gcc/m2/gm2-compiler/M2Debug.mod

   1 (* M2Debug.mod simple debugging facilities in the Modula-2 compiler.
   2
   3 Copyright (C) 2001-2022 Free Software Foundation, Inc.
   4 Contributed by Gaius Mulley <gaius.mulley@southwales.ac.uk>.
   5
   6 This file is part of GNU Modula-2.
   7
   8 GNU Modula-2 is free software; you can redistribute it and/or modify
   9 it under the terms of the GNU General Public License as published by
  10 the Free Software Foundation; either version 3, or (at your option)
  11 any later version.
  12
  13 GNU Modula-2 is distributed in the hope that it will be useful, but
  14 WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16 General Public License for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GNU Modula-2; see the file COPYING3.  If not see
  20 <http://www.gnu.org/licenses/>.  *)
  21
  22 IMPLEMENTATION MODULE M2Debug ;
  23
  24
  25 FROM StrIO IMPORT WriteString, WriteLn ;
  26 FROM M2Error IMPORT InternalError ;
  27 FROM M2Options IMPORT CompilerDebugging ;
  28
  29
  30 (*
  31    Assert - tests the boolean, q. If false then an error is reported
  32             and the execution is HALTed.
  33 *)
  34
  35 PROCEDURE Assert (q: BOOLEAN) ;
  36 BEGIN
  37    IF NOT q
  38    THEN
  39       InternalError ('assert failed')
  40    END
  41 END Assert ;
  42
  43
  44 (*
  45    WriteDebug - only writes a string if the debugging mode is on.
  46 *)
  47
  48 PROCEDURE WriteDebug (a: ARRAY OF CHAR) ;
  49 BEGIN
  50    IF CompilerDebugging
  51    THEN
  52       WriteString(a) ; WriteLn
  53    END
  54 END WriteDebug ;
  55
  56
  57 END M2Debug.