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: jasonh@google.com (Jason Hsueh)
      32             : //
      33             : // Implements methods of coded_stream.h that need to be inlined for performance
      34             : // reasons, but should not be defined in a public header.
      35             : 
      36             : #ifndef GOOGLE_PROTOBUF_IO_CODED_STREAM_INL_H__
      37             : #define GOOGLE_PROTOBUF_IO_CODED_STREAM_INL_H__
      38             : 
      39             : #include <google/protobuf/stubs/logging.h>
      40             : #include <google/protobuf/stubs/common.h>
      41             : #include <google/protobuf/io/coded_stream.h>
      42             : #include <google/protobuf/io/zero_copy_stream_impl_lite.h>
      43             : #include <string>
      44             : #include <google/protobuf/stubs/stl_util.h>
      45             : 
      46             : namespace google {
      47             : namespace protobuf {
      48             : namespace io {
      49             : 
      50             : inline bool CodedInputStream::InternalReadStringInline(string* buffer,
      51     3065912 :                                                        int size) {
      52     1532955 :   if (size < 0) return false;  // security: size is often user-supplied
      53             : 
      54     3065912 :   if (BufferSize() >= size) {
      55     1518615 :     STLStringResizeUninitialized(buffer, size);
      56     1518547 :     std::pair<char*, bool> z = as_string_data(buffer);
      57     1518585 :     if (z.second) {
      58             :       // Oddly enough, memcpy() requires its first two args to be non-NULL even
      59             :       // if we copy 0 bytes.  So, we have ensured that z.first is non-NULL here.
      60             :       GOOGLE_DCHECK(z.first != NULL);
      61     1518581 :       memcpy(z.first, buffer_, size);
      62     1518581 :       Advance(size);
      63             :     }
      64             :     return true;
      65             :   }
      66             : 
      67       14345 :   return ReadStringFallback(buffer, size);
      68             : }
      69             : 
      70           0 : inline bool CodedInputStream::InternalReadRawInline(void* buffer, int size) {
      71             :   int current_buffer_size;
      72           0 :   while ((current_buffer_size = BufferSize()) < size) {
      73             :     // Reading past end of buffer.  Copy what we have, then refresh.
      74           0 :     memcpy(buffer, buffer_, current_buffer_size);
      75           0 :     buffer = reinterpret_cast<uint8*>(buffer) + current_buffer_size;
      76           0 :     size -= current_buffer_size;
      77           0 :     Advance(current_buffer_size);
      78           0 :     if (!Refresh()) return false;
      79             :   }
      80             : 
      81           0 :   memcpy(buffer, buffer_, size);
      82           0 :   Advance(size);
      83             : 
      84             :   return true;
      85             : }
      86             : 
      87             : }  // namespace io
      88             : }  // namespace protobuf
      89             : }  // namespace google
      90             : #endif  // GOOGLE_PROTOBUF_IO_CODED_STREAM_INL_H__