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- /*-
- * Copyright (c) 1980 The Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
- #ifndef lint
- static char sccsid[] = "@(#)yyprint.c 5.2 (Berkeley) 4/16/91";
- #endif /* not lint */
-
- #include "whoami.h"
- #include "0.h"
- #include "tree_ty.h" /* must be included for yy.h */
- #include "yy.h"
-
- char *tokname();
-
- STATIC short bounce;
-
- /*
- * Printing representation of a
- * "character" - a lexical token
- * not in a yytok structure.
- * 'which' indicates which char * you want
- * should always be called as "charname(...,0),charname(...,1)"
- */
- char *
- charname(ch , which )
- int ch;
- int which;
- {
- struct yytok Ych;
-
- Ych.Yychar = ch;
- Ych.Yylval = nullsem(ch);
- return (tokname(&Ych , which ));
- }
-
- /*
- * Printing representation of a token
- * 'which' as above.
- */
- char *
- tokname(tp , which )
- register struct yytok *tp;
- int which;
- {
- register char *cp;
- register struct kwtab *kp;
- char *cp2;
-
- cp2 = "";
- switch (tp->Yychar) {
- case YCASELAB:
- cp = "case-label";
- break;
- case YEOF:
- cp = "end-of-file";
- break;
- case YILLCH:
- cp = "illegal character";
- break;
- case 256:
- /* error token */
- cp = "error";
- break;
- case YID:
- cp = "identifier";
- break;
- case YNUMB:
- cp = "real number";
- break;
- case YINT:
- case YBINT:
- cp = "number";
- break;
- case YSTRING:
- cp = (char *) tp->Yylval;
- cp = cp == NIL || cp[1] == 0 ? "character" : "string";
- break;
- case YDOTDOT:
- cp = "'..'";
- break;
- default:
- if (tp->Yychar < 256) {
- cp = "'x'\0'x'\0'x'\0'x'";
- /*
- * for four times reentrant code!
- * used to be:
- * if (bounce = ((bounce + 1) & 1))
- * cp += 4;
- */
- bounce = ( bounce + 1 ) % 4;
- cp += (4 * bounce); /* 'x'\0 is 4 chars */
- cp[1] = tp->Yychar;
- break;
- }
- for (kp = yykey; kp->kw_str != NIL && kp->kw_val != tp->Yychar; kp++)
- continue;
- cp = "keyword ";
- cp2 = kp->kw_str;
- }
- return ( which ? cp2 : cp );
- }
-