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// -*- C++ -*-
//=============================================================================
/**
* @file LocatorImpl.h
*
* $Id$
*
* @author Nanbor Wang <nanbor@cs.wustl.edu>
*/
//=============================================================================
#ifndef ACEXML_LOCALTORIMPL_H
#define ACEXML_LOCALTORIMPL_H
#include "common/Locator.h"
/**
* @class ACEXML_LocatorImpl LocatorImpl.h "common/LocatorImpl.h"
*
* @brief ACEXML_LocatorImpl is an implementation of ACEXML_Locator.
*
* This class is available mainly for application writers, who can
* use it to make a persistent snapshot of a locator at any point
* during a document parse:
*
* @code
* ACEXML_Locator locator;
* ACEXML_Locator startloc;
*
* public void setLocator (ACEXML_Locator locator)
* {
* // note the locator
* this.locator = locator;
* }
*
* public void startDocument ()
* {
* // save the location of the start of the document
* // for future use.
* ACEXML_Locator startloc = new ACEXML_LocatorImpl(locator);
* }
* @endcode
*
* Normally, parser writers will not use this class, since it is more
* efficient to provide location information only when requested,
* rather than constantly updating a Locator object.
*
* @todo ACEXML parser doesn't support the use of Locator yet.
*
* @sa ACEXML_Locator
*/
class ACEXML_Export ACEXML_LocatorImpl : public ACEXML_Locator
{
public:
/*
* Default constructor.
*/
ACEXML_LocatorImpl (void);
/*
* Copy constructor. Create a persistent copy of the current state
* of a locator. When the original locator changes, this copy will
* still keep the original values (and it can be used outside the
* scope of DocumentHandler methods).
*/
ACEXML_LocatorImpl (const ACEXML_Locator *locator);
/*
* Destructor.
*/
virtual ~ACEXML_LocatorImpl (void);
/*
* Return the column number where the current document event ends.
*/
virtual int getColumnNumber (void) const;
/*
* Return the line number where the current document event ends.
*/
virtual int getLineNumber (void) const;
/*
* Return the public identifier for the current document event.
*/
virtual const ACEXML_Char *getPublicId (void) const;
/*
* Return the system identifier for the current document event.
*/
virtual const ACEXML_Char *getSystemId (void) const;
/*
* Set the column number of this locator.
*/
void setColumnNumber (int cn);
/*
* Set the line number of this locator.
*/
void setLineNumber (int ln);
/*
* Set the public identifier of this locator.
*/
void setPublicId (const ACEXML_Char *id);
/*
* Set the system identifier of this locator.
*/
void setSystemId (const ACEXML_Char *id);
private:
ACEXML_Char *publicId_;
ACEXML_Char *systemId_;
int lineNumber_;
int columnNumber_;
};
#if defined (__ACEXML_INLINE__)
# include "common/LocatorImpl.i"
#endif /* __ACEXML_INLINE__ */
#endif /* ACEXML_LOCALTORIMPL_H */
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