| // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| #include "platform/assert.h" |
| #include "vm/bootstrap_natives.h" |
| #include "vm/exceptions.h" |
| #include "vm/native_entry.h" |
| #include "vm/object.h" |
| |
| namespace dart { |
| |
| DEFINE_NATIVE_ENTRY(List_new, 0, 2) { |
| // This function is handled by flow-graph builder. |
| UNREACHABLE(); |
| return Object::null(); |
| } |
| |
| DEFINE_NATIVE_ENTRY(List_allocate, 0, 2) { |
| // Implemented in FlowGraphBuilder::VisitNativeBody. |
| UNREACHABLE(); |
| return Object::null(); |
| } |
| |
| DEFINE_NATIVE_ENTRY(List_getIndexed, 0, 2) { |
| const Array& array = Array::CheckedHandle(zone, arguments->NativeArgAt(0)); |
| GET_NON_NULL_NATIVE_ARGUMENT(Smi, index, arguments->NativeArgAt(1)); |
| if ((index.Value() < 0) || (index.Value() >= array.Length())) { |
| Exceptions::ThrowRangeError("index", index, 0, array.Length() - 1); |
| } |
| return array.At(index.Value()); |
| } |
| |
| DEFINE_NATIVE_ENTRY(List_setIndexed, 0, 3) { |
| const Array& array = Array::CheckedHandle(zone, arguments->NativeArgAt(0)); |
| GET_NON_NULL_NATIVE_ARGUMENT(Smi, index, arguments->NativeArgAt(1)); |
| const Instance& value = |
| Instance::CheckedHandle(zone, arguments->NativeArgAt(2)); |
| if ((index.Value() < 0) || (index.Value() >= array.Length())) { |
| Exceptions::ThrowRangeError("index", index, 0, array.Length() - 1); |
| } |
| array.SetAt(index.Value(), value); |
| return Object::null(); |
| } |
| |
| DEFINE_NATIVE_ENTRY(List_getLength, 0, 1) { |
| const Array& array = Array::CheckedHandle(zone, arguments->NativeArgAt(0)); |
| return Smi::New(array.Length()); |
| } |
| |
| // ObjectArray src, int start, int count, bool needTypeArgument. |
| DEFINE_NATIVE_ENTRY(List_slice, 0, 4) { |
| const Array& src = Array::CheckedHandle(zone, arguments->NativeArgAt(0)); |
| GET_NON_NULL_NATIVE_ARGUMENT(Smi, start, arguments->NativeArgAt(1)); |
| GET_NON_NULL_NATIVE_ARGUMENT(Smi, count, arguments->NativeArgAt(2)); |
| GET_NON_NULL_NATIVE_ARGUMENT(Bool, needs_type_arg, arguments->NativeArgAt(3)); |
| intptr_t istart = start.Value(); |
| if ((istart < 0) || (istart > src.Length())) { |
| Exceptions::ThrowRangeError("start", start, 0, src.Length()); |
| } |
| intptr_t icount = count.Value(); |
| // Zero count should be handled outside already. |
| if ((icount <= 0) || (icount > src.Length())) { |
| Exceptions::ThrowRangeError("count", count, |
| 0, // This is the limit the user sees. |
| src.Length() - istart); |
| } |
| |
| return src.Slice(istart, icount, needs_type_arg.value()); |
| } |
| |
| // Private factory, expects correct arguments. |
| DEFINE_NATIVE_ENTRY(ImmutableList_from, 0, 4) { |
| // Ignore first argument of a thsi factory (type argument). |
| const Array& from_array = |
| Array::CheckedHandle(zone, arguments->NativeArgAt(1)); |
| const Smi& smi_offset = Smi::CheckedHandle(zone, arguments->NativeArgAt(2)); |
| const Smi& smi_length = Smi::CheckedHandle(zone, arguments->NativeArgAt(3)); |
| const intptr_t length = smi_length.Value(); |
| const intptr_t offset = smi_offset.Value(); |
| const Array& result = Array::Handle(Array::New(length)); |
| Object& temp = Object::Handle(); |
| for (intptr_t i = 0; i < length; i++) { |
| temp = from_array.At(i + offset); |
| result.SetAt(i, temp); |
| } |
| result.MakeImmutable(); |
| return result.ptr(); |
| } |
| |
| } // namespace dart |