Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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kernel
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linux
1// SPDX-License-Identifier: Apache-2.0 OR MIT
2
3use proc_macro2::extra::DelimSpan;
4use proc_macro2::{Delimiter, Group, Span, TokenStream};
5
6#[doc(hidden)]
7pub trait IntoSpans<S> {
8 fn into_spans(self) -> S;
9}
10
11impl IntoSpans<Span> for Span {
12 fn into_spans(self) -> Span {
13 self
14 }
15}
16
17impl IntoSpans<[Span; 1]> for Span {
18 fn into_spans(self) -> [Span; 1] {
19 [self]
20 }
21}
22
23impl IntoSpans<[Span; 2]> for Span {
24 fn into_spans(self) -> [Span; 2] {
25 [self, self]
26 }
27}
28
29impl IntoSpans<[Span; 3]> for Span {
30 fn into_spans(self) -> [Span; 3] {
31 [self, self, self]
32 }
33}
34
35impl IntoSpans<[Span; 1]> for [Span; 1] {
36 fn into_spans(self) -> [Span; 1] {
37 self
38 }
39}
40
41impl IntoSpans<[Span; 2]> for [Span; 2] {
42 fn into_spans(self) -> [Span; 2] {
43 self
44 }
45}
46
47impl IntoSpans<[Span; 3]> for [Span; 3] {
48 fn into_spans(self) -> [Span; 3] {
49 self
50 }
51}
52
53impl IntoSpans<DelimSpan> for Span {
54 fn into_spans(self) -> DelimSpan {
55 let mut group = Group::new(Delimiter::None, TokenStream::new());
56 group.set_span(self);
57 group.delim_span()
58 }
59}
60
61impl IntoSpans<DelimSpan> for DelimSpan {
62 fn into_spans(self) -> DelimSpan {
63 self
64 }
65}