[inspector] introduced debug::GeneratorObject

src/api.cc

 // Copyright 2012 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.
 
 #include "src/api.h"
 
 #include <string.h>  // For memcpy, strlen.
 #ifdef V8_USE_ADDRESS_SANITIZER
 #include <sanitizer/asan_interface.h>
 #endif  // V8_USE_ADDRESS_SANITIZER
@@ skipping 9272 matching lines @@
       i::WasmCompiledModule::cast(script->wasm_compiled_module());
   return compiled_module->DisassembleFunction(function_index);
 }
 
 debug::Location::Location(int line_number, int column_number)
     : line_number_(line_number), column_number_(column_number) {
   CHECK(line_number >= 0);
   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);
   return line_number_;
 }
 
 int debug::Location::GetColumnNumber() const {
   CHECK(column_number_ >= 0);
   return column_number_;
 }
@@ skipping 103 matching lines @@
   if (object->IsJSSetIterator()) {
     i::Handle<i::JSSetIterator> it = i::Handle<i::JSSetIterator>::cast(object);
     *is_key_value = false;
     if (!it->HasMore()) return v8::Array::New(v8_isolate);
     return Utils::ToLocal(
         SetAsArray(isolate, it->table(), i::Smi::cast(it->index())->value()));
   }
   return v8::MaybeLocal<v8::Array>();
 }
 
+MaybeLocal<debug::Script> debug::GeneratorObject::Script() {
+  i::Handle<i::JSGeneratorObject> obj = Utils::OpenHandle(this);
+  if (!obj->function()->shared()->script()->IsScript())

[jgruber, 2017/02/07 08:32:28]

Nit: I think this'd be more readable if we store
obj->function()->shared()->script() in a maybe_script variable before the check
and subsequent cast (same below). Matter of taste though, so as you like.

[kozy, 2017/02/07 17:09:45]

Done.

+    return MaybeLocal<debug::Script>();
+  i::Handle<i::Script> script(
+      i::Script::cast(obj->function()->shared()->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());
+  if (!obj->function()->shared()->script()->IsScript())
+    return debug::Location();
+  i::Handle<i::Script> script(
+      i::Script::cast(obj->function()->shared()->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();
   const i::CodeEntry* entry = node->entry();
   i::Handle<i::String> name =
       isolate->factory()->InternalizeUtf8String(entry->name());
   if (!entry->has_name_prefix()) {
     return ToApiHandle<String>(name);
   } else {
     // We do not expect this to fail. Change this if it does.
@@ skipping 672 matching lines @@
   Address callback_address =
       reinterpret_cast<Address>(reinterpret_cast<intptr_t>(callback));
   VMState<EXTERNAL> state(isolate);
   ExternalCallbackScope call_scope(isolate, callback_address);
   callback(info);
 }
 
 
 }  // namespace internal
 }  // namespace v8