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[/] [eco32/] [trunk/] [lcc/] [src/] [error.c] - Rev 157
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#include "c.h" static char rcsid[] = "$Id: error.c,v 1.1 2002/08/28 23:12:43 drh Exp $"; static void printtoken(void); int errcnt = 0; int errlimit = 20; char kind[] = { #define xx(a,b,c,d,e,f,g) f, #define yy(a,b,c,d,e,f,g) f, #include "token.h" }; int wflag; /* != 0 to suppress warning messages */ void test(int tok, char set[]) { if (t == tok) t = gettok(); else { expect(tok); skipto(tok, set); if (t == tok) t = gettok(); } } void expect(int tok) { if (t == tok) t = gettok(); else { error("syntax error; found"); printtoken(); fprint(stderr, " expecting `%k'\n", tok); } } void error(const char *fmt, ...) { va_list ap; if (errcnt++ >= errlimit) { errcnt = -1; error("too many errors\n"); exit(1); } va_start(ap, fmt); if (firstfile != file && firstfile && *firstfile) fprint(stderr, "%s: ", firstfile); fprint(stderr, "%w: ", &src); vfprint(stderr, NULL, fmt, ap); va_end(ap); } void skipto(int tok, char set[]) { int n; char *s; assert(set); for (n = 0; t != EOI && t != tok; t = gettok()) { for (s = set; *s && kind[t] != *s; s++) ; if (kind[t] == *s) break; if (n++ == 0) error("skipping"); if (n <= 8) printtoken(); else if (n == 9) fprint(stderr, " ..."); } if (n > 8) { fprint(stderr, " up to"); printtoken(); } if (n > 0) fprint(stderr, "\n"); } /* fatal - issue fatal error message and exit */ int fatal(const char *name, const char *fmt, int n) { print("\n"); errcnt = -1; error("compiler error in %s--", name); fprint(stderr, fmt, n); exit(EXIT_FAILURE); return 0; } /* printtoken - print current token preceeded by a space */ static void printtoken(void) { switch (t) { case ID: fprint(stderr, " `%s'", token); break; case ICON: fprint(stderr, " `%s'", vtoa(tsym->type, tsym->u.c.v)); break; case SCON: { int i, n; if (ischar(tsym->type->type)) { char *s = tsym->u.c.v.p; n = tsym->type->size; fprint(stderr, " \""); for (i = 0; i < 20 && i < n && *s; s++, i++) if (*s < ' ' || *s >= 0177) fprint(stderr, "\\%o", *s); else fprint(stderr, "%c", *s); } else { /* wchar_t string */ unsigned int *s = tsym->u.c.v.p; assert(tsym->type->type->size == widechar->size); n = tsym->type->size/widechar->size; fprint(stderr, " L\""); for (i = 0; i < 20 && i < n && *s; s++, i++) if (*s < ' ' || *s >= 0177) fprint(stderr, "\\x%x", *s); else fprint(stderr, "%c", *s); } if (i < n) fprint(stderr, " ..."); else fprint(stderr, "\""); break; } case FCON: fprint(stderr, " `%S'", token, (char*)cp - token); break; case '`': case '\'': fprint(stderr, " \"%k\"", t); break; default: fprint(stderr, " `%k'", t); } } /* warning - issue warning error message */ void warning(const char *fmt, ...) { va_list ap; va_start(ap, fmt); if (wflag == 0) { errcnt--; error("warning: "); vfprint(stderr, NULL, fmt, ap); } va_end(ap); }
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