src/tools/rustfmt/tests/source/expr-block.rs

   1 // Test expressions with block formatting.
   2
   3 fn arrays() {
   4     [      ];
   5     let empty = [];
   6
   7     let foo = [a_long_name, a_very_lng_name, a_long_name];
   8
   9     let foo = [a_long_name, a_very_lng_name, a_long_name, a_very_lng_name, a_long_name, a_very_lng_name, a_long_name, a_very_lng_name];
  10
  11     vec![a_long_name, a_very_lng_name, a_long_name, a_very_lng_name, a_long_name, a_very_lng_name, a_very_lng_name];
  12
  13     [a_long_name, a_very_lng_name, a_long_name, a_very_lng_name, a_long_name, a_very_lng_name, a_very_lng_name]
  14 }
  15
  16 fn arrays() {
  17     let x = [0,
  18          1,
  19          2,
  20          3,
  21          4,
  22          5,
  23          6,
  24          7,
  25          8,
  26          9,
  27          0,
  28          1,
  29          2,
  30          3,
  31          4,
  32          5,
  33          6,
  34          7,
  35          8,
  36          9,
  37          0,
  38          7,
  39          8,
  40          9,
  41          0,
  42          1,
  43          2,
  44          3,
  45          4,
  46          5,
  47          6,
  48          7,
  49          8,
  50          9,
  51          0];
  52
  53     let y = [/* comment */ 1, 2 /* post comment */, 3];
  54
  55     let xy =    [ strukt  { test123: value_one_two_three_four, turbo: coolio(), } , /* comment  */   1 ];
  56
  57         let a =WeightedChoice::new(&mut [Weighted {
  58             weight: x,
  59             item: 0,
  60         },
  61                                   Weighted {
  62             weight: 1,
  63             item: 1,
  64         },
  65                                   Weighted {
  66             weight: x,
  67             item: 2,
  68         },
  69                                   Weighted {
  70             weight: 1,
  71             item: 3,
  72         }]);
  73
  74     let z = [xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx, yyyyyyyyyyyyyyyyyyyyyyyyyyy, zzzzzzzzzzzzzzzzz, q];
  75
  76     [ 1 +   3, 4 ,  5, 6, 7, 7, fncall::<Vec<_>>(3-1)]
  77 }
  78
  79 fn function_calls() {
  80     let items = itemize_list(context.source_map,
  81                              args.iter(),
  82                              ")",
  83                              |item| item.span.lo(),
  84                              |item| item.span.hi(),
  85                              |item| {
  86                                  item.rewrite(context,
  87                                               Shape {
  88                                                   width: remaining_width,
  89                                                   ..nested_shape
  90                                               })
  91                              },
  92                              span.lo(),
  93                              span.hi());
  94
  95     itemize_list(context.source_map,
  96                              args.iter(),
  97                              ")",
  98                              |item| item.span.lo(),
  99                              |item| item.span.hi(),
 100                              |item| {
 101                                  item.rewrite(context,
 102                                               Shape {
 103                                                   width: remaining_width,
 104                                                   ..nested_shape
 105                                               })
 106                              },
 107                              span.lo(),
 108                              span.hi())
 109 }
 110
 111 fn macros() {
 112     baz!(do_not, add, trailing, commas, inside, of, function, like, macros, even, if_they, are, long);
 113
 114     baz!(one_item_macro_which_is_also_loooooooooooooooooooooooooooooooooooooooooooooooong);
 115
 116     let _ = match option {
 117         None => baz!(function, like, macro_as, expression, which, is, loooooooooooooooong),
 118         Some(p) => baz!(one_item_macro_as_expression_which_is_also_loooooooooooooooong),
 119     };
 120 }
 121
 122 fn issue_1450() {
 123     if selfstate
 124         .compare_exchandsfasdsdfgsdgsdfgsdfgsdfgsdfgsdfgfsfdsage_weak(
 125             STATE_PARKED,
 126             STATE_UNPARKED,
 127             Release,
 128             Relaxed,
 129             Release,
 130             Relaxed,
 131         )
 132         .is_ok() {
 133         return;
 134     }
 135 }
 136
 137 fn foo() {
 138     if real_total <= limit && !pre_line_comments &&
 139             !items.into_iter().any(|item| item.as_ref().is_multiline()) {
 140          DefinitiveListTactic::Horizontal
 141     }
 142 }
 143
 144 fn combine_block() {
 145     foo(
 146         Bar {
 147             x: value,
 148             y: value2,
 149         },
 150     );
 151
 152     foo((Bar {
 153         x: value,
 154         y: value2,
 155     },));
 156
 157     foo((1, 2, 3, Bar {
 158         x: value,
 159         y: value2,
 160     }));
 161
 162     foo((1, 2, 3, |x| {
 163         let y = x + 1;
 164         let z = y + 1;
 165         z
 166     }));
 167
 168     let opt = Some(
 169         Struct(
 170             long_argument_one,
 171             long_argument_two,
 172             long_argggggggg,
 173         ),
 174     );
 175
 176     do_thing(
 177         |param| {
 178             action();
 179             foo(param)
 180         },
 181     );
 182
 183     do_thing(
 184         x,
 185         |param| {
 186             action();
 187             foo(param)
 188         },
 189     );
 190
 191     do_thing(
 192         x,
 193         (
 194             1,
 195             2,
 196             3,
 197             |param| {
 198                 action();
 199                 foo(param)
 200             },
 201         ),
 202     );
 203
 204     Ok(
 205         some_function(
 206             lllllllllong_argument_one,
 207             lllllllllong_argument_two,
 208             lllllllllllllllllllllllllllllong_argument_three,
 209         ),
 210     );
 211
 212     foo(
 213         thing,
 214         bar(
 215             param2,
 216             pparam1param1param1param1param1param1param1param1param1param1aram1,
 217             param3,
 218         ),
 219     );
 220
 221     foo.map_or(
 222         || {
 223             Ok(
 224                 SomeStruct {
 225                     f1: 0,
 226                     f2: 0,
 227                     f3: 0,
 228                 },
 229             )
 230         },
 231     );
 232
 233     match opt {
 234         Some(x) => somefunc(anotherfunc(
 235             long_argument_one,
 236             long_argument_two,
 237             long_argument_three,
 238         )),
 239         Some(x) => |x| {
 240             let y = x + 1;
 241             let z = y + 1;
 242             z
 243         },
 244         Some(x) => (1, 2, |x| {
 245             let y = x + 1;
 246             let z = y + 1;
 247             z
 248         }),
 249         Some(x) => SomeStruct {
 250             f1: long_argument_one,
 251             f2: long_argument_two,
 252             f3: long_argument_three,
 253         },
 254         None => Ok(SomeStruct {
 255             f1: long_argument_one,
 256             f2: long_argument_two,
 257             f3: long_argument_three,
 258         }),
 259     };
 260
 261     match x {
 262         y => func(
 263             xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx,
 264         ),
 265         _ => func(
 266             x,
 267             yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy,
 268             zzz,
 269         ),
 270     }
 271 }
 272
 273 fn issue_1862() {
 274     foo(
 275         /* bar = */ None ,
 276         something_something,
 277         /* baz = */ None ,
 278         /* This comment waaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaay too long to be kept on the same line */ None ,
 279         /* com */ this_last_arg_is_tooooooooooooooooooooooooooooooooo_long_to_be_kept_with_the_pre_comment ,
 280     )
 281 }
 282
 283 fn issue_3025() {
 284     foo(
 285         // This describes the argument below.
 286         /* bar = */ None ,
 287         // This describes the argument below.
 288         something_something,
 289         // This describes the argument below. */
 290         None ,
 291         // This describes the argument below.
 292         /* This comment waaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaay too long to be kept on the same line */ None ,
 293         // This describes the argument below.
 294         /* com */ this_last_arg_is_tooooooooooooooooooooooooooooooooo_long_to_be_kept_with_the_pre_comment ,
 295     )
 296 }
 297
 298 fn issue_1878() {
 299     let channel: &str = seq.next_element()?.ok_or_else(|| de::Error::invalid_length(2, &self))?;
 300 }