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Rename `impl_defaultness` to `defaultness`
Since this isn't just about the `impl`.
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Migrate `item_trait_alias` to Askama
This PR migrates `item_trait_alias` to Askama
Refers https://github.com/rust-lang/rust/issues/108868
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Implemented wrap_item_write
Update wrap_item
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inlined
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r=me,GuillaumeGomez,Manishearth
rustdoc: add interaction delays for tooltip popovers
Preview:
* [notable traits](http://notriddle.com/rustdoc-demo-html-3/delay-tooltip/testing/struct.Vec.html#method.iter)
* [panicking code block](http://notriddle.com/rustdoc-demo-html-3/delay-tooltip/testing/struct.Vec.html#indexing)
Designing a good hover microinteraction is a matter of guessing user intent from what are, literally, vague gestures. In this case, guessing if hovering in our out of the tooltip base is intentional or not.
To figure this out, a few different techniques are used:
* When the mouse pointer enters a tooltip anchor point, its hitbox is grown on the bottom, where the popover is/will appear. This was already there before this commit: search "hover tunnel" in rustdoc.css for the implementation.
* This commit adds a delay when the mouse pointer enters the base anchor, in case the mouse pointer was just passing through and the user didn't want to open it.
* This commit also adds a delay when the mouse pointer exits the tooltip's base anchor or its popover, before hiding it.
* A fade-out animation is layered onto the pointer exit delay to immediately inform the user that they successfully dismissed the popover, while still providing a way for them to cancel it if it was a mistake and they still wanted to interact with it.
* No animation is used for revealing it, because we don't want people to try to interact with an element while it's in the middle of fading in: either they're allowed to interact with it while it's fading in, meaning it can't serve as mistake- proofing for opening the popover, or they can't, but they might try and be frustrated.
See also:
* https://www.nngroup.com/articles/timing-exposing-content/
* https://www.nngroup.com/articles/tooltip-guidelines/
* https://bjk5.com/post/44698559168/breaking-down-amazons-mega-dropdown
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r=GuillaumeGomez
rustdoc: Fix LinkReplacer link matching
It currently just uses the first link with the same href which might not necessarily be the matching one.
This fixes replacements when there are several links to the same item but with different text (e.g. `[X] and [struct@X]`). It also fixes replacements in summaries since those use a links list with empty hrefs, so currently all links would always match the first link by href but then not match its text. This could also lead to a panic in the `original_lext[1..len() - 1]` part when the first link only has a single character, which is why the new code uses `.get(..)` instead.
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rustdoc: simplify `clean` by removing `FnRetTy`
The default fn ret ty is always unit. Just use that.
Looking back at the time when `FnRetTy` (then called `FunctionRetTy`) was first added to rustdoc, it seems to originally be there because `-> !` was a special form: the never type didn't exist back then.
https://github.com/rust-lang/rust/commit/eb01b17b06eb35542bb80ff7456043b0ed5572ba#diff-384affc1b4190940f114f3fcebbf969e7e18657a71ef9001da6b223a036687d9L921-L924
`DefaultReturn` was later added to rustdoc to mirror a change in HIR, which added a variant for DefaultReturn because it makes `Span` management easier. This isn't needed in rustdoc, since it doesn't carry spans.
https://github.com/rust-lang/rust/commit/3f0cc8011aef3f530663302d525bd2d8cb493db5#diff-384affc1b4190940f114f3fcebbf969e7e18657a71ef9001da6b223a036687d9R1144
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r=notriddle
Fix re-export of doc hidden item inside private item not displayed
This PR fixes this bug:
```rust
mod private_module {
#[doc(hidden)]
pub struct Public;
}
pub use crate::private_module::Public as Foo;
```
`pub use crate::private_module::Public as Foo;` should be visible in the generated doc (and not inlined!) but currently isn't. This PR fixes it.
r? `@notriddle`
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Migrate `item_proc_macro` to Askama
This PR migrates `item_proc_macro` to Askama
Refers https://github.com/rust-lang/rust/issues/108868
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The default fn ret ty is always unit. Just use that.
Looking back at the time when `FnRetTy` (then called
`FunctionRetTy`) was first added to rustdoc, it seems to originally
be there because `-> !` was a special form: the never type didn't
exist back then.
https://github.com/rust-lang/rust/commit/eb01b17b06eb35542bb80ff7456043b0ed5572ba#diff-384affc1b4190940f114f3fcebbf969e7e18657a71ef9001da6b223a036687d9L921-L924
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Each of `{D,Subd}iagnosticMessage::{Str,Eager}` has a comment:
```
// FIXME(davidtwco): can a `Cow<'static, str>` be used here?
```
This commit answers that question in the affirmative. It's not the most
compelling change ever, but it might be worth merging.
This requires changing the `impl<'a> From<&'a str>` impls to `impl
From<&'static str>`, which involves a bunch of knock-on changes that
require/result in call sites being a little more precise about exactly
what kind of string they use to create errors, and not just `&str`. This
will result in fewer unnecessary allocations, though this will not have
any notable perf effects given that these are error paths.
Note that I was lazy within Clippy, using `to_string` in a few places to
preserve the existing string imprecision. I could have used `impl
Into<{D,Subd}iagnosticMessage>` in various places as is done in the
compiler, but that would have required changes to *many* call sites
(mostly changing `&format("...")` to `format!("...")`) which didn't seem
worthwhile.
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Migrate `item_foreign_type` to Askama
This PR continues the migration of `print_item.rs` functions to Askama. This piece of work migrates the function `item_foreign_type`
Refers https://github.com/rust-lang/rust/issues/108868
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Fix formatting
Fix CI
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Clean up usage of `cx.tcx` when `tcx` is already set into a variable
I discovered a few cases where `cx.tcx` (and equivalents) was used whereas `tcx` was already stored into a variable. In those cases, better to just use `tcx` directly.
r? `@notriddle`
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rustdoc: Add `ItemTemplate` trait and related functions to avoid repetitively wrapping existing functions
Context: https://github.com/rust-lang/rust/pull/111430#discussion_r1200672507
This trait will be used extensively in performing migrations to Askama templates (tracking issue: https://github.com/rust-lang/rust/issues/108868)
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rustc driver: Remove argument 0 before at-expansion to prevent ICE
Under Unix-based operating systems, when I execute rustc by setting argv0 to ``@/dev/null`,` it will expand command-line arguments from this file, leading to an empty arglist, which then triggers an ICE by trying to remove first argument.
The panic message is this:
```
thread 'main' panicked at 'range start index 1 out of range for slice of length 0', compiler/rustc_driver/src/lib.rs:972:17
```
My fix is to remove the first argument before expanding arguments.
<details>
<summary>Full backtrace</summary>
```sh
% (exec -a `@/dev/null` `rustup which rustc`)
thread 'main' panicked at 'range start index 1 out of range for slice of length 0', compiler/rustc_driver/src/lib.rs:972:17
stack backtrace:
0: 0x7fcec776659a - std::backtrace_rs::backtrace::libunwind::trace::h595f06c70adcc478
at /rustc/2c8cc343237b8f7d5a3c3703e3a87f2eb2c54a74/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
1: 0x7fcec776659a - std::backtrace_rs::backtrace::trace_unsynchronized::h177a0149c76cdde9
at /rustc/2c8cc343237b8f7d5a3c3703e3a87f2eb2c54a74/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
2: 0x7fcec776659a - std::sys_common::backtrace::_print_fmt::hc0701fd2c3530c58
at /rustc/2c8cc343237b8f7d5a3c3703e3a87f2eb2c54a74/library/std/src/sys_common/backtrace.rs:65:5
3: 0x7fcec776659a - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hd4cd115d8750fd6c
at /rustc/2c8cc343237b8f7d5a3c3703e3a87f2eb2c54a74/library/std/src/sys_common/backtrace.rs:44:22
4: 0x7fcec77c839e - core::fmt::write::h93e2f5923c7eca08
at /rustc/2c8cc343237b8f7d5a3c3703e3a87f2eb2c54a74/library/core/src/fmt/mod.rs:1213:17
5: 0x7fcec7756be5 - std::io::Write::write_fmt::h8162dbb45f0b9e62
at /rustc/2c8cc343237b8f7d5a3c3703e3a87f2eb2c54a74/library/std/src/io/mod.rs:1682:15
6: 0x7fcec7766365 - std::sys_common::backtrace::_print::h1835ef8a8f9066da
at /rustc/2c8cc343237b8f7d5a3c3703e3a87f2eb2c54a74/library/std/src/sys_common/backtrace.rs:47:5
7: 0x7fcec7766365 - std::sys_common::backtrace::print::hcb5e6388b9235f41
at /rustc/2c8cc343237b8f7d5a3c3703e3a87f2eb2c54a74/library/std/src/sys_common/backtrace.rs:34:9
8: 0x7fcec776912f - std::panicking::default_hook::{{closure}}::h9c084969ccf9a722
at /rustc/2c8cc343237b8f7d5a3c3703e3a87f2eb2c54a74/library/std/src/panicking.rs:267:22
9: 0x7fcec7768e6b - std::panicking::default_hook::h68fa2ba3c3c6c12f
at /rustc/2c8cc343237b8f7d5a3c3703e3a87f2eb2c54a74/library/std/src/panicking.rs:286:9
10: 0x7fcecaab56e4 - <rustc_driver[f4ad927b3c57833d]::DEFAULT_HOOK::{closure#0}::{closure#0} as core[d16e85342ea223d9]::ops::function::FnOnce<(&core[d16e85342ea223d9]::panic::panic_info::PanicInfo,)>>::call_once::{shim:vtable#0}
11: 0x7fcec776996a - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h4e6ced11e07d8b24
at /rustc/2c8cc343237b8f7d5a3c3703e3a87f2eb2c54a74/library/alloc/src/boxed.rs:2002:9
12: 0x7fcec776996a - std::panicking::rust_panic_with_hook::h8d5c434518ef298c
at /rustc/2c8cc343237b8f7d5a3c3703e3a87f2eb2c54a74/library/std/src/panicking.rs:692:13
13: 0x7fcec77696e9 - std::panicking::begin_panic_handler::{{closure}}::hf33414f5dabf6faf
at /rustc/2c8cc343237b8f7d5a3c3703e3a87f2eb2c54a74/library/std/src/panicking.rs:579:13
14: 0x7fcec7766a4c - std::sys_common::backtrace::__rust_end_short_backtrace::hc50389427413bb75
at /rustc/2c8cc343237b8f7d5a3c3703e3a87f2eb2c54a74/library/std/src/sys_common/backtrace.rs:137:18
15: 0x7fcec77693f2 - rust_begin_unwind
at /rustc/2c8cc343237b8f7d5a3c3703e3a87f2eb2c54a74/library/std/src/panicking.rs:575:5
16: 0x7fcec77c4d43 - core::panicking::panic_fmt::h2de7a7938f816de8
at /rustc/2c8cc343237b8f7d5a3c3703e3a87f2eb2c54a74/library/core/src/panicking.rs:64:14
17: 0x7fcec77cb492 - core::slice::index::slice_start_index_len_fail_rt::h0c87d85ce11d10f6
at /rustc/2c8cc343237b8f7d5a3c3703e3a87f2eb2c54a74/library/core/src/slice/index.rs:53:5
18: 0x7fcec77cb416 - core::slice::index::slice_start_index_len_fail::h504609f2a6b168d1
at /rustc/2c8cc343237b8f7d5a3c3703e3a87f2eb2c54a74/library/core/src/slice/index.rs:41:9
19: 0x7fceca0eca1f - rustc_driver[f4ad927b3c57833d]::handle_options
20: 0x7fceca0e037f - <rustc_driver[f4ad927b3c57833d]::RunCompiler>::run
21: 0x7fceca0dfd0d - <core[d16e85342ea223d9]::panic::unwind_safe::AssertUnwindSafe<rustc_driver[f4ad927b3c57833d]::main::{closure#0}> as core[d16e85342ea223d9]::ops::function::FnOnce<()>>::call_once
22: 0x7fceca17ce89 - rustc_driver[f4ad927b3c57833d]::main
23: 0x564f5f008a87 - rustc_main[f164605d1302e295]::main
24: 0x564f5f008973 - std[3da461b304582a2c]::sys_common::backtrace::__rust_begin_short_backtrace::<fn(), ()>
25: 0x564f5f008969 - <std[3da461b304582a2c]::rt::lang_start<()>::{closure#0} as core[d16e85342ea223d9]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
26: 0x7fcec774795c - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h699977d052768608
at /rustc/2c8cc343237b8f7d5a3c3703e3a87f2eb2c54a74/library/core/src/ops/function.rs:287:13
27: 0x7fcec774795c - std::panicking::try::do_call::h4e121e623c70f903
at /rustc/2c8cc343237b8f7d5a3c3703e3a87f2eb2c54a74/library/std/src/panicking.rs:483:40
28: 0x7fcec774795c - std::panicking::try::hf9d919e062bc178a
at /rustc/2c8cc343237b8f7d5a3c3703e3a87f2eb2c54a74/library/std/src/panicking.rs:447:19
29: 0x7fcec774795c - std::panic::catch_unwind::h7a7b12272684cb97
at /rustc/2c8cc343237b8f7d5a3c3703e3a87f2eb2c54a74/library/std/src/panic.rs:140:14
30: 0x7fcec774795c - std::rt::lang_start_internal::{{closure}}::hd96b0eb4844b8762
at /rustc/2c8cc343237b8f7d5a3c3703e3a87f2eb2c54a74/library/std/src/rt.rs:148:48
31: 0x7fcec774795c - std::panicking::try::do_call::h1af1f88f4f92a22c
at /rustc/2c8cc343237b8f7d5a3c3703e3a87f2eb2c54a74/library/std/src/panicking.rs:483:40
32: 0x7fcec774795c - std::panicking::try::hf20d7abea7f0f097
at /rustc/2c8cc343237b8f7d5a3c3703e3a87f2eb2c54a74/library/std/src/panicking.rs:447:19
33: 0x7fcec774795c - std::panic::catch_unwind::hb0e084c3a9c042e4
at /rustc/2c8cc343237b8f7d5a3c3703e3a87f2eb2c54a74/library/std/src/panic.rs:140:14
34: 0x7fcec774795c - std::rt::lang_start_internal::hca9d5c7277f5b67c
at /rustc/2c8cc343237b8f7d5a3c3703e3a87f2eb2c54a74/library/std/src/rt.rs:148:20
35: 0x564f5f008ab7 - main
36: 0x7fcec74a1790 - <unknown>
37: 0x7fcec74a184a - __libc_start_main
38: 0x564f5f00899e - <unknown>
39: 0x0 - <unknown>
error: internal compiler error: unexpected panic
note: the compiler unexpectedly panicked. this is a bug.
note: we would appreciate a bug report: https://github.com/rust-lang/rust/issues/new?labels=C-bug%2C+I-ICE%2C+T-compiler&template=ice.md
note: rustc 1.68.0 (2c8cc3432 2023-03-06) running on x86_64-unknown-linux-gnu
query stack during panic:
end of query stack
```
</details>
I also checked if I can trigger a similar problem by passing empty argument list to `execve`, but at least under Linux, it seems to always insert an empty first argument if there are none.
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r=GuillaumeGomez,fmease
rustdoc: get unnormalized link destination for suggestions
Fixes #110111
This bug, and the workaround in this PR, is closely linked to [raphlinus/pulldown-cmark#441], getting offsets of link components. In particular, pulldown-cmark doesn't provide the offsets of the contents of a link.
To work around this, rustdoc parser parts of a link definition itself.
[raphlinus/pulldown-cmark#441]: https://github.com/raphlinus/pulldown-cmark/issues/441
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r=notriddle
Fix re-export of doc hidden macro not showing up
It's part of the follow-up of https://github.com/rust-lang/rust/pull/109697.
Re-exports of doc hidden macros should be visible. It was the only kind of re-export of doc hidden item that didn't show up.
r? `@notriddle`
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Fixes #110111
This bug, and the workaround in this commit, is closely linked to
[raphlinus/pulldown-cmark#441], getting offsets of link
components. In particular, pulldown-cmark doesn't provide the
offsets of the contents of a link.
To work around this, rustdoc parser parts of a link definition
itself.
[raphlinus/pulldown-cmark#441]: https://github.com/raphlinus/pulldown-cmark/issues/441
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Migrate `item_static` to Askama
This pull request addresses the type signature of the item_static function in our codebase. Previously, this function accepted a mutable reference to a Buffer for writing output. The current changes modify this to instead accept a mutable reference to any type that implements the Write trait.
Referes https://github.com/rust-lang/rust/issues/108868
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rustdoc: Cleanup doc string collapsing
`doc_value` and (former) `collapsed_doc_value` can be implemented in terms of each other, and `doc_value` doesn't need the `Option`.
This PR doesn't do any semantic changes, only refactoring, although some pre-existing choices between `doc_value` and `collapsed_doc_value` across rustdoc may be questionable.
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Prevent crash when a path is not resolved in intra-doc link
Fixes https://github.com/rust-lang/rust/issues/111189.
cc `@petrochenkov`
r? `@notriddle`
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Designing a good hover microinteraction is a matter of guessing
user intent from what are, literally, vague gestures. In this case,
guessing if hovering in our out of the tooltip base is intentional
or not.
To figure this out, a few different techniques are used:
* When the mouse pointer enters a tooltip anchor point, its hitbox
is grown on the bottom, where the popover is/will appear. This was
already there before this commit: search "hover tunnel" in
rustdoc.css for the implementation.
* This commit adds a delay when the mouse pointer enters the base
anchor, in case the mouse pointer was just passing through and the
user didn't want to open it.
* This commit also adds a delay when the mouse pointer exits the
tooltip's base anchor or its popover, before hiding it.
* A fade-out animation is layered onto the pointer exit delay to
immediately inform the user that they successfully dismissed the
popover, while still providing a way for them to cancel it if
it was a mistake and they still wanted to interact with it.
* No animation is used for revealing it, because we don't want
people to try to interact with an element while it's in the
middle of fading in: either they're allowed to interact with
it while it's fading in, meaning it can't serve as mistake-
proofing for opening the popover, or they can't, but they
might try and be frustrated.
See also:
* https://www.nngroup.com/articles/timing-exposing-content/
* https://www.nngroup.com/articles/tooltip-guidelines/
* https://bjk5.com/post/44698559168/breaking-down-amazons-mega-dropdown
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This was added to control percentage sizes, in
79956b96e875e6ba2bfa551fabda6b7896f988ac
Now, the only percentage size is [`border-radius`], which is
based on the size of the box itself, not its containing block.
This leaves the property unused.
[`border-radius`]: https://developer.mozilla.org/en-US/docs/Web/CSS/border-radius
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Avoid `&format("...")` calls in error message code.
Some error message cleanups. Best reviewed one commit at a time.
r? `@davidtwco`
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Add missing backslash in HTML string
Found this missing one when looking at code.
r? `@notriddle`
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