Unnamed repository; edit this file 'description' to name the repository.
Diffstat (limited to 'crates/stdx/src/lib.rs')
| -rw-r--r-- | crates/stdx/src/lib.rs | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/crates/stdx/src/lib.rs b/crates/stdx/src/lib.rs index 51e109798d..bd24d7d28b 100644 --- a/crates/stdx/src/lib.rs +++ b/crates/stdx/src/lib.rs @@ -2,9 +2,9 @@ #![warn(rust_2018_idioms, unused_lifetimes, semicolon_in_expressions_from_macros)] +use std::io as sio; use std::process::Command; use std::{cmp::Ordering, ops, time::Instant}; -use std::{io as sio, iter}; mod macros; pub mod hash; @@ -39,15 +39,19 @@ Uncomment `default = [ "backtrace" ]` in `crates/stdx/Cargo.toml`. } pub fn to_lower_snake_case(s: &str) -> String { - to_snake_case(s, char::to_ascii_lowercase) + to_snake_case(s, char::to_lowercase) } pub fn to_upper_snake_case(s: &str) -> String { - to_snake_case(s, char::to_ascii_uppercase) + to_snake_case(s, char::to_uppercase) } // Code partially taken from rust/compiler/rustc_lint/src/nonstandard_style.rs // commit: 9626f2b -fn to_snake_case<F: Fn(&char) -> char>(mut s: &str, change_case: F) -> String { +fn to_snake_case<F, I>(mut s: &str, change_case: F) -> String +where + F: Fn(char) -> I, + I: Iterator<Item = char>, +{ let mut words = vec![]; // Preserve leading underscores @@ -75,7 +79,7 @@ fn to_snake_case<F: Fn(&char) -> char>(mut s: &str, change_case: F) -> String { } last_upper = ch.is_uppercase(); - buf.extend(iter::once(change_case(&ch))); + buf.extend(change_case(ch)); } words.push(buf); |