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zqxwceandClaude Opus 4.7
1aab0d6e25
Replace the two giant hardcoded selectors (the 27-arg AVCapturePhoto
init and the 32-arg +resolvedSettingsWithUniqueID:… factory) with a
prefix-lookup + label-driven NSInvocation builder. This survives
Apple adding or removing args between iOS releases without code
changes: the discovered selector decides arg count and order, the
resolver block fills the args we care about by label
("timestamp", "photoSurface", "uniqueID", "photoDimensions", etc.),
and unknown labels get nil/zero from the runtime type encoding.
cfx_find_selector_by_prefix(cls, prefix, classMethod)
Walks class_copyMethodList on cls (or its metaclass for class
methods), returns the matching selector with the most colons.
Highest-arg-count match wins so a future Apple revision that
adds a new arg in the middle is still found.
cfx_normalize_first_label(NSString *)
Strips "initWith" / "resolvedSettingsWith" and lowercases the
first char of the remainder so the leading component matches
the same label convention as the rest of the selector.
cfx_invoke_with_labeled_args(target, selector, resolver)
Builds the NSInvocation, iterates selector components, calls
the resolver block once per arg with (label, typeEnc, outBuf).
Block writes the value via the appropriate cast (CMTime,
IOSurfaceRef, __unsafe_unretained id, NSInteger, etc.) or
leaves outBuf zeroed.
Builders refactored:
- cfx_build_resolved_settings now fills only uniqueID +
photoDimensions + previewDimensions; everything else stays
zero/nil (Apple's impl tolerates that on builds where the
factory itself works at all).
- cfx_build_avcapturephoto_with_request fills timestamp,
photoSurface, photoSurfaceSize, processedFileType, metadata,
captureRequest, sequenceCount, photoCount, sourceDeviceType.
Every other surface/dictionary arg defaults to nil.
End state: net +169/-96 lines, zero hardcoded full selectors,
photo synthesis remains functionally identical on 26.5 and is
prepared for arg-list drift on future iOS revisions.
Co-Authored-By: Claude Opus 4.7 <[email protected]>