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Add: Support #[deprecated] attribute #860

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@sevenc-nanashi sevenc-nanashi commented Jul 23, 2023

(My mother language is not English, so I may say some inappropriate things.)
This PR adds support of #[deprecated] attribute like must_use.
It supports:

  • #[deprecate],
  • #[deprecate = "note"],
  • #[deprecate(note = "note")]
    for:
  • function
  • enum
  • struct

This PR closes #408. Also, I'm new to Rust, so I should have written some ineffective code. I'd like some reviews. Thank you.

Cargo.toml Outdated
@@ -26,7 +26,7 @@ serde = { version = "1.0.103", default-features = false, features = ["derive"] }
serde_json = "1.0"
tempfile = "3"
toml = "0.5"
proc-macro2 = "1"
proc-macro2 = "1.0.60"
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ref: #859

src/bindgen/utilities.rs Outdated Show resolved Hide resolved
@sevenc-nanashi sevenc-nanashi marked this pull request as draft July 23, 2023 22:03
@sevenc-nanashi sevenc-nanashi marked this pull request as ready for review July 28, 2023 07:23
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Looks generally reasonable, thanks. Some comments below

src/bindgen/ir/annotation.rs Outdated Show resolved Hide resolved
src/bindgen/ir/annotation.rs Outdated Show resolved Hide resolved
Some(note)
} else if attrs.has_attr_word("deprecated") {
Some("".to_string())
} else if let Some(attr) = attrs.iter().find(|attr| {
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Is this code-path tested?

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It should be.

src/bindgen/ir/enumeration.rs Outdated Show resolved Hide resolved
src/bindgen/ir/enumeration.rs Outdated Show resolved Hide resolved
src/bindgen/utilities.rs Outdated Show resolved Hide resolved
if config.language == Language::Cython {
return None;
}

self.deprecated.clone()
}

pub(crate) fn format_deprecated_note(
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I have no idea around where to put these utilities.

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This doesn't use self, so at the very least should be a static function right?

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sevenc-nanashi commented Aug 25, 2023

Applied review. Could you review again please?

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src/bindgen/ir/annotation.rs Outdated Show resolved Hide resolved
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This one looks great, thanks! But rather than aborting parsing the item when we fail to parse #[deprecated], I'd rather make this return an Option, and return None for the error cases (maybe warn! ing if you want).

(I couldn't reply somehow, so replying here): Thanks, the function returns Option<String> and warn! for error cases..

@emilio emilio mentioned this pull request Sep 4, 2023
emilio added a commit that referenced this pull request Sep 4, 2023
@emilio emilio closed this in 0fb5d07 Sep 4, 2023
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emilio commented Sep 4, 2023

I rebased your changes since we had some test renaming recently, and cleaned-up a bit. Thanks for the patch! I realized I left a pending comment below, feel free to ignore.

emilio added a commit that referenced this pull request Sep 13, 2023
 * Fix swapping of `>>=` and `<<=` in constants.
 * Add support for #[deprecated] (#860).
 * Built-in support for bitflags 2.0.
 * Support for "C-unwind" ABI.
 * Generate bindings for non-public extern items if they are #[no_mangle].
bhelx pushed a commit to extism/extism that referenced this pull request Sep 20, 2023
Updates the requirements on
[cbindgen](https://github.com/mozilla/cbindgen) to permit the latest
version.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/mozilla/cbindgen/releases">cbindgen's
releases</a>.</em></p>
<blockquote>
<h2>0.26.0</h2>
<ul>
<li>Fix swapping of <code>&gt;&gt;=</code> and <code>&lt;&lt;=</code> in
constants.</li>
<li>Add support for #[deprecated] (<a
href="https://redirect.github.com/mozilla/cbindgen/issues/860">#860</a>).</li>
<li>Built-in support for bitflags 2.0.</li>
<li>Support for &quot;C-unwind&quot; ABI.</li>
<li>Generate bindings for non-public extern items if they are
#[no_mangle].</li>
</ul>
</blockquote>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/mozilla/cbindgen/blob/master/CHANGES">cbindgen's
changelog</a>.</em></p>
<blockquote>
<h1>0.26.0</h1>
<pre><code>  * Fix swapping of `&gt;&gt;=` and `&lt;&lt;=` in constants.
* Add support for #[deprecated]
([#860](mozilla/cbindgen#860)).
  * Built-in support for bitflags 2.0.
  * Support for &quot;C-unwind&quot; ABI.
* Generate bindings for non-public extern items if they are
#[no_mangle].
</code></pre>
<h2>0.25.0</h2>
<pre><code>  * Re-release of yanked 0.24.6 as a major release
  * Update MSRV to 1.57
* Support variadic arguments (`...`)
([#805](mozilla/cbindgen#805))
* Add --depfile option
([#820](mozilla/cbindgen#820))
  * Breaking changes: The `Config` struct now has a private member.
</code></pre>
<h2>0.24.6 (YANKED: depfile option was breaking, see <a
href="https://redirect.github.com/mozilla/cbindgen/issues/841">#841</a>)</h2>
<pre><code>  * Update MSRV to 1.57
* Support variadic arguments (`...`)
([#805](mozilla/cbindgen#805))
* Add --depfile option
([#820](mozilla/cbindgen#820))
</code></pre>
<h2>0.24.5</h2>
<pre><code>  * Don't enforce tempfile version.
</code></pre>
<h2>0.24.4</h2>
<pre><code> * Move expand infinite recursion fix
([#799](mozilla/cbindgen#799))
* Add with_cpp_compat to the builder
([#796](mozilla/cbindgen#796))
* Handle never type in return position consistently
([#780](mozilla/cbindgen#780))
* Fix warnings ([#816](mozilla/cbindgen#816),
[#819](mozilla/cbindgen#819))
* Updated documentation
([#788](mozilla/cbindgen#788),
[#791](mozilla/cbindgen#791),
[#792](mozilla/cbindgen#792),
[#810](mozilla/cbindgen#810),
[#823](mozilla/cbindgen#823))
</code></pre>
<h2>0.24.3</h2>
<pre><code> * Make struct expressions correctly generated through
typedefs ([#768](mozilla/cbindgen#768)).
</code></pre>
<h2>0.24.2</h2>
<pre><code>  * Make bitfield operators use explicit constructors.
</code></pre>
<h2>0.24.1</h2>
<pre><code> * Add support for unary negation
([#765](mozilla/cbindgen#765)).
* Make more bitfield operators constexpr
([#765](mozilla/cbindgen#765)).
</code></pre>
<h2>0.24.0</h2>
<pre><code> * Basic const generic support
([#759](mozilla/cbindgen#759),
[#760](mozilla/cbindgen#760)
[#762](mozilla/cbindgen#762)).
</code></pre>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/mozilla/cbindgen/commit/703b53c06f9fe2dbc0193d67626558cfa84a0f62"><code>703b53c</code></a>
v0.26.0</li>
<li><a
href="https://github.com/mozilla/cbindgen/commit/56f0febc9b5cc7ee957912d55b1fdee67f34d766"><code>56f0feb</code></a>
Update MSRV in Readme</li>
<li><a
href="https://github.com/mozilla/cbindgen/commit/9b4a14958ea6ce2a61accb9cdbad84cfca9c3013"><code>9b4a149</code></a>
Add support for out-of-line bitfields declarations</li>
<li><a
href="https://github.com/mozilla/cbindgen/commit/35f2e44ef2792d1c2e9e97f8ccf4458b79ae88f2"><code>35f2e44</code></a>
Update URLs</li>
<li><a
href="https://github.com/mozilla/cbindgen/commit/85eb0f4436e90d479f5d041b98f160ce2e66eeea"><code>85eb0f4</code></a>
Bump clippy msrv to 1.64</li>
<li><a
href="https://github.com/mozilla/cbindgen/commit/43af1ebe6e4d2bb9ec90167616a3d88bf34c7c0b"><code>43af1eb</code></a>
Handle bitflags bits method calls</li>
<li><a
href="https://github.com/mozilla/cbindgen/commit/f72e44715697981b9317b7f0688216990e60346d"><code>f72e447</code></a>
CHANGES: Note #[deprecated] support.</li>
<li><a
href="https://github.com/mozilla/cbindgen/commit/14730702306533c2805c9dd4a6846e762a4bbcca"><code>1473070</code></a>
utilities: annotation: Clean-up deprecated parsing and getter.</li>
<li><a
href="https://github.com/mozilla/cbindgen/commit/0fb5d07ae4ede7d3fcf91c47bcfa29090ce0a8b9"><code>0fb5d07</code></a>
Add support for #[deprecated].</li>
<li><a
href="https://github.com/mozilla/cbindgen/commit/d8355da4664f68d399631f2f215cbf991c121d2f"><code>d8355da</code></a>
Support &quot;C-unwind&quot; ABI</li>
<li>Additional commits viewable in <a
href="https://github.com/mozilla/cbindgen/compare/v0.25.0...0.26.0">compare
view</a></li>
</ul>
</details>
<br />


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Translate #[deprecated] on Rust functions to deprecated attribute
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