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Move macro enum_from_u32 to rustc_data_structures.

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This commit is contained in:
Camille GILLOT 2020-01-30 08:19:59 +01:00
parent 3f32e3001e
commit 60aaf90834
2 changed files with 38 additions and 37 deletions
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37
src/librustc/macros.rs
View File

@ -1,40 +1,3 @@
macro_rules! enum_from_u32 {
($(#[$attr:meta])* pub enum $name:ident {
$($variant:ident = $e:expr,)*
}) => {
$(#[$attr])*
pub enum $name {
$($variant = $e),*
}
impl $name {
pub fn from_u32(u: u32) -> Option<$name> {
$(if u == $name::$variant as u32 {
return Some($name::$variant)
})*
None
}
}
};
($(#[$attr:meta])* pub enum $name:ident {
$($variant:ident,)*
}) => {
$(#[$attr])*
pub enum $name {
$($variant,)*
}
impl $name {
pub fn from_u32(u: u32) -> Option<$name> {
$(if u == $name::$variant as u32 {
return Some($name::$variant)
})*
None
}
}
}
}
#[macro_export]
macro_rules! bug {
() => ( bug!("impossible case reached") );

38
src/librustc_data_structures/macros.rs
View File

@ -17,3 +17,41 @@ macro_rules! static_assert_size {
const _: [(); $size] = [(); ::std::mem::size_of::<$ty>()];
};
}
#[macro_export]
macro_rules! enum_from_u32 {
($(#[$attr:meta])* pub enum $name:ident {
$($variant:ident = $e:expr,)*
}) => {
$(#[$attr])*
pub enum $name {
$($variant = $e),*
}
impl $name {
pub fn from_u32(u: u32) -> Option<$name> {
$(if u == $name::$variant as u32 {
return Some($name::$variant)
})*
None
}
}
};
($(#[$attr:meta])* pub enum $name:ident {
$($variant:ident,)*
}) => {
$(#[$attr])*
pub enum $name {
$($variant,)*
}
impl $name {
pub fn from_u32(u: u32) -> Option<$name> {
$(if u == $name::$variant as u32 {
return Some($name::$variant)
})*
None
}
}
}
}