Mazdak Farrokhzad 8cba0a9073 Rollup merge of #66183 - Centril:empty-vis-trait-decl, r=petrochenkov ... *Syntactically* permit visibilities on trait items & enum variants Fixes #65041 Suppose we have `$vis trait_item` or `$vis enum_variant` and `$vis` is a `:vis` macro fragment. Before this PR, this would fail to parse. This is now instead allowed as per language team consensus in https://github.com/rust-lang/rust/issues/65041#issuecomment-538105286. (See added tests for elaboration.) Moreover, we now also permit visibility modifiers on trait items & enum variants *syntactically* but reject them with semantic checks (in `ast_validation`): ```rust #[cfg(FALSE)] trait Foo { pub fn bar(); } // OK #[cfg(FALSE)] enum E { pub U } // OK ```		2019-11-22 19:57:41 +01:00
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pprust	syntactically allow visibility on trait item & enum variant	2019-11-11 06:33:09 +01:00
helpers.rs	Move pp::Printer helpers to direct impl	2019-07-10 07:13:20 -04:00
pp.rs	Move pp::Printer helpers to direct impl	2019-07-10 07:13:20 -04:00
pprust.rs	ast: Keep string literals in ABIs precisely	2019-11-16 21:21:37 +03:00