Prolog "bundler"

Admin User, erstellt 04. Jan. 2024
         
/**
* Modern Albufeira Prolog Interpreter
*
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* provided by XLOG Technologies AG.
*
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* reproduce, change and translate the information.
*
* Reproduction is restricted to the whole unaltered document. Reproduction
* of the information is only allowed for non-commercial uses. Selling,
* giving away or letting of the execution of the library is prohibited.
* The library can be distributed as part of your applications and libraries
* for execution provided this comment remains unchanged.
*
* Restrictions
* Only to be distributed with programs that add significant and primary
* functionality to the library. Not to be distributed with additional
* software intended to replace any components of the library.
*
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*/
/*******************************************************************/
/* Bundler JavaScript */
/*******************************************************************/
/**
* bundle_add(A, B):
* bundle_add(A, B, O):
* The predicate succeeds in appending the JavaScript files
* A to the JavaScript file B, converting JavaScript to
* common JavaScript. The bundler silently overwrites an already
* existing JavaScript file B. The ternary predicate allows
* specifying bundle options.
*/
% bundle_add(+Atom, +Atom)
bundle_add(InName, OutName) :-
bundle_add(InName, OutName, []).
% bundle_add(+Atom, +Atom, +List)
bundle_add(InName, OutName, Opt) :-
decode_bundle_opts(Opt, 0, Flags),
setup_once_cleanup(
open(OutName, append, OutStream),
bundle_file(InName, OutStream, Flags),
close(OutStream)).
/**
* bundle_file(A, S, F):
* Copy the file A into the stream S, converting JavaScript
* to JavaScript determined by the flags F.
*/
% bundle_file(+Atom, +Stream, +Integer)
bundle_file(InName, OutStream, Flags) :-
setup_once_cleanup(
open(InName, read, InStream),
sys_bundle_lines(InStream, OutStream, Flags),
close(InStream)).
% sys_bundle_lines(+Stream, +Stream, +Integer)
sys_bundle_lines(InStream, OutStream, Flags) :-
repeat,
get_atom(InStream, 0'\n, Line),
(Line \== '' ->
sys_bundle_line(Line, Line2, InStream, Flags),
write(OutStream, Line2), fail; !).
% sys_bundle_line(+Atom, -Atom, +Stream, +Integer)
sys_bundle_line(Line, _, InStream, _) :-
atom_concat('/*', _, Line), !,
(Line2 = Line; enum_lines(InStream, Line2)),
atom_concat(_, '*/\n', Line2), !, fail.
/* export handling */
sys_bundle_line(Line, Line2, _, Flags) :- Flags /\ 1 =:= 0,
atom_concat('export ', B, Line), !,
B = Line2.
/* import handling */
sys_bundle_line(Line, _, InStream, Flags) :- Flags /\ 4 =:= 0,
atom_concat('import ', _, Line), !,
(Line2 = Line; enum_lines(InStream, Line2)),
atom_concat(_, ';\n', Line2), !, fail.
sys_bundle_line(Line, Line, _, _).
/*******************************************************************/
/* Decode Bundle Options */
/*******************************************************************/
% decode_bundle_opts(+List, +Integer, -Integer)
decode_bundle_opts(V, _, _) :- var(V),
throw(error(instantiation_error,_)).
decode_bundle_opts([X|L], I, O) :- !,
decode_bundle_opt(X, I, H),
decode_bundle_opts(L, H, O).
decode_bundle_opts([], H, H) :- !.
decode_bundle_opts(L, _, _) :-
throw(error(type_error(list,L),_)).
% decode_bundle_opt(+Option, +Triple, -Triple)
decode_bundle_opt(V, _, _) :- var(V),
throw(error(instantiation_error,_)).
decode_bundle_opt(keep_export(B), F, G) :- !,
sys_opt_boolean(B, 1, F, G).
decode_bundle_opt(keep_import(B), F, G) :- !,
sys_opt_boolean(B, 4, F, G).
decode_bundle_opt(O, _, _) :-
throw(error(type_error(bundle_option,O),_)).