1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145
/// Unwraps in the ```Some``` case; returns in the ```None``` case. ///``` /// unwrap_return!(expression) ///``` /// is shorthand for ///``` /// match expression { /// Some(ret) => ret, /// None => return /// } /// ``` #[macro_export] macro_rules! unwrap_return { ($e:expr) => { match { $e } { Some(ret) => ret, None => return, } }; } /// Unwraps in the ```Some``` case; breaks in the ```None``` case. ///``` /// unwrap_break!(expression) ///``` /// is shorthand for ///``` /// match expression { /// Some(ret) => ret, /// None => break /// } /// ``` #[macro_export] macro_rules! unwrap_break { ($e:expr) => { match { $e } { Some(ret) => ret, None => break, } }; } /// Unwraps in the ```Some``` case; does something in the ```None``` case. /// /// Usually you want ```unwrap_or_else``` from the standard library. Use this for cases where /// you need to do something simple before returning or breaking, or you want to return a value. /// ///``` /// unwrap_do!(expression, do) ///``` /// is shorthand for ///``` /// match expression { /// Some(ret) => ret, /// None => { /// do /// } /// } /// ``` #[macro_export] macro_rules! unwrap_do { ($e:expr, $d:expr) => { match { $e } { Some(ret) => ret, None => $d } }; } /// Unwraps in the ```Ok``` case; returns in the ```Err``` case. /// /// Drops everything contained within Err. /// ///``` /// ok_unwrap_return!(expression) ///``` /// is shorthand for ///``` /// match expression { /// Ok(ret) => ret, /// Err(_) => return /// } /// ``` #[macro_export] macro_rules! ok_unwrap_return { ($e:expr) => { match { $e } { Ok(ret) => ret, Err(_) => return, } }; } /// Unwraps in the ```Ok``` case; breaks in the ```Result``` case. /// /// Drops everything contained within Err. /// ///``` /// ok_unwrap_break!(expression) ///``` /// is shorthand for ///``` /// match expression { /// Ok(ret) => ret, /// Err(_) => break /// } /// ``` #[macro_export] macro_rules! ok_unwrap_break { ($e:expr) => { match { $e } { Ok(ret) => ret, Err(_) => break, } }; } /// Unwraps in the ```Ok``` case; does something in the ```Err``` case. /// /// Drops everything contained within Err. /// /// Usually you want ```unwrap_or_else``` from the standard library. Use this for cases where /// you need to do something simple before returning or breaking, or you want to return a value. /// ///``` /// ok_unwrap_do!(expression, do) ///``` /// is shorthand for ///``` /// match expression { /// Ok(ret) => ret, /// Err(_) => { /// do /// } /// } /// ``` #[macro_export] macro_rules! ok_unwrap_do { ($e:expr, $d:expr) => { match { $e } { Ok(ret) => ret, Err(_) => $d } }; }