1 files changed, 64 insertions, 0 deletions
diff --git a/source/10-common/LookupTable.hpp b/source/10-common/LookupTable.hpp
new file mode 100644
index 0000000..54548f2
--- /dev/null
+++ b/source/10-common/LookupTable.hpp
@@ -0,0 +1,64 @@
+#pragma once
+
+#include <robin_hood.h>
+#include <string_view>
+
+// BIDI stands for bi-directional
+#define BIDI_LUT_DECL(name, aType, aCount, bType, bCount) \
+	int gLutBidi_##name##_A2B[aCount];                    \
+	int gLutBidi_##name##_B2A[bCount];                    \
+	using name##AType = aType;                            \
+	using name##BType = bType;                            \
+	void InitializeLutBidi##name()
+#define BIDI_LUT_MAP_FOR(name)                  \
+	int* lutMappingA2B = gLutBidi_##name##_A2B; \
+	int* lutMappingB2A = gLutBidi_##name##_B2A
+#define BIDI_LUT_MAP(from, to) \
+	lutMappingA2B[from] = to;  \
+	lutMappingB2A[to] = from
+#define BIDI_LUT_INIT(name) InitializeLutBidi##name()
+#define BIDI_LUT_A2B_LOOKUP(name, from) (name##BType)(gLutBidi_##name##_A2B[from])
+#define BIDI_LUT_B2A_LOOKUP(name, to) (name##AType)(gLutBidi_##name##_B2A[to])
+
+// Forward string lookup
+#define FSTR_LUT_DECL(name, enumMinValue, enumMaxValue)               \
+	constexpr int kLutFwMinVal_##name = enumMinValue;                 \
+	const char* gLutFw_##name[(int)enumMaxValue - (int)enumMinValue]; \
+	void InitializeLutFw##name()
+#define FSTR_LUT_MAP_FOR(name)               \
+	const char** lutMapping = gLutFw_##name; \
+	int lutMappingMinValue = kLutFwMinVal_##name
+#define FSTR_LUT_MAP(value, text) lutMapping[value - lutMappingMinValue] = text
+#define FSTR_LUT_MAP_ENUM(enumValue) FSTR_LUT_MAP(enumValue, #enumValue)
+#define FSTR_LUT_LOOKUP(name, enumValue) gLutFw_##name[enumValue - kLutFwMinVal_##name]
+#define FSTR_LUT_INIT(name) InitializeLutFw##name()
+
+// RSTR stands for reverse-string lookup
+#define RSTR_LUT_DECL(name, enumMinValue, enumMaxValue)                                     \
+	robin_hood::unordered_flat_map<std::string_view, decltype(enumMaxValue)> gLutRv_##name; \
+	void InitializeLutRv##name()
+#define RSTR_LUT_MAP_FOR(name) auto& lutMapping = gLutRv_##name;
+#define RSTR_LUT_MAP(value, text) lutMapping.insert_or_assign(std::string_view(text), value);
+#define RSTR_LUT(name) gLutRv_##name
+#define BSTR_LUT_LOOKUP(name, string) gLutRv_##name.find(std::string_view(text))->second
+#define RSTR_LUT_INIT(name) InitializeLutRv##name()
+
+// BSTR stands for bi-directional string lookup
+#define BSTR_LUT_DECL(name, enumMinValue, enumMaxValue)                                             \
+	constexpr int kLutBstrMinVal_##name = enumMinValue;                                             \
+	const char* gLutBstr_##name##_V2S[(int)enumMaxValue - (int)enumMinValue];                       \
+	robin_hood::unordered_flat_map<std::string_view, decltype(enumMaxValue)> gLutBstr_##name##_S2V; \
+	void InitializeLutBstr##name()
+#define BSTR_LUT_MAP_FOR(name)                          \
+	const char** lutMappingV2S = gLutBstr_##name##_V2S; \
+	auto& lutMappingS2V = gLutBstr_##name##_S2V;        \
+	int lutMappingMinValue = kLutBstrMinVal_##name
+#define BSTR_LUT_MAP(value, text)                     \
+	lutMappingV2S[value - lutMappingMinValue] = text; \
+	lutMappingS2V.insert_or_assign(std::string_view(text), value);
+#define BSTR_LUT_MAP_ENUM(enumValue) BSTR_LUT_MAP(enumValue, #enumValue)
+#define BSTR_LUT_V2S(name) gLutBstr_##name##_V2S
+#define BSTR_LUT_S2V(name) gLutBstr_##name##_S2V
+#define BSTR_LUT_V2S_LOOKUP(name, enumValue) gLutBstr_##name##_V2S[enumValue - kLutBstrMinVal_##name]
+#define BSTR_LUT_S2V_LOOKUP(name, string) gLutBstr_##name##_S2V.find(std::string_view(text))->second
+#define BSTR_LUT_INIT(name) InitializeLutBstr##name()