Class: BinaryexpressionNode

Inherits:
Object
  • Object
show all
Defined in:
lib/nodes.rb

Overview

Super class for arithmetic and logical expressions.

Direct Known Subclasses

ArithmeticNode, ComparisonNode, LogicalNode

Instance Method Summary collapse

Constructor Details

#initialize(lhs, op, rhs) ⇒ BinaryexpressionNode

Returns a new instance of BinaryexpressionNode.



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# File 'lib/nodes.rb', line 247

def initialize(lhs, op, rhs)
  @lhs = lhs
  @op = op
  @rhs = rhs
end

Instance Method Details

#evaluate(scope) ⇒ Object 



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# File 'lib/nodes.rb', line 253

def evaluate(scope)
  rhs_value = @rhs.evaluate(scope)

  # Dividing by 0 using using fdiv returns Infinity, raise ZeroDivisionError instead.
  if @op == :fdiv && rhs_value == 0
    raise ZeroDivisionError,"Division by 0 not possible."
  end
  return @lhs.evaluate(scope).send(@op, rhs_value)
end