package acgtk

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package acgtk
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type rule = Datalog_AbstractSyntax.AbstractSyntax.Rule.rule = {
  1. id : int;
  2. lhs : Datalog_AbstractSyntax.AbstractSyntax.Predicate.predicate;
  3. e_rhs : (Datalog_AbstractSyntax.AbstractSyntax.Predicate.predicate * int) list;
    (*

    represents the extensionnal predicates of the rule. The int represents the position in the rule

    *)
  4. i_rhs : (Datalog_AbstractSyntax.AbstractSyntax.Predicate.predicate * int) list;
    (*

    represents the intensionnal predicates of the rule. The int represents the position in the rule

    *)
  5. i_rhs_num : int;
    (*

    stores the number of intensional predicates occurring in the rule

    *)
  6. rhs_num : int;
    (*

    stores the number of predicates occurring in the rule body

    *)
}
val pp : ?with_position:bool -> ?with_id:bool -> ?with_arity:bool -> Datalog_AbstractSyntax.AbstractSyntax.Predicate.PredIdTable.table -> Datalog_AbstractSyntax.ConstGen.Table.table -> Stdlib.Format.formatter -> rule -> unit
module Rules : Stdlib.Set.S with type elt = rule
module RuleMap : Stdlib.Map.S with type key = rule
val extend_head_id_map_to_rules : Datalog_AbstractSyntax.AbstractSyntax.Predicate.pred_id -> rule -> Rules.t DatalogLib.Datalog_AbstractSyntax.AbstractSyntax.Predicate.PredIdMap.t -> Rules.t DatalogLib.Datalog_AbstractSyntax.AbstractSyntax.Predicate.PredIdMap.t
val set_new_id : int -> rule -> rule

set_new_id id rule returns a rule similar to rule except that its id is id

set_new_id_from_gen returns pair (rule',from_gen') wherer rule' is a rule similar to rule excepts that it has a new id generated from from_gen generator, and the latter has been updated to from_gen'.

val get_variables_in_rule : rule -> DatalogLib.Datalog_AbstractSyntax.AbstractSyntax.Predicate.TermSet.t

get_variables_in_rule rule returns the set of variables in the rule rule

get_subgoal rule i returns the predicate at the position i in the body of the rule rule

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