[inspector] introduced debug::GeneratorObject

src/api.cc

Index: src/api.cc
diff --git a/src/api.cc b/src/api.cc
index 8c878b178a19ffe66b5d54428af94f7bbce5b796..07b967f2b8cf3bf37e093d1e3724b142d50663ad 100644
--- a/src/api.cc
+++ b/src/api.cc
@@ -9290,7 +9290,9 @@ debug::Location::Location(int line_number, int column_number)
   CHECK(column_number >= 0);
 }
 
-debug::Location::Location() : line_number_(-1), column_number_(-1) {}
+debug::Location::Location()
+    : line_number_(v8::Function::kLineOffsetNotFound),
+      column_number_(v8::Function::kLineOffsetNotFound) {}
 
 int debug::Location::GetLineNumber() const {
   CHECK(line_number_ >= 0);
@@ -9414,6 +9416,41 @@ v8::MaybeLocal<v8::Array> debug::EntriesPreview(Isolate* v8_isolate,
   return v8::MaybeLocal<v8::Array>();
 }
 
+MaybeLocal<debug::Script> debug::GeneratorObject::Script() {
+  i::Handle<i::JSGeneratorObject> obj = Utils::OpenHandle(this);
+  i::Object* maybe_script = obj->function()->shared()->script();
+  if (!maybe_script->IsScript()) return MaybeLocal<debug::Script>();
+  i::Handle<i::Script> script(i::Script::cast(maybe_script), obj->GetIsolate());
+  return ToApiHandle<debug::Script>(script);
+}
+
+Local<Function> debug::GeneratorObject::Function() {
+  i::Handle<i::JSGeneratorObject> obj = Utils::OpenHandle(this);
+  return Utils::ToLocal(handle(obj->function()));
+}
+
+debug::Location debug::GeneratorObject::SuspendedLocation() {
+  i::Handle<i::JSGeneratorObject> obj = Utils::OpenHandle(this);
+  CHECK(obj->is_suspended());
+  i::Object* maybe_script = obj->function()->shared()->script();
+  if (!maybe_script->IsScript()) return debug::Location();
+  i::Handle<i::Script> script(i::Script::cast(maybe_script), obj->GetIsolate());
+  i::Script::PositionInfo info;
+  i::Script::GetPositionInfo(script, obj->source_position(), &info,
+                             i::Script::WITH_OFFSET);
+  return debug::Location(info.line, info.column);
+}
+
+bool debug::GeneratorObject::IsSuspended() {
+  return Utils::OpenHandle(this)->is_suspended();
+}
+
+v8::Local<debug::GeneratorObject> debug::GeneratorObject::Cast(
+    v8::Local<v8::Value> value) {
+  CHECK(value->IsGeneratorObject());
+  return ToApiHandle<debug::GeneratorObject>(Utils::OpenHandle(*value));
+}
+
 Local<String> CpuProfileNode::GetFunctionName() const {
   const i::ProfileNode* node = reinterpret_cast<const i::ProfileNode*>(this);
   i::Isolate* isolate = node->isolate();