Correct parsing of the precedence of +
#19298
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…e AST appropriately.
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alexcrichton
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…he-plus Implements RFC 438. Fixes rust-lang#19092. This is a [breaking-change]: change types like `&Foo+Send` or `&'a mut Foo+'a` to `&(Foo+Send)` and `&'a mut (Foo+'a)`, respectively. r? @brson
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Rolled into #19298 |
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Er sorry, #19342 |
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Refactor parsing of trait object types Bugs are fixed and code is cleaned up. User visible changes: - `ty` matcher in macros accepts trait object types like `Write + Send` (#39080) - Buggy priority of `+` in trait object types starting with `for` is fixed (#39317). `&for<'a> Trait<'a> + Send` is now parsed as `(&for<'a> Trait<'a>) + Send` and requires parens `&(for<'a> Trait<'a> + Send)`. For comparison, `&Send + for<'a> Trait<'a>` was parsed like this since [Nov 27, 2014](#19298). - Trailing `+`s are supported in trait objects, like in other bounds. - Better error reporting for trait objects starting with `?Sized`. Fixes #39080 Fixes #39317 [breaking-change] Closes #39298 cc #39085 (fixed, then reverted #40043 (comment)) cc #39318 (fixed, then reverted #40043 (comment)) r? @nikomatsakis
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Implements RFC 438.
Fixes #19092.
This is a [breaking-change]: change types like
&Foo+Sendor&'a mut Foo+'ato&(Foo+Send)and&'a mut (Foo+'a), respectively.r? @brson