137 lines
		
	
	
		
			3.3 KiB
		
	
	
	
		
			Prolog
		
	
	
	
	
	
			
		
		
	
	
			137 lines
		
	
	
		
			3.3 KiB
		
	
	
	
		
			Prolog
		
	
	
	
	
	
/**
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 * @file   ypp.yap
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 * @author Nuno Fonseca (nunofonseca@acm.org), Tiago Soares
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 * @date  2005-05-14
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 * 
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 * @brief  Yap PreProcessing
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 * 
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 * 
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*/
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%====================================================================================
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%
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% YPP: Yap PreProcessing
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%
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% Author: Nuno Fonseca (nunofonseca@acm.org)
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% Date: 
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% $Id: ypp.yap,v 1.4 2006-03-07 17:30:47 tiagosoares Exp $
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%
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%====================================================================================
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%====================================================================================
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% Module declarations
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%====================================================================================
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:-module(ypp,[
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	      ypp_state/1,	% ypp_state(on|off)
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	      ypp_define/2,     % persistent defines  ypp_define(+NAME,VALUE)
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	      ypp_undefine/1,   % persistent defines  ypp_undefine(+NAME)
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	      ypp_extcmd/1,	% ypp_extcmd(?command)
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	      ypp_consult/1,    % similiar to standard consult but with preprocessing
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	      ypp_reconsult/1
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    ]
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        ).
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/**
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* @defgroup ypp Yap PreProcessing
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* @ingroup library
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* 
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*/
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%====================================================================================
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% Public Predicates
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%====================================================================================
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ypp_state(State):-
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	ground(State),!,
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	set_state(State).
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ypp_state(State):-
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	get_state(State),
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	!.
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ypp_define(Name,Value):-
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	ground(Name),ground(Value),
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	store_define(Name,Value).
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ypp_undefine(Name):-
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	ground(Name),
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	del_define(Name).
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ypp_extcmd(Cmd):-
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	ground(Cmd),!,
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	eraseall('____ypp_extcmd'),
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	recorda('____ypp_extcmd',Cmd,_).
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ypp_extcmd(Cmd):-
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	\+ ground(Cmd),
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	recorded('____ypp_extcmd',Cmd,_).
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ypp_consult(File):-
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	(get_state(on)->ypp_file(File,NFile);NFile=File),
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	consult(NFile).
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ypp_reconsult(File):-
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	(get_state(on)->ypp_file(File,NFile);NFile=File),
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	reconsult(NFile).
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%====================================================================================
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% Private Predicates
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%====================================================================================
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set_state(on):-set_value('____ypp_state',1).
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set_state(off):-set_value('____ypp_state',0).
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get_state(State):-
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	get_value('____ypp_state',Val),
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	(Val==0->State=off;State=on).
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store_define(Name,_Value):-
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	recorded('___ypp',def(Name,_),Ref),
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        erase(Ref),
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        fail.
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store_define(Name,Value):-
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	system_variable( Name ),
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	environ( Name, Value ),
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	fail.
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store_define(Name,Value):-
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	recordz('___ypp',def(Name,Value),_),
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	fail.
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store_define(_Name,_Value).
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system_variable( 'YAPLIBDIR' ).
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system_variable( 'YAPSHAREDIR' ).
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system_variable( 'YAPBINDIR' ).
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del_define(Name):-
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	(recorded('___ypp',def(Name,_),Ref)->erase(Ref);true),
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	!.
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%defines2string(-DefineString)
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defines2string(S):-
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	findall(d(Name,Val),recorded('___ypp',def(Name,Val),_),AllDefs),
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	mergedefs(AllDefs,'-D',S),
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	!.
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mergedefs([],_,'').
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mergedefs([d(Name,Val)|RDefs],Pref,S):-
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	mergedefs(RDefs,Pref,S1),
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	atom_concat([Pref,Name,'=',Val,' ',S1],S).
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ypp_file(File,PPFile):-
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	% ppfile
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	atom_concat([File,'.ypp'],PPFile),
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	% Cmdline
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	defines2string(Defs),ypp_extcmd(Cmd),
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	atom_concat([Cmd,' ',PPFile,' ',Defs,' ',File],Cmdline),
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	write(Cmdline),nl,
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%	current_module(M1,M2),
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%	write(M1:M2),nl,
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	system(Cmdline),
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	!.
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% initialization
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:-set_state(on),
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	ypp_extcmd('cpp -P -E -w -o ').
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%	ypp_extcmd('gpp -o').
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