// 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