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/*
 * Copyright (c) 2002-2006 The TenDRA Project <http://www.tendra.org/>.
 * All rights reserved.
 *
 * 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 TenDRA Project 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 COPYRIGHT HOLDERS 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 COPYRIGHT HOLDERS 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.
 *
 * $Id$
 */
/*
                 Crown Copyright (c) 1997

    This TenDRA(r) Computer Program is subject to Copyright
    owned by the United Kingdom Secretary of State for Defence
    acting through the Defence Evaluation and Research Agency
    (DERA).  It is made available to Recipients with a
    royalty-free licence for its use, reproduction, transfer
    to other parties and amendment for any purpose not excluding
    product development provided that any such use et cetera
    shall be deemed to be acceptance of the following conditions:-

        (1) Its Recipients shall ensure that this Notice is
        reproduced upon any copies or amended versions of it;

        (2) Any amended version of it shall be clearly marked to
        show both the nature of and the organisation responsible
        for the relevant amendment or amendments;

        (3) Its onward transfer from a recipient to another
        party shall be deemed to be that party's acceptance of
        these conditions;

        (4) DERA gives no warranty or assurance as to its
        quality or suitability for any purpose and DERA accepts
        no liability whatsoever in relation to any use to which
        it may be put.
*/


#ifndef ERROR_INCLUDED
#define ERROR_INCLUDED


/*
    ERROR SEVERITY LEVELS

    These macros give the various error types recognised by the error
    routines.  Their values are in order of increasing severity.
*/

#define ERROR_WHATEVER          0
#define ERROR_NONE              1
#define ERROR_WARNING           2
#define ERROR_OPTION            3
#define ERROR_SERIOUS           4
#define ERROR_INTERNAL          5
#define ERROR_FATAL             6


/*
    ERROR ROUTINE DECLARATIONS

    The routines in this module are concerned with error reporting and
    related areas.
*/

extern ERROR make_error(int, ...);
extern void error(int, CONST char *, ...);
extern void set_progname(CONST char *, CONST char *);
extern string report_version(int);
extern void error_option(string);
extern void print_error(LOCATION *, ERROR);
extern EXP install_error(LOCATION *, ERROR);
extern void commentary(IDENTIFIER);
extern void destroy_error(ERROR, int);
extern ERROR concat_error(ERROR, ERROR);
extern ERROR concat_warning(ERROR, ERROR);
extern void add_error(ERROR *, ERROR);
extern void term_error(int);
extern ERROR set_prefix(ERROR);
extern void restore_prefix(ERROR);

#define report(A, B)    print_error(&(A), (B))
#define fail(A)         print_error(NIL(LOCATION), (A))
#define KILL_err        NIL(ERROR)


/*
    ERROR REPORTING VARIABLES

    These variables are used in the configuration of the error reporting
    routines.
*/

extern CONST char *progname;
extern CONST char *progvers;
extern int exit_status;
extern unsigned long number_errors;
extern unsigned long number_warnings;
extern unsigned long max_errors;
extern int error_severity[];
extern int default_severity[];
extern int verbose;
extern int error_threshold;
extern int no_error_args;
extern LOCATION crt_loc;
extern LOCATION builtin_loc;
extern FILE *error_file;


/*
    ASSERTION ROUTINE DECLARATIONS

    These macros are used to define assertions for aiding program
    development.  If the macro ASSERTS is defined then code for checking
    these assertions is output, otherwise the macros have no effect.
    Note that ASSERTS is automatically defined if DEBUG is (see config.h).
    FAIL_COMPILER is intended as an alternative to #error blows up some
    compilers even if it is not on the main compilation path.
*/

#ifdef ASSERTS
extern int is_true(int);
extern void assertion(CONST char *, CONST char *, int);
#if FS_STDC_HASH
#define ASSERT(A)       if (is_true(!(A)))\
                            assertion(#A, __FILE__, __LINE__)
#define FAIL(A)         assertion(#A, __FILE__, __LINE__)
#else
#define ASSERT(A)       if (is_true(!(A)))\
                            assertion("A", __FILE__, __LINE__)
#define FAIL(A)         assertion("A", __FILE__, __LINE__)
#endif
#else
#if FS_LINT
#define ASSERT(A)       /* empty */
#define FAIL(A)         /* empty */
#else
#define ASSERT(A)       (IGNORE 0)
#define FAIL(A)         (IGNORE 0)
#endif
#endif

#define FAIL_COMPILER   ERROR[!]


#endif