181 lines
		
	
	
		
			6.1 KiB
		
	
	
	
		
			Prolog
		
	
	
	
	
	
			
		
		
	
	
			181 lines
		
	
	
		
			6.1 KiB
		
	
	
	
		
			Prolog
		
	
	
	
	
	
/*  $Id$
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    Part of CHR (Constraint Handling Rules)
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    Author:        Tom Schrijvers
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    E-mail:        Tom.Schrijvers@cs.kuleuven.be
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    WWW:           http://www.swi-prolog.org
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    Copyright (C): 2005, K.U. Leuven
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    This program is free software; you can redistribute it and/or
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    modify it under the terms of the GNU General Public License
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    as published by the Free Software Foundation; either version 2
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    of the License, or (at your option) any later version.
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    This program is distributed in the hope that it will be useful,
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    but WITHOUT ANY WARRANTY; without even the implied warranty of
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    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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    GNU General Public License for more details.
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    You should have received a copy of the GNU Lesser General Public
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    License along with this library; if not, write to the Free Software
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    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
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    As a special exception, if you link this library with other files,
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    compiled with a Free Software compiler, to produce an executable, this
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    library does not by itself cause the resulting executable to be covered
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    by the GNU General Public License. This exception does not however
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    invalidate any other reasons why the executable file might be covered by
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    the GNU General Public License.
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*/
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%% @addtogroup CHR_in_YAP_Programs
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%
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% CHR error handling
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%
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:- module(chr_compiler_errors,
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		[
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			chr_info/3,
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			chr_warning/3,
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			chr_error/3,
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			print_chr_error/1
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		]).
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:- use_module(chr_compiler_options).
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% chr_info(+Type,+FormattedMessage,+MessageParameters)
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chr_info(_,Message,Params) :-
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	( \+verbosity_on ->
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		true
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	;
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		long_line_with_equality_signs,
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		format(user_error,'CHR compiler:\n',[]),
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		format(user_error,Message,Params),
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		long_line_with_equality_signs
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	).
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%% SWI begin
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verbosity_on :-
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	current_prolog_flag(verbose,V), V \== silent,
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	current_prolog_flag(verbose_load,true).
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%% SWI end
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%% SICStus begin
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%% verbosity_on.  % at the moment
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%% SICStus end
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% chr_warning(+Type,+FormattedMessage,+MessageParameters)
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chr_warning(deprecated(Term),Message,Params) :- !,
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	long_line_with_equality_signs,
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	format(user_error,'CHR compiler WARNING: deprecated syntax      ~w.\n',[Term]),
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	format(user_error,'    `--> ',[]),
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	format(user_error,Message,Params),
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        format(user_error,'    Support for deprecated syntax will be discontinued in the near future!\n',[]),
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	long_line_with_equality_signs.
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chr_warning(internal,Message,Params) :- !,
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	long_line_with_equality_signs,
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	format(user_error,'CHR compiler WARNING: something unexpected happened in the CHR compiler.\n',[]),
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	format(user_error,'    `--> ',[]),
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	format(user_error,Message,Params),
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        format(user_error,'    Your program may not have been compiled correctly!\n',[]),
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        format(user_error,'    Please contact tom.schrijvers@cs.kuleuven.be.\n',[]),
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	long_line_with_equality_signs.
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chr_warning(unsupported_pragma(Pragma,Rule),Message,Params) :- !,
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	long_line_with_equality_signs,
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	format(user_error,'CHR compiler WARNING: unsupported pragma ~w in ~@.\n',[Pragma,format_rule(Rule)]),
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	format(user_error,'    `--> ',[]),
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	format(user_error,Message,Params),
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        format(user_error,'    Pragma is ignored!\n',[]),
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	long_line_with_equality_signs.
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chr_warning(problem_pragma(Pragma,Rule),Message,Params) :- !,
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	long_line_with_equality_signs,
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	format(user_error,'CHR compiler WARNING: unsupported pragma ~w in ~@.\n',[Pragma,format_rule(Rule)]),
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	format(user_error,'    `--> ',[]),
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	format(user_error,Message,Params),
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	long_line_with_equality_signs.
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chr_warning(_,Message,Params) :-
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	( chr_pp_flag(verbosity,on) ->
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		long_line_with_equality_signs,
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		format(user_error,'CHR compiler WARNING:\n',[]),
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		format(user_error,'    `--> ',[]),
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		format(user_error,Message,Params),
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		long_line_with_equality_signs
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	;
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		true
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	).
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% chr_error(+Type,+FormattedMessage,+MessageParameters)
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chr_error(Type,Message,Params) :-
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	throw(chr_error(error(Type,Message,Params))).
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print_chr_error(error(Type,Message,Params)) :-
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	print_chr_error(Type,Message,Params).
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print_chr_error(syntax(Term),Message,Params) :- !,
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	long_line_with_equality_signs,
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	format(user_error,'CHR compiler ERROR: invalid syntax "~w".\n',[Term]),
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	format(user_error,'    `--> ',[]),
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	format(user_error,Message,Params),
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	long_line_with_equality_signs.
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print_chr_error(type_error,Message,Params) :- !,
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	long_line_with_equality_signs,
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	format(user_error,'CHR compiler TYPE ERROR:\n',[]),
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	format(user_error,'    `--> ',[]),
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	format(user_error,Message,Params),
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	long_line_with_equality_signs.
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print_chr_error(internal,Message,Params) :- !,
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	long_line_with_equality_signs,
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	format(user_error,'CHR compiler ERROR: something unexpected happened in the CHR compiler.\n',[]),
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	format(user_error,'    `--> ',[]),
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	format(user_error,Message,Params),
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        format(user_error,'    Please contact tom.schrijvers@cs.kuleuven.be.\n',[]),
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	long_line_with_equality_signs.
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print_chr_error(cyclic_alias(Alias),_Message,_Params) :- !,
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	long_line_with_equality_signs,
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	format(user_error,'CHR compiler ERROR: cyclic alias "~w".\n',[Alias]),
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	format(user_error,'    `--> Aborting compilation.\n',[]),
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	long_line_with_equality_signs.
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print_chr_error(_,Message,Params) :-
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	long_line_with_equality_signs,
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	format(user_error,'CHR compiler ERROR:\n',[]),
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	format(user_error,'    `--> ',[]),
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	format(user_error,Message,Params),
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	long_line_with_equality_signs.
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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:- public
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	format_rule/1.			% called using format/3 `@'
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format_rule(PragmaRule) :-
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	PragmaRule = pragma(_,_,Pragmas,MaybeName,N),
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	( MaybeName = yes(Name) ->
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		write('rule '), write(Name)
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	;
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		write('rule number '), write(N)
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	),
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	( memberchk(line_number(LineNumber),Pragmas) ->
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		write(' (line '),
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		write(LineNumber),
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		write(')')
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	;
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		true
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	).
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long_line_with_equality_signs :-
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	format(user_error,'================================================================================\n',[]).
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