Class: MathEngine::Node

Inherits:

Object

• Object
• MathEngine::Node

Defined in:

lib/nodes.rb

Direct Known Subclasses

AdditionNode, AssignmentNode, DivisionNode, ExponentNode, ExpressionNode, FunctionCallNode, IdentifierNode, LiteralNumberNode, ModulusNode, MultiplicationNode, ParametersNode, ParenthesisedExpressionNode, SubtractionNode

Instance Attribute Summary

• #left ⇒ Object (also: #value) readonly

  Returns the value of attribute left.

• #right ⇒ Object readonly

  Returns the value of attribute right.

Instance Method Summary

• #evaluate(evaluator) ⇒ Object
• #initialize(left, right = nil) ⇒ Node constructor

  A new instance of Node.

Constructor Details

#initialize(left, right = nil) ⇒ Node

Returns a new instance of Node.

# File 'lib/nodes.rb', line 6

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

Instance Attribute Details

#left ⇒ Object (readonly) Also known as: value

Returns the value of attribute left.

# File 'lib/nodes.rb', line 3

def left
  @left
end

#right ⇒ Object (readonly)

Returns the value of attribute right.

# File 'lib/nodes.rb', line 3

def right
  @right
end

Instance Method Details

#evaluate(evaluator) ⇒ Object

# File 'lib/nodes.rb', line 10

def evaluate(evaluator)
  evaluator.send(method_name, self)
end