Sha256: 95fbbc37e75a24db15da76851d9a39dfaf88cf9a1f707db453c379684dac6c7d
Contents?: true
Size: 1.21 KB
Versions: 175
Compression:
Stored size: 1.21 KB
Contents
module Sass::Script
# A SassScript parse node representing a unary operation,
# such as `-!b` or `not true`.
#
# Currently only `-`, `/`, and `not` are unary operators.
class UnaryOperation < Node
# @param operand [Script::Node] The parse-tree node
# for the object of the operator
# @param operator [Symbol] The operator to perform
def initialize(operand, operator)
@operand = operand
@operator = operator
end
# @return [String] A human-readable s-expression representation of the operation
def inspect
"(#{@operator.inspect} #{@operand.inspect})"
end
# Evaluates the operation.
#
# @param environment [Sass::Environment] The environment in which to evaluate the SassScript
# @return [Literal] The SassScript object that is the value of the operation
# @raise [Sass::SyntaxError] if the operation is undefined for the operand
def perform(environment)
operator = "unary_#{@operator}"
literal = @operand.perform(environment)
literal.send(operator)
rescue NoMethodError => e
raise e unless e.name.to_s == operator.to_s
raise Sass::SyntaxError.new("Undefined unary operation: \"#{@operator} #{literal}\".")
end
end
end
Version data entries
175 entries across 174 versions & 7 rubygems