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Diffstat (limited to 'src/macros.rs')
| -rw-r--r-- | src/macros.rs | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/src/macros.rs b/src/macros.rs new file mode 100644 index 00000000..8ba32650 --- /dev/null +++ b/src/macros.rs @@ -0,0 +1,25 @@ +#![allow(unused)] + +/// Unwrap the result if it is `Ok(T)` or evaluate `$or` if it is `Err(_)`. +/// This fits use cases the `?`-operator does not cover, like: +/// ``` +/// try_or!(result, continue); +/// ``` +macro_rules! try_or { + ($result:expr, $or:expr $(,)?) => { + match $result { + Ok(v) => v, + Err(_) => { $or } + } + }; +} + +/// Unwrap the option if it is `Some(T)` or evaluate `$or` if it is `None`. +macro_rules! try_opt_or { + ($option:expr, $or:expr $(,)?) => { + match $option { + Some(v) => v, + None => { $or } + } + }; +} |
