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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "config.h"
#include "wtf/ArrayPiece.h"
#include "wtf/ArrayBuffer.h"
#include "wtf/ArrayBufferView.h"
#include "wtf/Assertions.h"
namespace WTF {
ArrayPiece::ArrayPiece()
{
initNull();
}
ArrayPiece::ArrayPiece(void* data, unsigned byteLength)
{
initWithData(data, byteLength);
}
ArrayPiece::ArrayPiece(ArrayBuffer* buffer)
{
if (buffer) {
initWithData(buffer->data(), buffer->byteLength());
} else {
initNull();
}
}
ArrayPiece::ArrayPiece(ArrayBufferView* buffer)
{
if (buffer) {
initWithData(buffer->baseAddress(), buffer->byteLength());
} else {
initNull();
}
}
bool ArrayPiece::isNull() const
{
return m_isNull;
}
void* ArrayPiece::data() const
{
ASSERT(!isNull());
return m_data;
}
unsigned char* ArrayPiece::bytes() const
{
return static_cast<unsigned char*>(data());
}
unsigned ArrayPiece::byteLength() const
{
ASSERT(!isNull());
return m_byteLength;
}
void ArrayPiece::initWithData(void* data, unsigned byteLength)
{
m_byteLength = byteLength;
m_data = data;
m_isNull = false;
}
void ArrayPiece::initNull()
{
m_byteLength = 0;
m_data = 0;
m_isNull = true;
}
} // namespace WTF
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