⬆️ rust-analyzer

crates/stdx/Cargo.toml

@@ -2,9 +2,11 @@
 name = "stdx"
 version = "0.0.0"
 description = "TBD"
-license = "MIT OR Apache-2.0"
-edition = "2021"
-rust-version = "1.65"
+
+authors.workspace = true
+edition.workspace = true
+license.workspace = true
+rust-version.workspace = true
 
 [lib]
 doctest = false

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);

crates/stdx/src/macros.rs

@@ -43,5 +43,14 @@ macro_rules! impl_from {
                 }
             )*)?
         )*
+    };
+    ($($variant:ident$(<$V:ident>)?),* for $enum:ident) => {
+        $(
+            impl$(<$V>)? From<$variant$(<$V>)?> for $enum$(<$V>)? {
+                fn from(it: $variant$(<$V>)?) -> $enum$(<$V>)? {
+                    $enum::$variant(it)
+                }
+            }
+        )*
     }
 }