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Diffstat (limited to 'src/google/protobuf/generated_message_util.cc')
-rw-r--r-- | src/google/protobuf/generated_message_util.cc | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/src/google/protobuf/generated_message_util.cc b/src/google/protobuf/generated_message_util.cc new file mode 100644 index 00000000..7b813f8a --- /dev/null +++ b/src/google/protobuf/generated_message_util.cc @@ -0,0 +1,78 @@ +// 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. + +// Author: kenton@google.com (Kenton Varda) +// Based on original Protocol Buffers design by +// Sanjay Ghemawat, Jeff Dean, and others. + +#include <google/protobuf/generated_message_util.h> + +#include <limits> + + +namespace google { +namespace protobuf { +namespace internal { + +double Infinity() { + return std::numeric_limits<double>::infinity(); +} +double NaN() { + return std::numeric_limits<double>::quiet_NaN(); +} + +const ::std::string* empty_string_; +GOOGLE_PROTOBUF_DECLARE_ONCE(empty_string_once_init_); + +void DeleteEmptyString() { + delete empty_string_; +} + +void InitEmptyString() { + empty_string_ = new string; + OnShutdown(&DeleteEmptyString); +} + +int StringSpaceUsedExcludingSelf(const string& str) { + const void* start = &str; + const void* end = &str + 1; + if (start <= str.data() && str.data() < end) { + // The string's data is stored inside the string object itself. + return 0; + } else { + return str.capacity(); + } +} + + + +} // namespace internal +} // namespace protobuf +} // namespace google |