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-rw-r--r--libc/src/macros.rs275
1 files changed, 0 insertions, 275 deletions
diff --git a/libc/src/macros.rs b/libc/src/macros.rs
deleted file mode 100644
index f14bbf5..0000000
--- a/libc/src/macros.rs
+++ /dev/null
@@ -1,275 +0,0 @@
-/// A macro for defining #[cfg] if-else statements.
-///
-/// This is similar to the `if/elif` C preprocessor macro by allowing definition
-/// of a cascade of `#[cfg]` cases, emitting the implementation which matches
-/// first.
-///
-/// This allows you to conveniently provide a long list #[cfg]'d blocks of code
-/// without having to rewrite each clause multiple times.
-#[allow(unused_macros)]
-macro_rules! cfg_if {
- // match if/else chains with a final `else`
- ($(
- if #[cfg($($meta:meta),*)] { $($it:item)* }
- ) else * else {
- $($it2:item)*
- }) => {
- cfg_if! {
- @__items
- () ;
- $( ( ($($meta),*) ($($it)*) ), )*
- ( () ($($it2)*) ),
- }
- };
-
- // match if/else chains lacking a final `else`
- (
- if #[cfg($($i_met:meta),*)] { $($i_it:item)* }
- $(
- else if #[cfg($($e_met:meta),*)] { $($e_it:item)* }
- )*
- ) => {
- cfg_if! {
- @__items
- () ;
- ( ($($i_met),*) ($($i_it)*) ),
- $( ( ($($e_met),*) ($($e_it)*) ), )*
- ( () () ),
- }
- };
-
- // Internal and recursive macro to emit all the items
- //
- // Collects all the negated cfgs in a list at the beginning and after the
- // semicolon is all the remaining items
- (@__items ($($not:meta,)*) ; ) => {};
- (@__items ($($not:meta,)*) ; ( ($($m:meta),*) ($($it:item)*) ),
- $($rest:tt)*) => {
- // Emit all items within one block, applying an approprate #[cfg]. The
- // #[cfg] will require all `$m` matchers specified and must also negate
- // all previous matchers.
- cfg_if! { @__apply cfg(all($($m,)* not(any($($not),*)))), $($it)* }
-
- // Recurse to emit all other items in `$rest`, and when we do so add all
- // our `$m` matchers to the list of `$not` matchers as future emissions
- // will have to negate everything we just matched as well.
- cfg_if! { @__items ($($not,)* $($m,)*) ; $($rest)* }
- };
-
- // Internal macro to Apply a cfg attribute to a list of items
- (@__apply $m:meta, $($it:item)*) => {
- $(#[$m] $it)*
- };
-}
-
-#[allow(unused_macros)]
-macro_rules! s {
- ($($(#[$attr:meta])* pub $t:ident $i:ident { $($field:tt)* })*) => ($(
- s!(it: $(#[$attr])* pub $t $i { $($field)* });
- )*);
- (it: $(#[$attr:meta])* pub union $i:ident { $($field:tt)* }) => (
- compile_error!("unions cannot derive extra traits, use s_no_extra_traits instead");
- );
- (it: $(#[$attr:meta])* pub struct $i:ident { $($field:tt)* }) => (
- __item! {
- #[repr(C)]
- #[cfg_attr(feature = "extra_traits", derive(Debug, Eq, Hash, PartialEq))]
- #[allow(deprecated)]
- $(#[$attr])*
- pub struct $i { $($field)* }
- }
- #[allow(deprecated)]
- impl ::Copy for $i {}
- #[allow(deprecated)]
- impl ::Clone for $i {
- fn clone(&self) -> $i { *self }
- }
- );
-}
-
-#[allow(unused_macros)]
-macro_rules! s_no_extra_traits {
- ($($(#[$attr:meta])* pub $t:ident $i:ident { $($field:tt)* })*) => ($(
- s_no_extra_traits!(it: $(#[$attr])* pub $t $i { $($field)* });
- )*);
- (it: $(#[$attr:meta])* pub union $i:ident { $($field:tt)* }) => (
- cfg_if! {
- if #[cfg(libc_union)] {
- __item! {
- #[repr(C)]
- $(#[$attr])*
- pub union $i { $($field)* }
- }
-
- impl ::Copy for $i {}
- impl ::Clone for $i {
- fn clone(&self) -> $i { *self }
- }
- }
- }
- );
- (it: $(#[$attr:meta])* pub struct $i:ident { $($field:tt)* }) => (
- __item! {
- #[repr(C)]
- $(#[$attr])*
- pub struct $i { $($field)* }
- }
- impl ::Copy for $i {}
- impl ::Clone for $i {
- fn clone(&self) -> $i { *self }
- }
- );
-}
-
-// This is a pretty horrible hack to allow us to conditionally mark
-// some functions as 'const', without requiring users of this macro
-// to care about the "const-extern-fn" feature.
-//
-// When 'const-extern-fn' is enabled, we emit the captured 'const' keyword
-// in the expanded function.
-//
-// When 'const-extern-fn' is disabled, we always emit a plain 'pub unsafe extern fn'.
-// Note that the expression matched by the macro is exactly the same - this allows
-// users of this macro to work whether or not 'const-extern-fn' is enabled
-//
-// Unfortunately, we need to duplicate most of this macro between the 'cfg_if' blocks.
-// This is because 'const unsafe extern fn' won't even parse on older compilers,
-// so we need to avoid emitting it at all of 'const-extern-fn'.
-//
-// Specifically, moving the 'cfg_if' into the macro body will *not* work.
-// Doing so would cause the '#[cfg(feature = "const-extern-fn")]' to be emiited
-// into user code. The 'cfg' gate will not stop Rust from trying to parse the
-// 'pub const unsafe extern fn', so users would get a compiler error even when
-// the 'const-extern-fn' feature is disabled
-//
-// Note that users of this macro need to place 'const' in a weird position
-// (after the closing ')' for the arguments, but before the return type).
-// This was the only way I could satisfy the following two requirements:
-// 1. Avoid ambuguity errors from 'macro_rules!' (which happen when writing '$foo:ident fn'
-// 2. Allow users of this macro to mix 'pub fn foo' and 'pub const fn bar' within the same
-// 'f!' block
-cfg_if! {
- if #[cfg(libc_const_extern_fn)] {
- #[allow(unused_macros)]
- macro_rules! f {
- ($(pub $({$constness:ident})* fn $i:ident(
- $($arg:ident: $argty:ty),*
- ) -> $ret:ty {
- $($body:stmt);*
- })*) => ($(
- #[inline]
- pub $($constness)* unsafe extern fn $i($($arg: $argty),*
- ) -> $ret {
- $($body);*
- }
- )*)
- }
-
- #[allow(unused_macros)]
- macro_rules! const_fn {
- ($($({$constness:ident})* fn $i:ident(
- $($arg:ident: $argty:ty),*
- ) -> $ret:ty {
- $($body:stmt);*
- })*) => ($(
- #[inline]
- $($constness)* fn $i($($arg: $argty),*
- ) -> $ret {
- $($body);*
- }
- )*)
- }
-
- } else {
- #[allow(unused_macros)]
- macro_rules! f {
- ($(pub $({$constness:ident})* fn $i:ident(
- $($arg:ident: $argty:ty),*
- ) -> $ret:ty {
- $($body:stmt);*
- })*) => ($(
- #[inline]
- pub unsafe extern fn $i($($arg: $argty),*
- ) -> $ret {
- $($body);*
- }
- )*)
- }
-
- #[allow(unused_macros)]
- macro_rules! const_fn {
- ($($({$constness:ident})* fn $i:ident(
- $($arg:ident: $argty:ty),*
- ) -> $ret:ty {
- $($body:stmt);*
- })*) => ($(
- #[inline]
- fn $i($($arg: $argty),*
- ) -> $ret {
- $($body);*
- }
- )*)
- }
- }
-}
-
-#[allow(unused_macros)]
-macro_rules! __item {
- ($i:item) => {
- $i
- };
-}
-
-#[allow(unused_macros)]
-macro_rules! align_const {
- ($($(#[$attr:meta])*
- pub const $name:ident : $t1:ty
- = $t2:ident { $($field:tt)* };)*) => ($(
- #[cfg(libc_align)]
- $(#[$attr])*
- pub const $name : $t1 = $t2 {
- $($field)*
- };
- #[cfg(not(libc_align))]
- $(#[$attr])*
- pub const $name : $t1 = $t2 {
- $($field)*
- __align: [],
- };
- )*)
-}
-
-// This macro is used to deprecate items that should be accessed via the mach crate
-#[allow(unused_macros)]
-macro_rules! deprecated_mach {
- (pub const $id:ident: $ty:ty = $expr:expr;) => {
- #[deprecated(
- since = "0.2.55",
- note = "Use the `mach` crate instead",
- )]
- #[allow(deprecated)]
- pub const $id: $ty = $expr;
- };
- ($(pub const $id:ident: $ty:ty = $expr:expr;)*) => {
- $(
- deprecated_mach!(
- pub const $id: $ty = $expr;
- );
- )*
- };
- (pub type $id:ident = $ty:ty;) => {
- #[deprecated(
- since = "0.2.55",
- note = "Use the `mach` crate instead",
- )]
- #[allow(deprecated)]
- pub type $id = $ty;
- };
- ($(pub type $id:ident = $ty:ty;)*) => {
- $(
- deprecated_mach!(
- pub type $id = $ty;
- );
- )*
- }
-}
generated by cgit v1.2.3 (git 2.46.0) at 2024-11-24 16:26:12 +0000