| /// This trait defines a shouty snake case conversion. |
| /// |
| /// In SHOUTY_SNAKE_CASE, word boundaries are indicated by underscores and all |
| /// words are in uppercase. |
| /// |
| /// ## Example: |
| /// |
| /// ```rust |
| /// extern crate heck; |
| /// fn main() { |
| /// |
| /// use heck::ShoutySnakeCase; |
| /// |
| /// let sentence = "That world is growing in this minute."; |
| /// assert_eq!(sentence.to_shouty_snake_case(), "THAT_WORLD_IS_GROWING_IN_THIS_MINUTE"); |
| /// } |
| /// ``` |
| pub trait ShoutySnakeCase: ToOwned { |
| /// Convert this type to shouty snake case. |
| fn to_shouty_snake_case(&self) -> Self::Owned; |
| } |
| |
| /// Oh heck, ShoutySnekCase is an alias for ShoutySnakeCase. See ShoutySnakeCase for |
| /// more documentation. |
| pub trait ShoutySnekCase: ToOwned { |
| /// CONVERT THIS TYPE TO SNEK CASE. |
| #[allow(non_snake_case)] |
| fn TO_SHOUTY_SNEK_CASE(&self) -> Self::Owned; |
| } |
| |
| impl<T: ?Sized + ShoutySnakeCase> ShoutySnekCase for T { |
| fn TO_SHOUTY_SNEK_CASE(&self) -> Self::Owned { |
| self.to_shouty_snake_case() |
| } |
| } |
| |
| |
| impl ShoutySnakeCase for str { |
| fn to_shouty_snake_case(&self) -> Self::Owned { |
| ::transform(self, ::uppercase, |s| s.push('_')) |
| } |
| } |
| |
| #[cfg(test)] |
| mod tests { |
| use super::ShoutySnakeCase; |
| |
| macro_rules! t { |
| ($t:ident : $s1:expr => $s2:expr) => { |
| #[test] |
| fn $t() { |
| assert_eq!($s1.to_shouty_snake_case(), $s2) |
| } |
| } |
| } |
| |
| t!(test1: "CamelCase" => "CAMEL_CASE"); |
| t!(test2: "This is Human case." => "THIS_IS_HUMAN_CASE"); |
| t!(test3: "MixedUP CamelCase, with some Spaces" => "MIXED_UP_CAMEL_CASE_WITH_SOME_SPACES"); |
| t!(test4: "mixed_up_snake_case with some _spaces" => "MIXED_UP_SNAKE_CASE_WITH_SOME_SPACES"); |
| t!(test5: "kebab-case" => "KEBAB_CASE"); |
| t!(test6: "SHOUTY_SNAKE_CASE" => "SHOUTY_SNAKE_CASE"); |
| t!(test7: "snake_case" => "SNAKE_CASE"); |
| t!(test8: "this-contains_ ALLKinds OfWord_Boundaries" => "THIS_CONTAINS_ALL_KINDS_OF_WORD_BOUNDARIES"); |
| t!(test9: "XΣXΣ baffle" => "XΣXΣ_BAFFLE"); |
| t!(test10: "XMLHttpRequest" => "XML_HTTP_REQUEST"); |
| } |