vegorov@google.com
a1e2035eda
- Merge array allocation and List._copyFromObjectArray to provide memmove fast path; - In optimizer given v2 = CreateArray(v0, v1) fold v2.length load to v1; BUG= R=iposva@google.com, srdjan@google.com Review URL: https://codereview.chromium.org//536043002 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@39831 260f80e4-7a28-3924-810f-c04153c831b5
95 lines
3.3 KiB
C++
95 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 "platform/assert.h"
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#include "vm/bootstrap_natives.h"
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#include "vm/assembler.h"
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#include "vm/bigint_operations.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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namespace dart {
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DEFINE_NATIVE_ENTRY(List_allocate, 2) {
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// Implemented in FlowGraphBuilder::VisitNativeBody.
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UNREACHABLE();
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return Object::null();
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}
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DEFINE_NATIVE_ENTRY(List_getIndexed, 2) {
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const Array& array = Array::CheckedHandle(arguments->NativeArgAt(0));
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GET_NON_NULL_NATIVE_ARGUMENT(Smi, index, arguments->NativeArgAt(1));
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if ((index.Value() < 0) || (index.Value() >= array.Length())) {
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const Array& args = Array::Handle(Array::New(1));
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args.SetAt(0, index);
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Exceptions::ThrowByType(Exceptions::kRange, args);
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}
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return array.At(index.Value());
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}
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DEFINE_NATIVE_ENTRY(List_setIndexed, 3) {
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const Array& array = Array::CheckedHandle(arguments->NativeArgAt(0));
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GET_NON_NULL_NATIVE_ARGUMENT(Smi, index, arguments->NativeArgAt(1));
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const Instance& value = Instance::CheckedHandle(arguments->NativeArgAt(2));
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if ((index.Value() < 0) || (index.Value() >= array.Length())) {
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const Array& args = Array::Handle(Array::New(1));
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args.SetAt(0, index);
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Exceptions::ThrowByType(Exceptions::kRange, args);
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}
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array.SetAt(index.Value(), value);
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return Object::null();
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}
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DEFINE_NATIVE_ENTRY(List_getLength, 1) {
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const Array& array = Array::CheckedHandle(arguments->NativeArgAt(0));
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return Smi::New(array.Length());
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}
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// ObjectArray src, int start, int count, bool needTypeArgument.
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DEFINE_NATIVE_ENTRY(List_slice, 4) {
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const Array& src = Array::CheckedHandle(arguments->NativeArgAt(0));
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GET_NON_NULL_NATIVE_ARGUMENT(Smi, start, arguments->NativeArgAt(1));
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GET_NON_NULL_NATIVE_ARGUMENT(Smi, count, arguments->NativeArgAt(2));
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GET_NON_NULL_NATIVE_ARGUMENT(Bool, needs_type_arg, arguments->NativeArgAt(3));
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intptr_t icount = count.Value();
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// Zero count should be handled outside already.
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if ((icount <= 0) || (icount >= Array::kMaxElements)) {
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Exceptions::ThrowByType(Exceptions::kArgument, Object::empty_array());
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}
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intptr_t istart = start.Value();
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if ((istart < 0) || ((istart + icount) > src.Length())) {
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const Array& args = Array::Handle(Array::New(1));
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args.SetAt(0, start);
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Exceptions::ThrowByType(Exceptions::kRange, args);
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}
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return src.Slice(istart, icount, needs_type_arg.value());
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}
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// Private factory, expects correct arguments.
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DEFINE_NATIVE_ENTRY(ImmutableList_from, 4) {
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// Ignore first argument of a thsi factory (type argument).
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const Array& from_array = Array::CheckedHandle(arguments->NativeArgAt(1));
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const Smi& smi_offset = Smi::CheckedHandle(arguments->NativeArgAt(2));
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const Smi& smi_length = Smi::CheckedHandle(arguments->NativeArgAt(3));
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const intptr_t length = smi_length.Value();
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const intptr_t offset = smi_offset.Value();
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const Array& result = Array::Handle(Array::New(length));
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Object& temp = Object::Handle();
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for (intptr_t i = 0; i < length; i++) {
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temp = from_array.At(i + offset);
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result.SetAt(i, temp);
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}
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result.MakeImmutable();
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return result.raw();
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}
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} // namespace dart
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