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rcsid[] and sccsid[] and copyright[] are essentially unmaintained (and
unmaintainable).  these days, people use source.  these id's do not provide
any benefit, and do hurt the small install media
(the 33,000 line diff is essentially mechanical)
ok with the idea millert, ok dms

/*	$OpenBSD: error.c,v 1.11 2009/10/27 23:59:50 deraadt Exp $	*/
/*	$NetBSD: error.c,v 1.4 1996/03/19 03:21:32 jtc Exp $	*/

/*
 * 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, 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. 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.
 */

/* routines for printing error messages  */

#include "defs.h"


void
fatal(char *msg)
{
    fprintf(stderr, "%s: %s\n", input_file_name, msg);
    done(2);
}


void
no_space(void)
{
    fprintf(stderr, "%s: yacc is out of space\n", input_file_name);
    done(2);
}


void
open_error(char *filename)
{
    fprintf(stderr, "%s: cannot open source file\n", input_file_name);
    done(2);
}

void
open_write_error(char *filename)
{
    fprintf(stderr, "%s: cannot open target file %s for writing\n",
	input_file_name, filename);
    done(2);
}

void
unexpected_EOF(void)
{
    fprintf(stderr, "%s:%d: unexpected end-of-file\n",
	    input_file_name, lineno);
    done(1);
}


void
print_pos(char *st_line, char *st_cptr)
{
    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);
}

void
syntax_error(int st_lineno, char *st_line, char *st_cptr)
{
    fprintf(stderr, "%s:%d: syntax error\n",
	    input_file_name, st_lineno);
    print_pos(st_line, st_cptr);
    done(1);
}

void
unterminated_comment(int c_lineno, char *c_line, char *c_cptr)
{
    fprintf(stderr, "%s:%d: unmatched /*\n",
	    input_file_name, c_lineno);
    print_pos(c_line, c_cptr);
    done(1);
}

void
unterminated_string(int s_lineno, char *s_line, char *s_cptr)
{
    fprintf(stderr, "%s:%d:, unterminated string\n",
	    input_file_name, s_lineno);
    print_pos(s_line, s_cptr);
    done(1);
}

void
unterminated_text(int t_lineno, char *t_line, char *t_cptr)
{
    fprintf(stderr, "%s:%d: unmatched %%{\n",
	    input_file_name, t_lineno);
    print_pos(t_line, t_cptr);
    done(1);
}

void
unterminated_union(int u_lineno, char *u_line, char *u_cptr)
{
    fprintf(stderr, "%s:%d: unterminated %%union declaration\n",
	    input_file_name, u_lineno);
    print_pos(u_line, u_cptr);
    done(1);
}

void
over_unionized(char *u_cptr)
{
    fprintf(stderr, "%s:%d: too many %%union declarations\n",
	    input_file_name, lineno);
    print_pos(line, u_cptr);
    done(1);
}

void
illegal_tag(int t_lineno, char *t_line, char *t_cptr)
{
    fprintf(stderr, "%s:%d: illegal tag\n",
	    input_file_name, t_lineno);
    print_pos(t_line, t_cptr);
    done(1);
}


void
illegal_character(char *c_cptr)
{
    fprintf(stderr, "%s:%d: illegal character\n",
	    input_file_name, lineno);
    print_pos(line, c_cptr);
    done(1);
}


void
used_reserved(char *s)
{
    fprintf(stderr, "%s:%d: illegal use of reserved symbol %s\n",
	    input_file_name, lineno, s);
    done(1);
}

void
tokenized_start(char *s)
{
     fprintf(stderr, "%s:%d: the start symbol %s cannot be declared to be a token\n",
	    input_file_name, lineno, s);
     done(1);
}

void
retyped_warning(char *s)
{
    fprintf(stderr, "%s:%d: the type of %s has been redeclared\n",
	    input_file_name, lineno, s);
}

void
reprec_warning(char *s)
{
    fprintf(stderr, "%s:%d: the precedence of %s has been redeclared\n",
	    input_file_name, lineno, s);
}

void
revalued_warning(char *s)
{
    fprintf(stderr, "%s:%d: the value of %s has been redeclared\n",
	    input_file_name, lineno, s);
}

void
terminal_start(char *s)
{
    fprintf(stderr, "%s:%d: the start symbol %s is a token\n",
	    input_file_name, lineno, s);
    done(1);
}

void
restarted_warning(void)
{
    fprintf(stderr, "%s:%d: the start symbol has been redeclared\n",
	     input_file_name, lineno);
}

void
no_grammar(void)
{
    fprintf(stderr, "%s:%d: no grammar has been specified\n",
	    input_file_name, lineno);
    done(1);
}

void
terminal_lhs(int s_lineno)
{
    fprintf(stderr, "%s:%d: a token appears on the lhs of a production\n",
	    input_file_name, s_lineno);
    done(1);
}

void
prec_redeclared(void)
{
    fprintf(stderr, "%s:%d: conflicting %%prec specifiers\n",
	    input_file_name, lineno);
}

void
unterminated_action(int a_lineno, char *a_line, char *a_cptr)
{
    fprintf(stderr, "%s:%d: unterminated action\n",
	    input_file_name, a_lineno);
    print_pos(a_line, a_cptr);
    done(1);
}

void
dollar_warning(int a_lineno, int i)
{
    fprintf(stderr, "%s:%d: $%d references beyond the end of the current rule\n",
	    input_file_name, a_lineno, i);
}

void
dollar_error(int a_lineno, char *a_line, char *a_cptr)
{
    fprintf(stderr, "%s:%d: illegal $-name\n",
	    input_file_name, a_lineno);
    print_pos(a_line, a_cptr);
    done(1);
}


void
untyped_lhs(void)
{
    fprintf(stderr, "%s:%d: $$ is untyped\n",
	    input_file_name, lineno);
    done(1);
}

void
untyped_rhs(int i, char *s)
{
    fprintf(stderr, "%s:%d: $%d (%s) is untyped\n",
	    input_file_name, lineno, i, s);
    done(1);
}

void
unknown_rhs(int i)
{
    fprintf(stderr, "%s:%d: $%d is untyped\n",
	    input_file_name, lineno, i);
    done(1);
}

void
default_action_warning(void)
{
    fprintf(stderr, "%s:%d: the default action assigns an undefined value to $$\n",
	    input_file_name, lineno);
}

void
undefined_goal(char *s)
{
    fprintf(stderr, "%s: the start symbol %s is undefined\n", input_file_name, s);
    done(1);
}

void
undefined_symbol_warning(char *s)
{
    fprintf(stderr, "%s: the symbol %s is undefined\n", input_file_name, s);
}