164 lines
3.6 KiB
Prolog
164 lines
3.6 KiB
Prolog
/**
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* @file jupyter.yap
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*
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* @brief allow interaction between Jupyter and YAP.
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*
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* @long The code in here:
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* - establishes communication between Prolog and Python Streams
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* - inputs Prolog code and queries
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* - supports completion of Prolog programs.
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* -
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*/
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:- use_module(library(yapi)).
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:- use_module(library(lists)).
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:- use_module(library(maplist)).
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:- use_module(library(python)).
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:- python_import(sys).
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user:jupyter_query(Self, Cell, Line ) :-
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setup_call_cleanup(
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enter_cell(Self),
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jupyter_cell(Self, Cell, Line),
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exit_cell(Self)
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).
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jupyter_cell(_Self, Cell, _) :-
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stop_low_level_trace,
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jupyter_consult(Cell),
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fail.
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jupyter_cell( _Self, _, Line ) :-
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blank( Line ),
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!.
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jupyter_cell( Self, _, Line ) :-
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start_low_level_trace,
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python_query( Self, Line ).
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jupyter_consult(Text) :-
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blank( Text ),
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!.
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jupyter_consult(Cell) :-
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open_mem_read_stream( Cell, Stream),
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load_files(user:'jupyter cell',[stream(Stream)]).
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%should load_files close?
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blank(Text) :-
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atom_codes(Text, L),
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maplist( blankc, L).
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blankc(' ').
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blankc('\n').
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blankc('\t').
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enter_cell(_Self) :-
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%open('//python/sys.stdin', read, _Input, []),
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open('//python/sys.stdout', append, _Output, []),
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open('//python/sys.stdout', append, _Error, []),
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%set_prolog_flag(user_input, _Input),
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set_prolog_flag(user_output, _Output),
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set_prolog_flag(user_error, _Error).
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exit_cell(_Self) :-
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%close( user_input),
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close( user_output),
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close( user_error).
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completions(S, Self) :-
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open_mem_read_stream(S, St),
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scan_to_list(St, Tokens),
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close(St),
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reverse(Tokens, RTokens),
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strip_final_tokens(RTokens, MyTokens),
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setof( Completion, complete(MyTokens, Completion), Cs),
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Self.completions := Cs.
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strip_final_tokens(['EOT'|Ts], Ts) :- !.
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strip_final_tokens( Ts, Ts ).
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complete([E,l,C,l,A|More],
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isconsult(A),
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%B = l,
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library(C,Lib),
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%D=l,
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E=atom(Prefix),
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\+ arg( Rest ),
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check_library( Prefix, Lib, C).
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complete([E,l,C,l,-,'['|More],
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isconsult(A),
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%B = l,
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library(C,Lib),
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%D=l,
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E=atom(Prefix),
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\+ arg( Rest ),
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check_library( Prefix, Lib, C).
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complete([C,l,A|More],
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isconsult(A),
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%B = l,
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C=atom(Prefix),
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\+ arg( Rest ),
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file_or_library( Prefix, C).
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complete([C,l,-,'['|More],
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isconsult(A),
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%B = l,
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C=atom(Prefix),
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\+ arg( Rest ),
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file_or_library( Prefix, C).
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complete( [atom(F)|Rest], C) :-
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\+ arg( Rest ),
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predicate( F, Pred, Arity ),
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cont( Arity, F, Pred, C).
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isconsult( atom(use_module) ).
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isconsult( atom(ensure_loaded) ).
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isconsult( atom(compile) ).
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isconsult( atom(consult) ).
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isconsult( atom(reconsult) ).
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isconsult( atom(load_files) ).
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isconsult( '[' ).
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arg([']'|_]).
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arg([l|_]).
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file_or_library(F,C) :-
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libsym(C0),
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atom_cooncat(F,C,C0).
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file_or_library(F,C) :-
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check_file(F,C).
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check_file(F0,C) :-
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atom_concat('\'',F,F0),
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!,
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absolute_file_name( F, FF, [access(none)] ),
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atom_concat( FF, '*' , Pat),
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absolute_file_name( Pat, C0, [glob(true)] ),
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atom_concat(Pat,C00,C0),
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atom_conct(C00,'\'',C).
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check_file(F0,C) :-
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atom_concat( F0, '*' , Pat),
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absolute_file_name( Pat, C0, [glob(true)] ),
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atom_concat(Pat,C,C0).
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check_library( Lib, F, C) :-
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atom_concat( F, '*' , Pat),
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LibF =.. [Lib(Pat)],
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absolute_file_name( LibF, Lib, [glob(true)] ),
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file_directory_name( Lib, Name),
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( atom_concat(C, '.yap', Name) -> true ;
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atom_concat(C, '.ypp', Name) -> true ;
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atom_concat(C, '.prolog', Name) -> true
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).
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predicate(N,P,A) :-
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system_predicate(P0/A),
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atom_concat(N,P,P0).
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predicate(N,P,A) :-
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current_predicate(P0/A),
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atom_concat(N,P,P0).
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cont(0, F, P, P0) :-
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atom_concat( F, P, P0 ).
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cont( _, F, P, PB ):-
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atom_concat( [F, P, '('], PB ).
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