tests/target/match.rs

   1 // Match expressions.
   2
   3 fn foo() {
   4     // A match expression.
   5     match x {
   6         // Some comment.
   7         a => foo(),
   8         b if 0 < 42 => foo(),
   9         c => { // Another comment.
  10             // Comment.
  11             an_expression;
  12             foo()
  13         }
  14         // Perhaps this should introduce braces?
  15         Foo(ref bar) =>
  16             aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,
  17         Pattern1 | Pattern2 | Pattern3 => false,
  18         Paternnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn |
  19         Paternnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn => {
  20             blah
  21         }
  22         Patternnnnnnnnnnnnnnnnnnn |
  23         Patternnnnnnnnnnnnnnnnnnn |
  24         Patternnnnnnnnnnnnnnnnnnn |
  25         Patternnnnnnnnnnnnnnnnnnn => meh,
  26
  27         Patternnnnnnnnnnnnnnnnnnn |
  28         Patternnnnnnnnnnnnnnnnnnn if looooooooooooooooooong_guard => meh,
  29
  30         Patternnnnnnnnnnnnnnnnnnnnnnnnn |
  31         Patternnnnnnnnnnnnnnnnnnnnnnnnn if looooooooooooooooooooooooooooooooooooooooong_guard =>
  32             meh,
  33
  34         // Test that earlier patterns can take the guard space
  35         (aaaa, bbbbb, ccccccc, aaaaa, bbbbbbbb, cccccc, aaaa, bbbbbbbb, cccccc, dddddd) |
  36         Patternnnnnnnnnnnnnnnnnnnnnnnnn if loooooooooooooooooooooooooooooooooooooooooong_guard => {}
  37
  38         _ => {}
  39         ast::PathParameters::AngleBracketedParameters(ref data) if data.lifetimes.len() > 0 ||
  40                                                                    data.types.len() > 0 ||
  41                                                                    data.bindings.len() > 0 => {
  42         }
  43     }
  44
  45     let whatever = match something {
  46         /// DOC COMMENT!
  47         Some(_) => 42,
  48         // Comment on an attribute.
  49         #[an_attribute]
  50         // Comment after an attribute.
  51         None => 0,
  52         #[rustfmt_skip]
  53         Blurb     =>     {                  }
  54     };
  55 }