Add nullability annotations

8 files changed, 35 insertions, 20 deletions

diff --git a/src/objc/nntp/MCONNTPFetchAllArticlesOperation.h b/src/objc/nntp/MCONNTPFetchAllArticlesOperation.h
index 34ccee7e..022ce059 100644
--- a/src/objc/nntp/MCONNTPFetchAllArticlesOperation.h
+++ b/src/objc/nntp/MCONNTPFetchAllArticlesOperation.h
@@ -15,6 +15,7 @@
 
 @class MCOIndexSet;
 
+NS_ASSUME_NONNULL_BEGIN
 /** This is an asynchronous operation that will fetch the list of a messages on the NNTP server. */
 @interface MCONNTPFetchAllArticlesOperation : MCONNTPOperation
 
@@ -26,10 +27,11 @@
  - On success `error` will be nil and `articles` will be an index set of article numbers.
  
  - On failure, `error` will be set with `MCOErrorDomain` as domain and an 
- error code available in MCOConstants.h, `messages` will be null
+ error code available in MCOConstants.h, `articles` will be null
  */
-- (void) start:(void (^)(NSError * error, MCOIndexSet * articles))completionBlock;
+- (void) start:(void (^)(NSError * __nullable error, MCOIndexSet * __nullable articles))completionBlock;
 
 @end
+NS_ASSUME_NONNULL_END
 
 #endif
diff --git a/src/objc/nntp/MCONNTPFetchArticleOperation.h b/src/objc/nntp/MCONNTPFetchArticleOperation.h
index b8bffcb0..170f594b 100644
--- a/src/objc/nntp/MCONNTPFetchArticleOperation.h
+++ b/src/objc/nntp/MCONNTPFetchArticleOperation.h
@@ -17,6 +17,7 @@
 
 typedef void (^MCONNTPOperationProgressBlock)(unsigned int current, unsigned int maximum);
 
+NS_ASSUME_NONNULL_BEGIN
 @interface MCONNTPFetchArticleOperation : MCONNTPOperation
 
 /** This block will be called as data is downloaded from the network */
@@ -32,8 +33,9 @@ typedef void (^MCONNTPOperationProgressBlock)(unsigned int current, unsigned int
  - On failure, `error` will be set with `MCOErrorDomain` as domain and an 
  error code available in MCOConstants.h, `data` will be nil
  */
-- (void) start:(void (^)(NSError * error, NSData * messageData))completionBlock;
+- (void) start:(void (^)(NSError * __nullable error, NSData * __nullable messageData))completionBlock;
 
 @end
+NS_ASSUME_NONNULL_END
 
 #endif
diff --git a/src/objc/nntp/MCONNTPFetchHeaderOperation.h b/src/objc/nntp/MCONNTPFetchHeaderOperation.h
index 63ce7677..d23c278c 100644
--- a/src/objc/nntp/MCONNTPFetchHeaderOperation.h
+++ b/src/objc/nntp/MCONNTPFetchHeaderOperation.h
@@ -20,6 +20,7 @@
 
 @class MCOMessageHeader;
 
+NS_ASSUME_NONNULL_BEGIN
 @interface MCONNTPFetchHeaderOperation : MCONNTPOperation
 
 /** 
@@ -30,10 +31,11 @@
  - On success `error` will be nil and `header` will contain the message header
  
  - On failure, `error` will be set with `MCOErrorDomain` as domain and an 
- error code available in MCOConstants.h, `header` will be null
+ error code available in MCOConstants.h, `header` will be nil
  */
-- (void) start:(void (^)(NSError * error, MCOMessageHeader * header))completionBlock;
+- (void) start:(void (^)(NSError * __nullable error, MCOMessageHeader * __nullable header))completionBlock;
 
 @end
+NS_ASSUME_NONNULL_END
 
 #endif
diff --git a/src/objc/nntp/MCONNTPFetchOverviewOperation.h b/src/objc/nntp/MCONNTPFetchOverviewOperation.h
index d63668e8..93a0b31f 100644
--- a/src/objc/nntp/MCONNTPFetchOverviewOperation.h
+++ b/src/objc/nntp/MCONNTPFetchOverviewOperation.h
@@ -13,6 +13,8 @@
 #import <Foundation/Foundation.h>
 #import <MailCore/MCONNTPOperation.h>
 
+
+NS_ASSUME_NONNULL_BEGIN
 @interface MCONNTPFetchOverviewOperation : MCONNTPOperation
 
 /** 
@@ -25,8 +27,9 @@
  - On failure, `error` will be set with `MCOErrorDomain` as domain and an 
  error code available in MCOConstants.h, `messages` will be null
  */
-- (void) start:(void (^)(NSError * error, NSArray * /* MCOMessageHeader */ messages))completionBlock;
+- (void) start:(void (^)(NSError * __nullable error, NSArray * /* MCOMessageHeader */__nullable messages))completionBlock;
 
 @end
+NS_ASSUME_NONNULL_END
 
 #endif
diff --git a/src/objc/nntp/MCONNTPFetchServerTimeOperation.h b/src/objc/nntp/MCONNTPFetchServerTimeOperation.h
index a06dd746..38801810 100644
--- a/src/objc/nntp/MCONNTPFetchServerTimeOperation.h
+++ b/src/objc/nntp/MCONNTPFetchServerTimeOperation.h
@@ -15,6 +15,7 @@
 
 @class MCOIndexSet;
 
+NS_ASSUME_NONNULL_BEGIN
 /** This is an asynchronous operation that will fetch the list of a messages on the NNTP server. */
 @interface MCONNTPFetchServerTimeOperation : MCONNTPOperation
 
@@ -26,10 +27,11 @@
  - On success `error` will be nil and `date` will be the server's date and time as an NSDate.
  
  - On failure, `error` will be set with `MCOErrorDomain` as domain and an 
- error code available in MCOConstants.h, `messages` will be null
+ error code available in MCOConstants.h, `date` will be null
  */
-- (void) start:(void (^)(NSError * error, NSDate * date))completionBlock;
+- (void) start:(void (^)(NSError * __nullable error, NSDate * __nullable date))completionBlock;
 
 @end
+NS_ASSUME_NONNULL_END
 
 #endif
diff --git a/src/objc/nntp/MCONNTPListNewsgroupsOperation.h b/src/objc/nntp/MCONNTPListNewsgroupsOperation.h
index ea702b75..9cba21d6 100644
--- a/src/objc/nntp/MCONNTPListNewsgroupsOperation.h
+++ b/src/objc/nntp/MCONNTPListNewsgroupsOperation.h
@@ -13,6 +13,7 @@
 #import <Foundation/Foundation.h>
 #import <MailCore/MCONNTPOperation.h>
 
+NS_ASSUME_NONNULL_BEGIN
 @interface MCONNTPListNewsgroupsOperation : MCONNTPOperation
 
 /** 
@@ -25,8 +26,9 @@
  - On failure, `error` will be set with `MCOErrorDomain` as domain and an 
  error code available in MCOConstants.h, `messages` will be null
  */
-- (void) start:(void (^)(NSError * error, NSArray * /* MCONNTPGroupInfo */ messages))completionBlock;
+- (void) start:(void (^)(NSError * __nullable error, NSArray * /* MCONNTPGroupInfo */__nullable messages))completionBlock;
 
 @end
+NS_ASSUME_NONNULL_END
 
 #endif
diff --git a/src/objc/nntp/MCONNTPOperation.h b/src/objc/nntp/MCONNTPOperation.h
index 9d4e2fcf..bed8874e 100644
--- a/src/objc/nntp/MCONNTPOperation.h
+++ b/src/objc/nntp/MCONNTPOperation.h
@@ -18,6 +18,7 @@
  @see MCONNTPSession
  */
 
+NS_ASSUME_NONNULL_BEGIN
 @interface MCONNTPOperation : MCOOperation
 
 /** 
@@ -30,8 +31,9 @@
  - On failure, `error` will be set with `MCOErrorDomain` as domain and an 
  error code available in MCOConstants.h,
  */
-- (void) start:(void (^)(NSError * error))completionBlock;
+- (void) start:(void (^)(NSError * __nullable error))completionBlock;
 
 @end
+NS_ASSUME_NONNULL_END
 
 #endif
diff --git a/src/objc/nntp/MCONNTPSession.h b/src/objc/nntp/MCONNTPSession.h
index 083d973b..0637ec7e 100644
--- a/src/objc/nntp/MCONNTPSession.h
+++ b/src/objc/nntp/MCONNTPSession.h
@@ -100,7 +100,7 @@
  Returns an operation that will fetch the list of article numbers.
  
  MCONNTPFetchAllArticlesOperation * op = [session fetchAllArticlesOperation:@"comp.lang.c"];
- [op start:^(NSError * error, MCOIndexSet * articles) {
+ [op start:^(NSError * __nullable error, MCOIndexSet * articles) {
  }];
  */
 - (MCONNTPFetchAllArticlesOperation *) fetchAllArticlesOperation:(NSString *)group;
@@ -109,7 +109,7 @@
  Returns an operation that will fetch the header of the given message.
  
  MCONNTPFetchHeaderOperation * op = [session fetchHeaderOperationWithIndex:idx inGroup:@"comp.lang.c"];
- [op start:^(NSError * error, MCOMessageHeader * header) {
+ [op start:^(NSError * __nullable error, MCOMessageHeader * header) {
  // header is the parsed header of the message.
  }];
  */
@@ -119,7 +119,7 @@
  Returns an operation that will fetch an overview (headers) for a set of messages.
  
  MCONNTPFetchHeaderOperation * op = [session fetchOverviewOperationWithIndexes:indexes inGroup:@"comp.lang.c"];
- [op start:^(NSError * error, NSArray * headers) {
+ [op start:^(NSError * __nullable error, NSArray * headers) {
  // headers are the parsed headers of each part of the overview.
  }];
  */
@@ -129,7 +129,7 @@
  Returns an operation that will fetch the content of the given message.
  
  MCONNTPFetchArticleOperation * op = [session fetchArticleOperationWithIndex:idx inGroup:@"comp.lang.c"];
- [op start:^(NSError * error, NSData * messageData) {
+ [op start:^(NSError * __nullable error, NSData * messageData) {
  // messageData is the RFC 822 formatted message data.
  }];
  */
@@ -139,7 +139,7 @@
  Returns an operation that will fetch the content of a message with the given messageID.
  
  MCONNTPFetchArticleOperation * op = [session fetchArticleOperationWithMessageID:@"<MessageID123@mail.google.com>" inGroup:@"comp.lang.c"];
- [op start:^(NSError * error, NSData * messageData) {
+ [op start:^(NSError * __nullable error, NSData * messageData) {
  // messageData is the RFC 822 formatted message data.
  }];
  */
@@ -149,7 +149,7 @@
  Returns an operation that will fetch the server's date and time.
  
  MCONNTPFetchArticleOperation * op = [session fetchServerDateOperation];
- [op start:^(NSError * error, NSDate * serverDate) {
+ [op start:^(NSError * __nullable error, NSDate * serverDate) {
  }];
  */
 - (MCONNTPFetchServerTimeOperation *) fetchServerDateOperation;
@@ -158,7 +158,7 @@
  Returns an operation that will list all available newsgroups.
  
  MCONNTPListNewsgroupsOperation * op = [session listAllNewsgroupsOperation];
- [op start:^(NSError * error, NSArray * subscribedGroups) {
+ [op start:^(NSError * __nullable error, NSArray * subscribedGroups) {
  }];
  */
 - (MCONNTPListNewsgroupsOperation *) listAllNewsgroupsOperation;
@@ -167,7 +167,7 @@
  Returns an operation that will list server-suggested default newsgroups.
  
  MCONNTPListNewsgroupsOperation * op = [session listDefaultNewsgroupsOperation];
- [op start:^(NSError * error, NSArray * defaultGroups) {
+ [op start:^(NSError * __nullable error, NSArray * defaultGroups) {
  }];
  */
 - (MCONNTPListNewsgroupsOperation *) listDefaultNewsgroupsOperation;
@@ -176,7 +176,7 @@
  Returns an operation that will disconnect the session.
  
  MCONNTPOperation * op = [session disconnectOperation];
- [op start:^(NSError * error) {
+ [op start:^(NSError * __nullable error) {
  ...
  }];
  */
@@ -186,7 +186,7 @@
  Returns an operation that will check whether the NNTP account is valid.
  
  MCONNTPOperation * op = [session checkAccountOperation];
- [op start:^(NSError * error) {
+ [op start:^(NSError * __nullable error) {
  ...
  }];
  */