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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 FUNCTION_INCLUDED
#define FUNCTION_INCLUDED


/*
    FUNCTION DECLARATIONS

    The routines in this module are concerned with the construction and
    application of functions.
*/

extern void begin_function(IDENTIFIER);
extern EXP end_function(IDENTIFIER, EXP);
extern void begin_param(IDENTIFIER);
extern void end_param(void);
extern void adjust_param(TYPE);
extern int function_params(TYPE);
extern TYPE make_param_type(TYPE, int);
extern TYPE make_func_type(TYPE, int, CV_SPEC, LIST(TYPE));
extern CV_SPEC func_linkage(CV_SPEC);
extern void member_func_type(CLASS_TYPE, unsigned, TYPE);
extern void check_weak_func(TYPE, int);
extern void decl_func_type(IDENTIFIER, TYPE, int);
extern TYPE find_func_type(TYPE);
extern TYPE redecl_func_type(IDENTIFIER, TYPE, TYPE, int, int);
extern EXP apply_func_id(IDENTIFIER, QUALIFIER, GRAPH, LIST(EXP));
extern LIST(EXP) convert_args(LIST(EXP));
extern EXP make_func_exp(EXP, LIST(EXP), int);
extern EXP check_inline(IDENTIFIER, LIST(EXP), TYPE);
extern TYPE check_main(TYPE, HASHID);
extern void recheck_main(IDENTIFIER);
extern int pass_complex_type(TYPE);
extern unsigned min_no_args(TYPE);
extern void func_type_defn(int);
extern ERROR check_param_type(IDENTIFIER, TYPE);
extern TYPE check_ret_type(TYPE, ERROR *, int);
extern int check_func_dargs(TYPE, int, int);
extern void object_type(TYPE, unsigned);


/*
    FUNCTION VARIABLES

    These variables are used to store information about the current
    function definition.
*/

extern IDENTIFIER crt_func_id;
extern TYPE crt_func_return;
extern int crt_func_complex;
extern IDENTIFIER main_function;


/*
    FUNCTION TYPES

    The various kinds of functions are given by combinations of the
    following values, which are stored in the ellipsis field of the
    corresponding function type.  In C++ the only possibilities are
    FUNC_NONE and FUNC_ELLIPSIS indicating whether or not the function
    is declared with ellipsis; the fact that these have the values 0 and
    1 is used.  In C non-prototype functions introduce other kinds of
    function:

        FUNC_NO_PARAMS          no type information,
        FUNC_WEAK_PARAMS        weak prototype or non-prototype definition,
        FUNC_WEAK_ARGS          implicit weak prototype.

    During type construction the following values are used:

        FUNC_NO_PARAMS          no type information,
        FUNC_PARAMS             non-prototype definition,
        FUNC_WEAK               weak prototype.
*/

#define FUNC_NONE               0
#define FUNC_ELLIPSIS           1
#define FUNC_WEAK               2
#define FUNC_PARAMS             4
#define FUNC_NO_PARAMS          8
#define FUNC_WEAK_PARAMS        (FUNC_WEAK | FUNC_PARAMS)
#define FUNC_WEAK_ARGS          (FUNC_WEAK)
#define FUNC_VAR_PARAMS         (FUNC_ELLIPSIS | FUNC_NO_PARAMS)
#define FUNC_NON_PROTO          (FUNC_WEAK | FUNC_PARAMS | FUNC_NO_PARAMS)


#endif