Port Scalar::Util::Numeric XS module
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评估
调研方向
Start by reading the PerlOnJava XS loading path and the upstream Scalar::Util::Numeric 0.40 wrapper and XS implementation; the issue does not name project files or tests. Compare each exported predicate's behavior with system Perl, then add project-owned API regression coverage and run the Data-TableData-Object 0.116 suite on both backends. Done means the module loads without native XS and matches the stated classification and return conventions.
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描述
Summary
Add PerlOnJava support for Scalar::Util::Numeric 0.40. This CPAN module currently fails to load because it is implemented in XS and PerlOnJava has no Java XS implementation for it.
Evidence
In CPAN random tester run 20261103-123832-91742, distribution Data-TableData-Object 0.116 passed its complete upstream suite under system Perl 5.42.2 (8 files, 102 tests). Under PerlOnJava, 5 of 8 test programs failed: the compile checks and the aoaos, aohos, aos, and hash tests. All failures stem from loading Scalar::Util::Numeric: Can't load loadable object ... no Java XS implementation available.
The MetaCPAN reverse dependency page reports 56 released dependent distributions, including 17 released on or after 2023-11-04 (the three-year recency window used by the project’s CPAN port-priority report). Recent examples include App-CSVUtils, Tk-AppWindow, App-pause, Bio-Gonzales, and Data-TableData-Object.
References:
Porting scope
The 0.40 Perl wrapper loads XS directly. The XS implementation calls Perl's grok_number and exposes numeric classification through isnum, isint, isuv, isbig, isfloat, isneg, isinf, and isnan. The module also contains Windows-specific recognition for 1.#INF, -1.#INF, and 1.#IND spellings. Provide compatible behavior on PerlOnJava, either through a pure-Perl-compatible provider or a Java implementation, without requiring native XS loading.
Acceptance criteria
use Scalar::Util::Numericand all exported functions work on the JVM and interpreter backends without an XS load failure.- Classification results match the upstream module/system Perl for ordinary numbers, integer and UV boundaries, large values, decimal/exponent forms, signs, infinities, NaN, undefined values, and stringified or overloaded values where supported by the module.
- Preserve the documented return conventions, including
isintreturning-1,1, or0and the boolean return values of the other predicates. - Add project-owned regression coverage for the public API and validate expected behavior against system Perl.
- Re-run the
Data-TableData-Object0.116 upstream suite on both PerlOnJava backends.
- 主要语言
- Perl
- 星标
- 65
- 派生
- 8
- 平均合并
- 5 小时 45 分钟
- 30 天内合并 PR
- 184
环境准备
- 提供 Dockerfile 或 Docker Compose 文件
- 没有 Pull Request 模板
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