Make generators replaceable

[bwoebi]

Required for the PHP 8.1+ OpenAI integration.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 84.61538% with 8 lines in your changes missing coverage. Please review.

Project coverage is 77.84%. Comparing base (5869a12) to head (491f51c). Report is 1 commits behind head on master.

Additional details and impacted files

[](https://app.codecov.io/gh/DataDog/dd-trace-php/pull/2718?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=DataDog) ```diff @@ Coverage Diff @@ ## master #2718 +/- ## ========================================= Coverage 77.83% 77.84% Complexity 2212 2212 ========================================= Files 227 227 Lines 26599 26646 +47 Branches 988 988 ========================================= + Hits 20703 20742 +39 - Misses 5370 5378 +8 Partials 526 526 ``` | [Flag](https://app.codecov.io/gh/DataDog/dd-trace-php/pull/2718/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=DataDog) | Coverage Δ | | |---|---|---| | [appsec-extension](https://app.codecov.io/gh/DataDog/dd-trace-php/pull/2718/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=DataDog) | `69.13% <ø> (ø)` | | | [tracer-extension](https://app.codecov.io/gh/DataDog/dd-trace-php/pull/2718/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=DataDog) | `78.60% <84.61%> (+0.01%)` | :arrow_up: | | [tracer-php](https://app.codecov.io/gh/DataDog/dd-trace-php/pull/2718/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=DataDog) | `80.52% <ø> (ø)` | | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=DataDog#carryforward-flags-in-the-pull-request-comment) to find out more. | [Files](https://app.codecov.io/gh/DataDog/dd-trace-php/pull/2718?dropdown=coverage&src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=DataDog) | Coverage Δ | | |---|---|---| | [ext/hook/uhook.c](https://app.codecov.io/gh/DataDog/dd-trace-php/pull/2718?src=pr&el=tree&filepath=ext%2Fhook%2Fuhook.c&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=DataDog#diff-ZXh0L2hvb2svdWhvb2suYw==) | `84.70% <100.00%> (+0.11%)` | :arrow_up: | | [...\_abstract\_interface/interceptor/php8/interceptor.c](https://app.codecov.io/gh/DataDog/dd-trace-php/pull/2718?src=pr&el=tree&filepath=zend_abstract_interface%2Finterceptor%2Fphp8%2Finterceptor.c&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=DataDog#diff-emVuZF9hYnN0cmFjdF9pbnRlcmZhY2UvaW50ZXJjZXB0b3IvcGhwOC9pbnRlcmNlcHRvci5j) | `77.77% <83.33%> (+0.40%)` | :arrow_up: | ------ [Continue to review full report in Codecov by Sentry](https://app.codecov.io/gh/DataDog/dd-trace-php/pull/2718?dropdown=coverage&src=pr&el=continue&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=DataDog). > **Legend** - [Click here to learn more](https://docs.codecov.io/docs/codecov-delta?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=DataDog) > `Δ = absolute (impact)`, `ø = not affected`, `? = missing data` > Powered by [Codecov](https://app.codecov.io/gh/DataDog/dd-trace-php/pull/2718?dropdown=coverage&src=pr&el=footer&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=DataDog). Last update [5869a12...491f51c](https://app.codecov.io/gh/DataDog/dd-trace-php/pull/2718?dropdown=coverage&src=pr&el=lastupdated&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=DataDog). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=DataDog).

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Benchmarks

Benchmark execution time: 2024-06-17 17:11:28

Comparing candidate commit 491f51cf75261825e531527e3be3abd0e5f7544a in PR branch bob/support-replace-generator with baseline commit 5869a12307680b55cc32077a5641c1bf4789df72 in branch master.

Found 5 performance improvements and 0 performance regressions! Performance is the same for 173 metrics, 0 unstable metrics.

scenario:PDOBench/benchPDOBaseline

• 🟩 execution_time [-18.089µs; -17.214µs] or [-9.389%; -8.934%]

scenario:PDOBench/benchPDOBaseline-opcache

• 🟩 execution_time [-17.147µs; -12.453µs] or [-9.012%; -6.544%]

scenario:PDOBench/benchPDOOverhead

• 🟩 execution_time [-18.293µs; -13.602µs] or [-6.265%; -4.659%]

scenario:PDOBench/benchPDOOverhead-opcache

• 🟩 execution_time [-18.100µs; -11.281µs] or [-6.092%; -3.797%]

scenario:PDOBench/benchPDOOverheadWithDBM

• 🟩 execution_time [-18.028µs; -12.135µs] or [-5.731%; -3.858%]