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0b411f56e1
This is a pure refactoring split out from #80689. It represents the most invasive part of that PR, requiring changes in every caller of `parse_outer_attributes` In order to eagerly expand `#[cfg]` attributes while preserving the original `TokenStream`, we need to know the range of tokens that corresponds to every attribute target. This is accomplished by making `parse_outer_attributes` return an opaque `AttrWrapper` struct. An `AttrWrapper` must be converted to a plain `AttrVec` by passing it to `collect_tokens_trailing_token`. This makes it difficult to accidentally construct an AST node with attributes without calling `collect_tokens_trailing_token`, since AST nodes store an `AttrVec`, not an `AttrWrapper`. As a result, we now call `collect_tokens_trailing_token` for attribute targets which only support inert attributes, such as generic arguments and struct fields. Currently, the constructed `LazyTokenStream` is simply discarded. Future PRs will record the token range corresponding to the attribute target, allowing those tokens to be removed from an enclosing `collect_tokens_trailing_token` call if necessary. |
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| .. | ||
| ast | ||
| attr | ||
| expand | ||
| util | ||
| ast.rs | ||
| crate_disambiguator.rs | ||
| entry.rs | ||
| lib.rs | ||
| mut_visit.rs | ||
| node_id.rs | ||
| ptr.rs | ||
| token.rs | ||
| tokenstream.rs | ||
| visit.rs | ||