Alexander Markov
45dddb2807
This reverts commit 44e8da3ecd.
R=zra@google.com
Review-Url: https://codereview.chromium.org/2984083002 .
99 lines
4.0 KiB
C++
99 lines
4.0 KiB
C++
// Copyright (c) 2012, 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 "vm/compiler.h"
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#include "vm/dart_entry.h"
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#include "vm/exceptions.h"
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#include "vm/native_entry.h"
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#include "vm/object.h"
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#include "vm/symbols.h"
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namespace dart {
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DEFINE_NATIVE_ENTRY(Function_apply, 2) {
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const int kTypeArgsLen = 0; // TODO(regis): Add support for generic function.
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const Array& fun_arguments =
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Array::CheckedHandle(zone, arguments->NativeArgAt(0));
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const Array& fun_arg_names =
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Array::CheckedHandle(zone, arguments->NativeArgAt(1));
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const Array& fun_args_desc = Array::Handle(
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zone, ArgumentsDescriptor::New(kTypeArgsLen, fun_arguments.Length(),
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fun_arg_names));
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const Object& result = Object::Handle(
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zone, DartEntry::InvokeClosure(fun_arguments, fun_args_desc));
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if (result.IsError()) {
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Exceptions::PropagateError(Error::Cast(result));
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}
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return result.raw();
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}
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DEFINE_NATIVE_ENTRY(Closure_equals, 2) {
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const Closure& receiver =
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Closure::CheckedHandle(zone, arguments->NativeArgAt(0));
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GET_NATIVE_ARGUMENT(Instance, other, arguments->NativeArgAt(1));
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ASSERT(!other.IsNull());
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if (receiver.raw() == other.raw()) return Bool::True().raw();
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if (other.IsClosure()) {
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const Function& func_a = Function::Handle(zone, receiver.function());
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const Function& func_b =
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Function::Handle(zone, Closure::Cast(other).function());
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if (func_a.raw() == func_b.raw()) {
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ASSERT(!func_a.IsImplicitStaticClosureFunction());
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if (func_a.IsImplicitInstanceClosureFunction()) {
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const Context& context_a = Context::Handle(zone, receiver.context());
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const Context& context_b =
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Context::Handle(zone, Closure::Cast(other).context());
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const Object& receiver_a = Object::Handle(zone, context_a.At(0));
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const Object& receiver_b = Object::Handle(zone, context_b.At(0));
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if (receiver_a.raw() == receiver_b.raw()) return Bool::True().raw();
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}
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} else if (func_a.IsImplicitInstanceClosureFunction() &&
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func_b.IsImplicitInstanceClosureFunction()) {
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// TODO(rmacnak): Patch existing tears off during reload instead.
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const Context& context_a = Context::Handle(zone, receiver.context());
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const Context& context_b =
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Context::Handle(zone, Closure::Cast(other).context());
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const Object& receiver_a = Object::Handle(zone, context_a.At(0));
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const Object& receiver_b = Object::Handle(zone, context_b.At(0));
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if ((receiver_a.raw() == receiver_b.raw()) &&
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(func_a.name() == func_b.name()) &&
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(func_a.Owner() == func_b.Owner())) {
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return Bool::True().raw();
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}
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}
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}
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return Bool::False().raw();
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}
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DEFINE_NATIVE_ENTRY(Closure_computeHash, 1) {
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const Closure& receiver =
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Closure::CheckedHandle(zone, arguments->NativeArgAt(0));
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return Smi::New(receiver.ComputeHash());
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}
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DEFINE_NATIVE_ENTRY(Closure_clone, 1) {
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const Closure& receiver =
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Closure::CheckedHandle(zone, arguments->NativeArgAt(0));
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const TypeArguments& instantiator_type_arguments =
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TypeArguments::Handle(zone, receiver.instantiator_type_arguments());
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const TypeArguments& function_type_arguments =
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TypeArguments::Handle(zone, receiver.function_type_arguments());
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const Function& function = Function::Handle(zone, receiver.function());
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const Context& context = Context::Handle(zone, receiver.context());
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Context& cloned_context =
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Context::Handle(zone, Context::New(context.num_variables()));
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cloned_context.set_parent(Context::Handle(zone, context.parent()));
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Object& instance = Object::Handle(zone);
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for (int i = 0; i < context.num_variables(); i++) {
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instance = context.At(i);
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cloned_context.SetAt(i, instance);
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}
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return Closure::New(instantiator_type_arguments, function_type_arguments,
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function, cloned_context);
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}
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} // namespace dart
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