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Diffstat (limited to 'src/google/protobuf/arenastring.cc')
-rw-r--r-- | src/google/protobuf/arenastring.cc | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/src/google/protobuf/arenastring.cc b/src/google/protobuf/arenastring.cc new file mode 100644 index 00000000..cce61d74 --- /dev/null +++ b/src/google/protobuf/arenastring.cc @@ -0,0 +1,53 @@ +// 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. + +// The ArenaString implementation is not included in the open-source release. Do +// not include this file in the distribution. + +#include <google/protobuf/arenastring.h> + +namespace google { +namespace protobuf { +namespace internal { + + +void ArenaStringPtr::AssignWithDefault(const ::std::string* default_value, + ArenaStringPtr value) { + const ::std::string* me = *UnsafeRawStringPointer(); + const ::std::string* other = *value.UnsafeRawStringPointer(); + // If the pointers are the same then do nothing. + if (me != other) { + SetNoArena(default_value, value.GetNoArena(default_value)); + } +} + +} // namespace internal +} // namespace protobuf +} // namespace google |