Playgrounds want to be able to represent numbers different from strings, so provide different tags for types that represent numbers distinct from strings. Set up the Int and Double mirrors to return quick look objects of the appropriate cases, and hook up the magic ObjC mirror to do the same for NSNumbers. <rdar://problem/16360758>
Swift SVN r15219
Only the bits that actually need to grovel metadata really need to be written in C++, so define away hopefully most of the potential for memory safety or corruption bugs from screwing up calling convention matchups by moving most of the magic mirror implementations into pure Swift.
Swift SVN r15180
We want the metadata of the ObjC class, not the opaque Builtin.ObjCPointer metadata. This allows the Any to actually be downcast to an expected type on the client side.
Swift SVN r15009
Add 'Sound', 'Color', and 'BezierPath', as requested by Enrico, as well as a '_Raw' case that can be used for internal experimentation.
Swift SVN r14978
Implicit conversions to and from an unsigned long long enum class give us the calling convention we want for swift_allocBox without totally destroying the API for C callers.
Swift SVN r14919
Playgrounds want to present aggregate-like values with fixed children, such as structs and classes, differently from container-like values with variable amounts of children, like arrays and dictionaries, so add a property to Mirror that describes the disposition of the value being reflected.
Swift SVN r14827
In response to feedback from the Xcode team, change the 'IDERepresentable' type from a protocol into an enum with a limited set of tags, starting with 'Text' and 'Image' for now. In the ObjC mirror, if the ObjC object has a -debugQuickLookObject method, use it to get an object we can try to map to the enum.
Swift SVN r14632
For ObjC classes, use class_copyIvarList to walk the ivars, and produce the summary string using -debugDescription. Still to come:
- visiting the base class as a child, and
- calling -debugQuickLookObject to get the quicklook object. Still waiting on a final design for the IDERepresentation API.
Swift SVN r14626
A useful unsafe optimization for potential implementations of Mirror that have existing heap storage to share from the value, like for Array or Dictionary.
Swift SVN r14186
Define a "Mirror" protocol with methods for querying the number of children a structured value has, getting the name and mirror for each of those children, and a string and "IDE representation" of the value, as needed by playgrounds and by our planned generic printing facility.
In the runtime, define a "reflect" function that can provide a Mirror for any object, either using a "Reflectable" protocol conformance if available, or falling back to a magic implementation in the runtime that grovels the type metadata. Stub out a bare minimum default implementation.
Swift SVN r14139
