# File lib/sass/tree/visitors/perform.rb, line 243 def visit_warn(node) @environment.push_frame(:filename => node.filename, :line => node.line) res = node.expr.perform(@environment) res = res.value if res.is_a?(Sass::Script::String) msg = "WARNING: #{res}\n" @environment.stack.reverse.each_with_index do |entry, i| msg << " #{i == 0 ? "on" : "from"} line #{entry[:line]}" << " of #{entry[:filename] || "an unknown file"}" msg << ", in `#{entry[:mixin]}'" if entry[:mixin] msg << "\n" end Sass::Util.sass_warn msg [] ensure @environment.pop_frame end