Function in_loop

front-end/UglifyJS/parse-js.js:1174–1181

(cont)

        };

        function in_loop(cont) {
                try {
                        ++S.in_loop;
                        return cont();
                } finally {
                        --S.in_loop;
                }
        };

        return as("toplevel", (function(a){
                while (!is("eof"))