Module: Alf::Predicate::VarRef

Includes:: Expr

Defined in:: lib/alf-predicate/alf/predicate/nodes/var_ref.rb

Constant Summary

Constants included from Expr

Expr::OP_NEGATIONS

Instance Method Summary collapse

Methods included from Expr

#!, #&, #and_split, #constant_variables, #contradiction?, #rename, #sexpr, #tautology?, #to_proc, #to_ruby_code, #|

Methods included from Factory

#_factor_predicate, #and, #between, #comp, #contradiction, #in, #literal, #native, #not, #or, #relation, #sexpr, #tautology, #var_ref

Instance Method Details

#free_variables ⇒ `Object`



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# File 'lib/alf-predicate/alf/predicate/nodes/var_ref.rb', line 14

def free_variables
  @free_variables ||= AttrList[ var_name ]
end

#priority ⇒ `Object`



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# File 'lib/alf-predicate/alf/predicate/nodes/var_ref.rb', line 6

def priority
  100
end

#var_name ⇒ `Object`



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# File 'lib/alf-predicate/alf/predicate/nodes/var_ref.rb', line 10

def var_name
  self[1]
end