File: derive.rs

package info (click to toggle)
chromium 135.0.7049.95-1~deb12u1
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 5,959,392 kB
  • sloc: cpp: 34,198,526; ansic: 7,100,035; javascript: 3,985,800; python: 1,395,489; asm: 896,754; xml: 722,891; pascal: 180,504; sh: 94,909; perl: 88,388; objc: 79,739; sql: 53,020; cs: 41,358; fortran: 24,137; makefile: 22,501; php: 13,699; tcl: 10,142; yacc: 8,822; ruby: 7,350; lisp: 3,096; lex: 1,327; ada: 727; jsp: 228; awk: 197; sed: 36
file content (77 lines) | stat: -rw-r--r-- 1,652 bytes parent folder | download | duplicates (6)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
#![cfg(feature = "derive")]
#![allow(dead_code)]

use bytemuck::{ByteEq, ByteHash, Pod, TransparentWrapper, Zeroable};
use std::marker::PhantomData;

#[derive(Copy, Clone, Pod, Zeroable, ByteEq, ByteHash)]
#[repr(C)]
struct Test {
  a: u16,
  b: u16,
}

#[derive(TransparentWrapper)]
#[repr(transparent)]
struct TransparentSingle {
  a: u16,
}

#[derive(TransparentWrapper)]
#[repr(transparent)]
#[transparent(u16)]
struct TransparentWithZeroSized {
  a: u16,
  b: (),
}

#[derive(TransparentWrapper)]
#[repr(transparent)]
struct TransparentWithGeneric<T: ?Sized> {
  a: T,
}

/// Ensuring that no additional bounds are emitted.
/// See https://github.com/Lokathor/bytemuck/issues/145
fn test_generic<T>(x: T) -> TransparentWithGeneric<T> {
  TransparentWithGeneric::wrap(x)
}

#[derive(TransparentWrapper)]
#[repr(transparent)]
#[transparent(T)]
struct TransparentWithGenericAndZeroSized<T: ?Sized> {
  a: (),
  b: T,
}

/// Ensuring that no additional bounds are emitted.
/// See https://github.com/Lokathor/bytemuck/issues/145
fn test_generic_with_zst<T>(x: T) -> TransparentWithGenericAndZeroSized<T> {
  TransparentWithGenericAndZeroSized::wrap(x)
}

#[derive(TransparentWrapper)]
#[repr(transparent)]
struct TransparentUnsized {
  a: dyn std::fmt::Debug,
}

type DynDebug = dyn std::fmt::Debug;

#[derive(TransparentWrapper)]
#[repr(transparent)]
#[transparent(DynDebug)]
struct TransparentUnsizedWithZeroSized {
  a: (),
  b: DynDebug,
}

#[derive(TransparentWrapper)]
#[repr(transparent)]
#[transparent(DynDebug)]
struct TransparentUnsizedWithGenericZeroSizeds<T: ?Sized, U: ?Sized> {
  a: PhantomData<T>,
  b: PhantomData<U>,
  c: DynDebug,
}