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# frozen_string_literal: true
module Sass
module Value
# Sass's calculation type.
#
# @see https://sass-lang.com/documentation/js-api/classes/sasscalculation/
class Calculation
include Value
include CalculationValue
class << self
private :new
# @param argument [CalculationValue]
# @return [Calculation]
def calc(argument)
new('calc', [argument])
end
# @param arguments [Array<CalculationValue>]
# @return [Calculation]
def min(arguments)
new('min', arguments)
end
# @param arguments [Array<CalculationValue>]
# @return [Calculation]
def max(arguments)
new('max', arguments)
end
# @param min [CalculationValue]
# @param value [CalculationValue]
# @param max [CalculationValue]
# @return [Calculation]
def clamp(min, value = nil, max = nil)
if (value.nil? && !valid_clamp_arg?(min)) ||
(max.nil? && [min, value].none? { |x| x && valid_clamp_arg?(x) })
raise Sass::ScriptError, 'Argument must be an unquoted SassString.'
end
new('clamp', [min, value, max].compact)
end
private
def valid_clamp_arg?(value)
value.is_a?(Sass::Value::String) && !value.quoted?
end
end
private
def initialize(name, arguments)
arguments.each do |value|
assert_calculation_value(value)
end
@name = name.freeze
@arguments = arguments.freeze
end
public
# @return [::String]
attr_reader :name
# @return [Array<CalculationValue>]
attr_reader :arguments
# @return [Calculation]
def assert_calculation(_name = nil)
self
end
# @return [::Boolean]
def ==(other)
other.is_a?(Sass::Value::Calculation) &&
other.name == name &&
other.arguments == arguments
end
# @return [Integer]
def hash
@hash ||= [name, *arguments].hash
end
end
end
end
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