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Commit d9766ddc3d525cf08acec4c3483e61d86c9899a8 (Qt 5.12) replaced the
use of the old binary JSON format with CBOR, which is more compact and
standard, but requires actual parsing instead of just a quick size
verification. For regular, loaded plugins, the metadata is stored in
parsed QCborValue format, but for static plugins, we were re-parsing
each staticplugin's metadata for every single call.
This avoids a full parsing and only parses the CBOR header to find the
IIDs (moc always outputs the IID first).
Fixes: QTBUG-114253
Pick-to: 6.6
Change-Id: I8bd6bb457b9c42218247fffd179750ec6c9e3252
Reviewed-by: Eirik Aavitsland <eirik.aavitsland@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
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