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# A visitor for setting options on the Sass tree
class Sass::Tree::Visitors::SetOptions < Sass::Tree::Visitors::Base
# @param root [Tree::Node] The root node of the tree to visit.
# @param options [{Symbol => Object}] The options has to set.
def self.visit(root, options); new(options).send(:visit, root); end
protected
def initialize(options)
@options = options
end
def visit(node)
node.instance_variable_set('@options', @options)
super
end
def visit_comment(node)
node.value.each {|c| c.options = @options if c.is_a?(Sass::Script::Tree::Node)}
yield
end
def visit_debug(node)
node.expr.options = @options
yield
end
def visit_error(node)
node.expr.options = @options
yield
end
def visit_each(node)
node.list.options = @options
yield
end
def visit_extend(node)
node.selector.each {|c| c.options = @options if c.is_a?(Sass::Script::Tree::Node)}
yield
end
def visit_for(node)
node.from.options = @options
node.to.options = @options
yield
end
def visit_function(node)
node.args.each do |k, v|
k.options = @options
v.options = @options if v
end
node.splat.options = @options if node.splat
yield
end
def visit_if(node)
node.expr.options = @options if node.expr
visit(node.else) if node.else
yield
end
def visit_import(node)
# We have no good way of propagating the new options through an Engine
# instance, so we just null it out. This also lets us avoid caching an
# imported Engine along with the importing source tree.
node.imported_file = nil
yield
end
def visit_mixindef(node)
node.args.each do |k, v|
k.options = @options
v.options = @options if v
end
node.splat.options = @options if node.splat
yield
end
def visit_mixin(node)
node.args.each {|a| a.options = @options}
node.keywords.each {|_k, v| v.options = @options}
node.splat.options = @options if node.splat
node.kwarg_splat.options = @options if node.kwarg_splat
yield
end
def visit_prop(node)
node.name.each {|c| c.options = @options if c.is_a?(Sass::Script::Tree::Node)}
node.value.each {|c| c.options = @options if c.is_a?(Sass::Script::Tree::Node)}
yield
end
def visit_return(node)
node.expr.options = @options
yield
end
def visit_rule(node)
node.rule.each {|c| c.options = @options if c.is_a?(Sass::Script::Tree::Node)}
yield
end
def visit_variable(node)
node.expr.options = @options
yield
end
def visit_warn(node)
node.expr.options = @options
yield
end
def visit_while(node)
node.expr.options = @options
yield
end
def visit_directive(node)
node.value.each {|c| c.options = @options if c.is_a?(Sass::Script::Tree::Node)}
yield
end
def visit_media(node)
node.query.each {|c| c.options = @options if c.is_a?(Sass::Script::Tree::Node)}
yield
end
def visit_cssimport(node)
node.query.each {|c| c.options = @options if c.is_a?(Sass::Script::Tree::Node)} if node.query
yield
end
def visit_supports(node)
node.condition.options = @options
yield
end
end
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