e5f4633c39
which included commits to RCS files with non-trunk default branches. git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@5 b08c6af1-5177-4d33-ba66-4b1c6b8b522a
148 lines
3.8 KiB
Prolog
148 lines
3.8 KiB
Prolog
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% clp(q,r) version 1.3.3 %
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% %
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% (c) Copyright 1992,1993,1994,1995 %
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% Austrian Research Institute for Artificial Intelligence (OFAI) %
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% Schottengasse 3 %
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% A-1010 Vienna, Austria %
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% %
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% File: dump.pl %
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% Author: Christian Holzbaur christian@ai.univie.ac.at %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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/*
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dump( +Target, ?NewVars, ?CodedAnswer)
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where Target and NewVars are lists of variables of equal length and
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CodedAnswer is the term representation of the projection of constraints
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onto the target variables where the target variables are replaced by
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the corresponding variables from NewVars.
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*/
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:- use_module( library(terms), [term_variables/2]).
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:- use_module( library(assoc),
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[
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empty_assoc/1,
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get_assoc/3,
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put_assoc/4,
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assoc_to_list/2
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]).
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dump( Target, NewVars, Constraints) :-
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(
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( proper_varlist( Target) ->
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true
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;
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raise_exception(instantiation_error(dump(Target,NewVars,Constraints),1))
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),
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ordering( Target),
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related_linear_vars( Target, All),
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nonlin_crux( All, Nonlin),
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project_attributes( Target, All),
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related_linear_vars( Target, Again), % project drops/adds vars
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all_attribute_goals( Again, Gs, Nonlin),
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empty_assoc( D0),
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mapping( Target, NewVars, D0,D1), % late (AVL suffers from put_atts)
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copy( Gs, Copy, D1,_), % strip constraints
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bb_put( copy, NewVars/Copy),
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fail % undo projection
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;
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bb_delete( copy, NewVars/Constraints) % garbage collect
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).
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proper_varlist( X) :- var( X), !, fail.
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proper_varlist( []).
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proper_varlist( [X|Xs]) :-
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var( X),
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proper_varlist( Xs).
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related_linear_vars( Vs, All) :-
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empty_assoc( S0),
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related_linear_sys( Vs, S0,Sys),
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related_linear_vars( Sys, All, []).
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related_linear_sys( [], S0,L0) :- assoc_to_list( S0, L0).
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related_linear_sys( [V|Vs], S0,S2) :-
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( get_atts( V, class(C)) ->
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put_assoc( C, S0, C, S1)
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;
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S1 = S0
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),
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related_linear_sys( Vs, S1,S2).
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related_linear_vars( []) --> [].
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related_linear_vars( [S-_|Ss]) -->
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{
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class_allvars( S, Otl)
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},
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cpvars( Otl),
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related_linear_vars( Ss).
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cpvars( Xs) --> {var(Xs)}, !.
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cpvars( [X|Xs]) -->
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( {var(X)} -> [X] ; [] ),
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cpvars( Xs).
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nonlin_crux( All, Gss) :-
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collect_nonlin( All, Gs, []), % destructive
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this_linear_solver( Solver),
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nonlin_strip( Gs, Solver, Gss).
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nonlin_strip( [], _, []).
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nonlin_strip( [M:What|Gs], Solver, Res) :-
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( M == Solver ->
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( What = {G} ->
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Res = [G|Gss]
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;
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Res = [What|Gss]
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)
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;
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Res = Gss
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),
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nonlin_strip( Gs, Solver, Gss).
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all_attribute_goals( []) --> [].
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all_attribute_goals( [V|Vs]) -->
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dump_linear( V, toplevel),
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dump_nonzero( V, toplevel),
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all_attribute_goals( Vs).
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mapping( [], [], D0,D0).
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mapping( [T|Ts], [N|Ns], D0,D2) :-
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put_assoc( T, D0, N, D1),
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mapping( Ts, Ns, D1,D2).
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copy( Term, Copy, D0,D1) :- var( Term),
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( get_assoc( Term, D0, New) ->
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Copy = New,
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D1 = D0
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;
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put_assoc( Term, D0, Copy, D1)
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).
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copy( Term, Copy, D0,D1) :- nonvar( Term),
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functor( Term, N, A),
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functor( Copy, N, A),
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copy( A, Term, Copy, D0,D1).
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copy( 0, _, _, D0,D0) :- !.
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copy( 1, T, C, D0,D1) :- !,
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arg( 1, T, At1),
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arg( 1, C, Ac1),
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copy( At1, Ac1, D0,D1).
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copy( 2, T, C, D0,D2) :- !,
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arg( 1, T, At1),
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arg( 1, C, Ac1),
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copy( At1, Ac1, D0,D1),
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arg( 2, T, At2),
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arg( 2, C, Ac2),
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copy( At2, Ac2, D1,D2).
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copy( N, T, C, D0,D2) :-
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arg( N, T, At),
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arg( N, C, Ac),
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copy( At, Ac, D0,D1),
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N1 is N-1,
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copy( N1, T, C, D1,D2).
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end_of_file.
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