Andreas Kling d8921646f5 LibJS+LibWeb: Parse classic scripts off the main thread ...

Create a SourceCode on the main thread (performing UTF-8 to UTF-16
conversion), then submit parse_program() to the ThreadPool for
Rust parsing on a worker thread. This unblocks the WebContent event
loop during external script loading.

Add Script::create_from_parsed() and
ClassicScript::create_from_pre_parsed() factory methods that take a
pre-parsed RustParsedProgram and a SourceCode, performing only the
GC-allocating compile step on the main thread.

Falls back to synchronous parsing when the Rust pipeline is
unavailable (LIBJS_CPP=1 or LIBJS_COMPARE_PIPELINES=1).

2026-03-06 13:06:05 +01:00

8.0 KiB

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