Rustdoc: Cache resolved links by bugadani · Pull Request #77700 · rust-lang/rust

bugadani · 2020-10-08T11:51:29Z

A step towards #77681

rust-highfive · 2020-10-08T11:51:32Z

Some changes occurred in intra-doc-links.

cc @jyn514

rust-highfive · 2020-10-08T11:51:34Z

r? @GuillaumeGomez

(rust_highfive has picked a reviewer for you, use r? to override)

GuillaumeGomez · 2020-10-08T11:54:37Z

Looks good to me but I'll let @jyn514 handles it.

r? @jyn514

bugadani · 2020-10-08T12:26:58Z

So right now, 2 tests (should) have issues, because some [error] links are expected to fire errors multiple times. I plan on changing those tests so the links in them are unique and emit the expected errors.

src/test/rustdoc-ui/link-res-error-reported-once.rs

src/librustdoc/passes/collect_intra_doc_links.rs

jyn514 · 2020-10-08T15:28:09Z

src/test/rustdoc-ui/intra-links-warning.rs

@Manishearth do you know what this is meant to test? Is it that you get a warning on different items?

If it's just testing the warning is emitted at all I'd rather use the cases in intra-link-errors.rs I think.

src/librustdoc/passes/collect_intra_doc_links.rs

src/test/rustdoc-ui/intra-links-ambiguity.stderr

src/librustdoc/passes/collect_intra_doc_links.rs

jyn514 · 2020-10-08T18:27:16Z

src/librustdoc/passes/collect_intra_doc_links.rs

Doesn't need to be fixed here, but I wonder if this copy is actually necessary ...

src/librustdoc/passes/collect_intra_doc_links.rs

bugadani · 2020-10-08T18:58:30Z

src/librustdoc/passes/collect_intra_doc_links.rs

This function could be reworked to not have any closures and not be longer as it is currently. I wanted to do it, but for the sake of minimalism, this PR is a mess right now anyway and doesn't need any more.

Sure, seems like a good follow-up but I agree it should be separate.

jyn514 · 2020-10-08T18:59:27Z

Cache resolve errors

Why did you make this change? Performance only matters if there are no errors, and it made the code a lot more complicated

src/librustdoc/passes/collect_intra_doc_links.rs

bugadani · 2020-10-08T19:01:52Z

Cache resolve errors

Why did you make this change? Performance only matters if there are no errors, and it made the code a lot more complicated

I think I've been doing this for too long today and misunderstood you somewhere :)

jyn514 · 2020-10-08T19:02:21Z

Feel free to take a break :) I have homework I should be doing too 😆

bugadani · 2020-10-08T19:35:54Z

I didn't undo my lifetime-related changes, but I can if the Cow -> String is inconvenient.

jyn514 · 2020-10-08T19:55:01Z

I didn't undo my lifetime-related changes, but I can if the Cow -> String is inconvenient.

More that it causes unnecessary copies; it's probably not necessary but I'd rather not remove it since it's already there.

jyn514 · 2020-12-14T15:46:26Z

...
122	   |      ^^^^^^^^^
123	   |      |
124	   |      this link resolves to the associated function `g`, which is not in the type namespace
-	   |      help: to link to the associated function, add parentheses: `T::g()`
+	   |      help: to link to the associated function, add parentheses: `type@T::g()`
126	
-	error: unresolved link to `T::h`
+	error: unresolved link to `T::h!`
128	  --> $DIR/errors.rs:91:6
129	   |
130	LL | /// [T::h!]

-	   |      ^^^^^ the trait `T` has no macro named `h`
+	   |      ^^^^^ the trait `T` has no macro named `h!`
132	
-	error: unresolved link to `m`
+	error: unresolved link to `m()`
134	  --> $DIR/errors.rs:98:6
135	   |
136	LL | /// [m()]

137	   |      ^^^
138	   |      |
139	   |      this link resolves to the macro `m`, which is not in the value namespace
-	   |      help: to link to the macro, add an exclamation mark: `m!`
+	   |      help: to link to the macro, add an exclamation mark: `m()!`
141	
142	error: aborting due to 20 previous errors

Looks like this is now adding suggestions based on the original text instead of a normalized version, which isn't correct: type@T::g() isn't valid syntax and IMO error: unresolved link to `T::h!` looks like a bug where it interpreted ! as part of the link name.

bugadani · 2020-12-14T15:51:36Z

Yup, I know, maybe I broke it during rebase

bugadani · 2020-12-14T23:05:17Z

@jyn514 I undid the last two commits - the ones that spread the DiagInfo love around. I made at least two mistakes somewhere (the two commits had two different sets of test failures) and I don't have the brainpower to debug that right now. Also, the patch that depends on this one will conflict with the current split of diagnostic/resolution data. So right now this PR is a bit undercooked, but at least tests pass (locally).

jyn514 · 2020-12-14T23:38:25Z

I undid the last two commits - the ones that spread the DiagInfo love around.

Sounds good to me, those probably belonged in different PRs anyway.

I am not sure when rust-lang/rustc-perf#802 will be merged :( if it isn't by Friday I think we should just merge this anyway. Delegating to you in case I forget.

@bors delegate=bugadani

bors · 2020-12-14T23:38:27Z

✌️ @bugadani can now approve this pull request

jyn514 · 2020-12-15T00:26:37Z

@bors r+

See rust-lang/rustc-perf#802 (comment)

bors · 2020-12-15T00:26:38Z

📌 Commit fa64c27 has been approved by jyn514

bors · 2020-12-15T00:40:00Z

⌛ Testing commit fa64c27 with merge a1321f94ae00930fe0e091defe47f8d0dce31df1...

bors · 2020-12-15T01:56:10Z

💔 Test failed - checks-actions

jyn514 · 2020-12-15T02:00:30Z

 = note: LINK : fatal error LNK1201: error writing to program database 'D:\a\rust\rust\build\i686-pc-windows-msvc\test\run-make-fulldeps\issue64319\issue64319\bar.pdb'; check for insufficient disk space, invalid path, or insufficient privilege
          

error: aborting due to previous error

make[1]: *** [Makefile:17: all] Error 1

@bors retry

I feel like I've seen this spurious error before, @rust-lang/infra do you recognize it?

bors · 2020-12-15T04:06:57Z

⌛ Testing commit fa64c27 with merge e1cce06...

bors · 2020-12-15T06:31:42Z

☀️ Test successful - checks-actions
Approved by: jyn514
Pushing e1cce06 to master...

pickfire · 2021-01-22T11:08:05Z

src/librustdoc/passes/collect_intra_doc_links.rs

                        resolution_failure(
                            self,
-                            &item,
+                            diag.item,


Why not just change these 4 arguments to take diag?

Either it was forgotten, or resolution_failure is called in a lot of places where creating DiagInfo would have been a chore. I don't recall exactly.

Yes, a few other places but they could be made to use the struct.

rust-highfive assigned GuillaumeGomez Oct 8, 2020

rust-highfive added the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. label Oct 8, 2020

rust-highfive assigned jyn514 and unassigned GuillaumeGomez Oct 8, 2020

bugadani force-pushed the rustdoc-link-cache branch from 3a4f812 to ff4f5c6 Compare October 8, 2020 12:09

jyn514 added A-intra-doc-links Area: Intra-doc links, the ability to link to items in docs by name T-rustdoc Relevant to the rustdoc team, which will review and decide on the PR/issue. labels Oct 8, 2020

jyn514 reviewed Oct 8, 2020

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jyn514 added S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Oct 8, 2020

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jyn514 added S-blocked Status: Blocked on something else such as an RFC or other implementation work. and removed S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. labels Oct 8, 2020

bugadani commented Oct 8, 2020

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src/test/rustdoc-ui/intra-links-ambiguity.stderr Outdated Show resolved Hide resolved

jyn514 added C-cleanup Category: PRs that clean code up or issues documenting cleanup. I-compiletime Issue: Problems and improvements with respect to compile times. labels Oct 8, 2020

bugadani force-pushed the rustdoc-link-cache branch from a2318a6 to ce944bb Compare October 8, 2020 18:19

jyn514 reviewed Oct 8, 2020

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bugadani commented Oct 8, 2020

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src/librustdoc/passes/collect_intra_doc_links.rs Outdated Show resolved Hide resolved

bugadani force-pushed the rustdoc-link-cache branch from 46a2338 to cca98a2 Compare October 8, 2020 19:43

Add test case for Self:: links

fa64c27

bugadani force-pushed the rustdoc-link-cache branch 2 times, most recently from c4b165d to 696cb27 Compare December 14, 2020 10:13

bugadani force-pushed the rustdoc-link-cache branch from 696cb27 to fa64c27 Compare December 14, 2020 23:01

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-blocked Status: Blocked on something else such as an RFC or other implementation work. labels Dec 15, 2020

bors added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. and removed S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. labels Dec 15, 2020

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 Dec 15, 2020

bors added the merged-by-bors This PR was explicitly merged by bors. label Dec 15, 2020

bors merged commit e1cce06 into rust-lang:master Dec 15, 2020

rustbot added this to the 1.50.0 milestone Dec 15, 2020

bugadani deleted the rustdoc-link-cache branch December 19, 2020 16:55

jyn514 changed the title ~~Rustdoc: Cache resolved links in current module~~ Rustdoc: Cache resolved links Jan 15, 2021

bugadani mentioned this pull request Jan 15, 2021

Add rustdoc performance blog post rust-lang/blog.rust-lang.org#760

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pickfire reviewed Jan 22, 2021

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