Class: Dentaku::AST::Modulo

Inherits:
Arithmetic show all
Defined in:
lib/dentaku/ast/arithmetic.rb

Instance Attribute Summary

Attributes inherited from Operation

#left, #right

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Arithmetic

#type

Methods inherited from Operation

#dependencies, right_associative?

Methods inherited from Node

#dependencies

Constructor Details

#initialize(left, right = nil) ⇒ Modulo

Returns a new instance of Modulo.



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# File 'lib/dentaku/ast/arithmetic.rb', line 144

def initialize(left, right = nil)
  if right
    @left  = left
    @right = right
  else
    @right = left
  end

  unless valid_left?
    raise NodeError.new(%i[numeric nil], left.type, :left),
          "#{self.class} requires numeric operands or nil"
  end
  unless valid_right?
    raise NodeError.new(:numeric, right.type, :right),
          "#{self.class} requires numeric operands"
  end
end

Class Method Details

.arity ⇒ Object 



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# File 'lib/dentaku/ast/arithmetic.rb', line 135

def self.arity
  @arity
end

.peek(input) ⇒ Object 



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# File 'lib/dentaku/ast/arithmetic.rb', line 139

def self.peek(input)
  @arity = 1
  @arity = 2 if input.length > 1
end

.precedence ⇒ Object 



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# File 'lib/dentaku/ast/arithmetic.rb', line 178

def self.precedence
  20
end

Instance Method Details

#operator ⇒ Object 



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# File 'lib/dentaku/ast/arithmetic.rb', line 174

def operator
  :%
end

#percent? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/dentaku/ast/arithmetic.rb', line 162

def percent?
  left.nil?
end

#valid_left? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/dentaku/ast/arithmetic.rb', line 182

def valid_left?
  valid_node?(left) || left.nil?
end

#value(context = {}) ⇒ Object 



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# File 'lib/dentaku/ast/arithmetic.rb', line 166

def value(context = {})
  if percent?
    cast(right.value(context)) * 0.01
  else
    super
  end
end