the (Named) Return Value Optimization, - // the local variable 'output' will not actually reside on the stack - // of this function, but will be overlaid with the object that the - // caller supplied for the return value to be constructed in. - string output; - if (!AppendToString(&output)) - output.clear(); - return output; -} - -string MessageLite::SerializePartialAsString() const { - string output; - if (!AppendPartialToString(&output)) - output.clear(); - return output; -} - -namespace internal { -template<> -MessageLite* GenericTypeHandler<MessageLite>::NewFromPrototype( - const MessageLite* prototype, google::protobuf::Arena* arena) { - return prototype->New(arena); -} -template <> -void GenericTypeHandler<MessageLite>::Merge(const MessageLite& from, - MessageLite* to) { - to->CheckTypeAndMergeFrom(from); -} -template<> -void GenericTypeHandler<string>::Merge(const string& from, - string* to) { - *to = from; -} -} // namespace internal - -} // namespace protobuf -} // namespace google |