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C++: Updated constructor generation and allocator handling for unions#383

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thirtytwobits merged 2 commits intoOpenCyphal:3.0.previewfrom
JLReitz:unionant-allocator-propogation
Aug 4, 2025
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C++: Updated constructor generation and allocator handling for unions#383
thirtytwobits merged 2 commits intoOpenCyphal:3.0.previewfrom
JLReitz:unionant-allocator-propogation

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@JLReitz JLReitz commented Jul 10, 2025

  • Allocators are stored and propagated to union composite type alternative values during construction and emplacement
  • in_place_index constructor is generated for union composite types
  • DependencyBuilder sets uses_union flag appropriately

@JLReitz JLReitz force-pushed the unionant-allocator-propogation branch 2 times, most recently from 448aaf9 to aa2849f Compare July 11, 2025 19:42
@JLReitz JLReitz marked this pull request as ready for review July 11, 2025 19:56
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JLReitz commented Jul 11, 2025

How can we enable pmr-flavored language checks for this PR?

@JLReitz JLReitz mentioned this pull request Jul 11, 2025
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thirtytwobits commented Jul 14, 2025

How can we enable pmr-flavored language checks for this PR?

In .github/workflows see the test.yml. Look for the language-verification-c-cpp: section and then strategy/matrix/language under that section. Add the appropriate PMR overrides to this array and the CI will run.

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JLReitz commented Jul 14, 2025
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JLReitz commented Jul 14, 2025
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src/nunavut/lang/cpp/templates/_composite_type.j2

{%- if composite_type.inner_type is not UnionType %}
{% if composite_type.fields_except_padding %}
// Initializing constructor
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At the moment tagged in_place_index constructors are only defined when the language options have constructor_convention != default, FYI

@JLReitz JLReitz force-pushed the unionant-allocator-propogation branch from aa2849f to 318a314 Compare July 15, 2025 02:46
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JLReitz commented Jul 15, 2025 •
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Interesting failure that popped up all of a sudden during the lint test.

lint: commands[3]> mypy -p nunavut --cache-dir /__w/nunavut/nunavut/.tox/lint/tmp --txt-report /__w/nunavut/nunavut/.tox/lint/tmp/mypy-report-lib --config-file /__w/nunavut/nunavut/tox.ini
src/nunavut/cli/__init__.py: note: In function "_make_parser":
src/nunavut/cli/__init__.py:916: error: Redundant cast to "ParserT"  [redundant-cast]

Could it be from me updating .github/workflows/test.py? Looks like I'm not out of sync with the 3.0.preview branch. I ran the full tox suite within an up to date python development container and could not reproduce.

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thirtytwobits commented Jul 15, 2025

Interesting failure that popped up all of a sudden during the lint test.

lint: commands[3]> mypy -p nunavut --cache-dir /__w/nunavut/nunavut/.tox/lint/tmp --txt-report /__w/nunavut/nunavut/.tox/lint/tmp/mypy-report-lib --config-file /__w/nunavut/nunavut/tox.ini
src/nunavut/cli/__init__.py: note: In function "_make_parser":
src/nunavut/cli/__init__.py:916: error: Redundant cast to "ParserT"  [redundant-cast]

Could it be from me updating .github/workflows/test.py? Looks like I'm not out of sync with the 3.0.preview branch. I ran the full tox suite within an up to date python development container and could not reproduce.

.github/workflows/test.py doesn't exist anymore. Looks like this is something from a change upstream. Try changing line 916 of src/nunavut/cli/init.py to be just return parser

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JLReitz commented Jul 16, 2025 •
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.github/workflows/test.py doesn't exist anymore.

My mistake, I had meant .github/workflows/test.yml

@JLReitz JLReitz force-pushed the unionant-allocator-propogation branch from 318a314 to 4428bd5 Compare July 16, 2025 20:29
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JLReitz commented Jul 30, 2025 •
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Bugfix for CETL VariableLengthArray required to resolve failing checks: OpenCyphal/CETL#188

@emrainey emrainey requested a review from thirtytwobits July 31, 2025 17:06
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JLReitz commented Jul 31, 2025

Waiting for the release of CETL v.1.4.2 to push submodule update

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thirtytwobits commented Aug 1, 2025

Waiting for the release of CETL v.1.4.2 to push submodule update

https://github.com/OpenCyphal/CETL/releases/tag/v1.4.2

JLReitz added 2 commits August 1, 2025 17:28
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C++: Updated constructor generation and allocator handling for unions
442f457 
 - Allocators are stored and propagated to union composite type alternative values during construction and emplacement
 - `in_place_index` constructor is generated for union composite types
 - `DependencyBuilder` sets `uses_union` flag appropriately
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Checking out CETL v1.4.2
2f193f3
@JLReitz JLReitz force-pushed the unionant-allocator-propogation branch from 4428bd5 to 2f193f3 Compare August 1, 2025 17:29
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sonarqubecloud bot commented Aug 1, 2025

Quality Gate Passed Quality Gate passed

Issues
1 New issue
0 Accepted issues

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100.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

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thirtytwobits commented Aug 4, 2025

Strong work. Thank you for your contribution citizen. 🇺🇸🏈🥧

@thirtytwobits thirtytwobits merged commit 426fe05 into OpenCyphal:3.0.preview Aug 4, 2025
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