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#ifndef sorcerer_h
#define sorcerer_h
/*
* sorcerer.h -- header for all sorcerer files
*
* SOFTWARE RIGHTS
*
* We reserve no LEGAL rights to SORCERER -- SORCERER is in the public
* domain. An individual or company may do whatever they wish with
* source code distributed with SORCERER or the code generated by
* SORCERER, including the incorporation of SORCERER, or its output, into
* commerical software.
*
* We encourage users to develop software with SORCERER. However, we do
* ask that credit is given to us for developing SORCERER. 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 SORCERER and have developed a nice tool with the
* output, please mention that you developed it using SORCERER. 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.
*
* SORCERER 1.00B
* Terence Parr
* AHPCRC, University of Minnesota
* 1992-1994
*/
#include "pcctscfg.h"
#ifdef __USE_PROTOS
#include <stdlib.h>
#else
#include <malloc.h>
#endif
#include <setjmp.h>
/* SUPERCLASS SORAST (your tree must look at minimum like this)
typedef struct _node {
struct _node *right, *down;
int token;
-- user-defined stuff goes here
} SORAST;
*/
/* Can be used sort of like inheritance to get the desired struct def */
#define AST_REQD_FIELDS \
struct _node *right, *down; \
int token;
/* C MATCH */ /* MR21 Short circuit on null pointer */
#define _MATCH(tok) if (! _t || _t->token!=tok ) if ( _parser->guessing ) _GUESS_FAIL; else mismatched_token(_parser, tok, _t)
#define _MATCHRANGE(tok,tok2) \
if (! _t || _t->token<tok || _t->token>tok2 ) if ( _parser->guessing ) _GUESS_FAIL; else mismatched_range(_parser, tok, tok2, _t)
/* C++ MATCH */
#define _CPPMATCH(tok) if ( _t->token()!=tok ) if ( _parser->guessing ) _GUESS_FAIL; else mismatched_token(_parser, tok, _t)
#define _CPPMATCHRANGE(tok,tok2) \
if ( _t->token()<tok || _t->token()>tok2 ) if ( _parser->guessing ) _GUESS_FAIL; else mismatched_range(_parser, tok, tok2, _t)
/* Normal DOWN and RIGHT */
#define _DOWN _t=_t->down
#define _RIGHT _t=_t->right
/* C++ DOWN and RIGHT */
#define _CPPDOWN _t=(SORAST *) _t->down()
#define _CPPRIGHT _t=(SORAST *) _t->right()
#define _SAVE SORAST *_save=_t
#define _RESTORE _t = _save
#define _SETLABEL(u) u=_t
#define _WILDCARD if ( _t==NULL ) if ( _parser->guessing ) _GUESS_FAIL; else missing_wildcard(_parser)
#define _GUESS_BLOCK STreeParser _st; int _gv; SORAST *_savet=NULL;
#define _GUESS {_st = *_parser; \
_savet = _t; \
_parser->guessing = 1; \
_gv = setjmp(_parser->startofguess.state);}
#define _GUESS_FAIL longjmp(_parser->startofguess.state, 1)
#define _GUESS_DONE {*_parser = _st; _t = _savet;}
/* These are used mainly by the C output */
#ifndef ast_down
#define ast_down down
#endif
#ifndef ast_right
#define ast_right right
#endif
#define STreeTry(r,p,t) \
(p)->try_result = NULL; \
(p)->sjrv = setjmp((p)->startofguess); \
if ( !(p)->sjrv ) { \
rule(p,t,&try_result); \
(p)->try_ok = 1; \
} \
else { \
(p)->try_ok = 0; \
} \
if ( (p)->try_ok )
/* Used only during TRANSFORM mode */
#define TREE_CONSTR_PTRS SORAST *_r=NULL,*_s=NULL,*_e=NULL
typedef struct _Sjmp_buf {
jmp_buf state;
} Sjmp_buf;
#ifndef _PARSER_VARS
#define _PARSER_VARS
#endif
#ifndef _REFVARS
#define _REFVARS
#endif
typedef struct _STreeParser {
int try_ok, sjrv; /* used by STreeTry macro */
SORAST *try_result; /* tree coming back from try */
int guessing;
Sjmp_buf startofguess;
SORAST *t;
_REFVARS
_PARSER_VARS
} STreeParser;
#define STreeParserInit(_p) { (_p)->guessing = 0; _refvar_inits(_p); }
/* S a n i t y C h e c k i n g */
#ifndef require
#define require(expr, err) {if ( !(expr) ) sorcerer_panic(err);}
#endif
/* T r a n s f o r m M a c r o s */
#define ast_return(_t) *_result = _t
#ifdef __USE_PROTOS
extern void mismatched_range(STreeParser *_parser, int looking_for, int upper_token, SORAST *found);
extern void missing_wildcard(STreeParser *_parser);
extern void mismatched_token(STreeParser *_parser, int looking_for, SORAST *found);
extern void no_viable_alt(STreeParser *_parser, char *rulename, SORAST *root);
extern void sorcerer_panic(char *err);
extern void _refvar_inits(STreeParser *); /* MR15 Kevin J. Cummings */
extern void _mkroot(SORAST **, SORAST **, SORAST **, SORAST *);
extern void _mkchild(SORAST **, SORAST **, SORAST **, SORAST *);
extern SORAST *ast_alloc(void);
extern SORAST *ast_dup(SORAST *t);
extern SORAST *ast_dup_node(SORAST *t);
#else
extern void mismatched_range();
extern void missing_wildcard();
extern void mismatched_token();
extern void no_viable_alt();
extern void sorcerer_panic();
extern void _refvar_inits(); /* MR15 Kevin J. Cummings */
extern void _mkroot();
extern void _mkchild();
extern SORAST *ast_alloc();
extern SORAST *ast_dup();
extern SORAST *ast_dup_node();
#endif
#endif
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