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use crate::common::ConvertCasing;
use convert_case::Case;
/// Types convertible to the letter casing corresponding to names of
/// [macros](https://doc.rust-lang.org/reference/macros.html).
pub trait ToMacroName {
/// The resulting type, coming out of the conversion.
type Output;
/// Converts self to the letter casing of
/// [macro](https://doc.rust-lang.org/reference/macros.html) names (`snake_case`).
/// Adheres to the [general conversion rules](crate#general-rules-for-conversions).
///
/// # Examples
///
/// Usage with [`syn::Ident`]:
///
/// ```
/// # use caseidae::ToMacroName;
/// # use syn::Ident;
/// # use proc_macro2::Span;
/// let trait_name = Ident::new("PartialEq", Span::call_site());
/// let macro_name = trait_name.to_macro_name();
/// assert_eq!(macro_name, "partial_eq");
/// ```
///
/// Usage with strings:
///
/// ```
/// # use caseidae::ToMacroName;
/// assert_eq!("HTTPS_HRYZIKO_DEV".to_macro_name(), "https_hryziko_dev");
/// assert_eq!(String::from("AlexAndDerMurder").to_macro_name(), "alex_and_der_murder");
/// ```
///
/// # Panics
///
/// Whether this method panics depends on the implementator, see their documentation for that.
/// However, implementations from this crate never panic.
fn to_macro_name(&self) -> Self::Output;
}
impl ToMacroName for str {
type Output = <Self as ToOwned>::Owned;
fn to_macro_name(&self) -> Self::Output {
self.convert_casing(Case::Snake)
}
}
#[cfg(feature = "syn")]
impl ToMacroName for syn::Ident {
type Output = <Self as ToOwned>::Owned;
fn to_macro_name(&self) -> Self::Output {
use crate::common::ConstructRawHandled;
Self::Output::new_raw_handled(self.to_string().to_macro_name().as_str(), self.span())
}
}