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Versions: 52
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Contents
require 'sass/tree/node'
module Sass::Tree
# A dynamic node representing a mixin include.
#
# @see Sass::Tree
class MixinNode < Node
# @param name [String] The name of the mixin
# @param args [Array<Script::Node>] The arguments to the mixin
def initialize(name, args)
@name = name
@args = args
super()
end
protected
# Runs the mixin.
#
# @param environment [Sass::Environment] The lexical environment containing
# variable and mixin values
# @return [Array<Tree::Node>] The resulting static nodes
# @raise [Sass::SyntaxError] if there is no mixin with the given name
# @raise [Sass::SyntaxError] if an incorrect number of arguments was passed
# @see Sass::Tree
def _perform(environment)
raise Sass::SyntaxError.new("Undefined mixin '#{@name}'.", @line) unless mixin = environment.mixin(@name)
raise Sass::SyntaxError.new(<<END.gsub("\n", "")) if mixin.args.size < @args.size
Mixin #{@name} takes #{mixin.args.size} argument#{'s' if mixin.args.size != 1}
but #{@args.size} #{@args.size == 1 ? 'was' : 'were'} passed.
END
environment = mixin.args.zip(@args).
inject(Sass::Environment.new(mixin.environment)) do |env, ((name, default), value)|
env.set_local_var(name,
if value
value.perform(environment)
elsif default
default.perform(env)
end)
raise Sass::SyntaxError.new("Mixin #{@name} is missing parameter !#{name}.") unless env.var(name)
env
end
mixin.tree.map {|c| c.perform(environment)}.flatten
end
end
end
Version data entries
52 entries across 52 versions & 2 rubygems