7e208c46ce
We convert NSNumbers (and NSStrings) to the appropriate mbgl value so that we can use NSPredicates to describe mbgl filters we want to apply to style layers at runtime. This change fixes an issue where the conversion from an NSNumber that represented a bool was not recognized as such. encode(bool) returns a 'c' or 'b' on 32 bit and 64 bit systems respectively and objCType of an NSNumber representing a bool always returns 'c'. Now the implementation checks for 'c' always and NSNumbers representing bool don't fall through and trigger the exception.
Darwin
The code in the Darwin platform targets Apple platforms but is not specific to iOS or macOS. This code is not distributed as an SDK in itself, but is required by the Mapbox iOS SDK and Mapbox macOS SDK.
These files depend on the Foundation and Core Foundation frameworks but do not depend on iOS- or macOS–specific frameworks, such as UIKit or AppKit. Any non-cross-platform code is guarded by TargetConditionals.h macros.