[runtime] Rewrite Function.prototype.toString in C++.

src/runtime/runtime-function.cc

 // 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.
 
 #include "src/runtime/runtime-utils.h"
 
 #include "src/accessors.h"
 #include "src/arguments.h"
 #include "src/compiler.h"
 #include "src/deoptimizer.h"
@@ skipping 20 matching lines @@
 
   CONVERT_ARG_HANDLE_CHECKED(JSFunction, f, 0);
   CONVERT_ARG_HANDLE_CHECKED(String, name, 1);
 
   name = String::Flatten(name);
   f->shared()->set_name(*name);
   return isolate->heap()->undefined_value();
 }
 
 
-RUNTIME_FUNCTION(Runtime_FunctionNameShouldPrintAsAnonymous) {
-  SealHandleScope shs(isolate);
-  DCHECK(args.length() == 1);
-  CONVERT_ARG_CHECKED(JSFunction, f, 0);
-  return isolate->heap()->ToBoolean(
-      f->shared()->name_should_print_as_anonymous());
-}
-
-
 RUNTIME_FUNCTION(Runtime_CompleteFunctionConstruction) {
   SealHandleScope shs(isolate);
   DCHECK(args.length() == 3);
   CONVERT_ARG_HANDLE_CHECKED(JSFunction, func, 0);
   CONVERT_ARG_HANDLE_CHECKED(JSFunction, constructor, 1);
   CONVERT_ARG_HANDLE_CHECKED(Object, unchecked_new_target, 2);
   func->shared()->set_name_should_print_as_anonymous(true);
 
   if (unchecked_new_target->IsUndefined()) return *func;
 
@@ skipping 22 matching lines @@
 
   Handle<Context> context(func->context(), isolate);
   Handle<JSFunction> result =
       isolate->factory()->NewFunctionFromSharedFunctionInfo(
           map, shared_info, context, NOT_TENURED);
   DCHECK_EQ(func->IsConstructor(), result->IsConstructor());
   return *result;
 }
 
 
-RUNTIME_FUNCTION(Runtime_FunctionIsArrow) {
-  SealHandleScope shs(isolate);
-  DCHECK(args.length() == 1);
-  CONVERT_ARG_CHECKED(JSFunction, f, 0);
-  return isolate->heap()->ToBoolean(f->shared()->is_arrow());
-}
-
-
-RUNTIME_FUNCTION(Runtime_FunctionIsConciseMethod) {
-  SealHandleScope shs(isolate);
-  DCHECK(args.length() == 1);
-  CONVERT_ARG_CHECKED(JSFunction, f, 0);
-  return isolate->heap()->ToBoolean(f->shared()->is_concise_method());
-}
-
-
 RUNTIME_FUNCTION(Runtime_FunctionRemovePrototype) {
   SealHandleScope shs(isolate);
   DCHECK(args.length() == 1);
 
   CONVERT_ARG_CHECKED(JSFunction, f, 0);
   RUNTIME_ASSERT(f->RemovePrototype());
   f->shared()->set_construct_stub(
       *isolate->builtins()->ConstructedNonConstructable());
 
   return isolate->heap()->undefined_value();
@@ skipping 85 matching lines @@
 
 RUNTIME_FUNCTION(Runtime_FunctionIsAPIFunction) {
   SealHandleScope shs(isolate);
   DCHECK(args.length() == 1);
 
   CONVERT_ARG_CHECKED(JSFunction, f, 0);
   return isolate->heap()->ToBoolean(f->shared()->IsApiFunction());
 }
 
 
-RUNTIME_FUNCTION(Runtime_FunctionHidesSource) {
-  SealHandleScope shs(isolate);
-  DCHECK(args.length() == 1);
-  CONVERT_ARG_CHECKED(JSFunction, f, 0);
-
-  SharedFunctionInfo* shared = f->shared();
-  bool hide_source = !shared->script()->IsScript() ||
-                     Script::cast(shared->script())->hide_source();
-  return isolate->heap()->ToBoolean(hide_source);
-}
-
-
 RUNTIME_FUNCTION(Runtime_SetCode) {
   HandleScope scope(isolate);
   DCHECK(args.length() == 2);
 
   CONVERT_ARG_HANDLE_CHECKED(JSFunction, target, 0);
   CONVERT_ARG_HANDLE_CHECKED(JSFunction, source, 1);
 
   Handle<SharedFunctionInfo> target_shared(target->shared());
   Handle<SharedFunctionInfo> source_shared(source->shared());
   RUNTIME_ASSERT(!source_shared->bound());
@@ skipping 377 matching lines @@
 }
 
 
 RUNTIME_FUNCTION(Runtime_ThrowStrongModeTooFewArguments) {
   HandleScope scope(isolate);
   DCHECK(args.length() == 0);
   THROW_NEW_ERROR_RETURN_FAILURE(isolate,
                                  NewTypeError(MessageTemplate::kStrongArity));
 }
 
+
+RUNTIME_FUNCTION(Runtime_FunctionToString) {
+  HandleScope scope(isolate);
+  DCHECK_EQ(1, args.length());
+  CONVERT_ARG_HANDLE_CHECKED(JSFunction, function, 0);
+  return *JSFunction::ToString(function);
+}
+
 }  // namespace internal
 }  // namespace v8