naga.rules — org.clojars.quoll/naga 0.2.24

Defines rule structures and constructors to keep them consistent

check-symbol clj/s

(check-symbol sym)

Asserts that symbols are unbound variables for a query. Return true if it passes.

compatible clj/s

(compatible x y)

create-program clj/s

(create-program rules axioms)

Inputs: [rules :- [Rule] axioms :- [Axiom]] Returns: Program

Converts a sequence of rules into a program. A program consists of a map of rule names to rules, where the rules have dependencies.

dbg clj/s

(dbg x)

find-matches clj/s

(find-matches a [nm sb])

Inputs: [a :- EPVPattern [nm sb] :- [(s/one s/Str "rule-name") (s/one Body "body")]] Returns: [RulePatternPair]

returns a sequence of name/pattern pairs where a matches a pattern in a named rule

mark-unbound clj/s

(mark-unbound head body)

Convert a head to use fresh vars for any vars that are unbound. Scans the vars in the body to identify which vars are unbound.

match? clj/s

(match? a b)

Inputs: [a :- EPVPattern b :- EPVPattern] Returns: s/Bool

Does pattern a match pattern b?

named-rule clj/s

(named-rule name {:keys [head body salience downstream]})

Inputs: [name :- Rule {:keys [head body salience downstream]} :- s/Str] Returns: Rule

Creates a rule the same as an existing rule, with a different name.

r clj/s macro

(r & [f :as rs])

Create a rule, with an optional name. Var symbols need not be quoted.

regen-rewrite clj/s

(regen-rewrite head body)

Rewrites rules that are generating new entities to avoid them in future iterations. This requires the generated entities to be subtracted from the patterns in the rule body.

rule clj/s≠

clj

(rule head body)

(rule head body name)

cljs

(rule G__6473 G__6474)

(rule G__6478 G__6479 G__6480)

Inputs: ([head body] [head body name]) Returns: Rule

Creates a new rule

var-for* clj/s

(var-for* fv)