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#pragma once |
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#include <string> |
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#include <optional> |
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#include <array> |
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#include "base/ints.h" |
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#include "assert/assert.h" |
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namespace eu |
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{ |
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/// Represents a universally unique identifier. |
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struct Guid |
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{ |
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std::array<u8, 16> data; |
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/// Does nothing. |
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/// @see \ref eu::nil_guid |
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Guid() = default; |
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/// Set the guid data. |
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constexpr explicit Guid(std::array<u8, 16> d) |
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: data(std::move(d)) |
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{ |
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} |
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constexpr explicit Guid(u32 a, u16 b, u16 c, u16 d, u64 e) |
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: data{{ |
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// a |
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static_cast<u8>((a >> 24) & 0xFF), |
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static_cast<u8>((a >> 16) & 0xFF), |
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static_cast<u8>((a >> 8) & 0xFF), |
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static_cast<u8>(a & 0xFF), |
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// b |
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static_cast<u8>((b >> 8) & 0xFF), |
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static_cast<u8>(b & 0xFF), |
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// c |
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static_cast<u8>((c >> 8) & 0xFF), |
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static_cast<u8>(c & 0xFF), |
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// d |
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static_cast<u8>((d >> 8) & 0xFF), |
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static_cast<u8>(d & 0xFF), |
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// e |
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static_cast<u8>((e >> 40) & 0xFF), |
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static_cast<u8>((e >> 32) & 0xFF), |
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static_cast<u8>((e >> 24) & 0xFF), |
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static_cast<u8>((e >> 16) & 0xFF), |
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static_cast<u8>((e >> 8) & 0xFF), |
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static_cast<u8>(e & 0xFF), |
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}} |
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{ |
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ASSERT((e >> 48) == 0); |
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} |
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[[nodiscard]] static std::optional<Guid> generate(); |
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}; |
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bool operator==(const Guid& lhs, const Guid& rhs); |
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bool operator!=(const Guid& lhs, const Guid& rhs); |
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/// Parse a guid from a string |
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[[nodiscard]] std::optional<Guid> guid_from(const std::string& str); |
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/// Convert a guid to a string representation, prefer fmt. |
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[[nodiscard]] std::string string_from(const Guid& g); |
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/// A nil guid, all bits are set to 0. |
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constexpr Guid nil_guid = Guid |
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{ |
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std::array<u8, 16> |
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{ |
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0, 0, 0, 0, |
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0, 0, |
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0, 0, |
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0, 0, |
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0, 0, 0, 0, 0, 0 |
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} |
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}; |
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// todo(Gustav): add std::map and std::unoredered map support |
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ADD_CATCH_FORMATTER_DEF(Guid) |
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} |
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ADD_DEFAULT_FORMATTER(eu::Guid, std::string, eu::string_from); |
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