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Used to get E parameter from `Result<T, E>`
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`ModuleId` needs to be able to represent blocks, and only the
associated `DefMap` will know how to construct that `ModuleId`
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7351: Show const params in completions r=Veykril a=Veykril
bors r+
![image](https://user-images.githubusercontent.com/3757771/105080872-bba76680-5a91-11eb-91cd-0910da4c8312.png)
Co-authored-by: Lukas Wirth <[email protected]>
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This adds documentation for the newly added function. It might be a bit too
detailed, but I like it that way :)
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This is done by adding a `ret_type` method to `hir::Function`.
I followed `assoc_fn_params` convention by creating a new `RetType` type,
that contains the actual return type accessible via a `ty` method.
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7068: Add VSCode command to view the hir of a function body r=theotherphil a=theotherphil
Will fix https://github.com/rust-analyzer/rust-analyzer/issues/7061. Very rough initial version just to work out where I needed to wire everything up.
@matklad would you be happy merging a hir visualiser of some kind? If so, do you have any thoughts on what you'd like it show, and how?
I've spent very little time on this thus far, so I'm fine with throwing away the contents of this PR, but I want to avoid taking the time to make this more polished/interactive/useful only to discover that no-one else has any interest in this functionality.
![image](https://user-images.githubusercontent.com/1974256/103236081-bb58f700-493b-11eb-9d12-55ae1b870f8f.png)
Co-authored-by: Phil Ellison <[email protected]>
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special cased
In #6901 some special case handling for proc-macros was introduced to
prevent panicing as they have no AST. Now the new HasSource::source
method is used that returns an option.
Generally this was a pretty trivial change, the only thing of much
interest is that `hir::MacroDef` now implements `TryToNav` not `ToNav`
as this allows us to handle `HasSource::source` now returning an option.
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To start migrating HasSource::source to return an Option.
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7021: Track labels in the HIR r=matklad a=Veykril
Groundwork for #6966
Co-authored-by: Lukas Wirth <[email protected]>
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6964: Add full pattern completions for Struct and Variant patterns r=matklad a=Veykril
Just gonna call it full pattern completion as pattern completion is already implemented in a sense by showing idents in pattern position. What this does is basically complete struct and variant patterns where applicable(function params, let statements and refutable pattern locations).
This does not replace just completing the corresponding idents of the structs and variants, instead two completions are shown for these, a completion for the ident itself and a completion for the pattern(if the pattern make sense to be used that is). I figured in some cases one would rather type out the pattern manually if it has a lot of fields but you only care about one since this completion would cause one more work in the end since you would have to delete all the extra matched fields again.
These completions are tagged as `CompletionKind::Snippet`, not sure if that is the right one here.
<details>
<summary>some gifs</summary>
![dx2lxgzhj3](https://user-images.githubusercontent.com/3757771/102719967-6987ef80-42f1-11eb-8ae0-8aff53777860.gif)
![EP2E7sJLkB](https://user-images.githubusercontent.com/3757771/102785777-c7264580-439e-11eb-8a64-f142e19fb65b.gif)
![JMNHHWknr9](https://user-images.githubusercontent.com/3757771/102785796-d1e0da80-439e-11eb-934b-218ada31b51c.gif)
</details>
Co-authored-by: Lukas Wirth <[email protected]>
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6921: Higher-ranked trait bounds for where clauses r=flodiebold a=Veykril
There is a slight problem with this which is also noted in a FIXME now but `LifetimeParameters` of these ForLifetime where clauses allocate the lifetimes in the corresponding arena as if they were lifetimes of the item itself and not just the clause they belong to. I wasn't entirely sure what I could do about this but given nothing really uses lifetimes like that currently I figured it might be fine? Open to suggestions for that problem.
Co-authored-by: Lukas Wirth <[email protected]>
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6901: Temp fixes panic caused by no ast for proc-macro r=maklad a=edwin0cheng
There are some panic when hover/goto definition for proc-macro. It is because in current design, we don't have `ast-node` for proc-macro and then it trigger [this](https://github.com/rust-analyzer/rust-analyzer/blob/479d1f7eec22c3564867223e2093f14774092528/crates/hir/src/has_source.rs#L116) line to panic.
This PR is a temp fix for all of these similar to https://github.com/rust-analyzer/rust-analyzer/blob/bd4c352831662762ee7a66da77ec9adf623b0a0a/crates/completion/src/render/macro_.rs#L42
Co-authored-by: Edwin Cheng <[email protected]>
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We used to have `Def` suffix for all symbols, but we moved off from
that. `FunctionDef` isn't better than `Function`. Looks like we've
forgot to change `Impl` though!
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