...

src/ceval.h

@@ -471,7 +471,7 @@ __NEXT_STEP:;
         TOP() = py_iter(TOP());
         DISPATCH();
     TARGET(FOR_ITER)
-        _0 = PyIterNext(TOP());
+        _0 = py_next(TOP());
         if(_0 != StopIteration){
             PUSH(_0);
         }else{
@@ -493,35 +493,39 @@ __NEXT_STEP:;
         frame->f_globals()._try_perfect_rehash();
         DISPATCH();
     /*****************************************/
-    TARGET(UNPACK_SEQUENCE)
+    TARGET(UNPACK_SEQUENCE){
+        auto _lock = heap.gc_scope_lock();  // lock the gc via RAII!!
+        _0 = py_iter(POPX());
+        for(int i=0; i<byte.arg; i++){
+            _1 = py_next(_0);
+            if(_1 == StopIteration) ValueError("not enough values to unpack");
+            PUSH(_1);
+        }
+        if(py_next(_0) != StopIteration) ValueError("too many values to unpack");
+    } DISPATCH();
     TARGET(UNPACK_EX) {
         auto _lock = heap.gc_scope_lock();  // lock the gc via RAII!!
         _0 = py_iter(POPX());
         for(int i=0; i<byte.arg; i++){
-            _1 = PyIterNext(_0);
+            _1 = py_next(_0);
             if(_1 == StopIteration) ValueError("not enough values to unpack");
             PUSH(_1);
         }
-        // handle extra items
-        if(byte.op == OP_UNPACK_EX){
-            List extras;
-            while(true){
-                _1 = PyIterNext(_0);
-                if(_1 == StopIteration) break;
-                extras.push_back(_1);
-            }
-            PUSH(VAR(extras));
-        }else{
-            if(PyIterNext(_0) != StopIteration) ValueError("too many values to unpack");
+        List extras;
+        while(true){
+            _1 = py_next(_0);
+            if(_1 == StopIteration) break;
+            extras.push_back(_1);
         }
+        PUSH(VAR(extras));
     } DISPATCH();
     TARGET(UNPACK_UNLIMITED) {
         auto _lock = heap.gc_scope_lock();  // lock the gc via RAII!!
         _0 = py_iter(POPX());
-        _1 = PyIterNext(_0);
+        _1 = py_next(_0);
         while(_1 != StopIteration){
             PUSH(_1);
-            _1 = PyIterNext(_0);
+            _1 = py_next(_0);
         }
     } DISPATCH();
     /*****************************************/

src/pocketpy.h

@@ -185,7 +185,7 @@ inline void init_builtins(VM* _vm) {
     });
 
     _vm->bind_builtin_func<1>("next", [](VM* vm, ArgsView args) {
-        return vm->PyIterNext(args[0]);
+        return vm->py_next(args[0]);
     });
 
     _vm->bind_builtin_func<1>("dir", [](VM* vm, ArgsView args) {
@@ -463,11 +463,11 @@ inline void init_builtins(VM* _vm) {
         const Str& self = _CAST(Str&, args[0]);
         FastStrStream ss;
         PyObject* it = vm->py_iter(args[1]);     // strong ref
-        PyObject* obj = vm->PyIterNext(it);
+        PyObject* obj = vm->py_next(it);
         while(obj != vm->StopIteration){
             if(!ss.empty()) ss << self;
             ss << CAST(Str&, obj);
-            obj = vm->PyIterNext(it);
+            obj = vm->py_next(it);
         }
         return VAR(ss.str());
     });
@@ -560,10 +560,10 @@ inline void init_builtins(VM* _vm) {
         auto _lock = vm->heap.gc_scope_lock();
         List& self = _CAST(List&, args[0]);
         PyObject* it = vm->py_iter(args[1]);     // strong ref
-        PyObject* obj = vm->PyIterNext(it);
+        PyObject* obj = vm->py_next(it);
         while(obj != vm->StopIteration){
             self.push_back(obj);
-            obj = vm->PyIterNext(it);
+            obj = vm->py_next(it);
         }
         return vm->None;
     });

src/vm.h

@@ -485,7 +485,7 @@ public:
         return index;
     }
 
-    PyObject* PyIterNext(PyObject* obj){
+    PyObject* py_next(PyObject* obj){
         const PyTypeInfo* ti = _inst_type_info(obj);
         if(ti->m__next__) return ti->m__next__(this, obj);
         return call_method(obj, __next__);
@@ -790,10 +790,10 @@ inline PyObject* VM::py_list(PyObject* it){
     auto _lock = heap.gc_scope_lock();
     it = py_iter(it);
     List list;
-    PyObject* obj = PyIterNext(it);
+    PyObject* obj = py_next(it);
     while(obj != StopIteration){
         list.push_back(obj);
-        obj = PyIterNext(it);
+        obj = py_next(it);
     }
     return VAR(std::move(list));
 }