Igor Stepanov has finished his runtime reflection patch,
announced here a while ago. [1]
DMD patch against commit c50eb5f (from December 31):
http://j.mp/xdI0hb
Druntime Github fork: https://github.com/IgorStepanov/druntime
User classes can declare a getMembers method, which becomes
available in the classinfo. The patch adds implicit generation of
getMembers information for all classes and structures, which do
not declare the method explicitly.
Usage is simple: YourClass.classinfo.getMembers("field") returns
a list of fields with that name (MemberInfo array). Use null to
get all fields. This also works for modules and enumerations.
The patch also adds linkage and argument information to function
TypeInfo.
An example of what would be possible with this patch: call
arbitrary methods by name and a Variant array as parameters, and
obtaining the result as a Variant.
Igor has asked about the potential of this patch to be included
into DMD. I imagine that the consensus would be that it should at
least be enabled (or disabled) with a compiler switch, or
attribute in the source code.
[1]: http://j.mp/wZLCDb
