-
-
Notifications
You must be signed in to change notification settings - Fork 19
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
Showing
8 changed files
with
153 additions
and
152 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,77 @@ | ||
| ```rust | ||
| use bytecheck::{CheckBytes, check_bytes, rancor::Failure}; | ||
|
|
||
| #[derive(CheckBytes, Debug)] | ||
| #[repr(C)] | ||
| struct Test { | ||
| a: u32, | ||
| b: char, | ||
| c: bool, | ||
| } | ||
|
|
||
| #[repr(C, align(4))] | ||
| struct Aligned<const N: usize>([u8; N]); | ||
|
|
||
| macro_rules! bytes { | ||
| ($($byte:literal,)*) => { | ||
| (&Aligned([$($byte,)*]).0 as &[u8]).as_ptr() | ||
| }; | ||
| ($($byte:literal),*) => { | ||
| bytes!($($byte,)*) | ||
| }; | ||
| } | ||
|
|
||
| // In this example, the architecture is assumed to be little-endian | ||
| #[cfg(target_endian = "little")] | ||
| unsafe { | ||
| // These are valid bytes for a `Test` | ||
| check_bytes::<Test, Failure>( | ||
| bytes![ | ||
| 0u8, 0u8, 0u8, 0u8, | ||
| 0x78u8, 0u8, 0u8, 0u8, | ||
| 1u8, 255u8, 255u8, 255u8, | ||
| ].cast() | ||
| ).unwrap(); | ||
|
|
||
| // Changing the bytes for the u32 is OK, any bytes are a valid u32 | ||
| check_bytes::<Test, Failure>( | ||
| bytes![ | ||
| 42u8, 16u8, 20u8, 3u8, | ||
| 0x78u8, 0u8, 0u8, 0u8, | ||
| 1u8, 255u8, 255u8, 255u8, | ||
| ].cast() | ||
| ).unwrap(); | ||
|
|
||
| // Characters outside the valid ranges are invalid | ||
| check_bytes::<Test, Failure>( | ||
| bytes![ | ||
| 0u8, 0u8, 0u8, 0u8, | ||
| 0x00u8, 0xd8u8, 0u8, 0u8, | ||
| 1u8, 255u8, 255u8, 255u8, | ||
| ].cast() | ||
| ).unwrap_err(); | ||
| check_bytes::<Test, Failure>( | ||
| bytes![ | ||
| 0u8, 0u8, 0u8, 0u8, | ||
| 0x00u8, 0x00u8, 0x11u8, 0u8, | ||
| 1u8, 255u8, 255u8, 255u8, | ||
| ].cast() | ||
| ).unwrap_err(); | ||
|
|
||
| // 0 is a valid boolean value (false) but 2 is not | ||
| check_bytes::<Test, Failure>( | ||
| bytes![ | ||
| 0u8, 0u8, 0u8, 0u8, | ||
| 0x78u8, 0u8, 0u8, 0u8, | ||
| 0u8, 255u8, 255u8, 255u8, | ||
| ].cast() | ||
| ).unwrap(); | ||
| check_bytes::<Test, Failure>( | ||
| bytes![ | ||
| 0u8, 0u8, 0u8, 0u8, | ||
| 0x78u8, 0u8, 0u8, 0u8, | ||
| 2u8, 255u8, 255u8, 255u8, | ||
| ].cast() | ||
| ).unwrap_err(); | ||
| } | ||
| ``` |
Oops, something went wrong.