Add option to output constexpr generated constant primitive values #481
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emilio
requested changes
Mar 3, 2020
| } else { | ||
| out.write("const "); | ||
| out.write(if in_body { "inline " } else { "static " }); | ||
| if let Type::ConstPtr(..) = self.ty { |
There was a problem hiding this comment.
Indentation here looks off.
tests/rust/constant_constexpr.toml
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| [const] | ||
| allow_constexpr = true | ||
| allow_static_const = true | ||
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tests/rust/constant_constexpr.rs
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| } | ||
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| pub const SomeFoo: Foo = Foo{ x: 99, }; | ||
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This is controlled by the [const] allow_constexpr option, similar to the allow_static_const option. It's only applied to primitives currently.
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I've added a section to the docs.md as well. I'm not really sure how in-depth I should make it, so I kept it simple. |
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The build was red because of rustfmt, so I fixed that and pushed 4628716. Thank you! |
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1276: Bump cbindgen from 0.13.1 to 0.13.2 r=tomtau a=dependabot-preview[bot] Bumps [cbindgen](https://github.com/eqrion/cbindgen) from 0.13.1 to 0.13.2. <details> <summary>Changelog</summary> <p><em>Sourced from <a href="https://github.com/eqrion/cbindgen/blob/master/CHANGES">cbindgen's changelog</a>.</em></p> <blockquote> <h2>0.13.2</h2> <pre><code> * Constants now have suitable documentation. ([#471](mozilla/cbindgen#471)) * Fixed some C warnings by emitting void when there are no arguments. ([#470](mozilla/cbindgen#470)) * Avoids reading cargo.toml when not needed, which can cause panics in workspace situations. * Only write `default` cases if the switch is not exhaustive. ([#475](mozilla/cbindgen#475)) * Some warnings have been refined. ([#477](mozilla/cbindgen#477)) * Code generation for static arrays has been fixed. ([#479](mozilla/cbindgen#479)) * Opt-in support for constexpr in constants. ([#481](mozilla/cbindgen#481)) * Fix C code generation and some warnings when extremely large constants are used. ([#490](mozilla/cbindgen#490)) * Proper escaping of enum variants and fields. ([#483](mozilla/cbindgen#483)) * Added support for RefCell (as an opaque type) and Cell. ([#489](mozilla/cbindgen#489)) </code></pre> </blockquote> </details> <details> <summary>Commits</summary> <ul> <li><a href="https://github.com/eqrion/cbindgen/commit/17d7aad7d07dce8aa665aedbc75c39953afe1600"><code>17d7aad</code></a> Release v0.13.2</li> <li><a href="https://github.com/eqrion/cbindgen/commit/fc577f2a28898b5345ed431fb172c4ede84fa2bf"><code>fc577f2</code></a> support large integer constants (<a href="https://github-redirect.dependabot.com/eqrion/cbindgen/issues/490">#490</a>)</li> <li><a href="https://github.com/eqrion/cbindgen/commit/6218281443ff9bb21c9502369497f7a7c24dd078"><code>6218281</code></a> updated constant_big test case with large negative numbers</li> <li><a href="https://github.com/eqrion/cbindgen/commit/8638652d1d72296888b540f1ae4a194991eba08b"><code>8638652</code></a> ran rustfmt</li> <li><a href="https://github.com/eqrion/cbindgen/commit/7101465403dec23f8752d4b6359e998e89ca3b6b"><code>7101465</code></a> avoid gcc warning by appending ULL suffix to integer literals that are too bi...</li> <li><a href="https://github.com/eqrion/cbindgen/commit/5a4d74b9118928946dd10a49c4891a2610c55437"><code>5a4d74b</code></a> ir: escape export_name while writing source of EnumVariant</li> <li><a href="https://github.com/eqrion/cbindgen/commit/e2b2c81221581f21e40d98045323c5d0b7844e0c"><code>e2b2c81</code></a> ir: escape tagged union's field name</li> <li><a href="https://github.com/eqrion/cbindgen/commit/c3442809b9e0be814918de6281469a955acfe7df"><code>c344280</code></a> tests: Add tests for cell and refcell.</li> <li><a href="https://github.com/eqrion/cbindgen/commit/249b41ce8a57db2c46fdd74b65f045cfc46ed4c0"><code>249b41c</code></a> ir: Add support for RefCell and Cell.</li> <li><a href="https://github.com/eqrion/cbindgen/commit/6654f99251769e9e037824d471f9f39e8d536b90"><code>6654f99</code></a> main: Provide a somewhat-useful error message for --verify changes.</li> <li>Additional commits viewable in <a href="https://github.com/eqrion/cbindgen/compare/v0.13.1...v0.13.2">compare view</a></li> </ul> </details> <br /> [](https://dependabot.com/compatibility-score/?dependency-name=cbindgen&package-manager=cargo&previous-version=0.13.1&new-version=0.13.2) Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting `@dependabot rebase`. [//]: # (dependabot-automerge-start) [//]: # (dependabot-automerge-end) --- <details> <summary>Dependabot commands and options</summary> <br /> You can trigger Dependabot actions by commenting on this PR: - `@dependabot rebase` will rebase this PR - `@dependabot recreate` will recreate this PR, overwriting any edits that have been made to it - `@dependabot merge` will merge this PR after your CI passes on it - `@dependabot squash and merge` will squash and merge this PR after your CI passes on it - `@dependabot cancel merge` will cancel a previously requested merge and block automerging - `@dependabot reopen` will reopen this PR if it is closed - `@dependabot close` will close this PR and stop Dependabot recreating it. 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Bump cbindgen from 0.9.1 to 0.14.1 Bumps [cbindgen](https://github.com/eqrion/cbindgen) from 0.9.1 to 0.14.1. <details> <summary>Changelog</summary> <p><em>Sourced from <a href="https://github.com/eqrion/cbindgen/blob/master/CHANGES">cbindgen's changelog</a>.</em></p> <blockquote> <h2>0.14.1</h2> <pre><code> * Handle mangling pointers. ([#508](mozilla/cbindgen#508)) * Unconditionally generate a return statement in partialeq implementations. ([#509](mozilla/cbindgen#509)) </code></pre> <h2>0.14.0</h2> <pre><code> * Minor tweak at how [export.exclude] is handled to allow excluding generic instantiations in C mode. ([#501](mozilla/cbindgen#501)) * Documented cpp_compat option. ([#496](mozilla/cbindgen#496)) * Fixed a panic when parsing associated constants for a built-in type. ([#494](mozilla/cbindgen#494)) </code></pre> <h2>0.13.2</h2> <pre><code> * Constants now have suitable documentation. ([#471](mozilla/cbindgen#471)) * Fixed some C warnings by emitting void when there are no arguments. ([#470](mozilla/cbindgen#470)) * Avoids reading cargo.toml when not needed, which can cause panics in workspace situations. * Only write `default` cases if the switch is not exhaustive. ([#475](mozilla/cbindgen#475)) * Some warnings have been refined. ([#477](mozilla/cbindgen#477)) * Code generation for static arrays has been fixed. ([#479](mozilla/cbindgen#479)) * Opt-in support for constexpr in constants. ([#481](mozilla/cbindgen#481)) * Fix C code generation and some warnings when extremely large constants are used. ([#490](mozilla/cbindgen#490)) * Proper escaping of enum variants and fields. ([#483](mozilla/cbindgen#483)) * Added support for RefCell (as an opaque type) and Cell. ([#489](mozilla/cbindgen#489)) </code></pre> <h2>0.13.1</h2> <pre><code> * Support `#[cfg]` on individual enum variants. ([#469](mozilla/cbindgen#469)) </code></pre> <h2>0.13.0</h2> <pre><code> * Support 'swift_name' attributes on generated functions ([#449](mozilla/cbindgen#449)) * Add [export.pre_body] to config ([#452](mozilla/cbindgen#452)) * Handle new line in doc attribute ([#454](mozilla/cbindgen#454)) * Add support for `Self` in tagged enums, structs and unions ([#455](mozilla/cbindgen#455), [#455](mozilla/cbindgen#455), [#456](mozilla/cbindgen#456)) * Make sentinel variant respect regular config ([#459](mozilla/cbindgen#459)) * Fix layout of tagged enums with size under some configurations ([#463](mozilla/cbindgen#463)) * Add an option to allow configuring the order of function names in generated headers ([#466](mozilla/cbindgen#466)) </code></pre> <h2>0.12.2</h2> <pre><code> * Fixed version detection with lockfile v2. mozilla/cbindgen#446 * Added support for export_name on functions. mozilla/cbindgen#447 </code></pre> <h2>0.12.1</h2> <pre><code> * Added support for #[repr*64)] on enums. mozilla/cbindgen#441 * Added support to generate plain enums instead of enum classes for C++. mozilla/cbindgen#443 * Fixed dependency resolution with lockfile v2. mozilla/cbindgen#438 </code></pre> </tr></table> ... (truncated) </blockquote> </details> <details> <summary>Commits</summary> <ul> <li><a href="https://github.com/eqrion/cbindgen/commit/0761b9bbe48d01ded1bbec45bbeea5544b3b1002"><code>0761b9b</code></a> Release 0.14.1</li> <li><a href="https://github.com/eqrion/cbindgen/commit/33d9ecf11f300bd03f431e9f3417c063e681380c"><code>33d9ecf</code></a> Handle mangling pointers.</li> <li><a href="https://github.com/eqrion/cbindgen/commit/0fed9eebc47abcd31e0e69357cd39262c8a5a6cc"><code>0fed9ee</code></a> enum: Unconditionally generate a return statement in partialeq implementations.</li> <li><a href="https://github.com/eqrion/cbindgen/commit/a519f1bda444a0c6c01464296a052d9a05e1d9c4"><code>a519f1b</code></a> Actually use the temp dir for temporary compiled objects.</li> <li><a href="https://github.com/eqrion/cbindgen/commit/4a38a48937264d6ec162b2fd47ffd0e7a091ca72"><code>4a38a48</code></a> Release 0.14.0</li> <li><a href="https://github.com/eqrion/cbindgen/commit/39bae60ad7ac4711d8fccc0d098ecef98b37d559"><code>39bae60</code></a> Generate test object files in a temporary directory instead of in-tree</li> <li><a href="https://github.com/eqrion/cbindgen/commit/ec1631f3e47686e6e0c1b7641bb08b0e39c59250"><code>ec1631f</code></a> Allow excluding monomorph structs in C mode.</li> <li><a href="https://github.com/eqrion/cbindgen/commit/6fd245096dcd5c50c1065b4bd6ce62a09df0b39b"><code>6fd2450</code></a> Add missing cpp_compat documentation.</li> <li><a href="https://github.com/eqrion/cbindgen/commit/c265a7562a5ee815057efcc8b1aca31cd3d5318d"><code>c265a75</code></a> parser: Don't panic when finding associated constants to a primitive.</li> <li><a href="https://github.com/eqrion/cbindgen/commit/17d7aad7d07dce8aa665aedbc75c39953afe1600"><code>17d7aad</code></a> Release v0.13.2</li> <li>Additional commits viewable in <a href="https://github.com/eqrion/cbindgen/compare/v0.9.1...v0.14.1">compare view</a></li> </ul> </details> <br /> [](https://dependabot.com/compatibility-score/?dependency-name=cbindgen&package-manager=cargo&previous-version=0.9.1&new-version=0.14.1) Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting `@dependabot rebase`. [//]: # (dependabot-automerge-start) [//]: # (dependabot-automerge-end) --- <details> <summary>Dependabot commands and options</summary> <br /> You can trigger Dependabot actions by commenting on this PR: - `@dependabot rebase` will rebase this PR - `@dependabot recreate` will recreate this PR, overwriting any edits that have been made to it - `@dependabot merge` will merge this PR after your CI passes on it - `@dependabot squash and merge` will squash and merge this PR after your CI passes on it - `@dependabot cancel merge` will cancel a previously requested merge and block automerging - `@dependabot reopen` will reopen this PR if it is closed - `@dependabot close` will close this PR and stop Dependabot recreating it. 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Bump cbindgen from 0.9.1 to 0.14.1 Bumps [cbindgen](https://github.com/eqrion/cbindgen) from 0.9.1 to 0.14.1. <details> <summary>Changelog</summary> <p><em>Sourced from <a href="https://github.com/eqrion/cbindgen/blob/master/CHANGES">cbindgen's changelog</a>.</em></p> <blockquote> <h2>0.14.1</h2> <pre><code> * Handle mangling pointers. ([#508](mozilla/cbindgen#508)) * Unconditionally generate a return statement in partialeq implementations. ([#509](mozilla/cbindgen#509)) </code></pre> <h2>0.14.0</h2> <pre><code> * Minor tweak at how [export.exclude] is handled to allow excluding generic instantiations in C mode. ([#501](mozilla/cbindgen#501)) * Documented cpp_compat option. ([#496](mozilla/cbindgen#496)) * Fixed a panic when parsing associated constants for a built-in type. ([#494](mozilla/cbindgen#494)) </code></pre> <h2>0.13.2</h2> <pre><code> * Constants now have suitable documentation. ([#471](mozilla/cbindgen#471)) * Fixed some C warnings by emitting void when there are no arguments. ([#470](mozilla/cbindgen#470)) * Avoids reading cargo.toml when not needed, which can cause panics in workspace situations. * Only write `default` cases if the switch is not exhaustive. ([#475](mozilla/cbindgen#475)) * Some warnings have been refined. ([#477](mozilla/cbindgen#477)) * Code generation for static arrays has been fixed. ([#479](mozilla/cbindgen#479)) * Opt-in support for constexpr in constants. ([#481](mozilla/cbindgen#481)) * Fix C code generation and some warnings when extremely large constants are used. ([#490](mozilla/cbindgen#490)) * Proper escaping of enum variants and fields. ([#483](mozilla/cbindgen#483)) * Added support for RefCell (as an opaque type) and Cell. ([#489](mozilla/cbindgen#489)) </code></pre> <h2>0.13.1</h2> <pre><code> * Support `#[cfg]` on individual enum variants. ([#469](mozilla/cbindgen#469)) </code></pre> <h2>0.13.0</h2> <pre><code> * Support 'swift_name' attributes on generated functions ([#449](mozilla/cbindgen#449)) * Add [export.pre_body] to config ([#452](mozilla/cbindgen#452)) * Handle new line in doc attribute ([#454](mozilla/cbindgen#454)) * Add support for `Self` in tagged enums, structs and unions ([#455](mozilla/cbindgen#455), [#455](mozilla/cbindgen#455), [#456](mozilla/cbindgen#456)) * Make sentinel variant respect regular config ([#459](mozilla/cbindgen#459)) * Fix layout of tagged enums with size under some configurations ([#463](mozilla/cbindgen#463)) * Add an option to allow configuring the order of function names in generated headers ([#466](mozilla/cbindgen#466)) </code></pre> <h2>0.12.2</h2> <pre><code> * Fixed version detection with lockfile v2. mozilla/cbindgen#446 * Added support for export_name on functions. mozilla/cbindgen#447 </code></pre> <h2>0.12.1</h2> <pre><code> * Added support for #[repr*64)] on enums. mozilla/cbindgen#441 * Added support to generate plain enums instead of enum classes for C++. mozilla/cbindgen#443 * Fixed dependency resolution with lockfile v2. mozilla/cbindgen#438 </code></pre> </tr></table> ... (truncated) </blockquote> </details> <details> <summary>Commits</summary> <ul> <li><a href="https://github.com/eqrion/cbindgen/commit/0761b9bbe48d01ded1bbec45bbeea5544b3b1002"><code>0761b9b</code></a> Release 0.14.1</li> <li><a href="https://github.com/eqrion/cbindgen/commit/33d9ecf11f300bd03f431e9f3417c063e681380c"><code>33d9ecf</code></a> Handle mangling pointers.</li> <li><a href="https://github.com/eqrion/cbindgen/commit/0fed9eebc47abcd31e0e69357cd39262c8a5a6cc"><code>0fed9ee</code></a> enum: Unconditionally generate a return statement in partialeq implementations.</li> <li><a href="https://github.com/eqrion/cbindgen/commit/a519f1bda444a0c6c01464296a052d9a05e1d9c4"><code>a519f1b</code></a> Actually use the temp dir for temporary compiled objects.</li> <li><a href="https://github.com/eqrion/cbindgen/commit/4a38a48937264d6ec162b2fd47ffd0e7a091ca72"><code>4a38a48</code></a> Release 0.14.0</li> <li><a href="https://github.com/eqrion/cbindgen/commit/39bae60ad7ac4711d8fccc0d098ecef98b37d559"><code>39bae60</code></a> Generate test object files in a temporary directory instead of in-tree</li> <li><a href="https://github.com/eqrion/cbindgen/commit/ec1631f3e47686e6e0c1b7641bb08b0e39c59250"><code>ec1631f</code></a> Allow excluding monomorph structs in C mode.</li> <li><a href="https://github.com/eqrion/cbindgen/commit/6fd245096dcd5c50c1065b4bd6ce62a09df0b39b"><code>6fd2450</code></a> Add missing cpp_compat documentation.</li> <li><a href="https://github.com/eqrion/cbindgen/commit/c265a7562a5ee815057efcc8b1aca31cd3d5318d"><code>c265a75</code></a> parser: Don't panic when finding associated constants to a primitive.</li> <li><a href="https://github.com/eqrion/cbindgen/commit/17d7aad7d07dce8aa665aedbc75c39953afe1600"><code>17d7aad</code></a> Release v0.13.2</li> <li>Additional commits viewable in <a href="https://github.com/eqrion/cbindgen/compare/v0.9.1...v0.14.1">compare view</a></li> </ul> </details> <br /> [](https://dependabot.com/compatibility-score/?dependency-name=cbindgen&package-manager=cargo&previous-version=0.9.1&new-version=0.14.1) Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting `@dependabot rebase`. [//]: # (dependabot-automerge-start) [//]: # (dependabot-automerge-end) --- <details> <summary>Dependabot commands and options</summary> <br /> You can trigger Dependabot actions by commenting on this PR: - `@dependabot rebase` will rebase this PR - `@dependabot recreate` will recreate this PR, overwriting any edits that have been made to it - `@dependabot merge` will merge this PR after your CI passes on it - `@dependabot squash and merge` will squash and merge this PR after your CI passes on it - `@dependabot cancel merge` will cancel a previously requested merge and block automerging - `@dependabot reopen` will reopen this PR if it is closed - `@dependabot close` will close this PR and stop Dependabot recreating it. You can achieve the same result by closing it manually - `@dependabot ignore this major version` will close this PR and stop Dependabot creating any more for this major version (unless you reopen the PR or upgrade to it yourself) - `@dependabot ignore this minor version` will close this PR and stop Dependabot creating any more for this minor version (unless you reopen the PR or upgrade to it yourself) - `@dependabot ignore this dependency` will close this PR and stop Dependabot creating any more for this dependency (unless you reopen the PR or upgrade to it yourself) - `@dependabot use these labels` will set the current labels as the default for future PRs for this repo and language - `@dependabot use these reviewers` will set the current reviewers as the default for future PRs for this repo and language - `@dependabot use these assignees` will set the current assignees as the default for future PRs for this repo and language - `@dependabot use this milestone` will set the current milestone as the default for future PRs for this repo and language - `@dependabot badge me` will comment on this PR with code to add a "Dependabot enabled" badge to your readme Additionally, you can set the following in your Dependabot [dashboard](https://app.dependabot.com): - Update frequency (including time of day and day of week) - Pull request limits (per update run and/or open at any time) - Out-of-range updates (receive only lockfile updates, if desired) - Security updates (receive only security updates, if desired) </details>
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Let me know if there's anything I should change, or any test cases which would be good to have which I might have missed.