ceph/src/rapidjson/include/rapidjson/ostreamwrapper.h

   1 // Tencent is pleased to support the open source community by making RapidJSON available.
   2 //
   3 // Copyright (C) 2015 THL A29 Limited, a Tencent company, and Milo Yip. All rights reserved.
   4 //
   5 // Licensed under the MIT License (the "License"); you may not use this file except
   6 // in compliance with the License. You may obtain a copy of the License at
   7 //
   8 // http://opensource.org/licenses/MIT
   9 //
  10 // Unless required by applicable law or agreed to in writing, software distributed
  11 // under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
  12 // CONDITIONS OF ANY KIND, either express or implied. See the License for the
  13 // specific language governing permissions and limitations under the License.
  14
  15 #ifndef RAPIDJSON_OSTREAMWRAPPER_H_
  16 #define RAPIDJSON_OSTREAMWRAPPER_H_
  17
  18 #include "stream.h"
  19 #include <iosfwd>
  20
  21 #ifdef __clang__
  22 RAPIDJSON_DIAG_PUSH
  23 RAPIDJSON_DIAG_OFF(padded)
  24 #endif
  25
  26 RAPIDJSON_NAMESPACE_BEGIN
  27
  28 //! Wrapper of \c std::basic_ostream into RapidJSON's Stream concept.
  29 /*!
  30     The classes can be wrapped including but not limited to:
  31
  32     - \c std::ostringstream
  33     - \c std::stringstream
  34     - \c std::wpstringstream
  35     - \c std::wstringstream
  36     - \c std::ifstream
  37     - \c std::fstream
  38     - \c std::wofstream
  39     - \c std::wfstream
  40
  41     \tparam StreamType Class derived from \c std::basic_ostream.
  42 */
  43
  44 template <typename StreamType>
  45 class BasicOStreamWrapper {
  46 public:
  47     typedef typename StreamType::char_type Ch;
  48     BasicOStreamWrapper(StreamType& stream) : stream_(stream) {}
  49
  50     void Put(Ch c) {
  51         stream_.put(c);
  52     }
  53
  54     void Flush() {
  55         stream_.flush();
  56     }
  57
  58     // Not implemented
  59     char Peek() const { RAPIDJSON_ASSERT(false); return 0; }
  60     char Take() { RAPIDJSON_ASSERT(false); return 0; }
  61     size_t Tell() const { RAPIDJSON_ASSERT(false); return 0; }
  62     char* PutBegin() { RAPIDJSON_ASSERT(false); return 0; }
  63     size_t PutEnd(char*) { RAPIDJSON_ASSERT(false); return 0; }
  64
  65 private:
  66     BasicOStreamWrapper(const BasicOStreamWrapper&);
  67     BasicOStreamWrapper& operator=(const BasicOStreamWrapper&);
  68
  69     StreamType& stream_;
  70 };
  71
  72 typedef BasicOStreamWrapper<std::ostream> OStreamWrapper;
  73 typedef BasicOStreamWrapper<std::wostream> WOStreamWrapper;
  74
  75 #ifdef __clang__
  76 RAPIDJSON_DIAG_POP
  77 #endif
  78
  79 RAPIDJSON_NAMESPACE_END
  80
  81 #endif // RAPIDJSON_OSTREAMWRAPPER_H_