Module: Predicate::And

Includes:

NadicBool

Defined in:

lib/predicate/nodes/and.rb

Constant Summary

Constants included from Expr

Expr::OP_NEGATIONS

Instance Method Summary

• #and_split(attr_list) ⇒ Object
• #constant_variables ⇒ Object
• #operator_symbol ⇒ Object

Methods included from NadicBool

#free_variables, #priority

Methods included from Expr

#!, #&, #contradiction?, #qualify, #rename, #sexpr, #tautology?, #to_proc, #to_ruby_code, #to_sequel, #|

Methods included from Factory

#and, #between, #comp, #contradiction, #from_hash, #identifier, #in, #literal, #native, #not, #or, #qualified_identifier, #tautology

Instance Method Details

#and_split(attr_list) ⇒ Object

# File 'lib/predicate/nodes/and.rb', line 9

def and_split(attr_list)
  sexpr_body.inject([tautology, tautology]) do |(top,down),term|
    pair = term.and_split(attr_list)
    [top & pair.first, down & pair.last]
  end
end

#constant_variables ⇒ Object

# File 'lib/predicate/nodes/and.rb', line 16

def constant_variables
  sexpr_body.inject([]) do |cvars,expr|
    cvars | expr.constant_variables
  end
end

#operator_symbol ⇒ Object

# File 'lib/predicate/nodes/and.rb', line 5

def operator_symbol
  :'&&'
end