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Combine HasAttrs and HasTokens into AstLike

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When token-based attribute handling is implemeneted in #80689,
we will need to access tokens from `HasAttrs` (to perform
cfg-stripping), and we will to access attributes from `HasTokens` (to
construct a `PreexpTokenStream`).

This PR merges the `HasAttrs` and `HasTokens` traits into a new
`AstLike` trait. The previous `HasAttrs` impls from `Vec<Attribute>` and `AttrVec`
are removed - they aren't attribute targets, so the impls never really
made sense.
This commit is contained in:
Aaron Hill 2021-02-23 10:21:20 -05:00
parent 9fa580b117
commit fb5fec017b
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13 changed files with 264 additions and 206 deletions
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2
compiler/rustc_ast/src/lib.rs
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@ -40,6 +40,7 @@ pub mod util {
}
pub mod ast;
pub mod ast_like;
pub mod attr;
pub mod crate_disambiguator;
pub mod entry;
@ -52,6 +53,7 @@ pub mod tokenstream;
pub mod visit;
pub use self::ast::*;
pub use self::ast_like::AstLike;
use rustc_data_structures::stable_hasher::{HashStable, StableHasher};