src/cpp-common/uuid-view.hpp

   1 /*
   2  * Copyright (c) 2020 Philippe Proulx <pproulx@efficios.com>
   3  *
   4  * SPDX-License-Identifier: MIT
   5  */
   6
   7 #ifndef BABELTRACE_CPP_COMMON_UUID_VIEW_HPP
   8 #define BABELTRACE_CPP_COMMON_UUID_VIEW_HPP
   9
  10 #include <cstdint>
  11
  12 #include "common/assert.h"
  13 #include "common/uuid.h"
  14
  15 namespace bt2_common {
  16
  17 class UuidView
  18 {
  19 public:
  20     explicit UuidView(const std::uint8_t * const uuid) noexcept : _mUuid {uuid}
  21     {
  22         BT_ASSERT_DBG(uuid);
  23     }
  24
  25     UuidView(const UuidView&) noexcept = default;
  26     UuidView& operator=(const UuidView&) noexcept = default;
  27
  28     bool operator==(const UuidView& other) const noexcept
  29     {
  30         return bt_uuid_compare(_mUuid, other._mUuid) == 0;
  31     }
  32
  33     bool operator!=(const UuidView& other) const noexcept
  34     {
  35         return !(*this == other);
  36     }
  37
  38     std::string string() const
  39     {
  40         std::array<char, BT_UUID_STR_LEN> buf;
  41
  42         bt_uuid_to_str(_mUuid, buf.data());
  43         return {buf.data(), buf.size()};
  44     }
  45
  46     static std::size_t size() noexcept
  47     {
  48         return BT_UUID_LEN;
  49     }
  50
  51     const std::uint8_t *data() const noexcept
  52     {
  53         return _mUuid;
  54     }
  55
  56 private:
  57     const std::uint8_t *_mUuid;
  58 };
  59
  60 } // namespace bt2_common
  61
  62 #endif // BABELTRACE_CPP_COMMON_UUID_VIEW_HPP