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Added SizeWith impl for fixed array. #100

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merged 2 commits into from
Aug 12, 2024
Merged

Added SizeWith impl for fixed array. #100

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7916216
Added SizeWith impl for fixed array.
Frostie314159 Jun 10, 2024
6ab5436
Removed unnecessary trait bound.
Frostie314159 Jun 10, 2024
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5 changes: 5 additions & 0 deletions src/ctx.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -830,6 +830,11 @@ impl<Ctx: Copy, T: TryIntoCtx<Ctx, Error = error::Error>, const N: usize> TryInt
Ok(offset)
}
}
impl<Ctx, T: SizeWith<Ctx>, const N: usize> SizeWith<Ctx> for [T; N] {
fn size_with(ctx: &Ctx) -> usize {
T::size_with(ctx) * N
}
}

#[cfg(feature = "std")]
impl<'a> TryFromCtx<'a> for &'a CStr {
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7 changes: 6 additions & 1 deletion tests/api.rs
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Expand Up @@ -3,7 +3,7 @@
use std::ops::{Deref, DerefMut};

use scroll::ctx::SizeWith as _;
use scroll::{ctx, Cread, Pread, Result};
use scroll::{ctx, Cread, Endian, Pread, Result};

#[derive(Default)]
pub struct Section<'a> {
Expand Down Expand Up @@ -376,3 +376,8 @@ fn test_fixed_array_rw() {
buf.pwrite([0x1337u16, 0x1337], 0).unwrap();
assert_eq!(buf, bytes);
}

#[test]
fn test_fixed_array_size_with() {
assert_eq!(<[u32; 3]>::size_with(&Endian::Little), 12);
}
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