1 static char *sccsid = "@(#)yyerror.c 1.2 (Berkeley) 05/11/83"; 2 /* Copyright (c) 1979 Regents of the University of California */ 3 /* 4 * pi - Pascal interpreter code translator 5 * 6 * Charles Haley, Bill Joy UCB 7 * Version 1.2 January 1979 8 * 9 * 10 * pxp - Pascal execution profiler 11 * 12 * Bill Joy UCB 13 * Version 1.2 January 1979 14 */ 15 16 #include "whoami.h" 17 #include "0.h" 18 #include "yy.h" 19 20 /* 21 * Yerror prints an error 22 * message and then returns 23 * NIL for the tree if needed. 24 * The error is flagged on the 25 * current line which is printed 26 * if the listing is turned off. 27 #ifdef PXP 28 * 29 * As is obvious from the fooling around 30 * with fout below, the Pascal system should 31 * be changed to use the new library "lS". 32 #endif 33 */ 34 yerror(s, a1, a2, a3, a4, a5) 35 char *s; 36 { 37 #ifdef PI 38 char buf[256]; 39 #endif 40 register int i, j; 41 static yySerrs; 42 #ifdef PXP 43 /* 44 int ofout; 45 */ 46 #endif 47 48 if (errpfx == 'w' && opt('w') != 0) 49 return; 50 #ifdef PXP 51 /* 52 flush(); 53 ofout = fout[0]; 54 fout[0] = errout; 55 */ 56 #endif 57 yyResume = 0; 58 #ifdef PI 59 geterr(s, buf); 60 s = buf; 61 #endif 62 yysync(); 63 putc(errpfx, stderr); 64 putc(' ', stderr); 65 for (i = 3; i < yyecol; i++) 66 putc('-', stderr); 67 fprintf(stderr, "^--- "); 68 /* 69 if (yyecol > 60) 70 printf("\n\t"); 71 */ 72 fprintf(stderr, s, a1, a2, a3, a4, a5); 73 putc('\n', stderr); 74 if (errpfx == 'E') 75 #ifdef PI 76 eflg++, cgenflg++; 77 #endif 78 #ifdef PXP 79 eflg++; 80 #endif 81 errpfx = 'E'; 82 yySerrs++; 83 if (yySerrs >= MAXSYNERR) { 84 yySerrs = 0; 85 yerror("Too many syntax errors - QUIT"); 86 pexit(ERRS); 87 } 88 #ifdef PXP 89 /* 90 flush(); 91 fout[0] = ofout; 92 */ 93 return (0); 94 #endif 95 } 96 97 /* 98 * A bracketing error message 99 */ 100 brerror(where, what) 101 int where; 102 char *what; 103 { 104 105 if (where == 0) { 106 line = yyeline; 107 setpfx(' '); 108 error("End matched %s on line %d", what, where); 109 return; 110 } 111 if (where < 0) 112 where = -where; 113 yerror("Inserted keyword end matching %s on line %d", what, where); 114 } 115