Add ObjC helpers for Any WKT.

- Capture the ObjC prefix used when generating the the file.
- Track the containing type on descriptors.
- Mark descriptors where the message class name got a suffix added to it.
- Expose a fullName property on Descriptors.
- Add helpers for packing/unpacking Any messages.
- Bump the ObjC runtime version number. Since we added methods and invoke them
  in the generated code, ensure the code is running against a matching version.
  Otherwise, someone could compile against headers, but run with a framework
  that is older and get unknown selector failures.  This should trip clearer
  messaging.

Fixes https://github.com/google/protobuf/issues/1674

1 files changed, 4 insertions, 0 deletions

diff --git a/src/google/protobuf/compiler/objectivec/objectivec_helpers.h b/src/google/protobuf/compiler/objectivec/objectivec_helpers.h
index b05983df..022b7a1b 100644
--- a/src/google/protobuf/compiler/objectivec/objectivec_helpers.h
+++ b/src/google/protobuf/compiler/objectivec/objectivec_helpers.h
@@ -67,6 +67,9 @@ bool IsRetainedName(const string& name);
 // handling under ARC.
 bool IsInitName(const string& name);
 
+// Gets the objc_class_prefix.
+string FileClassPrefix(const FileDescriptor* file);
+
 // Gets the path of the file we're going to generate (sans the .pb.h
 // extension).  The path will be dependent on the objectivec package
 // declared in the proto package.
@@ -83,6 +86,7 @@ string FileClassName(const FileDescriptor* file);
 // These return the fully-qualified class name corresponding to the given
 // descriptor.
 string ClassName(const Descriptor* descriptor);
+string ClassName(const Descriptor* descriptor, string* out_suffix_added);
 string EnumName(const EnumDescriptor* descriptor);
 
 // Returns the fully-qualified name of the enum value corresponding to the