From e66286ebe30afc9acc4531fc2bea29b7fb924f93 Mon Sep 17 00:00:00 2001
From: rtk0c <mail.tianyig@gmail.com>
Date: Mon, 30 May 2022 17:03:20 -0700
Subject: Changeset: 56 Buildsystem cleanup: change to layered structure for
 different targets

---
 source/10-common/LookupTable.hpp | 53 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 53 insertions(+)
 create mode 100644 source/10-common/LookupTable.hpp

(limited to 'source/10-common/LookupTable.hpp')

diff --git a/source/10-common/LookupTable.hpp b/source/10-common/LookupTable.hpp
new file mode 100644
index 0000000..c50e28e
--- /dev/null
+++ b/source/10-common/LookupTable.hpp
@@ -0,0 +1,53 @@
+#pragma once
+
+#include <robin_hood.h>
+#include <string_view>
+
+// BIDI stands for bi-directional
+#define BIDI_LUT_DECL(name, aType, aCount, bType, bCount) \
+	int gLut_##name##_A2B[aCount];                        \
+	int gLut_##name##_B2A[bCount];                        \
+	using name##AType = aType;                            \
+	using name##BType = bType;                            \
+	void InitializeLut##name()
+#define BIDI_LUT_MAP_FOR(name)              \
+	int* lutMappingA2B = gLut_##name##_A2B; \
+	int* lutMappingB2A = gLut_##name##_B2A
+#define BIDI_LUT_MAP(from, to) \
+	lutMappingA2B[from] = to;  \
+	lutMappingB2A[to] = from
+#define BIDI_LUT_INIT(name) InitializeLut##name()
+#define BIDI_LUT_A2B_LOOKUP(name, from) (name##BType)(gLut_##name##_A2B[from])
+#define BIDI_LUT_B2A_LOOKUP(name, to) (name##AType)(gLut_##name##_B2A[to])
+
+#define STR_LUT_DECL(name, enumMinValue, enumMaxValue)              \
+	constexpr int kLutMinVal_##name = enumMinValue;                 \
+	const char* gLut_##name[(int)enumMaxValue - (int)enumMinValue]; \
+	void InitializeLut##name()
+#define STR_LUT_MAP_FOR(name)              \
+	const char** lutMapping = gLut_##name; \
+	int lutMappingMinValue = kLutMinVal_##name
+#define STR_LUT_MAP(value, text) lutMapping[value - lutMappingMinValue] = text
+#define STR_LUT_MAP_ENUM(enumValue) STR_LUT_MAP(enumValue, #enumValue)
+#define STR_LUT_LOOKUP(name, enumValue) gLut_##name[enumValue - kLutMinVal_##name]
+#define STR_LUT_INIT(name) InitializeLut##name()
+
+// BSTR stands for bi-directional string
+#define BSTR_LUT_DECL(name, enumMinValue, enumMaxValue)                                         \
+	constexpr int kLutMinVal_##name = enumMinValue;                                             \
+	const char* gLut_##name##_V2S[(int)enumMaxValue - (int)enumMinValue];                       \
+	robin_hood::unordered_flat_map<std::string_view, decltype(enumMaxValue)> gLut_##name##_S2V; \
+	void InitializeLut##name()
+#define BSTR_LUT_MAP_FOR(name)                      \
+	const char** lutMappingV2S = gLut_##name##_V2S; \
+	auto& lutMappingS2V = gLut_##name##_S2V;        \
+	int lutMappingMinValue = kLutMinVal_##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) gLut_##name##_V2S
+#define BSTR_LUT_S2V(name) gLut_##name##_S2V
+#define BSTR_LUT_V2S_LOOKUP(name, enumValue) gLut_##name##_V2S[enumValue - kLutMinVal_##name]
+#define BSTR_LUT_S2V_LOOKUP(name, string) gLut_##name##_S2V.find(std::string_view(text))
+#define BSTR_LUT_INIT(name) InitializeLut##name()
-- 
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