Class Sass::Tree::MixinNode
In: lib/sass/tree/mixin_node.rb
Parent: Node

A dynamic node representing a mixin include.

@see Sass::Tree

Methods

_perform   new  

Public Class methods

@param name [String] The name of the mixin @param args [Array<Script::Node>] The arguments to the mixin

[Source]

    # File lib/sass/tree/mixin_node.rb, line 10
10:     def initialize(name, args)
11:       @name = name
12:       @args = args
13:       super()
14:     end

Protected Instance methods

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

[Source]

    # File lib/sass/tree/mixin_node.rb, line 26
26:     def _perform(environment)
27:       raise Sass::SyntaxError.new("Undefined mixin '#{@name}'.", @line) unless mixin = environment.mixin(@name)
28: 
29:       raise Sass::SyntaxError.new("Mixin \#{@name} takes \#{mixin.args.size} argument\#{'s' if mixin.args.size != 1}\n but \#{@args.size} \#{@args.size == 1 ? 'was' : 'were'} passed.\n".gsub("\n", "")) if mixin.args.size < @args.size
30: 
31:       environment = mixin.args.zip(@args).
32:         inject(Sass::Environment.new(mixin.environment)) do |env, ((var, default), value)|
33:         env.set_local_var(var.name,
34:           if value
35:             value.perform(environment)
36:           elsif default
37:             default.perform(env)
38:           end)
39:         raise Sass::SyntaxError.new("Mixin #{@name} is missing parameter #{var.inspect}.") unless env.var(var.name)
40:         env
41:       end
42:       mixin.tree.map {|c| c.perform(environment)}.flatten
43:     end

[Validate]