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2620eb42d7
`rustc_span::symbol` defines some things that are re-exported from
`rustc_span`, such as `Symbol` and `sym`. But it doesn't re-export some
closely related things such as `Ident` and `kw`. So you can do `use
rustc_span::{Symbol, sym}` but you have to do `use
rustc_span::symbol::{Ident, kw}`, which is inconsistent for no good
reason.
This commit re-exports `Ident`, `kw`, and `MacroRulesNormalizedIdent`,
and changes many `rustc_span::symbol::` qualifiers in `compiler/` to
`rustc_span::`. This is a 200+ net line of code reduction, mostly
because many files with two `use rustc_span` items can be reduced to
one.
31 lines
763 B
Rust
31 lines
763 B
Rust
//! Validity checking for weak lang items
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use rustc_span::{Symbol, sym};
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use crate::LangItem;
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macro_rules! weak_lang_items {
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($($item:ident, $sym:ident;)*) => {
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pub static WEAK_LANG_ITEMS: &[LangItem] = &[$(LangItem::$item,)*];
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impl LangItem {
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pub fn is_weak(self) -> bool {
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matches!(self, $(LangItem::$item)|*)
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}
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pub fn link_name(self) -> Option<Symbol> {
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match self {
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$( LangItem::$item => Some(sym::$sym),)*
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_ => None,
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}
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}
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}
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}
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}
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weak_lang_items! {
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PanicImpl, rust_begin_unwind;
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EhPersonality, rust_eh_personality;
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EhCatchTypeinfo, rust_eh_catch_typeinfo;
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}
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