src/tools/clippy/tests/ui/needless_continue.rs

   1 #![warn(clippy::needless_continue)]
   2
   3 macro_rules! zero {
   4     ($x:expr) => {
   5         $x == 0
   6     };
   7 }
   8
   9 macro_rules! nonzero {
  10     ($x:expr) => {
  11         !zero!($x)
  12     };
  13 }
  14
  15 fn main() {
  16     let mut i = 1;
  17     while i < 10 {
  18         i += 1;
  19
  20         if i % 2 == 0 && i % 3 == 0 {
  21             println!("{}", i);
  22             println!("{}", i + 1);
  23             if i % 5 == 0 {
  24                 println!("{}", i + 2);
  25             }
  26             let i = 0;
  27             println!("bar {} ", i);
  28         } else {
  29             continue;
  30         }
  31
  32         println!("bleh");
  33         {
  34             println!("blah");
  35         }
  36
  37         // some comments that also should ideally be included in the
  38         // output of the lint suggestion if possible.
  39         if !(!(i == 2) || !(i == 5)) {
  40             println!("lama");
  41         }
  42
  43         if (zero!(i % 2) || nonzero!(i % 5)) && i % 3 != 0 {
  44             continue;
  45         } else {
  46             println!("Blabber");
  47             println!("Jabber");
  48         }
  49
  50         println!("bleh");
  51     }
  52 }
  53
  54 mod issue_2329 {
  55     fn condition() -> bool {
  56         unimplemented!()
  57     }
  58     fn update_condition() {}
  59
  60     // only the outer loop has a label
  61     fn foo() {
  62         'outer: loop {
  63             println!("Entry");
  64             while condition() {
  65                 update_condition();
  66                 if condition() {
  67                     println!("foo-1");
  68                 } else {
  69                     continue 'outer; // should not lint here
  70                 }
  71                 println!("foo-2");
  72
  73                 update_condition();
  74                 if condition() {
  75                     continue 'outer; // should not lint here
  76                 } else {
  77                     println!("foo-3");
  78                 }
  79                 println!("foo-4");
  80             }
  81         }
  82     }
  83
  84     // both loops have labels
  85     fn bar() {
  86         'outer: loop {
  87             println!("Entry");
  88             'inner: while condition() {
  89                 update_condition();
  90                 if condition() {
  91                     println!("bar-1");
  92                 } else {
  93                     continue 'outer; // should not lint here
  94                 }
  95                 println!("bar-2");
  96
  97                 update_condition();
  98                 if condition() {
  99                     println!("bar-3");
 100                 } else {
 101                     continue 'inner; // should lint here
 102                 }
 103                 println!("bar-4");
 104
 105                 update_condition();
 106                 if condition() {
 107                     continue; // should lint here
 108                 } else {
 109                     println!("bar-5");
 110                 }
 111                 println!("bar-6");
 112             }
 113         }
 114     }
 115 }