class Sass::Tree::MixinNode
@see Sass::Tree
to add the mixin to the backtrace.
When in a static tree, the sole purpose is to wrap exceptions
A static node representing a mixin include.
def _cssize(extends, parent)
- See: Node#_cssize -
def _cssize(extends, parent) children.map do |c| parent.check_child! c c.cssize(extends, parent) end.flatten rescue Sass::SyntaxError => e e.modify_backtrace(:mixin => @name, :filename => filename, :line => line) e.add_backtrace(:filename => filename, :line => line) raise e end
def cssize(extends, parent = nil)
- See: Node#cssize -
def cssize(extends, parent = nil) _cssize(extends, parent) # Pass on the parent even if it's not a MixinNode end
def handle_include_loop!(environment)
def handle_include_loop!(environment) msg = "An @include loop has been found:" mixins = environment.stack.map {|s| s[:mixin]}.compact if mixins.size == 2 && mixins[0] == mixins[1] raise Sass::SyntaxError.new("#{msg} #{@name} includes itself") end mixins << @name msg << "\n" << Haml::Util.enum_cons(mixins, 2).map do |m1, m2| " #{m1} includes #{m2}" end.join("\n") raise Sass::SyntaxError.new(msg) end
def initialize(name, args)
-
args
(Array
) -- The arguments to the mixin -
name
(String
) -- The name of the mixin
def initialize(name, args) @name = name @args = args super() end
def options=(opts)
- See: Node#options= -
def options=(opts) super @args.each {|a| a.context = :equals} if opts[:sass2] end
def perform!(environment)
- See: Sass::Tree -
Raises:
-
(Sass::SyntaxError)
- if an incorrect number of arguments was passed -
(Sass::SyntaxError)
- if there is no mixin with the given name
Parameters:
-
environment
(Sass::Environment
) -- The lexical environment containing
def perform!(environment) handle_include_loop!(environment) if environment.mixins_in_use.include?(@name) original_env = environment original_env.push_frame(:filename => filename, :line => line) original_env.prepare_frame(:mixin => @name) raise Sass::SyntaxError.new("Undefined mixin '#{@name}'.") unless mixin = environment.mixin(@name) raise Sass::SyntaxError.new(<<END.gsub("\n", "")) if mixin.args.size < @args.size n #{@name} takes #{mixin.args.size} argument#{'s' if mixin.args.size != 1} #{@args.size} #{@args.size == 1 ? 'was' : 'were'} passed. environment = mixin.args.zip(@args). inject(Sass::Environment.new(mixin.environment)) do |env, ((var, default), value)| env.set_local_var(var.name, if value value.perform(environment) elsif default val = default.perform(env) if default.context == :equals && val.is_a?(Sass::Script::String) val = Sass::Script::String.new(val.value) end val end) raise Sass::SyntaxError.new("Mixin #{@name} is missing parameter #{var.inspect}.") unless env.var(var.name) env end self.children = mixin.tree.map {|c| c.perform(environment)}.flatten rescue Sass::SyntaxError => e if original_env # Don't add backtrace info if this is an @include loop e.modify_backtrace(:mixin => @name, :line => @line) e.add_backtrace(:line => @line) end raise e ensure original_env.pop_frame if original_env end
def to_src(tabs, opts, fmt)
- See: Node#to_src -
def to_src(tabs, opts, fmt) args = '(' + @args.map {|a| a.to_sass(opts)}.join(", ") + ')' unless @args.empty? "#{' ' * tabs}#{fmt == :sass ? '+' : '@include '}#{dasherize(@name, opts)}#{args}#{semi fmt}\n" end