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use crate::common::ConvertCasing;
use convert_case::Case;
/// Types convertible to the letter casing corresponding to names of
/// [primitives](https://doc.rust-lang.org/rust-by-example/primitives.html).
pub trait ToPrimitiveName {
/// The resulting type, coming out of the conversion.
type Output;
/// Converts self to the letter casing of
/// [primitive](https://doc.rust-lang.org/rust-by-example/primitives.html) names (`flatcase`).
/// Adheres to the [general conversion rules](crate#general-rules-for-conversions).
///
/// # Examples
///
/// Usage with [`syn::Ident`]:
///
/// ```
/// # use caseidae::ToPrimitiveName;
/// # use syn::Ident;
/// # use proc_macro2::Span;
/// let enum_name = Ident::new("ThreeStateBool", Span::call_site());
/// let primitive_name = enum_name.to_primitive_name();
/// assert_eq!(primitive_name, "threestatebool");
/// ```
///
/// Usage with strings:
///
/// ```
/// # use caseidae::ToPrimitiveName;
/// assert_eq!("UNSIGNED_INT_256".to_primitive_name(), "unsignedint256");
/// assert_eq!(String::from("AlexAndDerMurder").to_primitive_name(), "alexanddermurder");
/// ```
///
/// # Panics
///
/// Whether this method panics depends on the implementator, see their documentation for that.
/// However, implementations from this crate never panic.
fn to_primitive_name(&self) -> Self::Output;
}
impl ToPrimitiveName for str {
type Output = <Self as ToOwned>::Owned;
fn to_primitive_name(&self) -> Self::Output {
self.convert_casing(Case::Flat)
}
}
#[cfg(feature = "syn")]
impl ToPrimitiveName for syn::Ident {
type Output = <Self as ToOwned>::Owned;
fn to_primitive_name(&self) -> Self::Output {
use crate::common::ConstructRawHandled;
Self::Output::new_raw_handled(self.to_string().to_primitive_name().as_str(), self.span())
}
}