6853d8eecd
generic fixes for WIN32 libraries git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@1172 b08c6af1-5177-4d33-ba66-4b1c6b8b522a
309 lines
8.5 KiB
Prolog
309 lines
8.5 KiB
Prolog
/*************************************************************************
|
|
* *
|
|
* YAP Prolog *
|
|
* *
|
|
* Yap Prolog was developed at NCCUP - Universidade do Porto *
|
|
* *
|
|
* Copyright L.Damas, V.S.Costa and Universidade do Porto 1985-1997 *
|
|
* *
|
|
**************************************************************************
|
|
* *
|
|
* File: consult.yap *
|
|
* Last rev: 8/2/88 *
|
|
* mods: *
|
|
* comments: Consulting Files in YAP *
|
|
* *
|
|
*************************************************************************/
|
|
|
|
ensure_loaded(V) :-
|
|
'$current_module'(M),
|
|
'$ensure_loaded'(V).
|
|
|
|
'$ensure_loaded'(V) :- var(V), !,
|
|
'$do_error'(instantiation_error,ensure_loaded(V)).
|
|
'$ensure_loaded'([]) :- !.
|
|
'$ensure_loaded'([F|Fs]) :- !,
|
|
'$ensure_loaded'(F),
|
|
'$ensure_loaded'(Fs).
|
|
'$ensure_loaded'(M:X) :- atom(M), !,
|
|
'$current_module'(M0),
|
|
'$change_module'(M),
|
|
'$ensure_loaded'(X),
|
|
'$change_module'(M0).
|
|
'$ensure_loaded'(X) :-
|
|
'$find_in_path'(X,Y,ensure_loaded(X)),
|
|
'$open'(Y, '$csult', Stream, 0), !,
|
|
'$current_module'(M),
|
|
( '$loaded'(Stream, M, TFN) ->
|
|
( recorded('$module','$module'(TFN,NM,P),_) ->
|
|
'$import'(P,NM,M)
|
|
;
|
|
true
|
|
)
|
|
;
|
|
'$reconsult'(X,M,Stream)
|
|
),
|
|
'$close'(Stream).
|
|
'$ensure_loaded'(X) :-
|
|
'$do_error'(permission_error(input,stream,X),ensure_loaded(X)).
|
|
|
|
|
|
compile(P) :-
|
|
'$has_yap_or',
|
|
'$do_error'(context_error(compile(P),clause),query).
|
|
compile(P) :-
|
|
'$compile'(P).
|
|
|
|
% leave compile mode to 1 for native code.
|
|
'$compile'(M:A) :- !,
|
|
'$reconsult'(A, M).
|
|
'$compile'(A) :-
|
|
'$compile_mode'(Old,0),
|
|
'$current_module'(M0),
|
|
'$reconsult'(A, M0),
|
|
'$compile_mode'(_,Old).
|
|
|
|
consult(Fs) :-
|
|
'$has_yap_or',
|
|
'$do_error'(context_error(consult(Fs),clause),query).
|
|
consult(V) :-
|
|
var(V), !,
|
|
'$do_error'(instantiation_error,consult(V)).
|
|
consult(M0:Fs) :- !,
|
|
'$consult'(Fs, M0).
|
|
consult(Fs) :-
|
|
'$current_module'(M0),
|
|
'$consult'(Fs, M0).
|
|
|
|
reconsult(Fs) :-
|
|
'$has_yap_or', fail,
|
|
'$do_error'(context_error(reconsult(Fs),clause),query).
|
|
reconsult(V) :-
|
|
var(V), !,
|
|
'$do_error'(instantiation_error,reconsult(V)).
|
|
reconsult(M0:Fs) :- !,
|
|
'$reconsult'(Fs, M0).
|
|
reconsult(Fs) :-
|
|
'$current_module'(M0),
|
|
'$reconsult'(Fs, M0).
|
|
|
|
'$reconsult'(V, _) :- var(V), !,
|
|
'$do_error'(instantiation_error,reconsult(V)).
|
|
'$reconsult'([], _) :- !.
|
|
'$reconsult'(M:X, _) :-
|
|
(
|
|
atom(M)
|
|
->
|
|
'$reconsult'(X, M)
|
|
;
|
|
'$do_error'(type_error(atom,M),reconsult(M:X))
|
|
).
|
|
'$reconsult'([F|Fs], M) :- !,
|
|
'$reconsult'(F, M),
|
|
'$reconsult'(Fs, M).
|
|
'$reconsult'(X, M) :-
|
|
'$find_in_path'(X,Y,reconsult(X)),
|
|
'$open'(Y,'$csult',Stream,0), !,
|
|
'$reconsult'(X,M,Stream),
|
|
'$close'(Stream).
|
|
'$reconsult'(X, M) :-
|
|
'$do_error'(permission_error(input,stream,X),reconsult(M:X)).
|
|
|
|
'$reconsult'(F,M,Stream) :-
|
|
'$record_loaded'(Stream, M),
|
|
fail.
|
|
'$reconsult'(F, ContextModule, Stream) :-
|
|
'$current_module'(OldModule,ContextModule),
|
|
'$getcwd'(OldD),
|
|
get_value('$consulting_file',OldF),
|
|
'$set_consulting_file'(Stream),
|
|
H0 is heapused, '$cputime'(T0,_),
|
|
current_stream(File,_,Stream),
|
|
get_value('$consulting',Old),
|
|
set_value('$consulting',false),
|
|
'$start_reconsulting'(F),
|
|
'$start_consult'(reconsult,File,LC),
|
|
'$remove_multifile_clauses'(File),
|
|
recorda('$initialisation','$',_),
|
|
'$print_message'(informational, loading(reconsulting, File)),
|
|
'$loop'(Stream,reconsult),
|
|
'$end_consult',
|
|
'$clear_reconsulting',
|
|
set_value('$consulting',Old),
|
|
set_value('$consulting_file',OldF),
|
|
'$cd'(OldD),
|
|
'$current_module'(Mod,OldModule),
|
|
( LC == 0 -> prompt(_,' |: ') ; true),
|
|
H is heapused-H0, '$cputime'(TF,_), T is TF-T0,
|
|
'$print_message'(informational, loaded(reconsulted, File, Mod, T, H)),
|
|
'$exec_initialisation_goals',
|
|
!.
|
|
|
|
'$start_reconsulting'(F) :-
|
|
recorda('$reconsulted','$',_),
|
|
recorda('$reconsulting',F,_).
|
|
|
|
'$initialization'(V) :-
|
|
var(V), !,
|
|
'$do_error'(instantiation_error,initialization(V)).
|
|
'$initialization'(C) :- number(C), !,
|
|
'$do_error'(type_error(callable,C),initialization(C)).
|
|
'$initialization'(C) :- db_reference(C), !,
|
|
'$do_error'(type_error(callable,C),initialization(C)).
|
|
'$initialization'(G) :-
|
|
recorda('$initialisation',G,_),
|
|
fail.
|
|
'$initialization'(_).
|
|
|
|
|
|
'$include'(V, _) :- var(V), !,
|
|
'$do_error'(instantiation_error,include(V)).
|
|
'$include'([], _) :- !.
|
|
'$include'([F|Fs], Status) :- !,
|
|
'$include'(F, Status),
|
|
'$include'(Fs, Status).
|
|
'$include'(X, Status) :-
|
|
'$find_in_path'(X,Y,include(X)),
|
|
'$values'('$included_file',OY,Y),
|
|
'$current_module'(Mod),
|
|
H0 is heapused, '$cputime'(T0,_),
|
|
( '$open'(Y,'$csult',Stream,0), !,
|
|
'$print_message'(informational, loading(including, Y)),
|
|
'$loop'(Stream,Status), '$close'(Stream)
|
|
;
|
|
'$do_error'(permission_error(input,stream,Y),include(X))
|
|
),
|
|
H is heapused-H0, '$cputime'(TF,_), T is TF-T0,
|
|
'$print_message'(informational, loaded(included, Y, Mod, T, H)),
|
|
set_value('$included_file',OY).
|
|
|
|
'$do_startup_reconsult'(X) :-
|
|
( '$access_yap_flags'(15, 0) ->
|
|
true
|
|
;
|
|
set_value('$verbose',off)
|
|
),
|
|
( '$find_in_path'(X,Y,reconsult(X)),
|
|
'$open'(Y,'$csult',Stream,0) ->
|
|
( '$access_yap_flags'(15, 0) -> true ; '$skip_unix_comments'(Stream) ),
|
|
'$current_module'(M), '$reconsult'(X,M,Stream), '$close'(Stream)
|
|
;
|
|
'$output_error_message'(permission_error(input,stream,X),reconsult(X))
|
|
),
|
|
( '$access_yap_flags'(15, 0) -> true ; halt).
|
|
|
|
'$skip_unix_comments'(Stream) :-
|
|
'$peek'(Stream, 0'#), !, % 35 is ASCII for #
|
|
'$get0_line_codes'(Stream, _),
|
|
'$skip_unix_comments'(Stream).
|
|
'$skip_unix_comments'(_).
|
|
|
|
|
|
prolog_load_context(_, _) :-
|
|
get_value('$consulting_file',[]), !, fail.
|
|
prolog_load_context(directory, DirName) :-
|
|
get_value('$consulting_file',FileName),
|
|
(FileName = user_input ->
|
|
'$getcwd'(S),
|
|
atom_codes(DirName,S)
|
|
;
|
|
atom_codes(FileName,S),
|
|
'$strip_file_for_scd'(S,Dir,Unsure,Unsure),
|
|
atom_codes(DirName,Dir)
|
|
).
|
|
prolog_load_context(file, FileName) :-
|
|
get_value('$included_file',IncFileName),
|
|
( IncFileName = [] ->
|
|
get_value('$consulting_file',FileName)
|
|
;
|
|
FileName = IncFileName
|
|
).
|
|
prolog_load_context(module, X) :-
|
|
'$current_module'(X).
|
|
prolog_load_context(source, FileName) :-
|
|
get_value('$consulting_file',FileName).
|
|
prolog_load_context(stream, Stream) :-
|
|
'$fetch_stream_alias'('$loop_stream', Stream).
|
|
prolog_load_context(term_position, Position) :-
|
|
'$fetch_stream_alias'('$loop_stream', Stream),
|
|
stream_position(Stream, Position).
|
|
|
|
|
|
'$loaded'(Stream,M,F1) :-
|
|
'$file_name'(Stream,F),
|
|
'$loaded_file'(F,M,F1).
|
|
|
|
% if the file exports a module, then we can
|
|
% be imported from any module.
|
|
'$loaded_file'(F,M,F1) :-
|
|
recorded('$module','$module'(F1,_,P),_),
|
|
recorded('$loaded','$loaded'(F1,_,Age),R),
|
|
'$same_file'(F1,F), !,
|
|
'$loaded_file_age'(F, R, Age).
|
|
'$loaded_file'(F,M,F1) :-
|
|
recorded('$loaded','$loaded'(F1,M,Age),R),
|
|
'$same_file'(F1,F), !,
|
|
'$loaded_file_age'(F, R, Age).
|
|
|
|
'$loaded_file_age'(F, R, Age) :-
|
|
'$file_age'(F,CurrentAge),
|
|
((CurrentAge = Age ; Age = -1) -> true; erase(R), fail).
|
|
|
|
|
|
|
|
path(Path) :- findall(X,'$in_path'(X),Path).
|
|
|
|
'$in_path'(X) :- recorded('$path',Path,_),
|
|
atom_codes(Path,S),
|
|
( S = "" -> X = '.' ;
|
|
atom_codes(X,S) ).
|
|
|
|
add_to_path(New) :- add_to_path(New,last).
|
|
|
|
add_to_path(New,Pos) :-
|
|
atom(New), !,
|
|
'$check_path'(New,Str),
|
|
atom_codes(Path,Str),
|
|
'$add_to_path'(Path,Pos).
|
|
|
|
'$add_to_path'(New,_) :- recorded('$path',New,R), erase(R), fail.
|
|
'$add_to_path'(New,last) :- !, recordz('$path',New,_).
|
|
'$add_to_path'(New,first) :- recorda('$path',New,_).
|
|
|
|
remove_from_path(New) :- '$check_path'(New,Path),
|
|
recorded('$path',Path,R), erase(R).
|
|
|
|
'$check_path'(At,SAt) :- atom(At), !, atom_codes(At,S), '$check_path'(S,SAt).
|
|
'$check_path'([],[]).
|
|
'$check_path'([Ch],[Ch]) :- '$dir_separator'(Ch), !.
|
|
'$check_path'([Ch],[Ch,A]) :- !, integer(Ch), '$dir_separator'(A).
|
|
'$check_path'([N|S],[N|SN]) :- integer(N), '$check_path'(S,SN).
|
|
|
|
% add_multifile_predicate when we start consult
|
|
'$add_multifile'(Name,Arity,Module) :-
|
|
get_value('$consulting_file',File),
|
|
'$add_multifile'(File,Name,Arity,Module).
|
|
|
|
'$add_multifile'(File,Name,Arity,Module) :-
|
|
recordzifnot('$multifile_defs','$defined'(File,Name,Arity,Module),_), !,
|
|
fail.
|
|
'$add_multifile'(File,Name,Arity,Module) :-
|
|
recorded('$mf','$mf_clause'(File,Name,Arity,Module,Ref),R),
|
|
erase(R),
|
|
erase(Ref),
|
|
fail.
|
|
'$add_multifile'(_,_,_,_).
|
|
|
|
% retract old multifile clauses for current file.
|
|
'$remove_multifile_clauses'(FileName) :-
|
|
recorded('$multifile_defs','$defined'(FileName,_,_,_),R1),
|
|
erase(R1),
|
|
fail.
|
|
'$remove_multifile_clauses'(FileName) :-
|
|
recorded('$mf','$mf_clause'(FileName,_,_,Module,Ref),R),
|
|
'$erase_clause'(Ref, Module),
|
|
erase(R),
|
|
fail.
|
|
'$remove_multifile_clauses'(_).
|
|
|