hausner@google.com
4258c115b4
IO errors on the URL of a deferred library are forwarded to the Future that handles the deferred load. Syntax errors and finalization errors are lethal, killing the isolate. Review URL: https://codereview.chromium.org//419103003 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@38800 260f80e4-7a28-3924-810f-c04153c831b5
307 lines
11 KiB
C++
307 lines
11 KiB
C++
// Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#include "vm/bootstrap_natives.h"
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#include "lib/invocation_mirror.h"
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#include "vm/code_patcher.h"
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#include "vm/exceptions.h"
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#include "vm/heap.h"
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#include "vm/native_entry.h"
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#include "vm/object.h"
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#include "vm/report.h"
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#include "vm/stack_frame.h"
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#include "vm/symbols.h"
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namespace dart {
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DECLARE_FLAG(bool, enable_type_checks);
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DECLARE_FLAG(bool, trace_type_checks);
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DECLARE_FLAG(bool, warn_on_javascript_compatibility);
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DEFINE_NATIVE_ENTRY(Object_equals, 1) {
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// Implemented in the flow graph builder.
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UNREACHABLE();
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return Object::null();
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}
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DEFINE_NATIVE_ENTRY(Object_getHash, 1) {
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const Instance& instance = Instance::CheckedHandle(arguments->NativeArgAt(0));
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Heap* heap = isolate->heap();
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return Smi::New(heap->GetHash(instance.raw()));
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}
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DEFINE_NATIVE_ENTRY(Object_setHash, 2) {
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const Instance& instance = Instance::CheckedHandle(arguments->NativeArgAt(0));
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GET_NON_NULL_NATIVE_ARGUMENT(Smi, hash, arguments->NativeArgAt(1));
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Heap* heap = isolate->heap();
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heap->SetHash(instance.raw(), hash.Value());
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return Object::null();
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}
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DEFINE_NATIVE_ENTRY(Object_toString, 1) {
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const Instance& instance = Instance::CheckedHandle(arguments->NativeArgAt(0));
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const char* c_str = instance.ToCString();
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return String::New(c_str);
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}
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DEFINE_NATIVE_ENTRY(Object_noSuchMethod, 6) {
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const Instance& instance = Instance::CheckedHandle(arguments->NativeArgAt(0));
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GET_NON_NULL_NATIVE_ARGUMENT(Bool, is_method, arguments->NativeArgAt(1));
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GET_NON_NULL_NATIVE_ARGUMENT(String, member_name, arguments->NativeArgAt(2));
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GET_NON_NULL_NATIVE_ARGUMENT(Smi, invocation_type, arguments->NativeArgAt(3));
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GET_NON_NULL_NATIVE_ARGUMENT(Instance, func_args, arguments->NativeArgAt(4));
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GET_NON_NULL_NATIVE_ARGUMENT(
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Instance, func_named_args, arguments->NativeArgAt(5));
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const Array& dart_arguments = Array::Handle(Array::New(6));
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dart_arguments.SetAt(0, instance);
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dart_arguments.SetAt(1, member_name);
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dart_arguments.SetAt(2, invocation_type);
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dart_arguments.SetAt(3, func_args);
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dart_arguments.SetAt(4, func_named_args);
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if (is_method.value() &&
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(((invocation_type.Value() >> InvocationMirror::kCallShift) &
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InvocationMirror::kCallMask) != InvocationMirror::kSuper)) {
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// Report if a function with same name (but different arguments) has been
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// found.
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Function& function = Function::Handle();
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if (instance.IsClosure()) {
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function = Closure::function(instance);
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} else {
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Class& instance_class = Class::Handle(instance.clazz());
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function = instance_class.LookupDynamicFunction(member_name);
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while (function.IsNull()) {
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instance_class = instance_class.SuperClass();
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if (instance_class.IsNull()) break;
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function = instance_class.LookupDynamicFunction(member_name);
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}
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}
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if (!function.IsNull()) {
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const intptr_t total_num_parameters = function.NumParameters();
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const Array& array = Array::Handle(Array::New(total_num_parameters - 1));
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// Skip receiver.
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for (int i = 1; i < total_num_parameters; i++) {
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array.SetAt(i - 1, String::Handle(function.ParameterNameAt(i)));
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}
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dart_arguments.SetAt(5, array);
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}
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}
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Exceptions::ThrowByType(Exceptions::kNoSuchMethod, dart_arguments);
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return Object::null();
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}
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DEFINE_NATIVE_ENTRY(Object_runtimeType, 1) {
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const Instance& instance = Instance::CheckedHandle(arguments->NativeArgAt(0));
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// Special handling for following types outside this native.
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ASSERT(!instance.IsString() && !instance.IsInteger() && !instance.IsDouble());
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return instance.GetType();
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}
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static void WarnOnJSIntegralNumTypeTest(
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const Instance& instance,
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const TypeArguments& instantiator_type_arguments,
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const AbstractType& type) {
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const bool instance_is_int = instance.IsInteger();
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const bool instance_is_double = instance.IsDouble();
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if (!(instance_is_int || instance_is_double)) {
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return;
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}
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AbstractType& instantiated_type = AbstractType::Handle(type.raw());
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if (!type.IsInstantiated()) {
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instantiated_type = type.InstantiateFrom(instantiator_type_arguments, NULL);
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}
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if (instance_is_double) {
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if (instantiated_type.IsIntType()) {
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const double value = Double::Cast(instance).value();
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if (floor(value) == value) {
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Report::JSWarningFromNative(
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false, // Object_instanceOf and Object_as are not static calls.
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"integral value of type 'double' is also considered to be "
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"of type 'int'");
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}
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}
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} else {
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ASSERT(instance_is_int);
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if (instantiated_type.IsDoubleType()) {
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Report::JSWarningFromNative(
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false, // Object_instanceOf and Object_as are not static calls.
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"integer value is also considered to be of type 'double'");
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}
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}
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}
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DEFINE_NATIVE_ENTRY(Object_instanceOf, 5) {
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const Instance& instance =
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Instance::CheckedHandle(isolate, arguments->NativeArgAt(0));
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// Instantiator at position 1 is not used. It is passed along so that the call
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// can be easily converted to an optimized implementation. Instantiator is
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// used to populate the subtype cache.
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const TypeArguments& instantiator_type_arguments =
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TypeArguments::CheckedHandle(isolate, arguments->NativeArgAt(2));
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const AbstractType& type =
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AbstractType::CheckedHandle(isolate, arguments->NativeArgAt(3));
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const Bool& negate = Bool::CheckedHandle(isolate, arguments->NativeArgAt(4));
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ASSERT(type.IsFinalized());
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ASSERT(!type.IsMalformed());
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ASSERT(!type.IsMalbounded());
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// Check for javascript compatibility.
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if (FLAG_warn_on_javascript_compatibility) {
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WarnOnJSIntegralNumTypeTest(instance, instantiator_type_arguments, type);
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}
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Error& bound_error = Error::Handle(isolate, Error::null());
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const bool is_instance_of = instance.IsInstanceOf(type,
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instantiator_type_arguments,
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&bound_error);
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if (FLAG_trace_type_checks) {
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const char* result_str = is_instance_of ? "true" : "false";
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OS::Print("Native Object.instanceOf: result %s\n", result_str);
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const Type& instance_type = Type::Handle(instance.GetType());
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OS::Print(" instance type: %s\n",
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String::Handle(instance_type.Name()).ToCString());
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OS::Print(" test type: %s\n", String::Handle(type.Name()).ToCString());
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if (!bound_error.IsNull()) {
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OS::Print(" bound error: %s\n", bound_error.ToErrorCString());
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}
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}
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if (!is_instance_of && !bound_error.IsNull()) {
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// Throw a dynamic type error only if the instanceof test fails.
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DartFrameIterator iterator;
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StackFrame* caller_frame = iterator.NextFrame();
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ASSERT(caller_frame != NULL);
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const intptr_t location = caller_frame->GetTokenPos();
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String& bound_error_message = String::Handle(
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isolate, String::New(bound_error.ToErrorCString()));
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Exceptions::CreateAndThrowTypeError(
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location, Symbols::Empty(), Symbols::Empty(),
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Symbols::Empty(), bound_error_message);
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UNREACHABLE();
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}
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return Bool::Get(negate.value() ? !is_instance_of : is_instance_of).raw();
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}
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DEFINE_NATIVE_ENTRY(Object_as, 4) {
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const Instance& instance = Instance::CheckedHandle(arguments->NativeArgAt(0));
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// Instantiator at position 1 is not used. It is passed along so that the call
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// can be easily converted to an optimized implementation. Instantiator is
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// used to populate the subtype cache.
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const TypeArguments& instantiator_type_arguments =
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TypeArguments::CheckedHandle(arguments->NativeArgAt(2));
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const AbstractType& type =
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AbstractType::CheckedHandle(arguments->NativeArgAt(3));
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ASSERT(type.IsFinalized());
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ASSERT(!type.IsMalformed());
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ASSERT(!type.IsMalbounded());
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Error& bound_error = Error::Handle();
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if (instance.IsNull()) {
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return instance.raw();
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}
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// Check for javascript compatibility.
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if (FLAG_warn_on_javascript_compatibility) {
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WarnOnJSIntegralNumTypeTest(instance, instantiator_type_arguments, type);
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}
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const bool is_instance_of = instance.IsInstanceOf(type,
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instantiator_type_arguments,
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&bound_error);
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if (FLAG_trace_type_checks) {
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const char* result_str = is_instance_of ? "true" : "false";
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OS::Print("Object.as: result %s\n", result_str);
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const Type& instance_type = Type::Handle(instance.GetType());
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OS::Print(" instance type: %s\n",
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String::Handle(instance_type.Name()).ToCString());
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OS::Print(" cast type: %s\n", String::Handle(type.Name()).ToCString());
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if (!bound_error.IsNull()) {
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OS::Print(" bound error: %s\n", bound_error.ToErrorCString());
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}
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}
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if (!is_instance_of) {
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DartFrameIterator iterator;
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StackFrame* caller_frame = iterator.NextFrame();
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ASSERT(caller_frame != NULL);
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const intptr_t location = caller_frame->GetTokenPos();
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const AbstractType& instance_type =
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AbstractType::Handle(instance.GetType());
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const String& instance_type_name =
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String::Handle(instance_type.UserVisibleName());
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String& type_name = String::Handle();
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if (!type.IsInstantiated()) {
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// Instantiate type before reporting the error.
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const AbstractType& instantiated_type = AbstractType::Handle(
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type.InstantiateFrom(instantiator_type_arguments, NULL));
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// Note that instantiated_type may be malformed.
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type_name = instantiated_type.UserVisibleName();
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} else {
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type_name = type.UserVisibleName();
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}
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String& bound_error_message = String::Handle();
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if (bound_error.IsNull()) {
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const String& dst_name = String::ZoneHandle(
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Symbols::New(Exceptions::kCastErrorDstName));
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Exceptions::CreateAndThrowTypeError(
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location, instance_type_name, type_name,
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dst_name, Object::null_string());
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} else {
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ASSERT(FLAG_enable_type_checks);
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bound_error_message = String::New(bound_error.ToErrorCString());
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Exceptions::CreateAndThrowTypeError(
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location, instance_type_name, Symbols::Empty(),
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Symbols::Empty(), bound_error_message);
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}
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UNREACHABLE();
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}
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return instance.raw();
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}
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DEFINE_NATIVE_ENTRY(AbstractType_toString, 1) {
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const AbstractType& type =
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AbstractType::CheckedHandle(arguments->NativeArgAt(0));
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return type.UserVisibleName();
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}
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DEFINE_NATIVE_ENTRY(LibraryPrefix_invalidateDependentCode, 1) {
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const LibraryPrefix& prefix =
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LibraryPrefix::CheckedHandle(arguments->NativeArgAt(0));
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prefix.InvalidateDependentCode();
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return Bool::Get(true).raw();
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}
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DEFINE_NATIVE_ENTRY(LibraryPrefix_load, 1) {
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const LibraryPrefix& prefix =
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LibraryPrefix::CheckedHandle(arguments->NativeArgAt(0));
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bool hasCompleted = prefix.LoadLibrary();
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return Bool::Get(hasCompleted).raw();
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}
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DEFINE_NATIVE_ENTRY(LibraryPrefix_loadError, 1) {
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const LibraryPrefix& prefix =
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LibraryPrefix::CheckedHandle(arguments->NativeArgAt(0));
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// Currently all errors are Dart instances, e.g. I/O errors
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// created by deferred loading code. LanguageErrors from
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// failed loading or finalization attempts are propagated and result
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// in the isolate's death.
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const Instance& error = Instance::Handle(prefix.LoadError());
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return error.raw();
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}
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} // namespace dart
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