tests/source/closure.rs

   1 // Closures
   2
   3 fn main() {
   4     let square = ( |i:  i32 | i  *  i );
   5
   6     let commented = |/* first */ a /*argument*/, /* second*/ b: WithType /* argument*/, /* ignored */ _ |
   7         (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa, bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb);
   8
   9     let block_body = move   |xxxxxxxxxxxxxxxxxxxxxxxxxxxxx,  ref  yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy| {
  10             xxxxxxxxxxxxxxxxxxxxxxxxxxxxx + yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy
  11         };
  12
  13     let loooooooooooooong_name = |field| {
  14              // TODO(#27): format comments.
  15              if field.node.attrs.len() > 0 { field.node.attrs[0].span.lo
  16              } else {
  17                  field.span.lo
  18              }};
  19
  20     let block_me = |field| if true_story() { 1 } else { 2 };
  21
  22     let unblock_me = |trivial| {
  23                          closure()
  24                      };
  25
  26     let empty = |arg|    {};
  27
  28     let simple = |arg| { /* TODO(#27): comment formatting */ foo(arg) };
  29
  30     let test = |  | { do_something(); do_something_else(); };
  31
  32     let arg_test = |big_argument_name, test123| looooooooooooooooooong_function_naaaaaaaaaaaaaaaaame();
  33
  34     let arg_test = |big_argument_name, test123| {looooooooooooooooooong_function_naaaaaaaaaaaaaaaaame()};
  35
  36     let simple_closure = move ||   ->  () {};
  37
  38     let closure = |input: Ty| -> Option<String> {
  39         foo()
  40     };
  41
  42     let closure_with_return_type = |aaaaaaaaaaaaaaaaaaaaaaarg1, aaaaaaaaaaaaaaaaaaaaaaarg2| -> Strong { "sup".to_owned() };
  43
  44     |arg1, arg2, _, _, arg3, arg4| { let temp = arg4 + arg3;
  45                                      arg2 * arg1 - temp }
  46 }
  47
  48 fn issue311() {
  49     let func = |x| println!("{}", x);
  50
  51     (func)(0.0);
  52 }