Beta quality drop of Objective C Support.

- Add more to the ObjC dir readme.
- Merge the ExtensionField and ExtensionDescriptor to reduce overhead.
- Fix an initialization race.
- Clean up the Xcode schemes.
- Remove the class/enum filter.
- Remove some forced inline that were bloating things without proof of performance wins.
- Rename some internal types to avoid conflicts with the well know types protos.
- Drop the use of ApplyFunctions to the compiler/optimizer can do what it wants.
- Better document some possible future improvements.
- Add missing support for parsing repeated primitive fields in packed or unpacked forms.
- Improve -hash.
- Add *Count for repeated and map<> fields to avoid auto create when checking for them being set.

1 files changed, 8 insertions, 6 deletions

diff --git a/objectivec/GPBDescriptor.h b/objectivec/GPBDescriptor.h
index 97b46b3c..aeac9029 100644
--- a/objectivec/GPBDescriptor.h
+++ b/objectivec/GPBDescriptor.h
@@ -30,7 +30,7 @@
 
 #import <Foundation/Foundation.h>
 
-#import "GPBTypes.h"
+#import "GPBRuntimeTypes.h"
 
 @class GPBEnumDescriptor;
 @class GPBFieldDescriptor;
@@ -89,14 +89,14 @@ typedef NS_ENUM(NSInteger, GPBFieldType) {
 
 @property(nonatomic, readonly, copy) NSString *name;
 @property(nonatomic, readonly) uint32_t number;
-@property(nonatomic, readonly) GPBType type;
+@property(nonatomic, readonly) GPBDataType dataType;
 @property(nonatomic, readonly) BOOL hasDefaultValue;
-@property(nonatomic, readonly) GPBValue defaultValue;
+@property(nonatomic, readonly) GPBGenericValue defaultValue;
 @property(nonatomic, readonly, getter=isRequired) BOOL required;
 @property(nonatomic, readonly, getter=isOptional) BOOL optional;
 @property(nonatomic, readonly) GPBFieldType fieldType;
 // If it is a map, the value type is in -type.
-@property(nonatomic, readonly) GPBType mapKeyType;
+@property(nonatomic, readonly) GPBDataType mapKeyDataType;
 @property(nonatomic, readonly, getter=isPackable) BOOL packable;
 
 @property(nonatomic, readonly, assign) GPBOneofDescriptor *containingOneof;
@@ -129,12 +129,14 @@ typedef NS_ENUM(NSInteger, GPBFieldType) {
 
 @end
 
-@interface GPBExtensionDescriptor : NSObject
+@interface GPBExtensionDescriptor : NSObject<NSCopying>
 @property(nonatomic, readonly) uint32_t fieldNumber;
-@property(nonatomic, readonly) GPBType type;
+@property(nonatomic, readonly) Class containingMessageClass;
+@property(nonatomic, readonly) GPBDataType dataType;
 @property(nonatomic, readonly, getter=isRepeated) BOOL repeated;
 @property(nonatomic, readonly, getter=isPackable) BOOL packable;
 @property(nonatomic, readonly, assign) Class msgClass;
 @property(nonatomic, readonly) NSString *singletonName;
 @property(nonatomic, readonly, strong) GPBEnumDescriptor *enumDescriptor;
+@property(nonatomic, readonly) id defaultValue;
 @end