module Finitio module Syntax module Expr module LogicDyadic include Expr capture :left, :op, :right def to_proc_source l, r = left.to_proc_source, right.to_proc_source "(#{l} #{op} #{r})" end def _free_variables(fvs) left._free_variables(fvs) right._free_variables(fvs) end end # module LogicDyadic end # module Expr end # module Syntax end # module Finitio