is_ascii_digit

Author: burrbull

src/util.rs

@@ -250,11 +250,10 @@ impl ToSanitizedCase for str {
             self.into()
         };
 
-        match s.chars().next().unwrap_or('\0') {
-            '0' | '1' | '2' | '3' | '4' | '5' | '6' | '7' | '8' | '9' => {
-                Cow::from(format!("_{}", Case::Pascal.to_case(&s)))
-            }
-            _ => Case::Pascal.cow_to_case(s),
+        if s.as_bytes().get(0).unwrap_or(&0).is_ascii_digit() {
+            Cow::from(format!("_{}", Case::Pascal.to_case(&s)))
+        } else {
+            Case::Pascal.cow_to_case(s)
         }
     }
     fn to_sanitized_constant_case(&self) -> Cow<str> {
@@ -264,11 +263,10 @@ impl ToSanitizedCase for str {
             self.into()
         };
 
-        match s.chars().next().unwrap_or('\0') {
-            '0' | '1' | '2' | '3' | '4' | '5' | '6' | '7' | '8' | '9' => {
-                Cow::from(format!("_{}", Case::Constant.to_case(&s)))
-            }
-            _ => Case::Constant.cow_to_case(s),
+        if s.as_bytes().get(0).unwrap_or(&0).is_ascii_digit() {
+            Cow::from(format!("_{}", Case::Constant.to_case(&s)))
+        } else {
+            Case::Constant.cow_to_case(s)
         }
     }
     fn to_sanitized_not_keyword_snake_case(&self) -> Cow<str> {
@@ -279,17 +277,14 @@ impl ToSanitizedCase for str {
         } else {
             self.into()
         };
-        match s.chars().next().unwrap_or('\0') {
-            '0' | '1' | '2' | '3' | '4' | '5' | '6' | '7' | '8' | '9' => {
-                format!("_{}", Case::Snake.to_case(&s)).into()
-            }
-            _ => {
-                let s = Case::Snake.cow_to_case(s);
-                if INTERNALS.contains(&s.as_ref()) {
-                    s + "_"
-                } else {
-                    s
-                }
+        if s.as_bytes().get(0).unwrap_or(&0).is_ascii_digit() {
+            format!("_{}", Case::Snake.to_case(&s)).into()
+        } else {
+            let s = Case::Snake.cow_to_case(s);
+            if INTERNALS.contains(&s.as_ref()) {
+                s + "_"
+            } else {
+                s
             }
         }
     }