StrongId.ixx File

Strongly-typed identifier template. More...

Included Headers

#include <cstdint> #include <string_view> #include <helios.ecs.types.TypeDefs> #include <helios.ecs.types.FuncDefs>

Namespaces Index

namespace	helios
namespace	ecs
namespace	types

Classes Index

struct	StrongId<Tag>
	A strongly-typed identifier using tag-based type safety. More...
struct	hash<helios::ecs::types::StrongId< Tag >>

Description

Strongly-typed identifier template.

File Listing

The file content with the documentation metadata removed is:

1

5module;

6

7#include <cstdint>

8#include <string_view>

9

10export module helios.ecs.types.StrongId;

11

12import helios.ecs.types.FuncDefs;

13import helios.ecs.types.TypeDefs;

14

15export namespace helios::ecs::types {

16

26 template<typename Tag>

27 struct StrongId {

28

29 private:

30

34 StrongId_t id_{};

35

36 public:

37

45 explicit constexpr StrongId(const std::string_view str) noexcept

46 : StrongId(fnv1a_hash(str)) {}

47

48

54 explicit constexpr StrongId(const StrongId_t id) noexcept

55 : id_(id) {

56 }

57

63 explicit constexpr StrongId(no_init_t) {}

64

68 constexpr StrongId() noexcept = default;

69

75 [[nodiscard]] bool isValid() const noexcept {

76 return id_ != 0;

77 }

78

84 [[nodiscard]] StrongId_t value() const noexcept {

85 return id_;

86 }

87

93 [[nodiscard]] explicit operator bool() const noexcept {

94 return id_ != 0;

95 }

96

100 friend constexpr bool operator==(StrongId, StrongId) noexcept = default;

101

109 constexpr bool operator<(const StrongId& other) const noexcept {

110 return id_ < other.id_;

111 }

112

120 constexpr bool operator>(const StrongId& other) const noexcept {

121 return id_ > other.id_;

122 }

123

124 };

125

126}

127

128

129template<typename Tag>

130struct std::hash<helios::ecs::types::StrongId<Tag>> {

131 helios::ecs::types::StrongId_t operator()(const helios::ecs::types::StrongId<Tag>& id) const noexcept {

132 return id.value();

133 }

134

135};

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