rustfmt-core/tests/source/macro_rules.rs

   1 macro_rules! m {
   2         // a
   3         ($expr :expr,  $( $func : ident    ) *   ) => {
   4                 {
   5                 let    x =    $expr;
   6                                                                                         $func (
   7                                                                                                                 x
   8                                                                                         )
   9         }
  10         };
  11
  12                                 /* b */
  13
  14         ()           => {/* c */};
  15
  16                                                 (@tag)   =>
  17                                                  {
  18
  19                                                  };
  20
  21 // d
  22 ( $item:ident  ) =>      {
  23         mod macro_item    {  struct $item ; }
  24 };
  25 }
  26
  27 macro m2 {
  28         // a
  29         ($expr :expr,  $( $func : ident    ) *   ) => {
  30                 {
  31                 let    x =    $expr;
  32                                                                                         $func (
  33                                                                                                                 x
  34                                                                                         )
  35         }
  36         }
  37
  38                                 /* b */
  39
  40         ()           => {/* c */}
  41
  42                                                 (@tag)   =>
  43                                                  {
  44
  45                                                  }
  46
  47 // d
  48 ( $item:ident  ) =>      {
  49         mod macro_item    {  struct $item ; }
  50 }
  51 }