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Add macro support in jump to definition feature #91264

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merged 6 commits into from
Jun 24, 2022

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GuillaumeGomez
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@GuillaumeGomez GuillaumeGomez commented Nov 26, 2021

Fixes #91174.

To do so, I check if the span comes from an expansion, and if so, I infer the original macro DefId or Span depending if it's a defined in the current crate or not.

There is one limitation due to macro expansion though:

macro_rules! yolo { () => {}}

fn foo() {
    yolo!();
}

In foo, yolo! won't be linked because after expansion, it is replaced by nothing (which seems logical). So I can't get an item from the Visitor from which I could tell if its Span comes from an expansion.

I added a test for this specific limitation alongside others.

Demo: https://rustdoc.crud.net/imperio/macro-jump-to-def/src/foo/check-source-code-urls-to-def-std.rs.html

As for the empty macro issue that cannot create a jump to definition, you can see it here.

r? @jyn514

@GuillaumeGomez GuillaumeGomez added T-rustdoc Relevant to the rustdoc team, which will review and decide on the PR/issue. A-rustdoc-ui Area: rustdoc UI (generated HTML) labels Nov 26, 2021
@rust-highfive rust-highfive added the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. label Nov 26, 2021
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jyn514 commented Jan 4, 2022

I won't have a chance to review this any time soon.

r? @camelid

@rust-highfive rust-highfive assigned camelid and unassigned jyn514 Jan 4, 2022
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camelid commented Jan 8, 2022

I don't have knowledge of this code. r? rust-lang/rustdoc

@rust-highfive rust-highfive assigned jsha and unassigned camelid Jan 8, 2022
@JohnCSimon JohnCSimon added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Jan 30, 2022
@JohnCSimon JohnCSimon added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Mar 6, 2022
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@jsha this is waiting for your review

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bors commented Mar 14, 2022

☔ The latest upstream changes (presumably #94139) made this pull request unmergeable. Please resolve the merge conflicts.

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bors commented Apr 30, 2022

☔ The latest upstream changes (presumably #93803) made this pull request unmergeable. Please resolve the merge conflicts.

@GuillaumeGomez
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I'll fix the conflict once #96636 is merged.

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jsha commented May 10, 2022

#96636 is now merged. Can you put up a demo, including a demo of the "expands to empty" behavior you mentioned?

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Here you go: https://rustdoc.crud.net/imperio/macro-jump-to-def/src/foo/check-source-code-urls-to-def-std.rs.html

As for the empty macro issue that cannot create a jump to definition, you can see it here.

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Kobzol commented May 18, 2022

I wonder why eprintln! in the demo links to doc and not source?

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It's because the code tried to find it location based on its Span and failed, using then the documentation page (which we can generate pretty easily).

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A job failed! Check out the build log: (web) (plain)

Click to see the possible cause of the failure (guessed by this bot)

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@bors retry

@bors bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Jun 22, 2022
Dylan-DPC added a commit to Dylan-DPC/rust that referenced this pull request Jun 22, 2022
…=jsha

Add macro support in jump to definition feature

Fixes rust-lang#91174.

To do so, I check if the span comes from an expansion, and if so, I infer the original macro `DefId` or `Span` depending if it's a defined in the current crate or not.

There is one limitation due to macro expansion though:

```rust
macro_rules! yolo { () => {}}

fn foo() {
    yolo!();
}
```

In `foo`, `yolo!` won't be linked because after expansion, it is replaced by nothing (which seems logical). So I can't get an item from the `Visitor` from which I could tell if its `Span` comes from an expansion.

I added a test for this specific limitation alongside others.

Demo: https://rustdoc.crud.net/imperio/macro-jump-to-def/src/foo/check-source-code-urls-to-def-std.rs.html

As for the empty macro issue that cannot create a jump to definition, you can see it [here](https://rustdoc.crud.net/imperio/macro-jump-to-def/src/foo/check-source-code-urls-to-def-std.rs.html#35).

r? `@jyn514`
JohnTitor added a commit to JohnTitor/rust that referenced this pull request Jun 24, 2022
…=jsha

Add macro support in jump to definition feature

Fixes rust-lang#91174.

To do so, I check if the span comes from an expansion, and if so, I infer the original macro `DefId` or `Span` depending if it's a defined in the current crate or not.

There is one limitation due to macro expansion though:

```rust
macro_rules! yolo { () => {}}

fn foo() {
    yolo!();
}
```

In `foo`, `yolo!` won't be linked because after expansion, it is replaced by nothing (which seems logical). So I can't get an item from the `Visitor` from which I could tell if its `Span` comes from an expansion.

I added a test for this specific limitation alongside others.

Demo: https://rustdoc.crud.net/imperio/macro-jump-to-def/src/foo/check-source-code-urls-to-def-std.rs.html

As for the empty macro issue that cannot create a jump to definition, you can see it [here](https://rustdoc.crud.net/imperio/macro-jump-to-def/src/foo/check-source-code-urls-to-def-std.rs.html#35).

r? ``@jyn514``
bors added a commit to rust-lang-ci/rust that referenced this pull request Jun 24, 2022
Rollup of 9 pull requests

Successful merges:

 - rust-lang#91264 (Add macro support in jump to definition feature)
 - rust-lang#96955 (Remove (transitive) reliance on sorting by DefId in pretty-printer)
 - rust-lang#97633 (Session object: Set OS/ABI)
 - rust-lang#98039 (Fix `panic` message for `BTreeSet`'s `range` API and document `panic` cases)
 - rust-lang#98214 (rustc_target: Remove some redundant target properties)
 - rust-lang#98280 (Improve suggestion for calling fn-like expr on type mismatch)
 - rust-lang#98394 (Fixup missing renames from `#[main]` to `#[rustc_main]`)
 - rust-lang#98411 (Update tendril)
 - rust-lang#98419 (Remove excess rib while resolving closures)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup
@bors bors merged commit 97f4d7b into rust-lang:master Jun 24, 2022
@rustbot rustbot added this to the 1.63.0 milestone Jun 24, 2022
@GuillaumeGomez GuillaumeGomez deleted the macro-jump-to-def branch June 24, 2022 13:03
Dylan-DPC added a commit to Dylan-DPC/rust that referenced this pull request Aug 10, 2022
…eGomez

rustdoc: simplify highlight.rs

Split render_with_highlighting, which took many optional parameters, into three functions for specific purposes, which each take a smaller number of mostly required parameters.

Remove some plumbing to pass through an "edition" parameter, which was used solely to avoid highlighting some 2021 Edition keywords in non-2021 code.

I've tested a build of std docs before and after, and this does not change the generated HTML at all.

Followup from rust-lang#91264 (comment)

r? `@GuillaumeGomez`
Dylan-DPC added a commit to Dylan-DPC/rust that referenced this pull request Aug 11, 2022
…eGomez

rustdoc: simplify highlight.rs

Split render_with_highlighting, which took many optional parameters, into three functions for specific purposes, which each take a smaller number of mostly required parameters.

Remove some plumbing to pass through an "edition" parameter, which was used solely to avoid highlighting some 2021 Edition keywords in non-2021 code.

I've tested a build of std docs before and after, and this does not change the generated HTML at all.

Followup from rust-lang#91264 (comment)

r? ``@GuillaumeGomez``
matthiaskrgr added a commit to matthiaskrgr/rust that referenced this pull request Aug 11, 2022
…eGomez

rustdoc: simplify highlight.rs

Split render_with_highlighting, which took many optional parameters, into three functions for specific purposes, which each take a smaller number of mostly required parameters.

Remove some plumbing to pass through an "edition" parameter, which was used solely to avoid highlighting some 2021 Edition keywords in non-2021 code.

I've tested a build of std docs before and after, and this does not change the generated HTML at all.

Followup from rust-lang#91264 (comment)

r? ```@GuillaumeGomez```
RalfJung pushed a commit to RalfJung/rust-analyzer that referenced this pull request Apr 20, 2024
rustdoc: simplify highlight.rs

Split render_with_highlighting, which took many optional parameters, into three functions for specific purposes, which each take a smaller number of mostly required parameters.

Remove some plumbing to pass through an "edition" parameter, which was used solely to avoid highlighting some 2021 Edition keywords in non-2021 code.

I've tested a build of std docs before and after, and this does not change the generated HTML at all.

Followup from rust-lang/rust#91264 (comment)

r? ``@GuillaumeGomez``
RalfJung pushed a commit to RalfJung/rust-analyzer that referenced this pull request Apr 27, 2024
rustdoc: simplify highlight.rs

Split render_with_highlighting, which took many optional parameters, into three functions for specific purposes, which each take a smaller number of mostly required parameters.

Remove some plumbing to pass through an "edition" parameter, which was used solely to avoid highlighting some 2021 Edition keywords in non-2021 code.

I've tested a build of std docs before and after, and this does not change the generated HTML at all.

Followup from rust-lang/rust#91264 (comment)

r? ``@GuillaumeGomez``
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Successfully merging this pull request may close these issues.

Jump to definition doesn't generate a link for macro calls