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| author | Nicholas Nethercote <n.nethercote@gmail.com> | 2022-11-23 15:31:02 +1100 |
|---|---|---|
| committer | Nicholas Nethercote <n.nethercote@gmail.com> | 2022-11-25 09:13:27 +1100 |
| commit | 2c5d3705ecb7ff07f5f47e736489d3abf3b64aa7 (patch) | |
| tree | 281e1da77a6183cb567615dfc2370084acf2de2a | |
| parent | 872631d0f0fadffe3220ab1bd9c8f1f2342341e2 (diff) | |
| download | rust-2c5d3705ecb7ff07f5f47e736489d3abf3b64aa7.tar.gz rust-2c5d3705ecb7ff07f5f47e736489d3abf3b64aa7.zip | |
Clarify `SyntaxExtensionKind::LegacyDerive`.
| -rw-r--r-- | compiler/rustc_expand/src/base.rs | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/compiler/rustc_expand/src/base.rs b/compiler/rustc_expand/src/base.rs index bdcd5334949..8955abebf1e 100644 --- a/compiler/rustc_expand/src/base.rs +++ b/compiler/rustc_expand/src/base.rs @@ -676,8 +676,13 @@ pub enum SyntaxExtensionKind { /// A token-based derive macro. Derive( - /// An expander with signature TokenStream -> TokenStream (not yet). + /// An expander with signature TokenStream -> TokenStream. /// The produced TokenSteam is appended to the input TokenSteam. + /// + /// FIXME: The text above describes how this should work. Currently it + /// is handled identically to `LegacyDerive`. It should be migrated to + /// a token-based representation like `Bang` and `Attr`, instead of + /// using `MultiItemModifier`. Box<dyn MultiItemModifier + sync::Sync + sync::Send>, ), |