www.pudn.com > pccts133.zip > AToken_traditional.h
/* ANTLRToken.h
*
* SOFTWARE RIGHTS
*
* We reserve no LEGAL rights to the Purdue Compiler Construction Tool
* Set (PCCTS) -- PCCTS is in the public domain. An individual or
* company may do whatever they wish with source code distributed with
* PCCTS or the code generated by PCCTS, including the incorporation of
* PCCTS, or its output, into commerical software.
*
* We encourage users to develop software with PCCTS. However, we do ask
* that credit is given to us for developing PCCTS. By "credit",
* we mean that if you incorporate our source code into one of your
* programs (commercial product, research project, or otherwise) that you
* acknowledge this fact somewhere in the documentation, research report,
* etc... If you like PCCTS and have developed a nice tool with the
* output, please mention that you developed it using PCCTS. In
* addition, we ask that this header remain intact in our source code.
* As long as these guidelines are kept, we expect to continue enhancing
* this system and expect to make other tools available as they are
* completed.
*
* ANTLR 1.33
* Terence Parr
* Parr Research Corporation
* with Purdue University and AHPCRC, University of Minnesota
* 1989-1998
*/
#ifndef ATOKEN_H_GATE
#define ATOKEN_H_GATE
#include "pcctscfg.h"
#include PCCTS_STRING_H
#include PCCTS_STDIO_H
#include PCCTS_STDLIB_H
PCCTS_NAMESPACE_STD
#ifndef ANTLRCommonTokenTEXTSIZE
#define ANTLRCommonTokenTEXTSIZE 100
#endif
/* must define what a char looks like; can make this a class too */
typedef char ANTLRChar;
/* D E F I N E S M A R T P O I N T E R S */
#include "pcctscfg.h"
//#include ATOKPTR_H not tested yet, leave out
class ANTLRAbstractToken;
typedef ANTLRAbstractToken *_ANTLRTokenPtr;
class DllExportPCCTS ANTLRAbstractToken {
public:
virtual ~ANTLRAbstractToken() {;}
virtual ANTLRTokenType getType() = 0;
virtual void setType(ANTLRTokenType t) = 0;
virtual int getLine() = 0;
virtual void setLine(int line) = 0;
virtual ANTLRChar *getText() = 0;
virtual void setText(ANTLRChar *) = 0;
/* This function will disappear when I can use templates */
virtual ANTLRAbstractToken *makeToken(ANTLRTokenType tt,
ANTLRChar *text,
int line) = 0;
/* define to satisfy ANTLRTokenBuffer's need to determine whether or
not a token object can be destroyed. If nref()==0, no one has
a reference, and the object may be destroyed. This function defaults
to 1, hence, if you use deleteTokens() message with a token object
not derived from ANTLRCommonRefCountToken, the parser will compile
but will not delete objects after they leave the token buffer.
*/
virtual unsigned nref() { return 1; }
virtual void ref() {;}
virtual void deref() {;}
virtual void panic(char *msg)
{
fprintf(stderr, "ANTLRAbstractToken panic: %s\n", msg);
exit(PCCTS_EXIT_FAILURE);
}
};
/* This class should be subclassed. It cannot store token type or text */
class DllExportPCCTS ANTLRRefCountToken : public ANTLRAbstractToken {
public:
#ifdef DBG_REFCOUNTTOKEN
static int ctor;
static int dtor;
#endif
protected:
unsigned refcnt_;
#ifdef DBG_REFCOUNTTOKEN
char object[200];
#endif
public:
ANTLRRefCountToken(ANTLRTokenType t, ANTLRChar *s)
#ifndef DBG_REFCOUNTTOKEN
{
refcnt_ = 0;
}
#else
{
ctor++;
refcnt_ = 0;
if ( t==1 ) sprintf(object,"tok_EOF");
else sprintf(object,"tok_%s",s);
fprintf(stderr, "ctor %s #%d\n",object,ctor);
}
#endif
ANTLRRefCountToken()
#ifndef DBG_REFCOUNTTOKEN
{ refcnt_ = 0; }
#else
{
ctor++;
refcnt_ = 0;
sprintf(object,"tok_blank");
fprintf(stderr, "ctor %s #%d\n",object,ctor);
}
virtual ~ANTLRRefCountToken()
{
dtor++;
if ( dtor>ctor ) fprintf(stderr, "WARNING: dtor>ctor\n");
fprintf(stderr, "dtor %s #%d\n", object, dtor);
object[0]='\0';
}
#endif
// reference counting stuff needed by ANTLRTokenPtr.
// User should not access these; for C++ language reasons, we had
// to make these public. Yuck.
void ref() { refcnt_++; }
void deref() { refcnt_--; }
unsigned nref() { return refcnt_; }
virtual ANTLRAbstractToken *makeToken(ANTLRTokenType tt,
ANTLRChar *txt,
int line)
{
panic("call to ANTLRRefCountToken::makeToken()\n");
return NULL;
}
};
class DllExportPCCTS ANTLRCommonNoRefCountToken : public ANTLRAbstractToken {
protected:
ANTLRTokenType _type;
int _line;
ANTLRChar _text[ANTLRCommonTokenTEXTSIZE+1];
public:
ANTLRCommonNoRefCountToken(ANTLRTokenType t, ANTLRChar *s)
{ setType(t); _line = 0; setText(s); }
ANTLRCommonNoRefCountToken()
{ setType((ANTLRTokenType)0); _line = 0; setText(""); }
ANTLRTokenType getType() { return _type; }
void setType(ANTLRTokenType t) { _type = t; }
virtual int getLine() { return _line; }
void setLine(int line) { _line = line; }
ANTLRChar *getText() { return _text; }
void setText(ANTLRChar *s)
{ strncpy((char *)_text, (char *)s, ANTLRCommonTokenTEXTSIZE); }
virtual ANTLRAbstractToken *makeToken(ANTLRTokenType tt,
ANTLRChar *txt,
int line)
{
ANTLRAbstractToken *t = new ANTLRCommonNoRefCountToken;
t->setType(tt); t->setText(txt); t->setLine(line);
return t;
}
};
class DllExportPCCTS ANTLRCommonToken : public ANTLRRefCountToken {
protected:
ANTLRTokenType _type;
int _line;
ANTLRChar _text[ANTLRCommonTokenTEXTSIZE+1];
public:
ANTLRCommonToken(ANTLRTokenType t, ANTLRChar *s) : ANTLRRefCountToken(t,s)
{ setType(t); _line = 0; setText(s); }
ANTLRCommonToken()
{ setType((ANTLRTokenType)0); _line = 0; setText(""); }
virtual ~ANTLRCommonToken() {;}
ANTLRTokenType getType() { return _type; }
void setType(ANTLRTokenType t) { _type = t; }
virtual int getLine() { return _line; }
void setLine(int line) { _line = line; }
ANTLRChar *getText() { return _text; }
void setText(ANTLRChar *s)
{ strncpy((char *)_text, (char *)s, ANTLRCommonTokenTEXTSIZE); }
virtual ANTLRAbstractToken *makeToken(ANTLRTokenType tt,
ANTLRChar *txt,
int line)
{
ANTLRAbstractToken *t = new ANTLRCommonToken(tt,txt);
t->setLine(line);
return t;
}
};
// used for backward compatibility
typedef ANTLRCommonToken ANTLRCommonBacktrackingToken;
#endif