:- source. :- style_check(all). :- yap_flag(unknown,error). :- yap_flag(open_expands_filename,false). % redefines stuff in prolog module. :- module(swi, []). :- ensure_loaded(library(atts)). :- use_module(library(charsio),[write_to_chars/2,read_from_chars/2]). :- use_module(library(lists),[append/2, append/3, delete/3, member/2, memberchk/2, min_list/2, nth/3]). :- use_module(library(system), [datime/1, mktime/2]). :- use_module(library(arg), [genarg/3]). :- use_module(library(terms), [subsumes/2, term_variables/2, term_variables/3, term_hash/2, unifiable/3, variant/2]). :- unhide('$system_library_directories'), unhide('$dir_separator'). % make sure we also use :- user:library_directory(X), atom(X), atom_concat([X,'/swi'],SwiDir), \+ user:library_directory(SwiDir), asserta(user:library_directory(SwiDir)), fail ; true. :- use_module(library(maplist)). :- multifile swi_predicate_table/4. swi_predicate_table(_,maplist(X,Y),maplist,maplist(X,Y)). swi_predicate_table(_,maplist(X,Y,Z),maplist,maplist(X,Y,Z)). swi_predicate_table(_,maplist(X,Y,Z,W),maplist,maplist(X,Y,Z,W)). swi_predicate_table(_,is_list(X),lists,is_list(X)). swi_predicate_table(_,min_list(X,Y),lists,min_list(X,Y)). swi_predicate_table(_,nth(X,Y,Z),lists,nth(X,Y,Z)). swi_predicate_table(_,delete(X,Y,Z),lists,delete(X,Y,Z)). swi_predicate_table(_,nth1(X,Y,Z),lists,nth(X,Y,Z)). swi_predicate_table(_,memberchk(X,Y),lists,memberchk(X,Y)). swi_predicate_table(_,member(X,Y),lists,member(X,Y)). swi_predicate_table(_,append(X,Y),lists,append(X,Y)). swi_predicate_table(_,append(X,Y,Z),lists,append(X,Y,Z)). swi_predicate_table(_,select(X,Y,Z),lists,select(X,Y,Z)). swi_predicate_table(_,hash_term(X,Y),terms,term_hash(X,Y)). swi_predicate_table(_,term_hash(X,Y),terms,term_hash(X,Y)). swi_predicate_table(_,term_variables(X,Y),terms,term_variables(X,Y)). swi_predicate_table(_,term_variables(X,Y,Z),terms,term_variables(X,Y,Z)). swi_predicate_table(_,subsumes(X,Y),terms,subsumes(X,Y)). swi_predicate_table(_,unifiable(X,Y,Z),terms,unifiable(X,Y,Z)). swi_predicate_table(_,genarg(X,Y,Z),arg,genarg(X,Y,Z)). :- dynamic prolog:message/3. :- multifile prolog:message/3. :- multifile user:file_search_path/2. :- dynamic user:file_search_path/2. user:file_search_path(swi, Home) :- current_prolog_flag(home, Home). user:file_search_path(foreign, swi(ArchLib)) :- current_prolog_flag(arch, Arch), atom_concat('lib/', Arch, ArchLib). user:file_search_path(foreign, swi(lib)). :- meta_predicate prolog:predsort(:,+,-). prolog:plus(X, Y, Z) :- integer(X), integer(Y), !, Z is X + Y. prolog:plus(X, Y, Z) :- integer(X), integer(Z), !, Y is Z - X. prolog:plus(X, Y, Z) :- integer(Y), integer(Z), !, X is Z - Y. %% predsort(:Compare, +List, -Sorted) is det. % % Sorts similar to sort/2, but determines the order of two terms % by calling Compare(-Delta, +E1, +E2). This call must unify % Delta with one of <, > or =. If built-in predicate compare/3 is % used, the result is the same as sort/2. See also keysort/2. prolog:predsort(P, L, R) :- length(L, N), predsort(P, N, L, _, R1), !, R = R1. predsort(P, 2, [X1, X2|L], L, R) :- !, call(P, Delta, X1, X2), sort2(Delta, X1, X2, R). predsort(_, 1, [X|L], L, [X]) :- !. predsort(_, 0, L, L, []) :- !. predsort(P, N, L1, L3, R) :- N1 is N // 2, plus(N1, N2, N), predsort(P, N1, L1, L2, R1), predsort(P, N2, L2, L3, R2), predmerge(P, R1, R2, R). sort2(<, X1, X2, [X1, X2]). sort2(=, X1, _, [X1]). sort2(>, X1, X2, [X2, X1]). predmerge(_, [], R, R) :- !. predmerge(_, R, [], R) :- !. predmerge(P, [H1|T1], [H2|T2], Result) :- call(P, Delta, H1, H2), predmerge(Delta, P, H1, H2, T1, T2, Result). predmerge(>, P, H1, H2, T1, T2, [H2|R]) :- predmerge(P, [H1|T1], T2, R). predmerge(=, P, H1, _, T1, T2, [H1|R]) :- predmerge(P, T1, T2, R). predmerge(<, P, H1, H2, T1, T2, [H1|R]) :- predmerge(P, T1, [H2|T2], R). % % maybe a good idea to eventually support this in YAP. % but for now just ignore it. % :- meta_predicate prolog:volatile(:). :- op(1150, fx, 'volatile'). prolog:volatile(P) :- var(P), throw(error(instantiation_error,volatile(P))). prolog:volatile(M:P) :- do_volatile(P,M). prolog:volatile((G1,G2)) :- prolog:volatile(G1), prolog:volatile(G2). prolog:volatile(P) :- do_volatile(P,_). prolog:load_foreign_library(P,Command) :- absolute_file_name(P,[file_type(executable),solutions(first),file_errors(fail)],Lib), load_foreign_files([Lib],[],Command). prolog:load_foreign_library(P) :- prolog:load_foreign_library(P,install). do_volatile(_,_). :- use_module(library(lists)). prolog:term_to_atom(Term,Atom) :- nonvar(Atom), !, atom_codes(Atom,S), read_from_chars(S,Term). prolog:term_to_atom(Term,Atom) :- write_to_chars(Term,S), atom_codes(Atom,S). prolog:concat_atom([A|List], Separator, New) :- var(List), !, atom_codes(Separator,[C]), atom_codes(New, NewChars), split_atom_by_chars(NewChars,C,L,L,A,List). prolog:concat_atom(List, Separator, New) :- add_separator_to_list(List, Separator, NewList), atomic_concat(NewList, New). prolog:concat_atom(List, New) :- atomic_concat(List, New). split_atom_by_chars([],_,[],L,A,[]):- atom_codes(A,L). split_atom_by_chars([C|NewChars],C,[],L,A,[NA|Atoms]) :- !, atom_codes(A,L), split_atom_by_chars(NewChars,C,NL,NL,NA,Atoms). split_atom_by_chars([C1|NewChars],C,[C1|LF],LAtom,Atom,Atoms) :- split_atom_by_chars(NewChars,C,LF,LAtom,Atom,Atoms). add_separator_to_list([], _, []). add_separator_to_list([T], _, [T]) :- !. add_separator_to_list([H|T], Separator, [H,Separator|NT]) :- add_separator_to_list(T, Separator, NT). prolog:setenv(X,Y) :- unix(putenv(X,Y)). prolog:prolog_to_os_filename(X,X). prolog:is_absolute_file_name(X) :- absolute_file_name(X,X). prolog:read_clause(X,Y) :- read_term(X,Y,[singetons(warning)]). prolog:string(_) :- fail. prolog:between(I,_,I). prolog:between(I0,I,J) :- I0 < I, I1 is I0+1, prolog:between(I1,I,J). % SWI has a dynamic attribute scheme prolog:get_attr(Var, Mod, Att) :- AttTerm =.. [Mod,_,Att], attributes:get_module_atts(Var, AttTerm). prolog:put_attr(Var, Mod, Att) :- AttTerm =.. [Mod,_,Att], attributes:put_module_atts(Var, AttTerm). prolog:del_attr(Var, Mod) :- AttTerm =.. [Mod,_,_], attributes:del_all_module_atts(Var, AttTerm). prolog:get_attrs(AttVar, SWIAtts) :- get_all_swi_atts(AttVar,SWIAtts). prolog:put_attrs(_, []). prolog:put_attrs(V, Atts) :- cvt_to_swi_atts(Atts, YapAtts), attributes:put_att_term(V, YapAtts). cvt_to_swi_atts([], _). cvt_to_swi_atts(att(Mod,Attribute,Atts), ModAttribute) :- ModAttribute =.. [Mod, YapAtts, Attribute], cvt_to_swi_atts(Atts, YapAtts). bindings_message(V) --> { cvt_bindings(V, Bindings) }, prolog:message(query(_YesNo,Bindings)), !. cvt_bindings([],[]). cvt_bindings([[Name|Value]|L],[AName=Value|Bindings]) :- atom_codes(AName, Name), cvt_bindings(L,Bindings). '$messages':prolog_message(_,L,L). prolog:working_directory(OCWD,NCWD) :- getcwd(OCWD), (var(NCWD) -> true ; cd(NCWD)). prolog:chdir(X) :- cd(X). % Time is given as int, not as float. prolog:get_time(Secs) :- datime(Datime), mktime(Datime, Secs). % Time is received as int, and converted to "..." prolog:convert_time(X,Y) :- swi:ctime(X,Y). :- hide(atom_concat). prolog:atom_concat(A,B) :- atomic_concat(A,B). prolog:atom_concat(A,B,C) :- atomic_concat(A,B,C). :- hide(create_mutable). :- hide(get_mutable). :- hide(update_mutable). prolog:make. prolog:source_location(File,Line) :- prolog_load_context(file, File), prolog_load_context(term_position, '$stream_position'(_,Line,_)). % copied from SWI lists library. prolog:intersection([], _, []) :- !. prolog:intersection([X|T], L, Intersect) :- memberchk(X, L), !, Intersect = [X|R], prolog:intersection(T, L, R). prolog:intersection([_|T], L, R) :- prolog:intersection(T, L, R). :- op(700, xfx, '=@='). prolog:(Term1 =@= Term2) :- variant(Term1, Term2), !. %% flatten(+List1, ?List2) is det. % % Is true it List2 is a non nested version of List1. % % @deprecated Ending up needing flatten/3 often indicates, % like append/3 for appending two lists, a bad % design. Efficient code that generates lists % from generated small lists must use difference % lists, often possible through grammar rules for % optimal readability. prolog:flatten(List, FlatList) :- flatten(List, [], FlatList0), !, FlatList = FlatList0. flatten(Var, Tl, [Var|Tl]) :- var(Var), !. flatten([], Tl, Tl) :- !. flatten([Hd|Tl], Tail, List) :- !, flatten(Hd, FlatHeadTail, List), flatten(Tl, Tail, FlatHeadTail). flatten(NonList, Tl, [NonList|Tl]).