Class: Dentaku::AST::Arithmetic

Inherits:

Operation

• Object
• Node
• Operation
• Dentaku::AST::Arithmetic

Defined in:

lib/dentaku/ast/arithmetic.rb

Direct Known Subclasses

Addition, Division, Exponentiation, Modulo, Multiplication, Negation, Subtraction

Instance Attribute Summary

Attributes inherited from Operation

#left, #right

Instance Method Summary

• #initialize ⇒ Arithmetic constructor

  A new instance of Arithmetic.

• #operator ⇒ Object
• #type ⇒ Object
• #value(context = {}) ⇒ Object

Methods inherited from Operation

#dependencies, right_associative?

Methods inherited from Node

arity, #dependencies, precedence

Constructor Details

#initialize ⇒ Arithmetic

# File 'lib/dentaku/ast/arithmetic.rb', line 8

def initialize(*)
  super
  unless valid_left? && valid_right?
    fail ParseError, "#{ self.class } requires numeric operands"
  end
end

Instance Method Details

#operator ⇒ Object

# File 'lib/dentaku/ast/arithmetic.rb', line 19

def operator
  raise "Not implemented"
end

#type ⇒ Object

# File 'lib/dentaku/ast/arithmetic.rb', line 15

def type
  :numeric
end

#value(context = {}) ⇒ Object

# File 'lib/dentaku/ast/arithmetic.rb', line 23

def value(context={})
  l = cast(left.value(context))
  r = cast(right.value(context))
  l.public_send(operator, r)
end