mirror of
https://github.com/haml/haml.git
synced 2022-11-09 12:33:31 -05:00
53 lines
1.2 KiB
Ruby
53 lines
1.2 KiB
Ruby
# Let the subclasses see the superclass
|
|
module Sass::Constant; class Literal; end; end; # :nodoc:
|
|
|
|
require 'sass/constant/string'
|
|
require 'sass/constant/number'
|
|
require 'sass/constant/color'
|
|
|
|
class Sass::Constant::Literal # :nodoc:
|
|
# The regular expression matching numbers.
|
|
NUMBER = /^(-?\d*?\.?)(\d+)([^\d\s]*)$/
|
|
|
|
html_color_matcher = Sass::Constant::Color::HTML4_COLORS.keys.map { |c| "^#{c}$" }.join '|'
|
|
|
|
# The regular expression matching colors.
|
|
COLOR = /^\# (?: [\da-f]{3} | [\da-f]{6} ) | #{html_color_matcher}/ix
|
|
|
|
def self.parse(value)
|
|
case value
|
|
when NUMBER
|
|
Sass::Constant::Number.new(value)
|
|
when COLOR
|
|
Sass::Constant::Color.new(value)
|
|
else
|
|
Sass::Constant::String.new(value)
|
|
end
|
|
end
|
|
|
|
def initialize(value = nil)
|
|
self.parse(value) if value
|
|
end
|
|
|
|
def perform
|
|
self
|
|
end
|
|
|
|
def concat(other)
|
|
Sass::Constant::String.from_value("#{self.to_s} #{other.to_s}")
|
|
end
|
|
|
|
attr_reader :value
|
|
|
|
protected
|
|
|
|
def self.filter_value(value)
|
|
value
|
|
end
|
|
|
|
def self.from_value(value)
|
|
instance = self.new
|
|
instance.instance_variable_set('@value', self.filter_value(value))
|
|
instance
|
|
end
|
|
end
|