Module: Purple::Infix::PrecedenceTable

Defined in:
lib/purple/infix.rb

Defined Under Namespace

Classes: Operator

Class Method Summary collapse

Class Method Details

.infix_operator?(operator) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/purple/infix.rb', line 17

def self.infix_operator?(operator)
  !lookup(operator).nil?
end

.lookup(operator) ⇒ Object 



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# File 'lib/purple/infix.rb', line 21

def self.lookup(operator)
  @operators[operator]
end

.op(associativity, *operators) ⇒ Object 



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# File 'lib/purple/infix.rb', line 25

def self.op(associativity, *operators)
  @precedence ||= 0
  @operators ||= {}
  operators.each do |operator|
    @operators[operator] = Operator.new(@precedence, associativity)
  end
  @precedence += 1
end