blob: 362e586572891ecaa2cc14301e052908ec810004 [file] [log] [blame]
// 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_allocate, 0, 2) {
// Implemented in FlowGraphBuilder::VisitNativeBody.
UNREACHABLE();
return Object::null();
}
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 this 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