Function maybe_assign

front-end/UglifyJS/parse-js.js:1151–1161

()

        };

        function maybe_assign() {
                var left = maybe_conditional(), val = S.token.value;
                if (is("operator") && HOP(ASSIGNMENT, val)) {
                        if (is_assignable(left)) {
                                next();
                                return as("assign", ASSIGNMENT[val], left, maybe_assign());
                        }
                        croak("Invalid assignment");
                }
                return left;
        };

        function expression(commas) {
                if (arguments.length == 0)