chr_compiler_errors.pl

   1 /*  $Id$
   2
   3     Part of CHR (Constraint Handling Rules)
   4
   5     Author:        Tom Schrijvers
   6     E-mail:        Tom.Schrijvers@cs.kuleuven.be
   7     WWW:           http://www.swi-prolog.org
   8     Copyright (C): 2005, K.U. Leuven
   9
  10     This program is free software; you can redistribute it and/or
  11     modify it under the terms of the GNU General Public License
  12     as published by the Free Software Foundation; either version 2
  13     of the License, or (at your option) any later version.
  14
  15     This program is distributed in the hope that it will be useful,
  16     but WITHOUT ANY WARRANTY; without even the implied warranty of
  17     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18     GNU General Public License for more details.
  19
  20     You should have received a copy of the GNU Lesser General Public
  21     License along with this library; if not, write to the Free Software
  22     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  23
  24     As a special exception, if you link this library with other files,
  25     compiled with a Free Software compiler, to produce an executable, this
  26     library does not by itself cause the resulting executable to be covered
  27     by the GNU General Public License. This exception does not however
  28     invalidate any other reasons why the executable file might be covered by
  29     the GNU General Public License.
  30 */
  31 :- module(chr_compiler_errors,
  32                 [
  33                         chr_info/3,
  34                         chr_warning/3,
  35                         chr_error/3,
  36                         print_chr_error/1
  37                 ]).
  38
  39 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  40 % chr_info(+Type,+FormattedMessage,+MessageParameters)
  41
  42 chr_info(_,Message,Params) :-
  43         ( \+verbosity_on ->
  44                 true
  45         ;
  46                 long_line_with_equality_signs,
  47                 format(user_error,'CHR compiler:\n',[]),
  48                 format(user_error,Message,Params),
  49                 long_line_with_equality_signs
  50         ).
  51
  52
  53 %% SWI begin
  54 verbosity_on :-
  55         current_prolog_flag(verbose,V), V \== silent,
  56         current_prolog_flag(verbose_load,true).
  57 %% SWI end
  58
  59 %% SICStus begin
  60 %% verbosity_on.  % at the moment
  61 %% SICStus end
  62
  63 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  64 % chr_warning(+Type,+FormattedMessage,+MessageParameters)
  65
  66 chr_warning(deprecated(Term),Message,Params) :- !,
  67         long_line_with_equality_signs,
  68         format(user_error,'CHR compiler WARNING: deprecated syntax      ~w.\n',[Term]),
  69         format(user_error,'    `--> ',[]),
  70         format(user_error,Message,Params),
  71         format(user_error,'    Support for deprecated syntax will be discontinued in the near future!\n',[]),
  72         long_line_with_equality_signs.
  73
  74 chr_warning(internal,Message,Params) :- !,
  75         long_line_with_equality_signs,
  76         format(user_error,'CHR compiler WARNING: something unexpected happened in the CHR compiler.\n',[]),
  77         format(user_error,'    `--> ',[]),
  78         format(user_error,Message,Params),
  79         format(user_error,'    Your program may not have been compiled correctly!\n',[]),
  80         format(user_error,'    Please contact tom.schrijvers@cs.kuleuven.be.\n',[]),
  81         long_line_with_equality_signs.
  82
  83 chr_warning(unsupported_pragma(Pragma,Rule),Message,Params) :- !,
  84         long_line_with_equality_signs,
  85         format(user_error,'CHR compiler WARNING: unsupported pragma ~w in ~@.\n',[Pragma,format_rule(Rule)]),
  86         format(user_error,'    `--> ',[]),
  87         format(user_error,Message,Params),
  88         format(user_error,'    Pragma is ignored!\n',[]),
  89         long_line_with_equality_signs.
  90 chr_warning(problem_pragma(Pragma,Rule),Message,Params) :- !,
  91         long_line_with_equality_signs,
  92         format(user_error,'CHR compiler WARNING: unsupported pragma ~w in ~@.\n',[Pragma,format_rule(Rule)]),
  93         format(user_error,'    `--> ',[]),
  94         format(user_error,Message,Params),
  95         long_line_with_equality_signs.
  96
  97 chr_warning(_,Message,Params) :-
  98         long_line_with_equality_signs,
  99         format(user_error,'CHR compiler WARNING:\n',[]),
 100         format(user_error,'    `--> ',[]),
 101         format(user_error,Message,Params),
 102         long_line_with_equality_signs.
 103
 104 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 105 % chr_error(+Type,+FormattedMessage,+MessageParameters)
 106
 107 chr_error(Type,Message,Params) :-
 108         throw(chr_error(error(Type,Message,Params))).
 109
 110 print_chr_error(error(Type,Message,Params)) :-
 111         print_chr_error(Type,Message,Params).
 112
 113 print_chr_error(syntax(Term),Message,Params) :- !,
 114         long_line_with_equality_signs,
 115         format(user_error,'CHR compiler ERROR: invalid syntax "~w".\n',[Term]),
 116         format(user_error,'    `--> ',[]),
 117         format(user_error,Message,Params),
 118         long_line_with_equality_signs.
 119
 120 print_chr_error(internal,Message,Params) :- !,
 121         long_line_with_equality_signs,
 122         format(user_error,'CHR compiler ERROR: something unexpected happened in the CHR compiler.\n'),
 123         format(user_error,'    `--> ',[]),
 124         format(user_error,Message,Params),
 125         format(user_error,'    Please contact tom.schrijvers@cs.kuleuven.be.\n'),
 126         long_line_with_equality_signs.
 127
 128 print_chr_error(cyclic_alias(Alias),_Message,_Params) :- !,
 129         long_line_with_equality_signs,
 130         format(user_error,'CHR compiler ERROR: cyclic alias "~w".\n',[Alias]),
 131         format(user_error,'    `--> Aborting compilation.\n',[]),
 132         long_line_with_equality_signs.
 133
 134 print_chr_error(_,Message,Params) :-
 135         long_line_with_equality_signs,
 136         format(user_error,'CHR compiler ERROR:\n',[]),
 137         format(user_error,'    `--> ',[]),
 138         format(user_error,Message,Params),
 139         long_line_with_equality_signs.
 140
 141 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 142
 143
 144 format_rule(PragmaRule) :-
 145         PragmaRule = pragma(_,_,_,MaybeName,N),
 146         ( MaybeName = yes(Name) ->
 147                 write('rule '), write(Name)
 148         ;
 149                 write('rule number '), write(N)
 150         ).
 151
 152 long_line_with_equality_signs :-
 153         format(user_error,'================================================================================\n',[]).