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https://github.com/dart-lang/sdk
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7f57ebcfa1
They were used as the class of closure instances and as the type class of function types. All closure instances now have class _Closure and function types are represented by a new class FunctionType extending AbstractType. Fix issue 24567 and add regression test. R=asiva@google.com, rmacnak@google.com Review URL: https://codereview.chromium.org/1584223006 .
92 lines
3.3 KiB
C++
92 lines
3.3 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 Array& fun_arguments = Array::CheckedHandle(arguments->NativeArgAt(0));
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const Array& fun_arg_names = Array::CheckedHandle(arguments->NativeArgAt(1));
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const Array& fun_args_desc =
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Array::Handle(ArgumentsDescriptor::New(fun_arguments.Length(),
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fun_arg_names));
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const Object& result =
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Object::Handle(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 = Closure::CheckedHandle(
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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(receiver.function());
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const Function& func_b = Function::Handle(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(receiver.context());
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const Context& context_b = Context::Handle(
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Closure::Cast(other).context());
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const Object& receiver_a = Object::Handle(context_a.At(0));
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const Object& receiver_b = Object::Handle(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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}
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}
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return Bool::False().raw();
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}
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DEFINE_NATIVE_ENTRY(Closure_hashCode, 1) {
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const Closure& receiver = Closure::CheckedHandle(
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zone, arguments->NativeArgAt(0));
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const Function& func = Function::Handle(receiver.function());
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// Hash together name, class name and signature.
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const Class& cls = Class::Handle(func.Owner());
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intptr_t result = String::Handle(func.name()).Hash();
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result += String::Handle(func.Signature()).Hash();
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result += String::Handle(cls.Name()).Hash();
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// Finalize hash value like for strings so that it fits into a smi.
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result += result << 3;
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result ^= result >> 11;
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result += result << 15;
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result &= ((static_cast<intptr_t>(1) << String::kHashBits) - 1);
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return Smi::New(result);
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}
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DEFINE_NATIVE_ENTRY(Closure_clone, 1) {
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const Closure& receiver = Closure::CheckedHandle(
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zone, arguments->NativeArgAt(0));
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const Function& func = Function::Handle(zone, receiver.function());
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const Context& ctx = Context::Handle(zone, receiver.context());
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Context& cloned_ctx =
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Context::Handle(zone, Context::New(ctx.num_variables()));
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cloned_ctx.set_parent(Context::Handle(zone, ctx.parent()));
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Object& inst = Object::Handle(zone);
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for (int i = 0; i < ctx.num_variables(); i++) {
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inst = ctx.At(i);
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cloned_ctx.SetAt(i, inst);
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}
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return Closure::New(func, cloned_ctx);
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}
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} // namespace dart
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