diff options
Diffstat (limited to 'compiler/rustc_span')
| -rw-r--r-- | compiler/rustc_span/src/lib.rs | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/compiler/rustc_span/src/lib.rs b/compiler/rustc_span/src/lib.rs index e38cd516b91..a730c303788 100644 --- a/compiler/rustc_span/src/lib.rs +++ b/compiler/rustc_span/src/lib.rs @@ -5,15 +5,14 @@ //! This API is completely unstable and subject to change. #![doc(html_root_url = "https://doc.rust-lang.org/nightly/")] +#![feature(array_windows)] #![feature(crate_visibility_modifier)] #![feature(const_fn)] #![feature(const_panic)] #![feature(negative_impls)] #![feature(nll)] -#![feature(optin_builtin_traits)] #![feature(min_specialization)] #![feature(option_expect_none)] -#![feature(refcell_take)] #[macro_use] extern crate rustc_macros; @@ -1158,7 +1157,12 @@ impl<S: Encoder> Encodable<S> for SourceFile { let max_line_length = if lines.len() == 1 { 0 } else { - lines.windows(2).map(|w| w[1] - w[0]).map(|bp| bp.to_usize()).max().unwrap() + lines + .array_windows() + .map(|&[fst, snd]| snd - fst) + .map(|bp| bp.to_usize()) + .max() + .unwrap() }; let bytes_per_diff: u8 = match max_line_length { @@ -1173,7 +1177,7 @@ impl<S: Encoder> Encodable<S> for SourceFile { // Encode the first element. lines[0].encode(s)?; - let diff_iter = (&lines[..]).windows(2).map(|w| (w[1] - w[0])); + let diff_iter = lines[..].array_windows().map(|&[fst, snd]| snd - fst); match bytes_per_diff { 1 => { |