BSD 4_1c_2 release

[unix-history] / usr / lib / yaccpar

diff --git a/usr/lib/yaccpar b/usr/lib/yaccpar
old mode 100644 (file)
new mode 100755 (executable)
index 25e5c7a..a3c3e6a
--- a/usr/lib/yaccpar
+++ b/usr/lib/yaccpar
@@ -1,3 +1,7 @@
+#ifndef lint
+static char yaccpar_sccsid[] = "@(#)yaccpar    4.1     (Berkeley)      2/11/83";
+#endif not lint
+

 #
 # define YYFLAG -1000
 # define YYERROR goto yyerrlab
 #
 # define YYFLAG -1000
 # define YYERROR goto yyerrlab


@@ -6,7 +10,9 @@
 
 /*     parser for yacc output  */
 
 
 /*     parser for yacc output  */
 

+#ifdef YYDEBUG

 int yydebug = 0; /* 1 for debugging */
 int yydebug = 0; /* 1 for debugging */

+#endif

 YYSTYPE yyv[YYMAXDEPTH]; /* where the values are stored */
 int yychar = -1; /* current input token number */
 int yynerrs = 0;  /* number of errors */
 YYSTYPE yyv[YYMAXDEPTH]; /* where the values are stored */
 int yychar = -1; /* current input token number */
 int yynerrs = 0;  /* number of errors */


@@ -30,7 +36,9 @@ yyparse() {
 
  yystack:    /* put a state and value onto the stack */
 
 
  yystack:    /* put a state and value onto the stack */
 

+#ifdef YYDEBUG

        if( yydebug  ) printf( "state %d, char 0%o\n", yystate, yychar );
        if( yydebug  ) printf( "state %d, char 0%o\n", yystate, yychar );

+#endif

                if( ++yyps> &yys[YYMAXDEPTH] ) { yyerror( "yacc stack overflow" ); return(1); }
                *yyps = yystate;
                ++yypv;
                if( ++yyps> &yys[YYMAXDEPTH] ) { yyerror( "yacc stack overflow" ); return(1); }
                *yyps = yystate;
                ++yypv;


@@ -96,7 +104,9 @@ yyparse() {
 
                           /* the current yyps has no shift onn "error", pop stack */
 
 
                           /* the current yyps has no shift onn "error", pop stack */
 

+#ifdef YYDEBUG

                           if( yydebug ) printf( "error recovery pops state %d, uncovers %d\n", *yyps, yyps[-1] );
                           if( yydebug ) printf( "error recovery pops state %d, uncovers %d\n", *yyps, yyps[-1] );

+#endif

                           --yyps;
                           --yypv;
                           }
                           --yyps;
                           --yypv;
                           }


@@ -109,7 +119,9 @@ yyparse() {
 
                case 3:  /* no shift yet; clobber input char */
 
 
                case 3:  /* no shift yet; clobber input char */
 

+#ifdef YYDEBUG

                        if( yydebug ) printf( "error recovery discards char %d\n", yychar );
                        if( yydebug ) printf( "error recovery discards char %d\n", yychar );

+#endif

 
                        if( yychar == 0 ) goto yyabort; /* don't discard EOF, quit */
                        yychar = -1;
 
                        if( yychar == 0 ) goto yyabort; /* don't discard EOF, quit */
                        yychar = -1;


@@ -121,7 +133,9 @@ yyparse() {
 
        /* reduction by production yyn */
 
 
        /* reduction by production yyn */
 

+#ifdef YYDEBUG

                if( yydebug ) printf("reduce %d\n",yyn);
                if( yydebug ) printf("reduce %d\n",yyn);

+#endif

                yyps -= yyr2[yyn];
                yypvt = yypv;
                yypv -= yyr2[yyn];
                yyps -= yyr2[yyn];
                yypvt = yypv;
                yypv -= yyr2[yyn];