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* Merge #1795bors[bot]2019-09-097-239/+393
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1795: Make macro scope a real name scope and fix some details r=matklad a=uHOOCCOOHu This PR make macro's module scope a real name scope in `PerNs`, instead of handling `Either<PerNs, MacroDef>` everywhere. In `rustc`, the macro scope behave exactly the same as type and value scope. It is valid that macros, types and values having exact the same name, and a `use` statement will import all of them. This happened to module `alloc::vec` and macro `alloc::vec!`. So `Either` is not suitable here. There is a trap that not only does `#[macro_use]` import all `#[macro_export] macro_rules`, but also imports all macros `use`d in the crate root. In other words, it just _imports all macros in the module scope of crate root_. (Visibility of `use` doesn't matter.) And it also happened to `libstd` which has `use alloc_crate::vec;` in crate root to re-export `alloc::vec`, which it both a module and a macro. The current implementation of `#[macro_use] extern crate` doesn't work here, so that is why only macros directly from `libstd` like `dbg!` work, while `vec!` from `liballoc` doesn't. This PR fixes this. Another point is that, after some tests, I figure out that _`macro_rules` does NOT define macro in current module scope at all_. It defines itself in legacy textual scope. And if `#[macro_export]` is given, it also is defined ONLY in module scope of crate root. (Then being `macro_use`d, as mentioned above) (Well, the nightly [Declarative Macro 2.0](https://github.com/rust-lang/rust/issues/39412) simply always define in current module scope only, just like normal items do. But it is not yet supported by us) After this PR, in my test, all non-builtin macros are resolved now. (Hover text for documentation is available) So it fixes #1688 . Since compiler builtin macros are marked as `#[rustc_doc_only_macro]` instead of `#[macro_export]`, we can simply tweak the condition to let it resolved, but it may cause expansion error. Some critical notes are also given in doc-comments. <img width="447" alt="Screenshot_20190909_223859" src="https://user-images.githubusercontent.com/14816024/64540366-ac1ef600-d352-11e9-804f-566ba7559206.png"> Co-authored-by: uHOOCCOOHu <[email protected]>
| * StripuHOOCCOOHu2019-09-092-12/+3
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| * Make macro scope a real name scopeuHOOCCOOHu2019-09-098-236/+399
| | | | | | | | Fix some details about module scoping
* | modify testsNiko Matsakis2019-09-091-6/+6
| | | | | | | | | | | | | | | | Some method resolution tests now yield `{unknown}` where they did not before. Other tests now succeed, likely because this is helping the solver steer its efforts.
* | also make "unknown" case non-enumerableNiko Matsakis2019-09-091-1/+1
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* | make all traits non-enumerableNiko Matsakis2019-09-091-9/+1
| | | | | | | | | | As discussed on Zulip, this actually matches the present behavior of rustc.
* | document moduleAleksey Kladov2019-09-091-7/+26
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* | introduce hir debugging infraAleksey Kladov2019-09-094-3/+90
|/ | | | | | | | | | | | This is to make debugging rust-analyzer easier. The idea is that `dbg!(krate.debug(db))` will print the actual, fuzzy crate name, instead of precise ID. Debug printing infra is a separate thing, to make sure that the actual hir doesn't have access to global information. Do not use `.debug` for `log::` logging: debugging executes queries, and might introduce unneded dependencies to the crate graph
* Fix testuHOOCCOOHu2019-09-081-3/+0
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* Rename `textual_macro` -> `legacy_macro`uHOOCCOOHu2019-09-084-29/+39
| | | | Add comments
* Revert "Replace with immutable map to avoid heavy cloning"uHOOCCOOHu2019-09-083-9/+2
| | | | | | This reverts commit 2c494eb803c88ef5d23607c3b156fce60c2b8076. See: https://github.com/rust-analyzer/rust-analyzer/pull/1784#issuecomment-529119924
* Replace with immutable map to avoid heavy cloninguHOOCCOOHu2019-09-083-2/+9
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* Resolve textual scoped macros inside itemuHOOCCOOHu2019-09-084-9/+65
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* Support textual scoped macrosuHOOCCOOHu2019-09-084-34/+158
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* cleanup hir db importsAleksey Kladov2019-09-0824-43/+65
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* don't cycle when processing macros from prelude in preludeAleksey Kladov2019-09-072-2/+33
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* Fix crash for super trait cyclesFlorian Diebold2019-09-073-19/+39
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* Fix Chalk environmentsFlorian Diebold2019-09-072-3/+4
| | | | | The clauses need to be wrapped in `FromEnv` clauses for elaboration (i.e. things like inferring `T: Clone` from `T: Copy`) to work correctly.
* Use traits from where clauses for method resolutionFlorian Diebold2019-09-074-21/+44
| | | | | E.g. if we have `T: some::Trait`, we can call methods from that trait without it needing to be in scope.
* Lower `Fn(X, Y) -> Z` pathsFlorian Diebold2019-09-072-12/+48
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* Lower bounds on trait definition, and resolve assoc types from super traitsFlorian Diebold2019-09-0710-38/+101
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* Add some more testsFlorian Diebold2019-09-071-0/+205
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* Merge #1779bors[bot]2019-09-062-49/+51
|\ | | | | | | | | | | | | | | 1779: minor r=matklad a=matklad Co-authored-by: Aleksey Kladov <[email protected]>
| * minorAleksey Kladov2019-09-062-49/+51
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* | make source_root API more abstractAleksey Kladov2019-09-062-7/+9
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* Merge #1771bors[bot]2019-09-053-18/+91
|\ | | | | | | | | | | | | | | | | | | | | 1771: Further tweak for macro_use on extern crate r=matklad a=uHOOCCOOHu Some more tweaks to #1743 to behave more like `rustc` 1. Hoist macros from `#[macro_use] extern crate`, so that they can be used before `extern crate`. 2. Implicit `#[macro_use]` for `prelude` if exists Co-authored-by: uHOOCCOOHu <[email protected]>
| * Hoist macros from extern crate with macro_useuHOOCCOOHu2019-09-052-14/+20
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| * Consider prelude to be `macro_use`uHOOCCOOHu2019-09-053-4/+71
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* | rename test file to match impl fileAleksey Kladov2019-09-052-1/+1
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* | move mod resolution to a separate fileAleksey Kladov2019-09-053-183/+190
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* Merge #1743bors[bot]2019-09-055-12/+117
|\ | | | | | | | | | | | | | | 1743: Support `#[macro_use]` on `extern crate` r=matklad a=uHOOCCOOHu Unfortunately, #1688 is still an issue. My guess is wrong :( Co-authored-by: uHOOCCOOHu <[email protected]>
| * Fix typouHOOCCOOHu2019-09-051-2/+2
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| * Let `macro_use` bypass module scopeuHOOCCOOHu2019-09-052-35/+52
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| * Fix import strategy of `macro_use` and its testuHOOCCOOHu2019-09-024-9/+26
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| * Add testuHOOCCOOHu2019-08-311-5/+50
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| * Support resolution of `#[macro_use] extern crate`uHOOCCOOHu2019-08-312-2/+28
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* | Make type walking infrastructure a bit nicerFlorian Diebold2019-09-038-133/+132
| | | | | | | | | | If/when we switch to using Chalk's Ty, we'll need to replace this by its `Fold` trait, but I didn't want to import the whole thing just yet.
* | Properly format `impl Trait<Type = Foo>` typesFlorian Diebold2019-09-032-23/+97
| | | | | | | | | | | | It's a bit complicated because we basically have to 'undo' the desugaring, and the result is very dependent on the specifics of the desugaring and will probably produce weird results otherwise.
* | Add support for associated type bindings (`where Trait<Type = X>`)Florian Diebold2019-09-036-52/+183
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* | Add test for assoc type bindingsFlorian Diebold2019-09-031-0/+65
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* | Correctly build BodySourceMap for macro-expanded expressionsAleksey Kladov2019-09-036-66/+119
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* | slightly simplify expr lowering flowAleksey Kladov2019-09-033-129/+136
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* | clearer ignoreAleksey Kladov2019-09-031-1/+1
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* | remove needless refsAleksey Kladov2019-09-031-2/+2
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* | use recrod terminology for hir::PatAleksey Kladov2019-09-033-8/+7
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* | move expr lowering to lowerAleksey Kladov2019-09-033-653/+667
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* | fix hir for new block syntaxAleksey Kladov2019-09-026-42/+50
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* | remove useless traitAleksey Kladov2019-09-021-2/+2
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* | Add an expr_source method analogous to the source methods in the code modelFlorian Diebold2019-09-026-30/+79
| | | | | | | | ... and use that instead of exposing the source map.
* | Report type mismatches in analysis-statsFlorian Diebold2019-09-022-7/+7
| | | | | | | | Only the number usually; each one individually when running with -v.
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