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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
commit | 698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch) | |
tree | 173a775858bd501c378080a10dca74132f05bc50 /src/test/ui/macros/try-macro.rs | |
parent | Initial commit. (diff) | |
download | rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip |
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/test/ui/macros/try-macro.rs')
-rw-r--r-- | src/test/ui/macros/try-macro.rs | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/src/test/ui/macros/try-macro.rs b/src/test/ui/macros/try-macro.rs new file mode 100644 index 000000000..824c77d9d --- /dev/null +++ b/src/test/ui/macros/try-macro.rs @@ -0,0 +1,49 @@ +// run-pass +#![allow(deprecated)] // for deprecated `try!()` macro +use std::num::{ParseFloatError, ParseIntError}; + +fn main() { + assert_eq!(simple(), Ok(1)); + assert_eq!(nested(), Ok(2)); + assert_eq!(merge_ok(), Ok(3.0)); + assert_eq!(merge_int_err(), Err(Error::Int)); + assert_eq!(merge_float_err(), Err(Error::Float)); +} + +fn simple() -> Result<i32, ParseIntError> { + Ok(try!("1".parse())) +} + +fn nested() -> Result<i32, ParseIntError> { + Ok(try!(try!("2".parse::<i32>()).to_string().parse::<i32>())) +} + +fn merge_ok() -> Result<f32, Error> { + Ok(try!("1".parse::<i32>()) as f32 + try!("2.0".parse::<f32>())) +} + +fn merge_int_err() -> Result<f32, Error> { + Ok(try!("a".parse::<i32>()) as f32 + try!("2.0".parse::<f32>())) +} + +fn merge_float_err() -> Result<f32, Error> { + Ok(try!("1".parse::<i32>()) as f32 + try!("b".parse::<f32>())) +} + +#[derive(Debug, PartialEq)] +enum Error { + Int, + Float, +} + +impl From<ParseIntError> for Error { + fn from(_: ParseIntError) -> Error { + Error::Int + } +} + +impl From<ParseFloatError> for Error { + fn from(_: ParseFloatError) -> Error { + Error::Float + } +} |