回档之后的重写。部分问题修复。添加了什么我也忘了

src/VirtualMachine/VirtualMachine.hpp

@@ -0,0 +1,75 @@
+#pragma once
+
+#include <Evaluator/Value/value.hpp>
+#include <Bytecode/CallFrame.hpp>
+
+#include <vector>
+
+namespace Fig
+{
+    class VirtualMachine
+    {
+    private:
+        std::vector<CallFrame> frames;
+        CallFrame *currentFrame;
+
+        std::vector<Object> stack;
+        Object *stack_top;
+
+    public:
+        void Clean()
+        {
+            frames.clear();
+            stack.clear();
+
+            currentFrame = nullptr;
+            stack_top = nullptr;
+        }
+
+        void addFrame(const CallFrame &_frame)
+        {
+            frames.push_back(_frame);
+            currentFrame = &frames.back();
+        }
+
+        CallFrame popFrame()
+        {
+            assert((!frames.empty()) && "frames is empty!");
+
+            CallFrame back = *currentFrame;
+            frames.pop_back();
+            currentFrame = (frames.empty() ? nullptr : &frames.back());
+
+            return back;
+        }
+
+        void push(const Object &_object)
+        {
+            stack.push_back(_object);
+            stack_top = &stack.back();
+        }
+
+        void nextIns(CallFrame &frame) const
+        {
+            frame.ip += 1;
+        }
+
+        Object pop()
+        {
+            assert((!stack.empty()) && "stack is empty!");
+
+            Object back = *stack_top;
+            stack.pop_back();
+            stack_top = (stack.empty() ? nullptr : &stack.back());
+
+            return back;
+        }
+
+        VirtualMachine(const CallFrame &_frame) 
+        {
+            addFrame(_frame);
+        }
+
+        Object Execute();
+    };
+};