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`syntax_expand` -> `rustc_expand`
`syntax_pos` -> `rustc_span`
`syntax_ext` -> `rustc_builtin_macros`
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2. mir::Mutability -> ast::Mutability.
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Someone forgot to update the error message after `#[proc_macro]` and
`#[proc_macro_attribute]` were stabilized.
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`AttrKind` is a new type with two variants, `Normal` and `DocComment`. It's a
big performance win (over 10% in some cases) because `DocComment` lets doc
comments (which are common) be represented very cheaply.
`Attribute` gets some new helper methods to ease the transition:
- `has_name()`: check if the attribute name matches a single `Symbol`; for
`DocComment` variants it succeeds if the symbol is `sym::doc`.
- `is_doc_comment()`: check if it has a `DocComment` kind.
- `{get,unwrap}_normal_item()`: extract the item from a `Normal` variant;
panic otherwise.
Fixes #60935.
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This kind of thing just makes the code harder to read.
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This is done by moving some data definitions to syntax::expand.
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Change-Id: Ib3a396e7334d209fe6c6ef425bbfc7b2ae471378
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Change-Id: Ib3a396e7334d209fe6c6ef425bbfc7b2ae471378
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Instead just use `pprust::path_to_string(..)` where needed.
This has two benefits:
a) The AST definition is now independent of printing it.
(Therefore we get closer to extracting a data-crate.)
b) Debugging should be easier as program flow is clearer.
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This ensures that we match the order used by proc macro metadata
serialization.
Fixes #64251
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Use these to create call-site spans for AST passes when needed.
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For naming consistency with everything else in this area
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`Ident` has had a full span rather than just a `SyntaxContext` for a long time now.
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Each call to `fully_expand_fragment` is something unique, interesting, and requiring attention.
It represents a "root" of expansion and its use means that something unusual is happening, like eager expansion or expansion performed outside of the primary expansion pass.
So, it shouldn't be hide under a generic visitor call.
Also, from all the implemented visitor methods only two were actually used.
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MetaItem.span was always equivalent
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Few other minor renamings for consistency.
Remove one unused dependency from `rustc_passes`.
Fix libsyntax tests.
Fix rebase.
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