Commit Graph

10 Commits

Author SHA1 Message Date
Steve Naroff 7cae42b07a This patch includes a conceptually simple, but very intrusive/pervasive change.
The idea is to segregate Objective-C "object" pointers from general C pointers (utilizing the recently added ObjCObjectPointerType). The fun starts in Sema::GetTypeForDeclarator(), where "SomeInterface *" is now represented by a single AST node (rather than a PointerType whose Pointee is an ObjCInterfaceType). Since a significant amount of code assumed ObjC object pointers where based on C pointers/structs, this patch is very tedious. It should also explain why it is hard to accomplish this in smaller, self-contained patches.

This patch does most of the "heavy lifting" related to moving from PointerType->ObjCObjectPointerType. It doesn't include all potential "cleanups". The good news is additional cleanups can be done later (some are noted in the code). This patch is so large that I didn't want to include any changes that are purely aesthetic.

By making the ObjC types truly built-in, they are much easier to work with (and require fewer "hacks"). For example, there is no need for ASTContext::isObjCIdStructType() or ASTContext::isObjCClassStructType()! We believe this change (and the follow-up cleanups) will pay dividends over time. 

Given the amount of code change, I do expect some fallout from this change (though it does pass all of the clang tests). If you notice any problems, please let us know asap! Thanks.

llvm-svn: 75314
2009-07-10 23:34:53 +00:00
Daniel Dunbar a45cf5b6b0 Rename clang to clang-cc.
Tests and drivers updated, still need to shuffle dirs.

llvm-svn: 67602
2009-03-24 02:24:46 +00:00
Douglas Gregor 79a6b01802 Support conversion from a null pointer constant o any Objective-C object pointer type. Fixes rdar://problem/6463298
llvm-svn: 61340
2008-12-22 20:51:52 +00:00
Douglas Gregor 6ab9978b66 Add a missing @end. Why didn't this get diagnosed?
llvm-svn: 61256
2008-12-19 19:16:37 +00:00
Douglas Gregor a119f10482 Support more implicit conversions for Objective-C types. Addresses <rdar://problem/6458293>.
llvm-svn: 61255
2008-12-19 19:13:09 +00:00
Douglas Gregor 47d3f2742a Allow downcasts of pointers to Objective-C interfaces, with a
warning. This matches GCC's behavior and addresses
<rdar://problem/6458293>.

llvm-svn: 61246
2008-12-19 17:40:08 +00:00
Douglas Gregor 1e57a3fb46 Add some more implicit conversions for Objective-C++
llvm-svn: 61229
2008-12-18 23:43:31 +00:00
Douglas Gregor 55ad91fecb Ultrasimplistic sketch for the parsing of C++ template-ids. This won't
become useful or correct until we (1) parse template arguments
correctly, (2) have some way to turn template-ids into types,
declarators, etc., and (3) have a real representation of templates.

llvm-svn: 61208
2008-12-18 19:37:40 +00:00
Douglas Gregor a29dc05eaf Add implicit conversions for Objective-C qualified ids, e.g.,
id<P0>

The intended overloading behavior of these entities isn't entirely
clear, and GCC seems to have some strange limitations (e.g., the
inability to overload on id<P0> vs. id<P1>). We'll want to revisit
these semantics and determine just how Objective-C++ overloading
should really work.

llvm-svn: 60142
2008-11-27 01:19:21 +00:00
Douglas Gregor 237f96c40f Implement implicit conversions for Objective-C specific types, e.g.,
converting a pointer to one Objective-C interface into a pointer to another
Objective-C interface, and conversions with 'id'. The semantics seems
to match GCC, although they seem somewhat ad hoc.

Fixed a few cases where we assumed the C++ definition of isObjectType,
but were getting the C definition, causing failures in trouble with
conversions to void pointers.

llvm-svn: 60130
2008-11-26 23:31:11 +00:00