gcc/ada/ada.h

   1 /****************************************************************************
   2  *                                                                          *
   3  *                         GNAT COMPILER COMPONENTS                         *
   4  *                                                                          *
   5  *                                  A D A                                   *
   6  *                                                                          *
   7  *                              C Header File                               *
   8  *                                                                          *
   9  *          Copyright (C) 1992-2003 Free Software Foundation, Inc.          *
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  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- *
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  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 COPYING.  If not, write *
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  20  * Boston, MA 02110-1301, USA.                                              *
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  22  * As a  special  exception,  if you  link  this file  with other  files to *
  23  * produce an executable,  this file does not by itself cause the resulting *
  24  * executable to be covered by the GNU General Public License. This except- *
  25  * ion does not  however invalidate  any other reasons  why the  executable *
  26  * file might be covered by the  GNU Public License.                        *
  27  *                                                                          *
  28  * GNAT was originally developed  by the GNAT team at  New York University. *
  29  * Extensive contributions were provided by Ada Core Technologies Inc.      *
  30  *                                                                          *
  31  ****************************************************************************/
  32
  33 /* This file contains some standard macros for performing Ada-like
  34    operations. These are used to aid in the translation of other headers. */
  35
  36 #ifndef GCC_ADA_H
  37 #define GCC_ADA_H
  38
  39 /* Inlined functions in header are preceded by INLINE, which is normally set
  40    to extern inline for GCC, but may be set to static for use in standard
  41    ANSI-C.  */
  42
  43 #ifndef INLINE
  44 #ifdef __GNUC__
  45 #define INLINE static inline
  46 #else
  47 #define INLINE static
  48 #endif
  49 #endif
  50
  51 /* Define a macro to concatenate two strings.  Write it for ANSI C and
  52    for traditional C.  */
  53
  54 #ifdef __STDC__
  55 #define CAT(A,B) A##B
  56 #else
  57 #define _ECHO(A) A
  58 #define CAT(A,B) ECHO(A)B
  59 #endif
  60
  61 /* The following macro definition simulates the effect of a declaration of
  62    a subtype, where the first two parameters give the name of the type and
  63    subtype, and the third and fourth parameters give the subtype range. The
  64    effect is to compile a typedef defining the subtype as a synonym for the
  65    type, together with two constants defining the end points.  */
  66
  67 #define SUBTYPE(SUBTYPE,TYPE,FIRST,LAST)        \
  68   typedef TYPE SUBTYPE;                         \
  69   enum { CAT (SUBTYPE,__First) = FIRST,         \
  70          CAT (SUBTYPE,__Last) = LAST };
  71
  72 /* The following definitions provide the equivalent of the Ada IN and NOT IN
  73    operators, assuming that the subtype involved has been defined using the
  74    SUBTYPE macro defined above.  */
  75
  76 #define IN(VALUE,SUBTYPE) \
  77   (((VALUE) >= (SUBTYPE) CAT (SUBTYPE,__First)) \
  78    && ((VALUE) <= (SUBTYPE) CAT (SUBTYPE,__Last)))
  79
  80 #endif