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move setup_call_cleanup/3 and call_with_inference_limit/3 to non_iso

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This commit is contained in:
Mark Thom
2019-04-23 08:40:10 -06:00
parent a5dc7f2387
commit b102749220
4 changed files with 99 additions and 91 deletions
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84
src/prolog/lib/non_iso.pl
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@@ -4,7 +4,8 @@
%% ?- use_module(library(non_iso)).
:- module(non_iso, [bb_b_put/2, bb_get/2, bb_put/2, call_cleanup/2,
forall/2]).
call_with_inference_limit/3, forall/2,
setup_call_cleanup/3]).
forall(Generate, Test) :-
\+ (Generate, \+ Test).
@@ -28,3 +29,84 @@ bb_get(Key, Value) :- atom(Key), !, '$fetch_global_var'(Key, Value).
bb_get(Key, _) :- throw(error(type_error(atom, Key), bb_get/2)).
call_cleanup(G, C) :- setup_call_cleanup(true, G, C).
% setup_call_cleanup.
setup_call_cleanup(S, G, C) :- '$get_b_value'(B),
S, '$set_cp_by_default'(B), '$get_current_block'(Bb),
( '$call_with_default_policy'(var(C)) -> throw(error(instantiation_error, setup_call_cleanup/3))
; '$call_with_default_policy'(scc_helper(C, G, Bb)) ).
:- non_counted_backtracking run_cleaners_with_handling/0.
run_cleaners_with_handling :-
'$get_scc_cleaner'(C), '$get_level'(B),
'$call_with_default_policy'(catch(C, _, true)),
'$set_cp_by_default'(B),
'$call_with_default_policy'(run_cleaners_with_handling).
run_cleaners_with_handling :-
'$restore_cut_policy'.
:- non_counted_backtracking run_cleaners_without_handling/1.
run_cleaners_without_handling(Cp) :-
'$get_scc_cleaner'(C), '$get_level'(B), C, '$set_cp_by_default'(B),
'$call_with_default_policy'(run_cleaners_without_handling(Cp)).
run_cleaners_without_handling(Cp) :-
'$set_cp_by_default'(Cp), '$restore_cut_policy'.
:- non_counted_backtracking scc_helper/3.
scc_helper(C, G, Bb) :-
'$get_cp'(Cp), '$install_scc_cleaner'(C, NBb), call(G),
( '$check_cp'(Cp) -> '$reset_block'(Bb),
'$call_with_default_policy'(run_cleaners_without_handling(Cp))
; '$call_with_default_policy'(true)
; '$reset_block'(NBb), '$fail').
scc_helper(_, _, Bb) :-
'$reset_block'(Bb), '$get_ball'(Ball),
'$call_with_default_policy'(run_cleaners_with_handling),
'$erase_ball',
'$call_with_default_policy'(throw(Ball)).
scc_helper(_, _, _) :-
'$get_cp'(Cp),
'$call_with_default_policy'(run_cleaners_without_handling(Cp)),
'$fail'.
% call_with_inference_limit
:- non_counted_backtracking end_block/4.
end_block(_, Bb, NBb, L) :-
'$clean_up_block'(NBb),
'$reset_block'(Bb).
end_block(B, Bb, NBb, L) :-
'$install_inference_counter'(B, L, _),
'$reset_block'(NBb),
'$fail'.
:- non_counted_backtracking handle_ile/3.
handle_ile(B, inference_limit_exceeded(B), inference_limit_exceeded) :- !.
handle_ile(B, E, _) :-
'$remove_call_policy_check'(B),
'$call_with_default_policy'(throw(E)).
call_with_inference_limit(G, L, R) :-
'$get_current_block'(Bb),
'$get_b_value'(B),
'$call_with_default_policy'(call_with_inference_limit(G, L, R, Bb, B)),
'$remove_call_policy_check'(B).
:- non_counted_backtracking call_with_inference_limit/5.
call_with_inference_limit(G, L, R, Bb, B) :-
'$install_new_block'(NBb),
'$install_inference_counter'(B, L, Count0),
call(G),
'$inference_level'(R, B),
'$remove_inference_counter'(B, Count1),
'$call_with_default_policy'(is(Diff, L - (Count1 - Count0))),
'$call_with_default_policy'(end_block(B, Bb, NBb, Diff)).
call_with_inference_limit(_, _, R, Bb, B) :-
'$reset_block'(Bb),
'$remove_inference_counter'(B, _),
( '$get_ball'(Ball), '$get_level'(Cp), '$set_cp_by_default'(Cp)
; '$remove_call_policy_check'(B), '$fail' ),
'$erase_ball',
'$call_with_default_policy'(handle_ile(B, Ball, R)).