1use super::*;
2
3impl<T> Format for core::ptr::NonNull<T> {
4 fn format(&self, fmt: Formatter) {
5 crate::write!(fmt, "{}", self.as_ptr())
6 }
7}
8
9#[cfg(c_variadic)]
10macro_rules! fnptr_format_cvariadic {
11 ($($Arg:ident),+) => {
12 impl<Ret, $($Arg),*> Format for extern "C" fn($($Arg),* , ...) -> Ret {
13 fn format(&self, fmt: Formatter) {
14 crate::write!(fmt, "{}", (*self as usize) as *const ())
15 }
16 }
17 impl<Ret, $($Arg),*> Format for unsafe extern "C" fn($($Arg),* , ...) -> Ret {
18 fn format(&self, fmt: Formatter) {
19 crate::write!(fmt, "{}", (*self as usize) as *const ())
20 }
21 }
22 };
23 () => {
24 // C variadics require at least one other argument
25 };
26}
27
28macro_rules! fnptr_format_args {
29 ($($Arg:ident),*) => {
30 impl<Ret, $($Arg),*> Format for extern "Rust" fn($($Arg),*) -> Ret {
31 fn format(&self, fmt: Formatter) {
32 crate::write!(fmt, "{}", (*self as usize) as *const ())
33 }
34 }
35 impl<Ret, $($Arg),*> Format for extern "C" fn($($Arg),*) -> Ret {
36 fn format(&self, fmt: Formatter) {
37 crate::write!(fmt, "{}", (*self as usize) as *const ())
38 }
39 }
40 impl<Ret, $($Arg),*> Format for unsafe extern "Rust" fn($($Arg),*) -> Ret {
41 fn format(&self, fmt: Formatter) {
42 crate::write!(fmt, "{}", (*self as usize) as *const ())
43 }
44 }
45 impl<Ret, $($Arg),*> Format for unsafe extern "C" fn($($Arg),*) -> Ret {
46 fn format(&self, fmt: Formatter) {
47 crate::write!(fmt, "{}", (*self as usize) as *const ())
48 }
49 }
50 #[cfg(c_variadic)]
51 fnptr_format_cvariadic!{ $($Arg),* }
52 };
53}
54
55// core::ptr has fnptr impls up to 12 arguments
56// https://doc.rust-lang.org/src/core/ptr/mod.rs.html#1994
57fnptr_format_args! {}
58fnptr_format_args! { A }
59fnptr_format_args! { A, B }
60fnptr_format_args! { A, B, C }
61fnptr_format_args! { A, B, C, D }
62fnptr_format_args! { A, B, C, D, E }
63fnptr_format_args! { A, B, C, D, E, F }
64fnptr_format_args! { A, B, C, D, E, F, G }
65fnptr_format_args! { A, B, C, D, E, F, G, H }
66fnptr_format_args! { A, B, C, D, E, F, G, H, I }
67fnptr_format_args! { A, B, C, D, E, F, G, H, I, J }
68fnptr_format_args! { A, B, C, D, E, F, G, H, I, J, K }
69fnptr_format_args! { A, B, C, D, E, F, G, H, I, J, K, L }
70