assets/sass/bourbon/bourbon/validators/_is-length.scss

   1 @charset "UTF-8";
   2
   3 /// Checks for a valid CSS length.
   4 ///
   5 /// @argument {string} $value
   6 ///
   7 /// @return {boolean}
   8 ///
   9 /// @access private
  10
  11 @function _is-length($value) {
  12   @return type-of($value) != "null"
  13     and (
  14       str-slice($value + "", 1, 4) == "calc"
  15       or str-slice($value + "", 1, 3) == "var"
  16       or str-slice($value + "", 1, 3) == "env"
  17       or index(auto inherit initial 0, $value)
  18       or (type-of($value) == "number" and not(unitless($value)))
  19     );
  20 }