Hi Everyone, I've just finished porting Remy Demarest's implementation of the blocks runtime to the GNU runtime. This is a new language feature introduced by Apple in Snow Leopard, allowing things like Smalltalk blocks in Objective-C. You can find a full description of the feature here:
http://clang.llvm.org/docs/BlockLanguageSpec.txt The syntax is ugly (and, since I know Steve Naroff has read the paper where Brad Cox proposed much less-ugly syntax, Apple doesn't really have an excuse for this) but the semantics are almost nice (__block should be the default, but unfortunately C++ programmers were involved in the design). To play with this, you need a relatively recent build of clang. Compile with -fblocks and link against the ObjectiveC2 framework from svn and blocks should Just Workâ˘. In future, I will extend this object to have the same interface as Smalltalk blocks, so we can use closures from Smalltalk or Objective-C interchangeably. Note that, unlike Smalltalk blocks, these have no introspection, no reflection, and no self pointer, and so are less flexible. David _______________________________________________ Etoile-dev mailing list Etoile-dev@gna.org https://mail.gna.org/listinfo/etoile-dev
