src/cpp-common/bt2/raw-value-proxy.hpp

   1 /*
   2  * Copyright (c) 2023 Philippe Proulx <pproulx@efficios.com>
   3  *
   4  * SPDX-License-Identifier: MIT
   5  */
   6
   7 #ifndef BABELTRACE_CPP_COMMON_BT2_RAW_VALUE_PROXY_HPP
   8 #define BABELTRACE_CPP_COMMON_BT2_RAW_VALUE_PROXY_HPP
   9
  10 #include <string>
  11
  12 #include "cpp-common/bt2c/c-string-view.hpp"
  13
  14 namespace bt2 {
  15
  16 template <typename ObjT>
  17 class RawValueProxy
  18 {
  19 private:
  20     using _RawVal = typename ObjT::Value;
  21
  22 public:
  23     explicit RawValueProxy(const ObjT obj) : _mObj {obj}
  24     {
  25     }
  26
  27     RawValueProxy& operator=(const _RawVal& rawVal)
  28     {
  29         _mObj.value(rawVal);
  30         return *this;
  31     }
  32
  33     operator _RawVal() const noexcept
  34     {
  35         return _mObj.value();
  36     }
  37
  38 private:
  39     ObjT _mObj;
  40 };
  41
  42 template <typename ObjT>
  43 class RawStringValueProxy final : public RawValueProxy<ObjT>
  44 {
  45 public:
  46     explicit RawStringValueProxy(const ObjT obj) : RawValueProxy<ObjT> {obj}
  47     {
  48     }
  49
  50     RawStringValueProxy& operator=(const char * const rawVal)
  51     {
  52         RawValueProxy<ObjT>::operator=(bt2c::CStringView {rawVal});
  53         return *this;
  54     }
  55
  56     RawStringValueProxy& operator=(const std::string& rawVal)
  57     {
  58         RawValueProxy<ObjT>::operator=(bt2c::CStringView {rawVal.data()});
  59         return *this;
  60     }
  61 };
  62
  63 } /* namespace bt2 */
  64
  65 #endif /* BABELTRACE_CPP_COMMON_BT2_RAW_VALUE_PROXY_HPP */