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better cfg

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nora 2022-09-25 12:33:08 +02:00
parent 98025d204f
commit 5a6f2e5130
1 changed files with 14 additions and 21 deletions
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35
src/args.rs
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@ -48,15 +48,8 @@ impl Arguments for Str {
} }
} }
macro_rules! not_for_pointer {
(Pointer $($tt:tt)*) => {};
($_not_pointer:ident $($tt:tt)*) => {
$($tt)*
}
}
macro_rules! traits { macro_rules! traits {
($(struct $name:ident: trait $trait:ident);* $(;)?) => { ($($(#[$no_reference_blanket_impl:ident])? struct $name:ident: trait $trait:ident);* $(;)?) => {
$( $(
pub struct $name<T, O>(pub T, pub O); pub struct $name<T, O>(pub T, pub O);
@ -74,21 +67,20 @@ macro_rules! traits {
)* )*
$( $(
not_for_pointer! { $( #[cfg(all(any(), $no_reference_blanket_impl))] )?
$trait impl<T: $trait + ?Sized> $trait for &T {
fn fmt<W: Write, O: FmtOpts>(&self, f: &mut Formatter<W, O>) -> Result {
impl<T: $trait + ?Sized> $trait for &T { <T as $trait>::fmt(&self, f)
fn fmt<W: Write, O: FmtOpts>(&self, f: &mut Formatter<W, O>) -> Result {
<T as $trait>::fmt(&self, f)
}
}
impl<T: $trait + ?Sized> $trait for &mut T {
fn fmt<W: Write, O: FmtOpts>(&self, f: &mut Formatter<W, O>) -> Result {
<T as $trait>::fmt(&self, f)
}
} }
} }
$( #[cfg(all(any(), $no_reference_blanket_impl))] )?
impl<T: $trait + ?Sized> $trait for &mut T {
fn fmt<W: Write, O: FmtOpts>(&self, f: &mut Formatter<W, O>) -> Result {
<T as $trait>::fmt(&self, f)
}
}
)* )*
pub mod macro_exports { pub mod macro_exports {
@ -110,5 +102,6 @@ traits!(
struct UpperHexArg: trait UpperHex; struct UpperHexArg: trait UpperHex;
struct UpperExpArg: trait UpperExp; struct UpperExpArg: trait UpperExp;
struct LowerExpArg: trait LowerExp; struct LowerExpArg: trait LowerExp;
#[no_reference_blanket_impl]
struct PointerArg: trait Pointer; struct PointerArg: trait Pointer;
); );