| // 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/accessors.h" |
| #include "src/arguments-inl.h" |
| #include "src/compiler.h" |
| #include "src/isolate-inl.h" |
| #include "src/messages.h" |
| #include "src/runtime/runtime-utils.h" |
| |
| namespace v8 { |
| namespace internal { |
| |
| RUNTIME_FUNCTION(Runtime_FunctionGetName) { |
| HandleScope scope(isolate); |
| DCHECK_EQ(1, args.length()); |
| |
| CONVERT_ARG_HANDLE_CHECKED(JSReceiver, function, 0); |
| if (function->IsJSBoundFunction()) { |
| RETURN_RESULT_OR_FAILURE( |
| isolate, JSBoundFunction::GetName( |
| isolate, Handle<JSBoundFunction>::cast(function))); |
| } else { |
| return *JSFunction::GetName(isolate, Handle<JSFunction>::cast(function)); |
| } |
| } |
| |
| // TODO(5530): Remove once uses in debug.js are gone. |
| RUNTIME_FUNCTION(Runtime_FunctionGetScriptSource) { |
| HandleScope scope(isolate); |
| DCHECK_EQ(1, args.length()); |
| CONVERT_ARG_HANDLE_CHECKED(JSReceiver, function, 0); |
| |
| if (function->IsJSFunction()) { |
| Handle<Object> script( |
| Handle<JSFunction>::cast(function)->shared()->script(), isolate); |
| if (script->IsScript()) return Handle<Script>::cast(script)->source(); |
| } |
| return ReadOnlyRoots(isolate).undefined_value(); |
| } |
| |
| RUNTIME_FUNCTION(Runtime_FunctionGetScriptId) { |
| HandleScope scope(isolate); |
| DCHECK_EQ(1, args.length()); |
| CONVERT_ARG_HANDLE_CHECKED(JSReceiver, function, 0); |
| |
| if (function->IsJSFunction()) { |
| Handle<Object> script( |
| Handle<JSFunction>::cast(function)->shared()->script(), isolate); |
| if (script->IsScript()) { |
| return Smi::FromInt(Handle<Script>::cast(script)->id()); |
| } |
| } |
| return Smi::FromInt(-1); |
| } |
| |
| RUNTIME_FUNCTION(Runtime_FunctionGetSourceCode) { |
| HandleScope scope(isolate); |
| DCHECK_EQ(1, args.length()); |
| CONVERT_ARG_HANDLE_CHECKED(JSReceiver, function, 0); |
| if (function->IsJSFunction()) { |
| Handle<SharedFunctionInfo> shared( |
| Handle<JSFunction>::cast(function)->shared(), isolate); |
| return *SharedFunctionInfo::GetSourceCode(shared); |
| } |
| return ReadOnlyRoots(isolate).undefined_value(); |
| } |
| |
| |
| RUNTIME_FUNCTION(Runtime_FunctionGetScriptSourcePosition) { |
| SealHandleScope shs(isolate); |
| DCHECK_EQ(1, args.length()); |
| |
| CONVERT_ARG_CHECKED(JSFunction, fun, 0); |
| int pos = fun->shared()->StartPosition(); |
| return Smi::FromInt(pos); |
| } |
| |
| |
| RUNTIME_FUNCTION(Runtime_FunctionIsAPIFunction) { |
| SealHandleScope shs(isolate); |
| DCHECK_EQ(1, args.length()); |
| |
| CONVERT_ARG_CHECKED(JSFunction, f, 0); |
| return isolate->heap()->ToBoolean(f->shared()->IsApiFunction()); |
| } |
| |
| |
| RUNTIME_FUNCTION(Runtime_SetCode) { |
| HandleScope scope(isolate); |
| DCHECK_EQ(2, args.length()); |
| |
| CONVERT_ARG_HANDLE_CHECKED(JSFunction, target, 0); |
| CONVERT_ARG_HANDLE_CHECKED(JSFunction, source, 1); |
| |
| Handle<SharedFunctionInfo> target_shared(target->shared(), isolate); |
| Handle<SharedFunctionInfo> source_shared(source->shared(), isolate); |
| |
| if (!source->is_compiled() && |
| !Compiler::Compile(source, Compiler::KEEP_EXCEPTION)) { |
| return ReadOnlyRoots(isolate).exception(); |
| } |
| |
| // Set the function data, scope info, formal parameter count, and the length |
| // of the target shared function info. |
| target_shared->set_function_data(source_shared->function_data()); |
| target_shared->set_length(source_shared->GetLength()); |
| target_shared->set_raw_outer_scope_info_or_feedback_metadata( |
| source_shared->raw_outer_scope_info_or_feedback_metadata()); |
| target_shared->set_internal_formal_parameter_count( |
| source_shared->internal_formal_parameter_count()); |
| bool was_native = target_shared->native(); |
| target_shared->set_flags(source_shared->flags()); |
| target_shared->set_native(was_native); |
| target_shared->set_scope_info(source_shared->scope_info()); |
| |
| Handle<Object> source_script(source_shared->script(), isolate); |
| int function_literal_id = source_shared->FunctionLiteralId(isolate); |
| if (source_script->IsScript()) { |
| SharedFunctionInfo::SetScript(source_shared, |
| isolate->factory()->undefined_value(), |
| function_literal_id); |
| } |
| SharedFunctionInfo::SetScript(target_shared, source_script, |
| function_literal_id); |
| |
| // Set the code of the target function. |
| target->set_code(source_shared->GetCode()); |
| Handle<Context> context(source->context(), isolate); |
| target->set_context(*context); |
| |
| // Make sure we get a fresh copy of the feedback vector to avoid cross |
| // context contamination, and that the feedback vector makes it's way into |
| // the target_shared optimized code map. |
| JSFunction::EnsureFeedbackVector(target); |
| |
| if (isolate->logger()->is_listening_to_code_events() || |
| isolate->is_profiling()) { |
| isolate->logger()->LogExistingFunction( |
| source_shared, handle(source_shared->abstract_code(), isolate)); |
| } |
| |
| return *target; |
| } |
| |
| |
| // Set the native flag on the function. |
| // This is used to decide if we should transform null and undefined |
| // into the global object when doing call and apply. |
| RUNTIME_FUNCTION(Runtime_SetNativeFlag) { |
| SealHandleScope shs(isolate); |
| DCHECK_EQ(1, args.length()); |
| |
| CONVERT_ARG_CHECKED(Object, object, 0); |
| |
| if (object->IsJSFunction()) { |
| JSFunction* func = JSFunction::cast(object); |
| func->shared()->set_native(true); |
| } |
| return ReadOnlyRoots(isolate).undefined_value(); |
| } |
| |
| |
| RUNTIME_FUNCTION(Runtime_IsConstructor) { |
| SealHandleScope shs(isolate); |
| DCHECK_EQ(1, args.length()); |
| CONVERT_ARG_CHECKED(Object, object, 0); |
| return isolate->heap()->ToBoolean(object->IsConstructor()); |
| } |
| |
| |
| RUNTIME_FUNCTION(Runtime_Call) { |
| HandleScope scope(isolate); |
| DCHECK_LE(2, args.length()); |
| int const argc = args.length() - 2; |
| CONVERT_ARG_HANDLE_CHECKED(Object, target, 0); |
| CONVERT_ARG_HANDLE_CHECKED(Object, receiver, 1); |
| ScopedVector<Handle<Object>> argv(argc); |
| for (int i = 0; i < argc; ++i) { |
| argv[i] = args.at(2 + i); |
| } |
| RETURN_RESULT_OR_FAILURE( |
| isolate, Execution::Call(isolate, target, receiver, argc, argv.start())); |
| } |
| |
| |
| RUNTIME_FUNCTION(Runtime_IsFunction) { |
| SealHandleScope shs(isolate); |
| DCHECK_EQ(1, args.length()); |
| CONVERT_ARG_CHECKED(Object, object, 0); |
| return isolate->heap()->ToBoolean(object->IsFunction()); |
| } |
| |
| |
| } // namespace internal |
| } // namespace v8 |