date and time created 89/12/25 14:24:29 by bostic

SCCS-vsn: usr.bin/yacc/error.c 5.1

diff --git a/usr/src/usr.bin/yacc/error.c b/usr/src/usr.bin/yacc/error.c
new file mode 100644 (file)
index 0000000..3b5a6f2
--- /dev/null
+++ b/usr/src/usr.bin/yacc/error.c
@@ -0,0 +1,342 @@
+/*
+ * Copyright (c) 1989 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Robert Paul Corbett.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that the above copyright notice and this paragraph are
+ * duplicated in all such forms and that any documentation,
+ * advertising materials, and other materials related to such
+ * distribution and use acknowledge that the software was developed
+ * by the University of California, Berkeley.  The name of the
+ * University may not be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)error.c    5.1 (Berkeley) %G%";
+#endif /* not lint */
+
+/* routines for printing error messages  */
+
+#include "defs.h"
+
+
+fatal(msg)
+char *msg;
+{
+    fprintf(stderr, "%s: f - %s\n", myname, msg);
+    done(2);
+}
+
+
+no_space()
+{
+    abort();
+    fprintf(stderr, "%s: f - out of space\n", myname);
+    done(2);
+}
+
+
+open_error(filename)
+char *filename;
+{
+    fprintf(stderr, "%s: f - cannot open \"%s\"\n", myname, filename);
+    done(2);
+}
+
+
+unexpected_EOF()
+{
+    fprintf(stderr, "%s: e - line %d of \"%s\", unexpected end-of-file\n",
+           myname, lineno, input_file_name);
+    done(1);
+}
+
+
+print_pos(st_line, st_cptr)
+char *st_line;
+char *st_cptr;
+{
+    register char *s;
+
+    if (st_line == 0) return;
+    for (s = st_line; *s != '\n'; ++s)
+    {
+       if (isprint(*s) || *s == '\t')
+           putc(*s, stderr);
+       else
+           putc('?', stderr);
+    }
+    putc('\n', stderr);
+    for (s = st_line; s < st_cptr; ++s)
+    {
+       if (*s == '\t')
+           putc('\t', stderr);
+       else
+           putc(' ', stderr);
+    }
+    putc('^', stderr);
+    putc('\n', stderr);
+}
+
+
+syntax_error(st_lineno, st_line, st_cptr)
+int st_lineno;
+char *st_line;
+char *st_cptr;
+{
+    fprintf(stderr, "%s: e - line %d of \"%s\", syntax error\n",
+           myname, st_lineno, input_file_name);
+    print_pos(st_line, st_cptr);
+    done(1);
+}
+
+
+unterminated_comment(c_lineno, c_line, c_cptr)
+int c_lineno;
+char *c_line;
+char *c_cptr;
+{
+    fprintf(stderr, "%s: e - line %d of \"%s\", unmatched /*\n",
+           myname, c_lineno, input_file_name);
+    print_pos(c_line, c_cptr);
+    done(1);
+}
+
+
+unterminated_string(s_lineno, s_line, s_cptr)
+int s_lineno;
+char *s_line;
+char *s_cptr;
+{
+    fprintf(stderr, "%s: e - line %d of \"%s\", unterminated string\n",
+           myname, s_lineno, input_file_name);
+    print_pos(s_line, s_cptr);
+    done(1);
+}
+
+
+unterminated_text(t_lineno, t_line, t_cptr)
+int t_lineno;
+char *t_line;
+char *t_cptr;
+{
+    fprintf(stderr, "%s: e - line %d of \"%s\", unmatched %%{\n",
+           myname, t_lineno, input_file_name);
+    print_pos(t_line, t_cptr);
+    done(1);
+}
+
+
+unterminated_union(u_lineno, u_line, u_cptr)
+int u_lineno;
+char *u_line;
+char *u_cptr;
+{
+    fprintf(stderr, "%s: e - line %d of \"%s\", unterminated %%union \
+declaration\n", myname, u_lineno, input_file_name);
+    print_pos(u_line, u_cptr);
+    done(1);
+}
+
+
+over_unionized(u_cptr)
+char *u_cptr;
+{
+    fprintf(stderr, "%s: e - line %d of \"%s\", too many %%union \
+declarations\n", myname, lineno, input_file_name);
+    print_pos(line, u_cptr);
+    done(1);
+}
+
+
+illegal_tag(t_lineno, t_line, t_cptr)
+int t_lineno;
+char *t_line;
+char *t_cptr;
+{
+    fprintf(stderr, "%s: e - line %d of \"%s\", illegal tag\n",
+           myname, t_lineno, input_file_name);
+    print_pos(t_line, t_cptr);
+    done(1);
+}
+
+
+illegal_character(c_cptr)
+char *c_cptr;
+{
+    fprintf(stderr, "%s: e - line %d of \"%s\", illegal character\n",
+           myname, lineno, input_file_name);
+    print_pos(line, c_cptr);
+    done(1);
+}
+
+
+used_reserved(s)
+char *s;
+{
+    fprintf(stderr, "%s: e - line %d of \"%s\", illegal use of reserved symbol \
+%s\n", myname, lineno, input_file_name, s);
+    done(1);
+}
+
+
+tokenized_start(s)
+char *s;
+{
+     fprintf(stderr, "%s: e - line %d of \"%s\", the start symbol %s cannot be \
+declared to be a token\n", myname, lineno, input_file_name, s);
+     done(1);
+}
+
+
+retyped_warning(s)
+char *s;
+{
+    fprintf(stderr, "%s: w - line %d of \"%s\", the type of %s has been \
+redeclared\n", myname, lineno, input_file_name, s);
+}
+
+
+reprec_warning(s)
+char *s;
+{
+    fprintf(stderr, "%s: w - line %d of \"%s\", the precedence of %s has been \
+redeclared\n", myname, lineno, input_file_name, s);
+}
+
+
+revalued_warning(s)
+char *s;
+{
+    fprintf(stderr, "%s: w - line %d of \"%s\", the value of %s has been \
+redeclared\n", myname, lineno, input_file_name, s);
+}
+
+
+terminal_start(s)
+char *s;
+{
+    fprintf(stderr, "%s: e - line %d of \"%s\", the start symbol %s is a \
+token\n", myname, lineno, input_file_name, s);
+    done(1);
+}
+
+
+restarted_warning()
+{
+    fprintf(stderr, "%s: w - line %d of \"%s\", the start symbol has been \
+redeclared\n", myname, lineno, input_file_name);
+}
+
+
+no_grammar()
+{
+    fprintf(stderr, "%s: e - line %d of \"%s\", no grammar has been \
+specified\n", myname, lineno, input_file_name);
+    done(1);
+}
+
+
+terminal_lhs(s_lineno)
+int s_lineno;
+{
+    fprintf(stderr, "%s: e - line %d of \"%s\", a token appears on the lhs \
+of a production\n", myname, s_lineno, input_file_name);
+    done(1);
+}
+
+
+prec_redeclared()
+{
+    fprintf(stderr, "%s: w - line %d of  \"%s\", conflicting %%prec \
+specifiers\n", myname, lineno, input_file_name);
+}
+
+
+unterminated_action(a_lineno, a_line, a_cptr)
+int a_lineno;
+char *a_line;
+char *a_cptr;
+{
+    fprintf(stderr, "%s: e - line %d of \"%s\", unterminated action\n",
+           myname, a_lineno, input_file_name);
+    print_pos(a_line, a_cptr);
+    done(1);
+}
+
+
+dollar_warning(a_lineno, i)
+int a_lineno;
+int i;
+{
+    fprintf(stderr, "%s: w - line %d of \"%s\", $%d references beyond the \
+end of the current rule\n", myname, a_lineno, input_file_name, i);
+}
+
+
+dollar_error(a_lineno, a_line, a_cptr)
+int a_lineno;
+char *a_line;
+char *a_cptr;
+{
+    fprintf(stderr, "%s: e - line %d of \"%s\", illegal $-name\n",
+           myname, a_lineno, input_file_name);
+    print_pos(a_line, a_cptr);
+    done(1);
+}
+
+
+untyped_lhs()
+{
+    fprintf(stderr, "%s: e - line %d of \"%s\", $$ is untyped\n",
+           myname, lineno, input_file_name);
+    done(1);
+}
+
+
+untyped_rhs(i, s)
+int i;
+char *s;
+{
+    fprintf(stderr, "%s: e - line %d of \"%s\", $%d (%s) is untyped\n",
+           myname, lineno, input_file_name, i, s);
+    done(1);
+}
+
+
+unknown_rhs(i)
+int i;
+{
+    fprintf(stderr, "%s: e - line %d of \"%s\", $%d is untyped\n",
+           myname, lineno, input_file_name, i);
+    done(1);
+}
+
+
+default_action_warning()
+{
+    fprintf(stderr, "%s: w - line %d of \"%s\", the default action assigns an \
+undefined value to $$\n", myname, lineno, input_file_name);
+}
+
+
+undefined_goal(s)
+char *s;
+{
+    fprintf(stderr, "%s: e - the start symbol %s is undefined\n", myname, s);
+    done(1);
+}
+
+
+undefined_symbol_warning(s)
+char *s;
+{
+    fprintf(stderr, "%s: w - the symbol %s is undefined\n", myname, s);
+}