bjoernager/rust
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feature: replace lazy_static by SyncLazy from std

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This commit is contained in:
marmeladema 2020-09-01 21:42:21 +01:00
parent 67b8f9491c
commit 73a7204983
4 changed files with 12 additions and 13 deletions
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21
compiler/rustc_feature/src/builtin_attrs.rs
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@ -5,10 +5,11 @@ use AttributeType::*;
use crate::{Features, Stability};
use lazy_static::lazy_static;
use rustc_data_structures::fx::FxHashMap;
use rustc_span::symbol::{sym, Symbol};
use std::lazy::SyncLazy;
type GateFn = fn(&Features) -> bool;
macro_rules! cfg_fn {
@ -589,14 +590,12 @@ pub fn is_builtin_attr_name(name: Symbol) -> bool {
BUILTIN_ATTRIBUTE_MAP.get(&name).is_some()
}
lazy_static! {
pub static ref BUILTIN_ATTRIBUTE_MAP: FxHashMap<Symbol, &'static BuiltinAttribute> = {
let mut map = FxHashMap::default();
for attr in BUILTIN_ATTRIBUTES.iter() {
if map.insert(attr.0, attr).is_some() {
panic!("duplicate builtin attribute `{}`", attr.0);
}
pub static BUILTIN_ATTRIBUTE_MAP: SyncLazy<FxHashMap<Symbol, &'static BuiltinAttribute>> = SyncLazy::new(|| {
let mut map = FxHashMap::default();
for attr in BUILTIN_ATTRIBUTES.iter() {
if map.insert(attr.0, attr).is_some() {
panic!("duplicate builtin attribute `{}`", attr.0);
}
map
};
}
}
map
});

2
compiler/rustc_feature/src/lib.rs
View file

@ -11,6 +11,8 @@
//! even if it is stabilized or removed, *do not remove it*. Instead, move the
//! symbol to the `accepted` or `removed` modules respectively.
#![feature(once_cell)]
mod accepted;
mod active;
mod builtin_attrs;