1 /****************************************************************************
2  *                                                                          *
3  *                         GNAT COMPILER COMPONENTS                         *
4  *                                                                          *
5  *                                  A D A                                   *
6  *                                                                          *
7  *                              C Header File                               *
8  *                                                                          *
9  *          Copyright (C) 1992-2009, Free Software Foundation, Inc.         *
10  *                                                                          *
11  * GNAT is free software;  you can  redistribute it  and/or modify it under *
12  * terms of the  GNU General Public License as published  by the Free Soft- *
13  * ware  Foundation;  either version 3,  or (at your option) any later ver- *
14  * sion.  GNAT is distributed in the hope that it will be useful, but WITH- *
15  * OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY *
16  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License *
17  * for  more details.  You should have  received  a copy of the GNU General *
18  * Public License  distributed  with GNAT;  see file  COPYING3.  If not see *
19  * <http://www.gnu.org/licenses/>.                                          *
20  *                                                                          *
21  * GNAT was originally developed  by the GNAT team at  New York University. *
22  * Extensive contributions were provided by Ada Core Technologies Inc.      *
23  *                                                                          *
24  ****************************************************************************/
25 
26 /* This file contains some standard macros for performing Ada-like
27    operations. These are used to aid in the translation of other headers. */
28 
29 #ifndef GCC_ADA_H
30 #define GCC_ADA_H
31 
32 /* Inlined functions in header are preceded by INLINE, which is normally set
33    to extern inline for GCC, but may be set to static for use in standard
34    ANSI-C.  */
35 
36 #ifndef INLINE
37 #ifdef __GNUC__
38 #define INLINE static inline
39 #else
40 #define INLINE static
41 #endif
42 #endif
43 
44 /* Define a macro to concatenate two strings.  Write it for ANSI C and
45    for traditional C.  */
46 
47 #ifdef __STDC__
48 #define CAT(A,B) A##B
49 #else
50 #define _ECHO(A) A
51 #define CAT(A,B) ECHO(A)B
52 #endif
53 
54 /* The following macro definition simulates the effect of a declaration of
55    a subtype, where the first two parameters give the name of the type and
56    subtype, and the third and fourth parameters give the subtype range. The
57    effect is to compile a typedef defining the subtype as a synonym for the
58    type, together with two constants defining the end points.  */
59 
60 #define SUBTYPE(SUBTYPE,TYPE,FIRST,LAST)	\
61   typedef TYPE SUBTYPE;				\
62   enum { CAT (SUBTYPE,__First) = FIRST,		\
63          CAT (SUBTYPE,__Last) = LAST };
64 
65 /* The following definition provides the equivalent of the Ada IN operator,
66    assuming that the subtype involved has been defined using the SUBTYPE
67    macro defined above.  */
68 
69 #define IN(VALUE,SUBTYPE) \
70   (((VALUE) >= (SUBTYPE) CAT (SUBTYPE,__First)) \
71    && ((VALUE) <= (SUBTYPE) CAT (SUBTYPE,__Last)))
72 
73 #endif
74