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Mark endian_scalar as unsafe. (#6588)

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* Mark endian_scalar as unsafe.

Also
- removed the deprecated flexbuffer slice from example
- fixed some cargo warnings

* Assertions and read_scalar made unsafe

* Clippy lints

* Add to Safety

Co-authored-by: Casper Neo <cneo@google.com>
This commit is contained in:
Casper
2021-04-26 09:18:58 -04:00
committed by GitHub
parent 4ccc52c7a0
commit c24031c36b
20 changed files with 134 additions and 100 deletions
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18
samples/sample_flexbuffers.rs
View File

@@ -149,24 +149,6 @@ fn main() {
.iter()
.map(|r| r.as_u8())
.eq(vec![5, 10, 25, 25, 25, 100].into_iter()));
// For very speed sensitive applications, you can directly read the slice if all of the
// following are true:
//
// * The provided data buffer contains a valid flexbuffer.
// * You correctly specify the flexbuffer type and width.
// * The host machine is little endian.
// * The provided data buffer itself is aligned in memory to 8 bytes.
//
// Vec<u8> has alignment 1 so special care is needed to get your buffer's alignment to 8.
#[cfg(target_endian = "little")]
{
if monster_coins.is_aligned() {
assert_eq!(
monster_coins.get_slice::<i8>().unwrap(),
&[5, 10, 25, 25, 25, 100]
);
}
}
// Build the answer to life the universe and everything. Reusing a builder resets it. The
// reused internals won't need to reallocate leading to a potential 2x speedup.