use crate::config::StyleEdition;
#[allow(dead_code)]
pub(crate) trait StyleEditionDefault {
type ConfigType;
fn style_edition_default(style_edition: StyleEdition) -> Self::ConfigType;
}
#[macro_export]
macro_rules! style_edition_default {
($ty:ident, $config_ty:ty, _ => $default:expr) => {
impl $crate::config::style_edition::StyleEditionDefault for $ty {
type ConfigType = $config_ty;
fn style_edition_default(_: $crate::config::StyleEdition) -> Self::ConfigType {
$default
}
}
};
($ty:ident, $config_ty:ty, Edition2024 => $default_2024:expr, _ => $default_2015:expr) => {
impl $crate::config::style_edition::StyleEditionDefault for $ty {
type ConfigType = $config_ty;
fn style_edition_default(
style_edition: $crate::config::StyleEdition,
) -> Self::ConfigType {
match style_edition {
$crate::config::StyleEdition::Edition2015
| $crate::config::StyleEdition::Edition2018
| $crate::config::StyleEdition::Edition2021 => $default_2015,
$crate::config::StyleEdition::Edition2024 => $default_2024,
}
}
}
};
}
#[cfg(test)]
mod test {
use super::*;
use crate::config::StyleEdition;
#[test]
fn test_impl_default_style_edition_struct_for_all_editions() {
struct Unit;
style_edition_default!(Unit, usize, _ => 100);
assert_eq!(Unit::style_edition_default(StyleEdition::Edition2015), 100);
assert_eq!(Unit::style_edition_default(StyleEdition::Edition2018), 100);
assert_eq!(Unit::style_edition_default(StyleEdition::Edition2021), 100);
assert_eq!(Unit::style_edition_default(StyleEdition::Edition2024), 100);
}
#[test]
fn test_impl_default_style_edition_for_old_and_new_editions() {
struct Unit;
style_edition_default!(Unit, usize, Edition2024 => 50, _ => 100);
assert_eq!(Unit::style_edition_default(StyleEdition::Edition2015), 100);
assert_eq!(Unit::style_edition_default(StyleEdition::Edition2018), 100);
assert_eq!(Unit::style_edition_default(StyleEdition::Edition2021), 100);
assert_eq!(Unit::style_edition_default(StyleEdition::Edition2024), 50);
}
}