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/*
* Copyright (C) 2008, 2009 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef SourceProvider_h
#define SourceProvider_h
#include "SourceProviderCache.h"
#include "UString.h"
#include <wtf/PassOwnPtr.h>
#include <wtf/RefCounted.h>
#include <wtf/UnusedParam.h>
#include <wtf/text/TextPosition.h>
namespace JSC {
class SourceProvider : public RefCounted<SourceProvider> {
public:
SourceProvider(const UString& url, const TextPosition& startPosition, SourceProviderCache* cache = 0)
: m_url(url)
, m_startPosition(startPosition)
, m_validated(false)
, m_cache(cache ? cache : new SourceProviderCache)
, m_cacheOwned(!cache)
{
turnOffVerifier();
}
virtual ~SourceProvider()
{
if (m_cacheOwned)
delete m_cache;
}
virtual UString getRange(int start, int end) const = 0;
virtual const StringImpl* data() const = 0;
virtual int length() const = 0;
const UString& url() { return m_url; }
TextPosition startPosition() const { return m_startPosition; }
intptr_t asID() { return reinterpret_cast<intptr_t>(this); }
bool isValid() const { return m_validated; }
void setValid() { m_validated = true; }
SourceProviderCache* cache() const { return m_cache; }
void notifyCacheSizeChanged(int delta) { if (!m_cacheOwned) cacheSizeChanged(delta); }
private:
virtual void cacheSizeChanged(int delta) { UNUSED_PARAM(delta); }
UString m_url;
TextPosition m_startPosition;
bool m_validated;
SourceProviderCache* m_cache;
bool m_cacheOwned;
};
class UStringSourceProvider : public SourceProvider {
public:
static PassRefPtr<UStringSourceProvider> create(const UString& source, const UString& url, const TextPosition& startPosition = TextPosition::minimumPosition())
{
return adoptRef(new UStringSourceProvider(source, url, startPosition));
}
virtual UString getRange(int start, int end) const OVERRIDE
{
return m_source.substringSharingImpl(start, end - start);
}
const StringImpl* data() const { return m_source.impl(); }
int length() const { return m_source.length(); }
private:
UStringSourceProvider(const UString& source, const UString& url, const TextPosition& startPosition)
: SourceProvider(url, startPosition)
, m_source(source)
{
}
UString m_source;
};
} // namespace JSC
#endif // SourceProvider_h
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