gcc/testsuite/gm2/pim/pass/getconst.mod

   1 (* Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc. *)
   2 (* This file is part of GNU Modula-2.
   3
   4 GNU Modula-2 is free software; you can redistribute it and/or modify it under
   5 the terms of the GNU General Public License as published by the Free
   6 Software Foundation; either version 2, or (at your option) any later
   7 version.
   8
   9 GNU Modula-2 is distributed in the hope that it will be useful, but WITHOUT ANY
  10 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12 for more details.
  13
  14 You should have received a copy of the GNU General Public License along
  15 with gm2; see the file COPYING.  If not, write to the Free Software
  16 Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *)
  17
  18 MODULE getconst ;
  19
  20 CONST
  21    LongReal = 1 ;
  22    Integer  = 2 ;
  23    Char     = 3 ;
  24
  25
  26 PROCEDURE GetSymName (s: CARDINAL) : CARDINAL ;
  27 BEGIN
  28    RETURN s
  29 END GetSymName ;
  30
  31 PROCEDURE LengthKey (s: CARDINAL) : CARDINAL ;
  32 BEGIN
  33    RETURN s
  34 END LengthKey ;
  35
  36 PROCEDURE GetKey (s: CARDINAL; a: ARRAY OF CHAR) ;
  37 BEGIN
  38 END GetKey ;
  39
  40
  41 (*
  42    GetConstLitType - returns the type of the constant, Sym.
  43                      All constants have type NulSym except CHAR constants
  44                      ie 00C 012C etc and floating point constants which have type LONGREAL.
  45 *)
  46
  47 PROCEDURE GetConstLitType (Sym: CARDINAL) : CARDINAL ;
  48 CONST
  49    Max = 4096 ;
  50 VAR
  51    a   : ARRAY [0..Max] OF CHAR ;
  52    i,
  53    High: CARDINAL ;
  54 BEGIN
  55    GetKey(GetSymName(Sym), a) ;
  56    High := LengthKey(GetSymName(Sym)) ;
  57    IF a[High-1]='C'
  58    THEN
  59       RETURN( Char )
  60    ELSE
  61       i := 0 ;
  62       WHILE i<High DO
  63          IF (a[i]='.') OR (a[i]='+')
  64          THEN
  65             RETURN( LongReal )
  66          ELSE
  67             INC(i)
  68          END
  69       END ;
  70       RETURN( Integer )
  71    END
  72 END GetConstLitType ;
  73
  74
  75 BEGIN
  76    IF GetConstLitType(2)=2
  77    THEN
  78    END
  79 END getconst.