NetBSD/gnu/usr.bin/awk/kw.c

84 lines
1.5 KiB
C

/********************************************
kw.c
copyright 1991, Michael D. Brennan
This is a source file for mawk, an implementation of
the AWK programming language.
Mawk is distributed without warranty under the terms of
the GNU General Public License, version 2, 1991.
********************************************/
/* $Log: kw.c,v $
/* Revision 1.2 1993/07/02 23:57:33 jtc
/* Updated to mawk 1.1.4
/*
* Revision 5.1 1991/12/05 07:56:12 brennan
* 1.1 pre-release
*
*/
/* kw.c */
#include "mawk.h"
#include "symtype.h"
#include "parse.h"
#include "init.h"
static struct kw {
char *text ;
short kw ;
} keywords[] = {
"print", PRINT,
"printf", PRINTF,
"do" , DO ,
"while" , WHILE ,
"for" , FOR ,
"break" , BREAK ,
"continue" , CONTINUE ,
"if" , IF ,
"else", ELSE ,
"in" , IN ,
"delete", DELETE ,
"split" , SPLIT ,
"match" , MATCH_FUNC ,
"BEGIN" , BEGIN,
"END" , END ,
"exit" , EXIT ,
"next" , NEXT ,
"return", RETURN,
"getline", GETLINE,
"sub" , SUB,
"gsub", GSUB,
"function", FUNCTION,
(char *) 0 , 0 } ;
/* put keywords in the symbol table */
void kw_init()
{ register struct kw *p = keywords ;
register SYMTAB *q ;
while ( p->text )
{ q = insert( p->text ) ;
q->type = ST_KEYWORD ;
q->stval.kw = p++ -> kw ;
}
}
/* find a keyword to emit an error message */
char *find_kw_str( kw_token )
int kw_token ;
{ struct kw *p ;
for( p = keywords ; p->text ; p++ )
if ( p->kw == kw_token ) return p->text ;
/* search failed */
return (char *) 0 ;
}