/ray/src/lib/lex/location.h

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/*
 * lib/lex/location.h
 * 
 * Source code location (file/line) representation. 
 * 
 * Copyright (c) 2003--2004 by Wolfgang Wieser ] wwieser (a) gmx <*> de [ 
 * 
 * This file may be distributed and/or modified under the terms of the 
 * GNU General Public License version 2 as published by the Free Software 
 * Foundation. (See COPYING.GPL for details.)
 * 
 * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
 * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 * 
 */

#ifndef _LIB_LEX_LOCATION_H_
#define _LIB_LEX_LOCATION_H_ 1

#include <lib/sconfig.h>    /* MUST be first */

#include <lib/sourcepos/sourcepos.h>


class SCLocationRange;

struct /*_packed_*/ SCLocation  /* C++ save */
{
    friend class SCLocationRange;
    
    enum _NullLoc { NullLoc };
    
    SourcePosition pos;
    
    inline SCLocation(_NullLoc = NullLoc) : pos()  {}
    inline SCLocation(const SourcePosition &p) : pos(p)  {}
    inline SCLocation(const SCLocation &loc) : pos(loc.pos)  {}
    SCLocation(const TLString &path,int line=-1,int lpos=-1);
    inline ~SCLocation() {}
    
    inline SCLocation &operator=(const SCLocation &loc)
        {  pos=loc.pos;  return(*this);  }
    inline SCLocation &operator=(_NullLoc)
        {  pos=SourcePosition();  return(*this);  }
    
    inline bool operator!() const
        {  return(!pos);  }
    inline operator bool() const
        {  return(pos.operator bool());  }
    
    inline TLString path() const
        {  return(pos->path());  }
    inline int line() const
        {  return(pos->line());  }
    inline int lpos() const
        {  return(pos->lpos());  }
    
    TLString LocString(int with_inc_hierarchy=0) const;
    
    TLString RelString(const SCLocation &rloc) const;
    
};


struct SCLocationRange  /* C++ save */
{
    enum _NullRange { NullRange };
    
    SCLocation loc0;   
    SCLocation loc1;   
    
    inline SCLocationRange(_NullRange = NullRange) : 
        loc0(SCLocation::NullLoc),loc1(SCLocation::NullLoc)  {}
    inline SCLocationRange(const SCLocation &a,const SCLocation &b) : 
        loc0(a),loc1(b)  {}
    inline SCLocationRange(const SCLocationRange &r) : 
        loc0(r.loc0),loc1(r.loc1)  {}
    inline ~SCLocationRange() {}
    
    inline SCLocationRange &operator=(const SCLocationRange &r)
        {  loc0=r.loc0;  loc1=r.loc1;  return(*this);  }
    inline SCLocationRange &operator=(_NullRange)
        { loc0=SCLocation::NullLoc; loc1=SCLocation::NullLoc;  return(*this); }
    
    inline bool operator!() const
        {  return(!loc0 && !loc1);  }
    inline operator bool() const
        {  return(loc0 || loc1);  }
    
    TLString RangeString(int with_files=1) const;
    
    TLString RelString(const SCLocationRange &rloc) const;
    
    TLString RelString(const SCLocation &rloc) const;
};

#endif  /* _LIB_LEX_LOCATION_H_ */

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