287187230b
Support an explicit annotation for marker traits From the tracking issue for rust-lang/rfcs#1268: > It seems obvious that we should make a `#[marker]` annotation. ~ https://github.com/rust-lang/rust/issues/29864#issuecomment-368959441 This PR allows you to put `#[marker]` on a trait, at which point: - [x] The trait must not have any items ~~All of the trait's items must have defaults~~ - [x] Any impl of the trait must be empty (not override any items) - [x] But impls of the trait are allowed to overlap r? @nikomatsakis |
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| .. | ||
| attr | ||
| diagnostics | ||
| ext | ||
| parse | ||
| util | ||
| ast.rs | ||
| build.rs | ||
| Cargo.toml | ||
| config.rs | ||
| diagnostic_list.rs | ||
| early_buffered_lints.rs | ||
| entry.rs | ||
| feature_gate.rs | ||
| fold.rs | ||
| json.rs | ||
| lib.rs | ||
| ptr.rs | ||
| README.md | ||
| show_span.rs | ||
| source_map.rs | ||
| std_inject.rs | ||
| str.rs | ||
| test.rs | ||
| test_snippet.rs | ||
| tokenstream.rs | ||
| visit.rs | ||
The syntax crate contains those things concerned purely with syntax
– that is, the AST ("abstract syntax tree"), parser, pretty-printer,
lexer, macro expander, and utilities for traversing ASTs.
For more information about how these things work in rustc, see the rustc guide: