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Contents
require_relative './operation'
module Dentaku
module AST
class Comparator < Operation
def self.precedence
5
end
def type
:logical
end
def operator
raise NotImplementedError
end
private
def value
yield
rescue ::ArgumentError => argument_error
raise Dentaku::ArgumentError, argument_error.message
rescue NoMethodError => no_method_error
raise Dentaku::Error, no_method_error.message
end
end
class LessThan < Comparator
def value(context = {})
super() { left.value(context) < right.value(context) }
end
def operator
return :<
end
end
class LessThanOrEqual < Comparator
def value(context = {})
super() { left.value(context) <= right.value(context) }
end
def operator
return :<=
end
end
class GreaterThan < Comparator
def value(context = {})
super() { left.value(context) > right.value(context) }
end
def operator
return :>
end
end
class GreaterThanOrEqual < Comparator
def value(context = {})
super() { left.value(context) >= right.value(context) }
end
def operator
return :>=
end
end
class NotEqual < Comparator
def value(context = {})
super() { left.value(context) != right.value(context) }
end
def operator
return :!=
end
end
class Equal < Comparator
def value(context = {})
super() { left.value(context) == right.value(context) }
end
def operator
return :==
end
end
end
end
Version data entries
9 entries across 9 versions & 1 rubygems