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// Copyright 2015 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "cobalt/dom/data_view.h"
namespace cobalt {
namespace dom {
DataView::DataView(const scoped_refptr<ArrayBuffer>& buffer,
script::ExceptionState* exception_state)
: buffer_(buffer),
byte_offset_(0),
byte_length_(buffer ? buffer->byte_length() : 0) {
if (!buffer) {
exception_state->SetSimpleException(script::kNotAnArrayBuffer);
}
}
DataView::DataView(const scoped_refptr<ArrayBuffer>& buffer, uint32 byte_offset,
script::ExceptionState* exception_state)
: buffer_(buffer),
byte_offset_(byte_offset),
byte_length_(buffer ? buffer->byte_length() - byte_offset : 0) {
if (!buffer) {
exception_state->SetSimpleException(script::kNotAnArrayBuffer);
} else if (byte_offset_ > buffer_->byte_length()) {
exception_state->SetSimpleException(script::kOutsideBounds);
}
}
DataView::DataView(const scoped_refptr<ArrayBuffer>& buffer, uint32 byte_offset,
uint32 byte_length, script::ExceptionState* exception_state)
: buffer_(buffer), byte_offset_(byte_offset), byte_length_(byte_length) {
if (!buffer) {
exception_state->SetSimpleException(script::kNotAnArrayBuffer);
} else if (byte_offset_ > buffer_->byte_length()) {
exception_state->SetSimpleException(script::kOutsideBounds);
} else if (byte_offset_ + byte_length_ > buffer_->byte_length()) {
exception_state->SetSimpleException(script::kInvalidLength);
}
}
void DataView::TraceMembers(script::Tracer* tracer) { tracer->Trace(buffer_); }
} // namespace dom
} // namespace cobalt