diff options
Diffstat (limited to 'vendor/heck/src/upper_camel.rs')
-rw-r--r-- | vendor/heck/src/upper_camel.rs | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/vendor/heck/src/upper_camel.rs b/vendor/heck/src/upper_camel.rs new file mode 100644 index 0000000..70bf4ac --- /dev/null +++ b/vendor/heck/src/upper_camel.rs @@ -0,0 +1,84 @@ +use std::fmt; + +use crate::{capitalize, transform}; + +/// This trait defines an upper camel case conversion. +/// +/// In UpperCamelCase, word boundaries are indicated by capital letters, +/// including the first word. +/// +/// ## Example: +/// +/// ```rust +/// use heck::ToUpperCamelCase; +/// +/// let sentence = "We are not in the least afraid of ruins."; +/// assert_eq!(sentence.to_upper_camel_case(), "WeAreNotInTheLeastAfraidOfRuins"); +/// ``` +pub trait ToUpperCamelCase: ToOwned { + /// Convert this type to upper camel case. + fn to_upper_camel_case(&self) -> Self::Owned; +} + +impl ToUpperCamelCase for str { + fn to_upper_camel_case(&self) -> String { + AsUpperCamelCase(self).to_string() + } +} + +/// ToPascalCase is an alias for ToUpperCamelCase. See ToUpperCamelCase for more +/// documentation. +pub trait ToPascalCase: ToOwned { + /// Convert this type to upper camel case. + fn to_pascal_case(&self) -> Self::Owned; +} + +impl<T: ?Sized + ToUpperCamelCase> ToPascalCase for T { + fn to_pascal_case(&self) -> Self::Owned { + self.to_upper_camel_case() + } +} + +/// This wrapper performs a upper camel case conversion in [`fmt::Display`]. +/// +/// ## Example: +/// +/// ``` +/// use heck::AsUpperCamelCase; +/// +/// let sentence = "We are not in the least afraid of ruins."; +/// assert_eq!(format!("{}", AsUpperCamelCase(sentence)), "WeAreNotInTheLeastAfraidOfRuins"); +/// ``` +pub struct AsUpperCamelCase<T: AsRef<str>>(pub T); + +impl<T: AsRef<str>> fmt::Display for AsUpperCamelCase<T> { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + transform(self.0.as_ref(), capitalize, |_| Ok(()), f) + } +} + +#[cfg(test)] +mod tests { + use super::ToUpperCamelCase; + + macro_rules! t { + ($t:ident : $s1:expr => $s2:expr) => { + #[test] + fn $t() { + assert_eq!($s1.to_upper_camel_case(), $s2) + } + }; + } + + t!(test1: "CamelCase" => "CamelCase"); + t!(test2: "This is Human case." => "ThisIsHumanCase"); + t!(test3: "MixedUP_CamelCase, with some Spaces" => "MixedUpCamelCaseWithSomeSpaces"); + t!(test4: "mixed_up_ snake_case, with some _spaces" => "MixedUpSnakeCaseWithSomeSpaces"); + t!(test5: "kebab-case" => "KebabCase"); + t!(test6: "SHOUTY_SNAKE_CASE" => "ShoutySnakeCase"); + t!(test7: "snake_case" => "SnakeCase"); + t!(test8: "this-contains_ ALLKinds OfWord_Boundaries" => "ThisContainsAllKindsOfWordBoundaries"); + #[cfg(feature = "unicode")] + t!(test9: "XΣXΣ baffle" => "XσxςBaffle"); + t!(test10: "XMLHttpRequest" => "XmlHttpRequest"); +} |