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Contents
require 'sass/constant/literal'
module Sass::Constant # :nodoc:
class Number < Literal # :nodoc:
attr_reader :unit
def parse(value)
first, second, unit = value.scan(Literal::NUMBER)[0]
@value = first.empty? ? second.to_i : "#{first}#{second}".to_f
@unit = unit unless unit.empty?
end
def plus(other)
if other.is_a? Number
operate(other, :+)
elsif other.is_a? Color
other.plus(self)
else
Sass::Constant::String.from_value(self.to_s + other.to_s)
end
end
def minus(other)
if other.is_a? Number
operate(other, :-)
else
raise NoMethodError.new(nil, :minus)
end
end
def times(other)
if other.is_a? Number
operate(other, :*)
elsif other.is_a? Color
other.times(self)
else
raise NoMethodError.new(nil, :times)
end
end
def div(other)
if other.is_a? Number
operate(other, :/)
else
raise NoMethodError.new(nil, :div)
end
end
def mod(other)
if other.is_a? Number
operate(other, :%)
else
raise NoMethodError.new(nil, :mod)
end
end
def to_s
value = @value
value = value.to_i if value % 1 == 0.0
"#{value}#{@unit}"
end
protected
def self.from_value(value, unit=nil)
instance = super(value)
instance.instance_variable_set('@unit', unit)
instance
end
def operate(other, operation)
unit = nil
if other.unit.nil?
unit = self.unit
elsif self.unit.nil?
unit = other.unit
elsif other.unit == self.unit
unit = self.unit
else
raise Sass::SyntaxError.new("Incompatible units: #{self.unit} and #{other.unit}.")
end
Number.from_value(self.value.send(operation, other.value), unit)
end
end
end
Version data entries
9 entries across 9 versions & 2 rubygems