Add vm

src/state.h

@@ -4,18 +4,30 @@
 #include "lexer.h"
 #include "parser.h"
 #include "interpreter.h"
+#include "vm.h"
+#include "compiler.h"
 #include "value.h"
 #include <string>
 #include <memory>
 
 namespace camellya {
 
+// Execution mode
+enum class ExecutionMode {
+    INTERPRETER,  // Tree-walking interpreter
+    VM           // Bytecode VM
+};
+
 // Main state class - similar to lua_State
 class State {
 public:
-    State();
+    State(ExecutionMode mode = ExecutionMode::VM);
     ~State() = default;
     
+    // Set execution mode
+    void set_execution_mode(ExecutionMode mode) { execution_mode_ = mode; }
+    ExecutionMode get_execution_mode() const { return execution_mode_; }
+    
     // Execute script from string
     bool do_string(const std::string& script);
     
@@ -51,11 +63,17 @@ public:
     const std::string& get_error() const { return last_error_; }
     
 private:
+    ExecutionMode execution_mode_;
     std::unique_ptr<Interpreter> interpreter_;
+    std::unique_ptr<VM> vm_;
+    std::unique_ptr<Compiler> compiler_;
     std::vector<ValuePtr> stack_;
     std::string last_error_;
     
     ValuePtr get_stack_value(int index);
+    
+    // Helper for execution
+    bool execute_program(const Program& program);
 };
 
 } // namespace camellya