[VER] 0.3.7-alpha

[Fix] 修复科学表达式数字解析的问题（Lexer引起） 由 Satklomi发现，感谢
[Feat] 增加Compiler相关定义，将开发BytecodeVM
[Tip] Evaluator进入Bug fix阶段，新功能延缓开发。转向VM

src/Bytecode/Bytecode.hpp

@@ -0,0 +1,125 @@
+#pragma once
+
+/*
+
+从树遍历到虚拟机!
+
+*/
+
+#include "Core/fig_string.hpp"
+#include "Utils/magic_enum/magic_enum.hpp"
+#include <cstdint>
+#include <format>
+#include <string_view>
+
+namespace Fig
+{
+    using OpCodeType = uint8_t;
+    enum class Bytecode : OpCodeType
+    {
+        HALT = 0x01, // 程序终止，后跟 8 位退出码
+
+        POP = 0x10,
+
+        LOAD_NULL = 0x20,
+        LOAD_TRUE = 0x21,
+        LOAD_FALSE = 0x22,
+        LOAD_CON8 = 0x23,  // 跟 8  位索引 (0     - 255)
+        LOAD_CON16 = 0x24, // 跟 16 位索引 (255   - 65535)
+        LOAD_CON32 = 0x25, // 跟 32 位索引 (65536 - 2^32-1)
+
+        ADD = 0x30, // +
+        SUB = 0x31, // -
+        MUL = 0x32, // *
+        DIV = 0x33, // /
+        MOD = 0x34, // %
+
+        AND = 0x40, // &
+        OR = 0x41,  // |
+        XOR = 0x42, // ~
+        NOT = 0x43, // ! (not)
+
+        EQ = 0x50,   // ==
+        GT = 0x51,   // >
+        GTEQ = 0x52, // >=
+        LT = 0x53,   // <
+        LTEQ = 0x54, // <=
+
+        JUMP16 = 0x60, // 跟 16 位索引 无条件
+        JUMP32 = 0x61, // 跟 32 位索引 无条件
+
+        JUMP16_IF_TRUE = 0x62, // 跟 16 位索引 栈顶为真跳转
+        JUMP32_IF_TRUE = 0x63, // 跟 32 位索引 栈顶为真跳转
+
+        JUMP16_IF_FALSE = 0x64, // 跟 16 位索引 栈顶为假跳转
+        JUMP32_IF_FALSE = 0x65, // 跟 32 位索引 栈顶为假跳转
+
+        LOAD_LOCAL16 = 0x70, // 后跟 16 位索引
+        LOAD_LOCAL32 = 0x71, // 后跟 32 位索引
+    };
+
+    inline FString bytecode2string(Bytecode code)
+    {
+        const std::string_view &name = magic_enum::enum_name(code);
+        return FString(FStringView(name));
+    }
+
+    inline FString reverseCompile(const std::vector<uint8_t> &src)
+    {
+        assert(src.size() >= 1);
+
+        FString result;
+
+        using enum Bytecode;
+        for (size_t i = 0; i < src.size();)
+        {
+            Bytecode code = Bytecode(src[i]);
+            switch (code)
+            {
+                case HALT: {
+                    uint8_t quitCode = src[++i];
+                    result += FString(std::format("HALT {}", static_cast<uint8_t>(quitCode))) + u8"\n";
+                    break;
+                }
+                case LOAD_CON8: {
+                    uint8_t id = src[++i];
+                    result += FString(std::format("LOAD_CON8 {}", static_cast<uint8_t>(id))) + u8"\n";
+                    break;
+                }
+                case LOAD_CON16:
+                case JUMP16:
+                case JUMP16_IF_TRUE:
+                case JUMP16_IF_FALSE:
+                case LOAD_LOCAL16: {
+                    uint8_t high = src[++i];
+                    uint8_t low = src[++i];
+                    int32_t id = (high << 8) | low;
+                    result += FString(std::format("{} {}", bytecode2string(code).toBasicString(), id))
+                              + u8"\n";
+                    break;
+                }
+
+                case LOAD_CON32:
+                case JUMP32:
+                case JUMP32_IF_TRUE:
+                case JUMP32_IF_FALSE:
+                case LOAD_LOCAL32: {
+                    uint32_t b0 = static_cast<uint32_t>(src[++i]);
+                    uint32_t b1 = static_cast<uint32_t>(src[++i]);
+                    uint32_t b2 = static_cast<uint32_t>(src[++i]);
+                    uint32_t b3 = static_cast<uint32_t>(src[++i]);
+
+                    uint32_t id = (b0 << 24) | (b1 << 16) | (b2 << 8) | b3;
+                    result += FString(std::format("{} {}", bytecode2string(code).toBasicString(), id))
+                              + u8"\n";
+                    break;
+                }
+                default: {
+                    result += bytecode2string(code) + u8"\n";
+                }
+            }
+            ++i;
+        }
+        return result;
+    }
+}; // namespace Fig