Class: MinusNode

Inherits:

UnaryNode

• Object
• UnaryNode
• MinusNode

Defined in:

lib/ast.rb

Instance Attribute Summary

Attributes inherited from UnaryNode

#subTree

Instance Method Summary

• #evaluate ⇒ Object
• #initialize(subTree) ⇒ MinusNode constructor

  A new instance of MinusNode.

Constructor Details

#initialize(subTree) ⇒ MinusNode

Returns a new instance of MinusNode.

# File 'lib/ast.rb', line 65

def initialize(subTree)
  super(subTree)
end

Instance Method Details

#evaluate ⇒ Object

# File 'lib/ast.rb', line 69

def evaluate
  val = subTree.evaluate.to_i
  $calc.memory -= val
end