Module: Predicate::Not

Includes:

Expr

Defined in:

lib/predicate/nodes/not.rb

Constant Summary

Constants included from Expr

Expr::OP_NEGATIONS

Instance Method Summary

• #! ⇒ Object
• #evaluate(tuple) ⇒ Object
• #free_variables ⇒ Object
• #operator_symbol ⇒ Object
• #priority ⇒ Object

Methods included from Expr

#&, #and_split, #attr_split, #bind, #constant_variables, #constants, #contradiction?, #dyadic_priority, #identifier?, #literal?, #opaque?, #qualify, #rename, #sexpr, #tautology?, #to_hash, #to_postgres, #to_s, #to_sequel, #unqualify, #|

Methods included from Factory

#_factor_predicate, #and, #comp, #contradiction, #empty, #from_hash, #h, #has_size, #identifier, #in, #literal, #match, #native, #not, #opaque, #or, #pg_array_empty, #pg_array_literal, #pg_array_overlaps, #placeholder, #qualified_identifier, #sexpr, #tautology, #var, #vars

Instance Method Details

#! ⇒ Object

# File 'lib/predicate/nodes/not.rb', line 11

def !
  last
end

#evaluate(tuple) ⇒ Object

# File 'lib/predicate/nodes/not.rb', line 19

def evaluate(tuple)
  !last.evaluate(tuple)
end

#free_variables ⇒ Object

# File 'lib/predicate/nodes/not.rb', line 15

def free_variables
  @free_variables ||= last.free_variables
end

#operator_symbol ⇒ Object

# File 'lib/predicate/nodes/not.rb', line 5

def operator_symbol
  :'!'
end

#priority ⇒ Object

# File 'lib/predicate/nodes/not.rb', line 9

def priority; 90; end