new mapargs
This commit is contained in:
Vítor Santos Costa
parent
8c9025cdb4
commit
b64965f22c
@ -20,8 +20,6 @@
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maplist/4, % :Goal, ?List1, ?List2, ?List
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maplist/5, % :Goal, ?List1, ?List2, ?List3, List4
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convlist/3,
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mapargs/3,
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sumargs/4,
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mapnodes/3,
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checknodes/2,
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sumlist/4,
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@ -33,6 +31,7 @@
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foldl/4, % :Pred, +List, ?V0, ?V
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foldl2/6, % :Pred, +List, ?V0, ?V, ?W0, ?W
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foldl2/7, % :Pred, +List1, ?List2, ?V0, ?V, ?W0, ?W
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foldl2/8, % :Pred, +List1, ?List2, ?List3, ?V0, ?V, ?W0, ?W
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foldl3/8, % :Pred, +List, ?V0, ?V, ?W0, ?W
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foldl4/10, % :Pred, +List, ?V0, ?V, ?W0, ?W, ...
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foldl/5, % :Pred, +List1, +List2, ?V0, ?V
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@ -73,6 +72,7 @@
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foldl(3, +, +, -),
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foldl2(5, +, +, -, +, -),
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foldl2(6, +, ?, +, -, +, -),
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foldl2(6, +, ?, ?, +, -, +, -),
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foldl3(5, +, +, -, +, -, +, -),
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foldl4(7, +, +, -, +, -, +, -, +, -),
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foldl(4, +, +, +, -),
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@ -83,7 +83,7 @@
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scanl(5, +, +, +, +, -),
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scanl(6, +, +, +, +, +, -).
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:- use_module(library(maputils)).
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:- use_module(library(lists), [append/3]).
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:- use_module(library(charsio), [format_to_chars/3, read_from_chars/2]).
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:- use_module(library(error), [must_be/2]).
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@ -370,11 +370,19 @@ foldl2_([H|T], Goal, V0, V, W0, W) :-
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foldl2(Goal, List1, List2, V0, V, W0, W) :-
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foldl2_(List1, List2, Goal, V0, V, W0, W).
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foldl2_([], [], _, V, V, W, W).
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foldl2_([], [], [], V, V, W, W).
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foldl2_([H1|T1], [H2|T2], Goal, V0, V, W0, W) :-
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call(Goal, H1, H2, V0, V1, W0, W1),
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foldl2_(T1, T2, Goal, V1, V, W1, W).
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foldl2(Goal, List1, List2, List3, V0, V, W0, W) :-
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foldl2_(List1, List2, List3, Goal, V0, V, W0, W).
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foldl2_([], [], [], [], V, V, W, W).
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foldl2_([H1|T1], [H2|T2], [H3|T3], Goal, V0, V, W0, W) :-
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call(Goal, H1, H2, H3, V0, V1, W0, W1),
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foldl2_(T1, T2, T3, Goal, V1, V, W1, W).
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foldl3(Goal, List, V0, V, W0, W, X0, X) :-
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foldl3_(List, Goal, V0, V, W0, W, X0, X).
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@ -449,10 +457,6 @@ scanl_([H1|T1], [H2|T2], [H3|T3], [H4|T4], Goal, V, [VH|VT]) :-
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scanl_(T1, T2, T3, T4, Goal, VH, VT).
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:- dynamic number_of_expansions/1.
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number_of_expansions(0).
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goal_expansion(checklist(Meta, List), Mod:Goal) :-
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goal_expansion_allowed,
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callable(Meta),
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@ -863,6 +867,27 @@ goal_expansion(foldl2(Meta, List1, List2, AccIn, AccOut, W0, W), Mod:Goal) :-
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(RecursionHead :- Apply, RecursiveCall)
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], Mod).
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goal_expansion(foldl2(Meta, List1, List2, List3, AccIn, AccOut, W0, W), Mod:Goal) :-
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goal_expansion_allowed,
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callable(Meta),
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prolog_load_context(module, Mod),
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aux_preds(Meta, MetaVars, Pred, PredVars, Proto),
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!,
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% the new goal
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pred_name(foldl2, 7, Proto, GoalName),
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append(MetaVars, [List1, List2, List3, AccIn, AccOut, W0, W], GoalArgs),
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Goal =.. [GoalName|GoalArgs],
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% the new predicate declaration
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HeadPrefix =.. [GoalName|PredVars],
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append_args(HeadPrefix, [[], [], [], Acc, Acc, W, W], Base),
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append_args(HeadPrefix, [[In1|Ins1], [In2|Ins2], [In3|Ins3], Acc1, Acc2, W1, W2], RecursionHead),
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append_args(Pred, [In1, In2, In3, Acc1, Acc3, W1, W3], Apply),
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append_args(HeadPrefix, [Ins1, Ins2, Ins3, Acc3, Acc2, W3, W2], RecursiveCall),
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compile_aux([
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Base,
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(RecursionHead :- Apply, RecursiveCall)
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], Mod).
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goal_expansion(foldl3(Meta, List, AccIn, AccOut, W0, W, X0, X), Mod:Goal) :-
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goal_expansion_allowed,
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callable(Meta),
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@ -1053,79 +1078,3 @@ user:goal_expansion(phrase(NT,Xs0,Xs), Mod, NewGoal) :-
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:- hide('$translate_rule').
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*/
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%%%%%%%%%%%%%%%%%%%%
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% utilities
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%%%%%%%%%%%%%%%%%%%%
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compile_aux([Clause|Clauses], Module) :-
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% compile the predicat declaration if needed
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( Clause = (Head :- _)
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; Clause = Head ),
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!,
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functor(Head, F, N),
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( current_predicate(Module:F/N)
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->
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true
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;
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% format("*** Creating auxiliary predicate ~q~n", [F/N]),
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% checklist(portray_clause, [Clause|Clauses]),
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compile_term([Clause|Clauses], Module)
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).
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compile_term([], _).
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compile_term([Clause|Clauses], Module) :-
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assert_static(Module:Clause),
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compile_term(Clauses, Module).
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append_args(Term, Args, NewTerm) :-
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Term =.. [Meta|OldArgs],
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append(OldArgs, Args, GoalArgs),
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NewTerm =.. [Meta|GoalArgs].
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aux_preds(Meta, _, _, _, _) :-
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var(Meta), !,
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fail.
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aux_preds(_:Meta, MetaVars, Pred, PredVars, Proto) :- !,
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aux_preds(Meta, MetaVars, Pred, PredVars, Proto).
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aux_preds(Meta, MetaVars, Pred, PredVars, Proto) :-
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Meta =.. [F|Args],
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aux_args(Args, MetaVars, PredArgs, PredVars, ProtoArgs),
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Pred =.. [F|PredArgs],
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Proto =.. [F|ProtoArgs].
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aux_args([], [], [], [], []).
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aux_args([Arg|Args], MVars, [Arg|PArgs], PVars, [Arg|ProtoArgs]) :-
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ground(Arg), !,
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aux_args(Args, MVars, PArgs, PVars, ProtoArgs).
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aux_args([Arg|Args], [Arg|MVars], [PVar|PArgs], [PVar|PVars], ['_'|ProtoArgs]) :-
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aux_args(Args, MVars, PArgs, PVars, ProtoArgs).
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pred_name(Macro, Arity, _ , Name) :-
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transformation_id(Id),
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atomic_concat(['$$$__Auxiliary_predicate__ for ',Macro,'/',Arity,' ',Id], Name).
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transformation_id(Id) :-
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retract(number_of_expansions(Id)),
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Id1 is Id+1,
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assert(number_of_expansions(Id1)).
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harmless_dcgexception(instantiation_error). % ex: phrase(([1],x:X,[3]),L)
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harmless_dcgexception(type_error(callable,_)). % ex: phrase(27,L)
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%% contains_illegal_dcgnt(+Term) is semidet.
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%
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% True if Term contains a non-terminal we cannot deal with using
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% goal-expansion. The test is too general approximation, but safe.
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contains_illegal_dcgnt(NT) :-
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sub_term(I, NT),
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nonvar(I),
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( I = ! ; I = phrase(_,_,_) ), !.
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% write(contains_illegal_nt(NT)), % JW: we do not want to write
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% nl.
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goal_expansion_allowed :-
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once( prolog_load_context(_, _) ), % make sure we are compiling.
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\+ current_prolog_flag(xref, true).
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