GTReflogEntry nullability

Author: Ben Chatelain

ObjectiveGit/GTReflogEntry+Private.h

@@ -9,6 +9,8 @@
 #import "GTReflogEntry.h"
 #import "git2/types.h"
 
+NS_ASSUME_NONNULL_BEGIN
+
 @interface GTReflogEntry ()
 
 /// Initializes the receiver with the underlying reflog entry. Designated initializer.
@@ -17,6 +19,8 @@
 /// reflog - The reflog in which the entry resides. Cannot be nil.
 ///
 /// Returns the initialized object.
-- (id)initWithGitReflogEntry:(const git_reflog_entry *)entry reflog:(GTReflog *)reflog NS_DESIGNATED_INITIALIZER;
+- (nullable instancetype)initWithGitReflogEntry:(const git_reflog_entry *)entry reflog:(GTReflog *)reflog NS_DESIGNATED_INITIALIZER;
 
 @end
+
+NS_ASSUME_NONNULL_END

ObjectiveGit/GTReflogEntry.h

@@ -15,15 +15,15 @@
 @interface GTReflogEntry : NSObject
 
 /// The OID of the ref before the entry.
-@property (nonatomic, readonly, strong) GTOID *previousOID;
+@property (nonatomic, readonly, strong, nullable) GTOID *previousOID;
 
 /// The OID of the ref when the entry was made.
-@property (nonatomic, readonly, strong) GTOID *updatedOID;
+@property (nonatomic, readonly, strong, nullable) GTOID *updatedOID;
 
 /// The person who committed the entry.
-@property (nonatomic, readonly, strong) GTSignature *committer;
+@property (nonatomic, readonly, strong, nullable) GTSignature *committer;
 
 /// The message associated with the entry.
-@property (nonatomic, readonly, copy) NSString *message;
+@property (nonatomic, readonly, copy, nullable) NSString *message;
 
 @end

ObjectiveGit/GTReflogEntry.m

@@ -27,7 +27,7 @@ @implementation GTReflogEntry
 
 #pragma mark Lifecycle
 
-- (id)initWithGitReflogEntry:(const git_reflog_entry *)entry reflog:(GTReflog *)reflog {
+- (instancetype)initWithGitReflogEntry:(const git_reflog_entry *)entry reflog:(GTReflog *)reflog {
 	NSParameterAssert(entry != NULL);
 	NSParameterAssert(reflog != nil);