remove `VM::top_frame`

include/pocketpy/vm.h

@@ -168,10 +168,6 @@ public:
     void set_main_argv(int argc, char** argv);
     void __breakpoint();
 
-    Frame* top_frame(){
-        return &callstack.top();
-    }
-
     void __pop_frame(){
         s_data.reset(callstack.top()._sp_base);
         callstack.pop();

src/ceval.cpp

@@ -81,7 +81,7 @@ bool VM::py_ge(PyObject* _0, PyObject* _1){
 #undef BINARY_F_COMPARE
 
 PyObject* VM::__run_top_frame(){
-    Frame* frame = top_frame();
+    Frame* frame = &callstack.top();
     const Frame* base_frame = frame;
     bool need_raise = false;
 
@@ -667,7 +667,7 @@ __NEXT_STEP:;
             true
         );
         if(_0 == PY_OP_CALL){
-            frame = top_frame();
+            frame = &callstack.top();
             goto __NEXT_FRAME;
         }
         PUSH(_0);
@@ -702,7 +702,7 @@ __NEXT_STEP:;
             );
         }
         if(_0 == PY_OP_CALL){
-            frame = top_frame();
+            frame = &callstack.top();
             goto __NEXT_FRAME;
         }
         PUSH(_0);
@@ -713,7 +713,7 @@ __NEXT_STEP:;
         if(frame == base_frame){       // [ frameBase<- ]
             return _0;
         }else{
-            frame = top_frame();
+            frame = &callstack.top();
             PUSH(_0);
             goto __NEXT_FRAME;
         }
@@ -983,7 +983,7 @@ __NEXT_STEP:;
             bool is_base_frame_to_be_popped = frame == base_frame;
             __pop_frame();
             if(callstack.empty()) throw _e;   // propagate to the top level
-            frame = top_frame();
+            frame = &callstack.top();
             PUSH(e_obj);
             if(is_base_frame_to_be_popped) throw ToBeRaisedException();
             need_raise = true;

src/modules.cpp

@@ -100,7 +100,7 @@ void add_module_json(VM* vm){
             sv = CAST(Str&, args[0]).sv();
         }
         CodeObject_ code = vm->compile(sv, "<json>", JSON_MODE);
-        return vm->_exec(code, vm->top_frame()->_module);
+        return vm->_exec(code, vm->callstack.top()._module);
     });
 
     vm->bind_func<1>(mod, "dumps", [](VM* vm, ArgsView args) {

src/pocketpy.cpp

@@ -74,7 +74,7 @@ void init_builtins(VM* _vm) {
     // builtin functions
     _vm->bind_func<0>(_vm->builtins, "breakpoint", [](VM* vm, ArgsView args) {
 #if PK_ENABLE_PROFILER
-        vm->_next_breakpoint = NextBreakpoint(vm->callstack.size(), vm->top_frame()->curr_lineno(), false);
+        vm->_next_breakpoint = NextBreakpoint(vm->callstack.size(), vm->callstack.top().curr_lineno(), false);
 #endif
         return vm->None;
     });
@@ -86,7 +86,7 @@ void init_builtins(VM* _vm) {
             class_arg = args[0];
             self_arg = args[1];
         }else if(args.size() == 0){
-            Frame* frame = vm->top_frame();
+            Frame* frame = &vm->callstack.top();
             if(frame->_callable != nullptr){
                 class_arg = PK_OBJ_GET(Function, frame->_callable)._class;
                 if(frame->_locals.size() > 0) self_arg = frame->_locals[0];
@@ -140,7 +140,7 @@ void init_builtins(VM* _vm) {
     });
 
     _vm->bind_func<0>(_vm->builtins, "globals", [](VM* vm, ArgsView args) {
-        PyObject* mod = vm->top_frame()->_module;
+        PyObject* mod = vm->callstack.top()._module;
         return VAR(MappingProxy(mod));
     });
 
@@ -201,7 +201,7 @@ void init_builtins(VM* _vm) {
         CodeObject_ code = vm->compile(CAST(Str&, args[0]), "<eval>", EVAL_MODE, true);
         PyObject* globals = args[1];
         if(globals == vm->None){
-            Frame* frame = vm->top_frame();
+            Frame* frame = &vm->callstack.top();
             return vm->_exec(code.get(), frame->_module, frame->_callable, frame->_locals);
         }
         vm->check_type(globals, VM::tp_mappingproxy);
@@ -213,7 +213,7 @@ void init_builtins(VM* _vm) {
         CodeObject_ code = vm->compile(CAST(Str&, args[0]), "<exec>", EXEC_MODE, true);
         PyObject* globals = args[1];
         if(globals == vm->None){
-            Frame* frame = vm->top_frame();
+            Frame* frame = &vm->callstack.top();
             vm->_exec(code.get(), frame->_module, frame->_callable, frame->_locals);
             return vm->None;
         }

src/vm.cpp

@@ -694,7 +694,7 @@ void VM::_log_s_data(const char* title) {
         if(f._sp_base == nullptr) PK_FATAL_ERROR();
         sp_bases[f._sp_base] += 1;
     }
-    Frame* frame = top_frame();
+    Frame* frame = &callstack.top();
     int line = frame->co->lines[frame->_ip];
     ss << frame->co->name << ":" << line << " [";
     for(PyObject** p=s_data.begin(); p!=s_data.end(); p++){
@@ -1298,7 +1298,7 @@ void VM::_error(PyObject* e_obj){
 }
 
 void VM::__raise(bool re_raise){
-    Frame* frame = top_frame();
+    Frame* frame = &callstack.top();
     Exception& e = PK_OBJ_GET(Exception, s_data.top());
     if(!re_raise){
         e._ip_on_error = frame->_ip;
@@ -1497,7 +1497,7 @@ void NativeFunc::check_size(VM* vm, ArgsView args) const{
 #if PK_ENABLE_PROFILER
 void NextBreakpoint::_step(VM* vm){
     int curr_callstack_size = vm->callstack.size();
-    int curr_lineno = vm->top_frame()->curr_lineno();
+    int curr_lineno = vm->callstack.top().curr_lineno();
     if(should_step_into){
         if(curr_callstack_size != callstack_size || curr_lineno != lineno){
             vm->__breakpoint();