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This means default methods can always be found and "Important traits" will include all spotlight traits.
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rustdoc: Don't import macros from private imports
Fixes #47038
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zackmdavis:the_3rd_of_2_hardest_problems_in_computer_science, r=QuietMisdreavus
fix the doc-comment-decoration-trimming edge-case rustdoc ICE
This `horizontal_trim` function strips the leading whitespace from
doc-comments that have a left-asterisk-margin:
```
/**
* You know what I mean—
*
* comments like this!
*/
```
The index of the column of asterisks is `i`, and if trimming is deemed
possible, we slice each line from `i+1` to the end of the line. But if, in
particular, `i` was 0 _and_ there was an empty line (as in the example
given in the reporting issue), we ended up panicking trying to slice an
empty string from 0+1 (== 1).
Let's tighten our check to say that we can't trim when `i` is even the same
as the length of the line, not just when it's greater. (Any such cases
would panic trying to slice `line` from `line.len()+1`.)
Resolves #47197.
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rustdoc: Add missing src links for generic impls on trait pages
`implementor2item` would return `None` for generic impls so instead this clones the entire `clean::Item` into the `implementors` map which simplifies some code.
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This `horizontal_trim` function strips the leading whitespace from
doc-comments that have a left-asterisk-margin:
/**
* You know what I mean—
*
* comments like this!
*/
The index of the column of asterisks is `i`, and if trimming is deemed
possible, we slice each line from `i+1` to the end of the line. But if, in
particular, `i` was 0 _and_ there was an empty line (as in the example
given in the reporting issue), we ended up panicking trying to slice an
empty string from 0+1 (== 1).
Let's tighten our check to say that we can't trim when `i` is even the same
as the length of the line, not just when it's greater. (Any such cases
would panic trying to slice `line` from `line.len()+1`.)
Resolves #47197.
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Issue 46976
ICE is due to an empty path segments, so I set the path to be the same as the in band ty params symbol. (I think this is how regular generics end up being handled?)
Pinging @cramertj, this is your code I'm editing here.
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The modules may be private or may even be enums so it would generate dead links.
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`implementor2item` would return `None` for generic impls so instead this clones the entire `clean::Item` into the `implementors` map which simplifies some code.
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Const-eval array lengths in rustdoc.
Fixes #46727
r? @eddyb
Big thanks to @eddyb for helping me figure this out.
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tweaks and fixes for doc(include)
This PR makes a handful of changes around `#[doc(include="file.md")]` (https://github.com/rust-lang/rust/issues/44732):
* Turns errors when loading files into full errors. This matches the original RFC text.
* Makes the `missing_docs` lint check for `#[doc(include="file.md")]` as well as regular `#[doc="text"]` attributes.
* Loads files included by `#[doc(include="file.md")]` into dep-info, mirroring the behavior of `include_str!()` and friends.
* Adds or modifies tests to check for all of these.
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Escape more items in the sidebar when needed
Fixes #46724.
r? @QuietMisdreavus
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Add an option to allow rustdoc to list modules by appearance
The `--sort-modules-by-appearance` option will list modules in the
order that they appear in the source, rather than sorting them
alphabetically (as is the default). This resolves #8552.
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Do not display hidden types, fixes issue 23912
Fixes #23912.
r? @QuietMisdreavus
(It's the one I was talking about a few days ago, just close it if it's useless.)
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rustdoc: Fix issues with cross-crate inlined associated items
* Visibility was missing from impl items.
* Attributes and docs were missing from consts and types in impls.
* Const default values were missing from traits.
This unifies the code that handles associated items from impls and traits.
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Fix invalid HTML escape
Fixes #46289.
r? @QuietMisdreavus
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Hide private trait type params and show hidden items with document-private
As discussed in #46380, this PR removes the `strip-hidden` pass from `--document-private-items` which allows showing `#[doc(hidden)]` with rustdoc.
The second commit removes the trait implementation from the docs if the trait's parameter is private.
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rustc: Filter out bogus extern crate warnings
Rustdoc has for some time now used the "everybody loops" pass in the compiler to
avoid typechecking and otherwise avoid looking at implementation details.
In #46115 the placement of this pass was pushed back in the compiler to after
macro expansion to ensure that it works with macro-expanded code as well. This
in turn caused the regression in #46271.
The bug here was that the resolver was producing `def_id` instances for
"possibly unused extern crates" which would then later get processed during
typeck to actually issue lint warnings. The problem was that *after* resolution
these `def_id` nodes were actually removed from the AST by the "everybody loops"
pass. This later, when we tried to take a look at `def_id`, caused the compiler
to panic.
The fix applied here is a bit of a heavy hammer which is to just, in this one
case, ignore the `extern crate` lints if the `def_id` looks "bogus" in any way
(basically if it looks like the node was removed after resolution). The real
underlying bug here is probably that the "everybody loops" AST pass is being
stressed to much beyond what it was originally intended to do, but this should
at least fix the ICE for now...
Closes #46271
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After renaming the structs and enums the htmldocck strings still
contained the old names. This lead to test failure.
These htmldocck tests have been updated to use the proper names of the
rust structs and traits.
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Trait's implementations with private type parameters were displayed in
the implementing struct's documentation until now.
With this change any trait implementation that uses a private type
parameter is now hidden in the docs.
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When using `#[doc(hidden)]` elements are hidden from docs even when the
rustdoc flag `--document-private-items` is set.
This behavior has been changed to display all hidden items when the flag
is active.
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Rustdoc has for some time now used the "everybody loops" pass in the compiler to
avoid typechecking and otherwise avoid looking at implementation details.
In #46115 the placement of this pass was pushed back in the compiler to after
macro expansion to ensure that it works with macro-expanded code as well. This
in turn caused the regression in #46271.
The bug here was that the resolver was producing `def_id` instances for
"possibly unused extern crates" which would then later get processed during
typeck to actually issue lint warnings. The problem was that *after* resolution
these `def_id` nodes were actually removed from the AST by the "everybody loops"
pass. This later, when we tried to take a look at `def_id`, caused the compiler
to panic.
The fix applied here is a bit of a heavy hammer which is to just, in this one
case, ignore the `extern crate` lints if the `def_id` looks "bogus" in any way
(basically if it looks like the node was removed after resolution). The real
underlying bug here is probably that the "everybody loops" AST pass is being
stressed to much beyond what it was originally intended to do, but this should
at least fix the ICE for now...
Closes #46271
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Rustoc item summaries that are headers were not displayed at all because
they started with whitespace.
This PR fixes this and now removes the whitespace and then displays the
block.
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* Visibility was missing from impl items.
* Attributes and docs were missing from consts and types in impls.
* Const default values were missing from traits.
This unifies the code that handles associated items from impls and traits.
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r=GuillaumeGomez
Properly handle reexport of foreign items.
Handles `pub use` of `extern { fn, static, type }`. Also plug in some more `match` arms where handling `extern type` is reasonable.
Fixed #46098.
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rustdoc: include external files in documentation (RFC 1990)
Part of https://github.com/rust-lang/rfcs/pull/1990 (needs work on the error reporting, which i'm deferring to after this initial PR)
cc #44732
Also fixes #42760, because the prep work for the error reporting made it easy to fix that at the same time.
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Partial implementation of https://github.com/rust-lang/rfcs/pull/1990
(needs error reporting work)
cc #44732
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Display negative traits implementation
Fixes #45816.
r? @QuietMisdreavus
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r=GuillaumeGomez,QuietMisdreavus
show in docs whether the return type of a function impls Iterator/Read/Write
Closes #25928
This PR makes it so that when rustdoc documents a function, it checks the return type to see whether it implements a handful of specific traits. If so, it will print the impl and any associated types. Rather than doing this via a whitelist within rustdoc, i chose to do this by a new `#[doc]` attribute parameter, so things like `Future` could tap into this if desired.
### Known shortcomings
~~The printing of impls currently uses the `where` class over the whole thing to shrink the font size relative to the function definition itself. Naturally, when the impl has a where clause of its own, it gets shrunken even further:~~ (This is no longer a problem because the design changed and rendered this concern moot.)
The lookup currently just looks at the top-level type, not looking inside things like Result or Option, which renders the spotlights on Read/Write a little less useful:
<details><summary>`File::{open, create}` don't have spotlight info (pic of old design)</summary>
</details>
All three of the initially spotlighted traits are generically implemented on `&mut` references. Rustdoc currently treats a `&mut T` reference-to-a-generic as an impl on the reference primitive itself. `&mut Self` counts as a generic in the eyes of rustdoc. All this combines to create this lovely scene on `Iterator::by_ref`:
<details><summary>`Iterator::by_ref` spotlights Iterator, Read, and Write (pic of old design)</summary>
</details>
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Handles `pub use` of `extern { fn, static, type }`. Also plug in some more
`match` arms where handling `extern type` is reasonable.
Fixed #46098.
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r=QuietMisdreavus
Support `extern type` in rustdoc.
Fixes #45640.
(cc #43467)
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Fixes #45640.
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rustdoc: tweak notes on ignore/compile_fail examples
Part of https://github.com/rust-lang/rust/issues/44927
This is a softening of these notices to mention *why* a given example has a given callout, rather then telling viewers to be careful with an example. It also changes the character used for these samples from a warning logo to a circle-i/information logo.
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