43 lines
2.3 KiB
Markdown
43 lines
2.3 KiB
Markdown
# Engine assets
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Regex Tools executes ECMAScript through the browser's native `RegExp` engine.
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It also ships ten declared, self-hosted runtime packs:
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- `pcre2/`: official standalone PCRE2 10.47, 8-bit WebAssembly;
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- `php/`: PHP 8.5.8 `preg_*` through `@php-wasm/web-8-5` 3.1.46; this runtime
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reports PCRE2 10.44;
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- `perl/`: Perl 5.28.1 through the legacy WebPerl 0.09-beta prebuilt runtime;
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- `python/`: Pyodide 314.0.3 with CPython 3.14.2 `re`, a complete linked
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base-runtime inventory (including vendored loader ports),
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preferred-form/patch manifest and independently pinned legal closure;
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- `ruby/`: minimal ruby.wasm 2.9.3-2.9.4 with CRuby 4.0.0 `Regexp`;
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- `java/`: TeaVM 0.15.0's `java.util.regex` class library compiled to an
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ES2015 module; this module is not OpenJDK;
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- `cpp/`: Emscripten 6.0.4 libc++ `std::wregex`, with an exact traced native
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component/source/legal manifest;
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- `go/`: Go 1.26.5 standard-library `regexp` for `js/wasm`;
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- `rust/`: Rust `regex` crate 1.13.1 for `wasm32-unknown-unknown`; and
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- `dotnet/`: .NET 10.0.10 `System.Text.RegularExpressions` for browser
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WebAssembly.
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The selectable Scala/JVM compatibility profile intentionally shares
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`java/`. It does not contain or claim a Scala runtime.
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The packs come from pinned, documented open-source inputs. Runtime files travel
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with deterministic metadata, closed-set checksums and the applicable upstream
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licence/notice material, all of which are verified by the release gate.
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The Python pack's `SOURCE-MANIFEST.json` records exact source archives or Git
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trees, both vendored stack-parser source ports, all Pyodide
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CPython/Emscripten patches and the evidence for every component already linked
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into its loader or base WebAssembly module. The C++ source manifest similarly
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binds its exact module to the traced Emscripten runtime, musl, emmalloc,
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compiler-rt, libc++ and libc++abi inputs and the explicit non-selection of
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libunwind. The
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hundreds of optional entries in `pyodide-lock.json` are a package catalogue;
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their wheels are not part of this pack.
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The Perl pack remains an explicit exception in age, not in identity: its
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upstream beta assets are retained byte-for-byte and labelled legacy everywhere.
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Its loader contains a dormant optional JavaScript-interoperability `eval` site;
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the fixed bridge does not import or call it.
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