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69942c0a89
Originally, when the Rust upstream `alloc` standard library crate was
vendored in commit 057b8d2571 ("rust: adapt `alloc` crate to the
kernel"), the SPDX License Identifiers were added to every file so that
the license on those was clear.
Thus do the same for the `syn` crate.
This makes `scripts/spdxcheck.py` pass.
Reviewed-by: Gary Guo <gary@garyguo.net>
Tested-by: Gary Guo <gary@garyguo.net>
Tested-by: Jesung Yang <y.j3ms.n@gmail.com>
Link: https://patch.msgid.link/20251124151837.2184382-17-ojeda@kernel.org
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
36 lines
1.2 KiB
Rust
36 lines
1.2 KiB
Rust
// SPDX-License-Identifier: Apache-2.0 OR MIT
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use crate::parse::ParseStream;
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use proc_macro2::{Delimiter, TokenStream};
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use std::cmp::Ordering;
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use std::iter;
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pub(crate) fn between<'a>(begin: ParseStream<'a>, end: ParseStream<'a>) -> TokenStream {
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let end = end.cursor();
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let mut cursor = begin.cursor();
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assert!(crate::buffer::same_buffer(end, cursor));
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let mut tokens = TokenStream::new();
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while cursor != end {
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let (tt, next) = cursor.token_tree().unwrap();
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if crate::buffer::cmp_assuming_same_buffer(end, next) == Ordering::Less {
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// A syntax node can cross the boundary of a None-delimited group
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// due to such groups being transparent to the parser in most cases.
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// Any time this occurs the group is known to be semantically
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// irrelevant. https://github.com/dtolnay/syn/issues/1235
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if let Some((inside, _span, after)) = cursor.group(Delimiter::None) {
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assert!(next == after);
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cursor = inside;
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continue;
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} else {
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panic!("verbatim end must not be inside a delimited group");
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}
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}
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tokens.extend(iter::once(tt));
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cursor = next;
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}
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tokens
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}
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