#ifndef SourceProvider_h
#define SourceProvider_h
#include <wtf/PassOwnPtr.h>
#include <wtf/RefCounted.h>
#include <wtf/text/TextPosition.h>
#include <wtf/text/WTFString.h>
namespace JSC {
class SourceProvider : public RefCounted<SourceProvider> {
public:
static const intptr_t nullID = 1;
JS_EXPORT_PRIVATE SourceProvider(const String& url, const TextPosition& startPosition);
JS_EXPORT_PRIVATE virtual ~SourceProvider();
virtual const String& source() const = 0;
String getRange(int start, int end) const
{
return source().substringSharingImpl(start, end - start);
}
const String& url() { return m_url; }
TextPosition startPosition() const { return m_startPosition; }
intptr_t asID()
{
ASSERT(this);
if (!this) return nullID;
if (!m_id)
getID();
return m_id;
}
bool isValid() const { return m_validated; }
void setValid() { m_validated = true; }
private:
JS_EXPORT_PRIVATE void getID();
Vector<size_t>& lineStarts();
String m_url;
TextPosition m_startPosition;
bool m_validated : 1;
uintptr_t m_id : sizeof(uintptr_t) * 8 - 1;
};
class StringSourceProvider : public SourceProvider {
public:
static PassRefPtr<StringSourceProvider> create(const String& source, const String& url, const TextPosition& startPosition = TextPosition::minimumPosition())
{
return adoptRef(new StringSourceProvider(source, url, startPosition));
}
virtual const String& source() const OVERRIDE
{
return m_source;
}
private:
StringSourceProvider(const String& source, const String& url, const TextPosition& startPosition)
: SourceProvider(url, startPosition)
, m_source(source)
{
}
String m_source;
};
}
#endif // SourceProvider_h