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 :- use_module(chr_compiler_options).
  40
  41 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  42 % chr_info(+Type,+FormattedMessage,+MessageParameters)
  43
  44 chr_info(_,Message,Params) :-
  45         ( \+verbosity_on ->
  46                 true
  47         ;
  48                 long_line_with_equality_signs,
  49                 format(user_error,'CHR compiler:\n',[]),
  50                 format(user_error,Message,Params),
  51                 long_line_with_equality_signs
  52         ).
  53
  54
  55 %% SWI begin
  56 verbosity_on :-
  57         current_prolog_flag(verbose,V), V \== silent,
  58         current_prolog_flag(verbose_load,true).
  59 %% SWI end
  60
  61 %% SICStus begin
  62 %% verbosity_on.  % at the moment
  63 %% SICStus end
  64
  65 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  66 % chr_warning(+Type,+FormattedMessage,+MessageParameters)
  67
  68 chr_warning(deprecated(Term),Message,Params) :- !,
  69         long_line_with_equality_signs,
  70         format(user_error,'CHR compiler WARNING: deprecated syntax      ~w.\n',[Term]),
  71         format(user_error,'    `--> ',[]),
  72         format(user_error,Message,Params),
  73         format(user_error,'    Support for deprecated syntax will be discontinued in the near future!\n',[]),
  74         long_line_with_equality_signs.
  75
  76 chr_warning(internal,Message,Params) :- !,
  77         long_line_with_equality_signs,
  78         format(user_error,'CHR compiler WARNING: something unexpected happened in the CHR compiler.\n',[]),
  79         format(user_error,'    `--> ',[]),
  80         format(user_error,Message,Params),
  81         format(user_error,'    Your program may not have been compiled correctly!\n',[]),
  82         format(user_error,'    Please contact tom.schrijvers@cs.kuleuven.be.\n',[]),
  83         long_line_with_equality_signs.
  84
  85 chr_warning(unsupported_pragma(Pragma,Rule),Message,Params) :- !,
  86         long_line_with_equality_signs,
  87         format(user_error,'CHR compiler WARNING: unsupported pragma ~w in ~@.\n',[Pragma,format_rule(Rule)]),
  88         format(user_error,'    `--> ',[]),
  89         format(user_error,Message,Params),
  90         format(user_error,'    Pragma is ignored!\n',[]),
  91         long_line_with_equality_signs.
  92 chr_warning(problem_pragma(Pragma,Rule),Message,Params) :- !,
  93         long_line_with_equality_signs,
  94         format(user_error,'CHR compiler WARNING: unsupported pragma ~w in ~@.\n',[Pragma,format_rule(Rule)]),
  95         format(user_error,'    `--> ',[]),
  96         format(user_error,Message,Params),
  97         long_line_with_equality_signs.
  98
  99 chr_warning(_,Message,Params) :-
 100         ( chr_pp_flag(verbosity,on) ->
 101                 long_line_with_equality_signs,
 102                 format(user_error,'CHR compiler WARNING:\n',[]),
 103                 format(user_error,'    `--> ',[]),
 104                 format(user_error,Message,Params),
 105                 long_line_with_equality_signs
 106         ;
 107                 true
 108         ).
 109
 110 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 111 % chr_error(+Type,+FormattedMessage,+MessageParameters)
 112
 113 chr_error(Type,Message,Params) :-
 114         throw(chr_error(error(Type,Message,Params))).
 115
 116 print_chr_error(error(Type,Message,Params)) :-
 117         print_chr_error(Type,Message,Params).
 118
 119 print_chr_error(syntax(Term),Message,Params) :- !,
 120         long_line_with_equality_signs,
 121         format(user_error,'CHR compiler ERROR: invalid syntax "~w".\n',[Term]),
 122         format(user_error,'    `--> ',[]),
 123         format(user_error,Message,Params),
 124         long_line_with_equality_signs.
 125
 126 print_chr_error(internal,Message,Params) :- !,
 127         long_line_with_equality_signs,
 128         format(user_error,'CHR compiler ERROR: something unexpected happened in the CHR compiler.\n',[]),
 129         format(user_error,'    `--> ',[]),
 130         format(user_error,Message,Params),
 131         format(user_error,'    Please contact tom.schrijvers@cs.kuleuven.be.\n',[]),
 132         long_line_with_equality_signs.
 133
 134 print_chr_error(cyclic_alias(Alias),_Message,_Params) :- !,
 135         long_line_with_equality_signs,
 136         format(user_error,'CHR compiler ERROR: cyclic alias "~w".\n',[Alias]),
 137         format(user_error,'    `--> Aborting compilation.\n',[]),
 138         long_line_with_equality_signs.
 139
 140 print_chr_error(_,Message,Params) :-
 141         long_line_with_equality_signs,
 142         format(user_error,'CHR compiler ERROR:\n',[]),
 143         format(user_error,'    `--> ',[]),
 144         format(user_error,Message,Params),
 145         long_line_with_equality_signs.
 146
 147 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 148
 149
 150 format_rule(PragmaRule) :-
 151         PragmaRule = pragma(_,_,Pragmas,MaybeName,N),
 152         ( MaybeName = yes(Name) ->
 153                 write('rule '), write(Name)
 154         ;
 155                 write('rule number '), write(N)
 156         ),
 157         ( memberchk(line_number(LineNumber),Pragmas) ->
 158                 write(' (line '),
 159                 write(LineNumber),
 160                 write(')')
 161         ;
 162                 true
 163         ).
 164
 165 long_line_with_equality_signs :-
 166         format(user_error,'================================================================================\n',[]).