Port Scalar::Util::Numeric XS module

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評価

難易度
5/5
見積もり時間
1週間以上
初心者へのやさしさ
35/100
issue の種類
機能追加
明瞭さ
明確に書かれている
活発さ
活発
技術スタック
java, perl
領域
backend, testing

調査の方向性

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.

索引モデルが issue の本文から書いたものです。

説明

area:cpan-port bug

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::Numeric and 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 isint returning -1, 1, or 0 and 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-Object 0.116 upstream suite on both PerlOnJava backends.
主要言語
Perl
スター
65
フォーク
8
平均マージ
5時間 45分
マージ済み PR(30日)
184

環境構築

はじめの一歩

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  3. リポジトリをフォークし、ブランチを切って変更します。
  4. issue 番号を参照したプルリクエストを送ります。

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