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1862: Assoc item resolution refactoring (again) r=flodiebold a=flodiebold
This is #1849, with the associated type selection code removed for now. Handling cycles there will need some more thought.
Co-authored-by: Florian Diebold <[email protected]>
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Type-relative paths (`<T>::foo`) also need to work in type context, for example
`<T>::Item` is legal. So rather than returning the type ref from the resolver
function, just check it before.
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When resolving an associated item in value namespace, use the `Ty` lowering code
for the segments before the last instead of replicating it.
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E.g. `fn foo<T: Iterator>() -> T::Item`. It seems that rustc does this only for
type parameters and only based on their bounds, so we also only consider traits
from bounds.
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I must confess I don't really understand what this code is trying to
do, but it definitely misreports changes during fixedpoint iteration,
and no tests fail if I remove it, so...
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1817: Support path starting with a type r=matklad a=uHOOCCOOHu
The path syntax `<Ty>::foo`
Co-authored-by: uHOOCCOOHu <[email protected]>
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1848: Parse `..` as a full pattern r=matklad a=ecstatic-morse
Resolves #1479.
This PR implements [RFC 2707](https://github.com/rust-lang/rfcs/pull/2707) in the parser. It introduces a new `DotDotPat` AST node modeled on `PlaceholderPat` and changes the parsing of tuple and slice patterns to conform to the RFC.
Notably, this PR does *not* change the resulting AST when `..` appears in a struct pattern (e.g. `Struct { a, b: c, .. }`). I *think* this is the behavior mandated by RFC 2707, but someone should confirm this.
Co-authored-by: Dylan MacKenzie <[email protected]>
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This is modeled on `PlaceholderPat`.
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... and remove Ty::UnselectedProjection. It'll be handled differently.
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That way, we are able to get rid of a number of unreachable statements
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Nameres related types, like `PerNs<Resolution>`, can represent
unreasonable situations, like a local in a type namespace. We should
clean this up, by requiring that call-site specifies the kind of
resolution it expects.
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1818: Infer box expression r=matklad a=uHOOCCOOHu
Infer `box e` to be `std::boxed::Box<T>` where `e: T`
Co-authored-by: uHOOCCOOHu <[email protected]>
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1821: Macro completion tweaks r=matklad a=SomeoneToIgnore
Thanks @uHOOCCOOHu for making the macro completion happen :)
I've added a few tweaks to the current completion to make it a bit more convenient:
* Automatically add braces and put the editor cursor inside of them:
<img width="159" alt="image" src="https://user-images.githubusercontent.com/2690773/64737220-022b9f00-d4f5-11e9-8088-76d4678921ab.png">
Currently I have to add the braces manually which is a bit cumbersome.
One further improvement can be to detect if macro accepts no parameters and place the cursor differently for this case.
* Add an exclamation mark to the macro completion label
This helps to distinguish macros from other completion items and also allows to show only macros in completion if you type `!`:
<img width="722" alt="image" src="https://user-images.githubusercontent.com/2690773/64736987-8b8ea180-d4f4-11e9-8355-2ce4f83b7aa8.png">
<img width="732" alt="image" src="https://user-images.githubusercontent.com/2690773/64737214-ffc94500-d4f4-11e9-946e-1ba2db1c7fb1.png">
Additionally, automatic formatting hooks had adjusted two `help.rs` files, I've added them as a last commit to the PR even though they are not really related.
Co-authored-by: Kirill Bulatov <[email protected]>
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