66 lines
2.8 KiB
C++
66 lines
2.8 KiB
C++
/***
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Copyright (C) 2021 J Reece Wilson (a/k/a "Reece"). All rights reserved.
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File: AuroraEnum.hpp
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Date: 2021-10-28
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Author: Reece
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***/
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#pragma once
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#if defined(AUE_OUT_OF_ECOSYSTEM)
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#if !defined(AU_AuHashMap)
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#define AU_AuHashMap
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template<typename T, typename Z>
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using AuHashMap = std::unordered_map<T, Z>;
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#endif
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#if !defined(AU_AuString)
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#define AU_AuString
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using AuString = std::string;
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#endif
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#endif
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///////////////////////////////////////////////////////////////////////////////////////////
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/// Utilities
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///////////////////////////////////////////////////////////////////////////////////////////
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/// @hideinitializer
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#define AUE_BRACKET_SCOPE(...) __VA_ARGS__
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/// @hideinitializer
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#define AUE_STRIP_BRACKETS_(X) X
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/// @hideinitializer
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#define AUE_STRIP_BRACKETS(X) AUE_STRIP_BRACKETS_(AUE_BRACKET_SCOPE X)
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/// @hideinitializer
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#define AUE_EMIT_ARRAY(val) val,
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/// @hideinitializer
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#define AUE_EMIT_A(val) #val
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/// @hideinitializer
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#define AUE_EMIT_B(val) , #val
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/// @hideinitializer
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#define AUE_EMIT_PAIRNAME(name, val) {#val, name::val},
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/// @hideinitializer
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#define AUE_EMIT_CALL(name, val) consumer(name::val);
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/// @hideinitializer
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#define AUE_EMIT_CHECK(name, val) if (codename == #val) {return name::val;}
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///////////////////////////////////////////////////////////////////////////////////////////
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// API
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///////////////////////////////////////////////////////////////////////////////////////////
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#define AUE_DEFINE(name, vals) enum class name { AU_FOR_EACH(AUE_EMIT_ARRAY, AUE_STRIP_BRACKETS(vals)) kEnumCount }; \
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static inline const AuString k ## name ## ToString[static_cast<int>(name::kEnumCount)] = {AU_FOR_EACH_FIRST(AUE_EMIT_A, AUE_EMIT_B, AUE_STRIP_BRACKETS(vals)) }; \
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inline const AuHashMap<AuString, name> kName ## FromString = { AU_FOR_EACH_THAT(AUE_EMIT_PAIRNAME, name, AUE_STRIP_BRACKETS(vals)) {"kEnumCount", name::kEnumCount} }; \
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static inline name name ## FromString (const AuString &codename) { AU_FOR_EACH_THAT(AUE_EMIT_CHECK, name, AUE_STRIP_BRACKETS(vals)) return name::kEnumCount; } \
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static inline name name ## FromHashString(const AuString &codename) { auto itr = kName ## FromString.find(codename); if (itr == kName ## FromString.end()) return name::kEnumCount; return itr->second; } \
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static inline const AuString & name ## ToString(name val) { static const AuString invalid = "kEnumCount"; if (static_cast<AuUInt>(val) >= static_cast<int>(name::kEnumCount)) return invalid; return k ## name ## ToString[static_cast<int>(val)]; } \
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static inline void name ## ForEach(const AuConsumer<name> &consumer) { AU_FOR_EACH_THAT(AUE_EMIT_CALL, name, AUE_STRIP_BRACKETS(vals)) } |