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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /third_party/rust/heck/src/shouty_snake.rs | |
parent | Initial commit. (diff) | |
download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'third_party/rust/heck/src/shouty_snake.rs')
-rw-r--r-- | third_party/rust/heck/src/shouty_snake.rs | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/third_party/rust/heck/src/shouty_snake.rs b/third_party/rust/heck/src/shouty_snake.rs new file mode 100644 index 0000000000..d5043755e6 --- /dev/null +++ b/third_party/rust/heck/src/shouty_snake.rs @@ -0,0 +1,85 @@ +use std::fmt; + +use crate::{transform, uppercase}; + +/// 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 +/// use heck::ToShoutySnakeCase; +/// +/// 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 ToShoutySnakeCase: ToOwned { + /// Convert this type to shouty snake case. + fn to_shouty_snake_case(&self) -> Self::Owned; +} + +/// Oh heck, ToShoutySnekCase is an alias for ToShoutySnakeCase. See +/// ToShoutySnakeCase for more documentation. +pub trait ToShoutySnekCase: ToOwned { + /// CONVERT THIS TYPE TO SNEK CASE. + #[allow(non_snake_case)] + fn TO_SHOUTY_SNEK_CASE(&self) -> Self::Owned; +} + +impl<T: ?Sized + ToShoutySnakeCase> ToShoutySnekCase for T { + fn TO_SHOUTY_SNEK_CASE(&self) -> Self::Owned { + self.to_shouty_snake_case() + } +} + +impl ToShoutySnakeCase for str { + fn to_shouty_snake_case(&self) -> Self::Owned { + AsShoutySnakeCase(self).to_string() + } +} + +/// This wrapper performs a shouty snake case conversion in [`fmt::Display`]. +/// +/// ## Example: +/// +/// ``` +/// use heck::AsShoutySnakeCase; +/// +/// let sentence = "That world is growing in this minute."; +/// assert_eq!(format!("{}", AsShoutySnakeCase(sentence)), "THAT_WORLD_IS_GROWING_IN_THIS_MINUTE"); +/// ``` +pub struct AsShoutySnakeCase<T: AsRef<str>>(pub T); + +impl<T: AsRef<str>> fmt::Display for AsShoutySnakeCase<T> { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + transform(self.0.as_ref(), uppercase, |f| write!(f, "_"), f) + } +} + +#[cfg(test)] +mod tests { + use super::ToShoutySnakeCase; + + 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"); + #[cfg(feature = "unicode")] + t!(test9: "XΣXΣ baffle" => "XΣXΣ_BAFFLE"); + t!(test10: "XMLHttpRequest" => "XML_HTTP_REQUEST"); +} |