Map v8::Function to JSReceiver + IsCallable

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 1962 matching lines @@
     isolate->ReportPendingMessages();
   }
   RETURN_ON_FAILED_EXECUTION(Function);
 
   i::Handle<i::Object> result;
   has_pending_exception =
       !i::Execution::Call(isolate, fun,
                           Utils::OpenHandle(*v8_context->Global()), 0,
                           nullptr).ToHandle(&result);
   RETURN_ON_FAILED_EXECUTION(Function);
-  RETURN_ESCAPED(Utils::ToLocal(i::Handle<i::JSFunction>::cast(result)));
+  RETURN_ESCAPED(
+      Utils::FunctionToLocal(i::Handle<i::JSFunction>::cast(result)));
 }
 
 
 Local<Function> ScriptCompiler::CompileFunctionInContext(
     Isolate* v8_isolate, Source* source, Local<Context> v8_context,
     size_t arguments_count, Local<String> arguments[],
     size_t context_extension_count, Local<Object> context_extensions[]) {
   RETURN_TO_LOCAL_UNCHECKED(
       CompileFunctionInContext(v8_context, source, arguments_count, arguments,
                                context_extension_count, context_extensions),
@@ skipping 697 matching lines @@
 bool Value::IsTrue() const {
   return Utils::OpenHandle(this)->IsTrue();
 }
 
 
 bool Value::IsFalse() const {
   return Utils::OpenHandle(this)->IsFalse();
 }
 
 
-bool Value::IsFunction() const {
-  return Utils::OpenHandle(this)->IsJSFunction();
-}
+bool Value::IsFunction() const { return Utils::OpenHandle(this)->IsCallable(); }
 
 
 bool Value::IsName() const {
   return Utils::OpenHandle(this)->IsName();
 }
 
 
 bool Value::FullIsString() const {
   bool result = Utils::OpenHandle(this)->IsString();
   DCHECK_EQ(result, QuickIsString());
@@ skipping 318 matching lines @@
 void v8::Object::CheckCast(Value* that) {
   i::Handle<i::Object> obj = Utils::OpenHandle(that);
   Utils::ApiCheck(obj->IsJSObject(),
                   "v8::Object::Cast()",
                   "Could not convert to object");
 }
 
 
 void v8::Function::CheckCast(Value* that) {
   i::Handle<i::Object> obj = Utils::OpenHandle(that);
-  Utils::ApiCheck(obj->IsJSFunction(),
-                  "v8::Function::Cast()",
+  Utils::ApiCheck(obj->IsCallable(), "v8::Function::Cast()",
                   "Could not convert to function");
 }
 
 
 void v8::Boolean::CheckCast(v8::Value* that) {
   i::Handle<i::Object> obj = Utils::OpenHandle(that);
   Utils::ApiCheck(obj->IsBoolean(),
                   "v8::Boolean::Cast()",
                   "Could not convert to boolean");
 }
@@ skipping 1281 matching lines @@
 
 MaybeLocal<Object> Function::NewInstance(Local<Context> context, int argc,
                                          v8::Local<v8::Value> argv[]) const {
   PREPARE_FOR_EXECUTION_WITH_CALLBACK(context, "v8::Function::NewInstance()",
                                       Object);
   i::TimerEventScope<i::TimerEventExecute> timer_scope(isolate);
   auto self = Utils::OpenHandle(this);
   STATIC_ASSERT(sizeof(v8::Local<v8::Value>) == sizeof(i::Object**));
   i::Handle<i::Object>* args = reinterpret_cast<i::Handle<i::Object>*>(argv);
   Local<Object> result;
-  has_pending_exception =
-      !ToLocal<Object>(i::Execution::New(self, argc, args), &result);
+  has_pending_exception = !ToLocal<Object>(
+      i::Execution::New(isolate, self, self, argc, args), &result);
   RETURN_ON_FAILED_EXECUTION(Object);
   RETURN_ESCAPED(result);
 }
 
 
 Local<v8::Object> Function::NewInstance(int argc,
                                         v8::Local<v8::Value> argv[]) const {
   auto context = ContextFromHeapObject(Utils::OpenHandle(this));
   RETURN_TO_LOCAL_UNCHECKED(NewInstance(context, argc, argv), Object);
 }
@@ skipping 17 matching lines @@
 
 
 Local<v8::Value> Function::Call(v8::Local<v8::Value> recv, int argc,
                                 v8::Local<v8::Value> argv[]) {
   auto context = ContextFromHeapObject(Utils::OpenHandle(this));
   RETURN_TO_LOCAL_UNCHECKED(Call(context, recv, argc, argv), Value);
 }
 
 
 void Function::SetName(v8::Local<v8::String> name) {
-  i::Handle<i::JSFunction> func = Utils::OpenHandle(this);
+  auto self = Utils::OpenHandle(this);
+  if (!self->IsJSFunction()) return;
+  auto func = i::Handle<i::JSFunction>::cast(self);
   func->shared()->set_name(*Utils::OpenHandle(*name));
 }
 
 
 Local<Value> Function::GetName() const {
-  i::Handle<i::JSFunction> func = Utils::OpenHandle(this);
+  auto self = Utils::OpenHandle(this);
+  if (!self->IsJSFunction()) {
+    return ToApiHandle<Primitive>(
+        self->GetIsolate()->factory()->undefined_value());
+  }
+  auto func = i::Handle<i::JSFunction>::cast(self);
   return Utils::ToLocal(i::Handle<i::Object>(func->shared()->name(),
                                              func->GetIsolate()));
 }
 
 
 Local<Value> Function::GetInferredName() const {
-  i::Handle<i::JSFunction> func = Utils::OpenHandle(this);
+  auto self = Utils::OpenHandle(this);
+  if (!self->IsJSFunction()) {
+    return ToApiHandle<Primitive>(
+        self->GetIsolate()->factory()->undefined_value());
+  }
+  auto func = i::Handle<i::JSFunction>::cast(self);
   return Utils::ToLocal(i::Handle<i::Object>(func->shared()->inferred_name(),
                                              func->GetIsolate()));
 }
 
 
 Local<Value> Function::GetDisplayName() const {
   i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
   ENTER_V8(isolate);
-  i::Handle<i::JSFunction> func = Utils::OpenHandle(this);
+  auto self = Utils::OpenHandle(this);
+  if (!self->IsJSFunction()) {
+    return ToApiHandle<Primitive>(isolate->factory()->undefined_value());
+  }
+  auto func = i::Handle<i::JSFunction>::cast(self);
   i::Handle<i::String> property_name =
       isolate->factory()->NewStringFromStaticChars("displayName");
   i::Handle<i::Object> value =
       i::JSReceiver::GetDataProperty(func, property_name);
   if (value->IsString()) {
     i::Handle<i::String> name = i::Handle<i::String>::cast(value);
     if (name->length() > 0) return Utils::ToLocal(name);
   }
   return ToApiHandle<Primitive>(isolate->factory()->undefined_value());
 }
 
 
 ScriptOrigin Function::GetScriptOrigin() const {
-  i::Handle<i::JSFunction> func = Utils::OpenHandle(this);
+  auto self = Utils::OpenHandle(this);
+  if (!self->IsJSFunction()) {
+    return v8::ScriptOrigin(Local<Value>());
+  }
+  auto func = i::Handle<i::JSFunction>::cast(self);
   if (func->shared()->script()->IsScript()) {
     i::Handle<i::Script> script(i::Script::cast(func->shared()->script()));
     return GetScriptOriginForScript(func->GetIsolate(), script);
   }
   return v8::ScriptOrigin(Local<Value>());
 }
 
 
 const int Function::kLineOffsetNotFound = -1;
 
 
 int Function::GetScriptLineNumber() const {
-  i::Handle<i::JSFunction> func = Utils::OpenHandle(this);
+  auto self = Utils::OpenHandle(this);
+  if (!self->IsJSFunction()) {
+    return kLineOffsetNotFound;
+  }
+  auto func = i::Handle<i::JSFunction>::cast(self);
   if (func->shared()->script()->IsScript()) {
     i::Handle<i::Script> script(i::Script::cast(func->shared()->script()));
     return i::Script::GetLineNumber(script, func->shared()->start_position());
   }
   return kLineOffsetNotFound;
 }
 
 
 int Function::GetScriptColumnNumber() const {
-  i::Handle<i::JSFunction> func = Utils::OpenHandle(this);
+  auto self = Utils::OpenHandle(this);
+  if (!self->IsJSFunction()) {
+    return kLineOffsetNotFound;
+  }
+  auto func = i::Handle<i::JSFunction>::cast(self);
   if (func->shared()->script()->IsScript()) {
     i::Handle<i::Script> script(i::Script::cast(func->shared()->script()));
     return i::Script::GetColumnNumber(script, func->shared()->start_position());
   }
   return kLineOffsetNotFound;
 }
 
 
 bool Function::IsBuiltin() const {
-  i::Handle<i::JSFunction> func = Utils::OpenHandle(this);
+  auto self = Utils::OpenHandle(this);
+  if (!self->IsJSFunction()) {
+    return false;
+  }
+  auto func = i::Handle<i::JSFunction>::cast(self);
   return func->IsBuiltin();
 }
 
 
 int Function::ScriptId() const {
-  i::Handle<i::JSFunction> func = Utils::OpenHandle(this);
+  auto self = Utils::OpenHandle(this);
+  if (!self->IsJSFunction()) {
+    return v8::UnboundScript::kNoScriptId;
+  }
+  auto func = i::Handle<i::JSFunction>::cast(self);
   if (!func->shared()->script()->IsScript()) {
     return v8::UnboundScript::kNoScriptId;
   }
   i::Handle<i::Script> script(i::Script::cast(func->shared()->script()));
   return script->id();
 }
 
 
 Local<v8::Value> Function::GetBoundFunction() const {
-  i::Handle<i::JSFunction> func = Utils::OpenHandle(this);
+  auto self = Utils::OpenHandle(this);
+  if (!self->IsJSFunction()) {
+    return v8::Undefined(reinterpret_cast<v8::Isolate*>(self->GetIsolate()));
+  }
+  auto func = i::Handle<i::JSFunction>::cast(self);
   if (!func->shared()->bound()) {
     return v8::Undefined(reinterpret_cast<v8::Isolate*>(func->GetIsolate()));
   }
   i::Handle<i::BindingsArray> bound_args = i::Handle<i::BindingsArray>(
       i::BindingsArray::cast(func->function_bindings()));
   i::Handle<i::Object> original(bound_args->bound_function(),
                                 func->GetIsolate());
-  return Utils::ToLocal(i::Handle<i::JSFunction>::cast(original));
+  return Utils::FunctionToLocal(i::Handle<i::JSFunction>::cast(original));
 }
 
 
 int Name::GetIdentityHash() {
   auto self = Utils::OpenHandle(this);
   return static_cast<int>(self->Hash());
 }
 
 
 int String::Length() const {
@@ skipping 3207 matching lines @@
 
 MaybeLocal<Value> Debug::GetMirror(Local<Context> context,
                                    v8::Local<v8::Value> obj) {
   PREPARE_FOR_EXECUTION(context, "v8::Debug::GetMirror()", Value);
   i::Debug* isolate_debug = isolate->debug();
   has_pending_exception = !isolate_debug->Load();
   RETURN_ON_FAILED_EXECUTION(Value);
   i::Handle<i::JSObject> debug(isolate_debug->debug_context()->global_object());
   auto name = isolate->factory()->NewStringFromStaticChars("MakeMirror");
   auto fun_obj = i::Object::GetProperty(debug, name).ToHandleChecked();
-  auto v8_fun = Utils::ToLocal(i::Handle<i::JSFunction>::cast(fun_obj));
+  auto v8_fun = Utils::FunctionToLocal(i::Handle<i::JSFunction>::cast(fun_obj));
   const int kArgc = 1;
   v8::Local<v8::Value> argv[kArgc] = {obj};
   Local<Value> result;
   has_pending_exception = !v8_fun->Call(context, Utils::ToLocal(debug), kArgc,
                                         argv).ToLocal(&result);
   RETURN_ON_FAILED_EXECUTION(Value);
   RETURN_ESCAPED(result);
 }
 
 
@@ skipping 671 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