DCHECK(args.length() == 1);
Debug* debug = isolate->debug();
if (!debug->IsStepping()) return isolate->heap()->undefined_value();
- CONVERT_ARG_HANDLE_CHECKED(JSFunction, callback, 0);
+
HandleScope scope(isolate);
- // When leaving the callback, step out has been activated, but not performed
- // if we do not leave the builtin. To be able to step into the callback
+ CONVERT_ARG_HANDLE_CHECKED(Object, object, 0);
+ RUNTIME_ASSERT(object->IsJSFunction() || object->IsJSGeneratorObject());
+ Handle<JSFunction> fun;
+ if (object->IsJSFunction()) {
+ fun = Handle<JSFunction>::cast(object);
+ } else {
+ fun = Handle<JSFunction>(
+ Handle<JSGeneratorObject>::cast(object)->function(), isolate);
+ }
+ // When leaving the function, step out has been activated, but not performed
+ // if we do not leave the builtin. To be able to step into the function
// again, we need to clear the step out at this point.
debug->ClearStepOut();
- debug->FloodWithOneShot(callback);
+ debug->FloodWithOneShot(fun);
return isolate->heap()->undefined_value();
}
--- /dev/null
+// Copyright 2014 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --expose-debug-as debug
+
+Debug = debug.Debug
+var exception = null;
+var yields = 0;
+
+function listener(event, exec_state, event_data, data) {
+ if (event != Debug.DebugEvent.Break) return;
+ try {
+ var source = exec_state.frame(0).sourceLineText();
+ print(source);
+ if (/stop stepping/.test(source)) return;
+ if (/yield/.test(source)) yields++;
+ exec_state.prepareStep(Debug.StepAction.StepIn, 1);
+ } catch (e) {
+ print(e, e.stack);
+ exception = e;
+ }
+};
+
+Debug.setListener(listener);
+
+function* g() {
+ for (var i = 0; i < 3; ++i) {
+ yield i;
+ }
+}
+
+var i = g();
+debugger;
+for (var num of g()) {}
+i.next();
+
+print(); // stop stepping
+
+// Not stepped into.
+i.next();
+i.next();
+
+assertNull(exception);
+assertEquals(4, yields);