Reverts third_party/protobuf: Update to HEAD (f52e188fe4)

third_party/protobuf/objectivec/GPBMessage.m

Index: third_party/protobuf/objectivec/GPBMessage.m
diff --git a/third_party/protobuf/objectivec/GPBMessage.m b/third_party/protobuf/objectivec/GPBMessage.m
index 4a6f0612acb95b39d0591d6d95827e1046ef05e8..8134e25962dcb28c3b7b5258142ec251c078489f 100644
--- a/third_party/protobuf/objectivec/GPBMessage.m
+++ b/third_party/protobuf/objectivec/GPBMessage.m
@@ -44,16 +44,13 @@
 #import "GPBUnknownFieldSet_PackagePrivate.h"
 #import "GPBUtilities_PackagePrivate.h"
 
-// Direct access is use for speed, to avoid even internally declaring things
-// read/write, etc. The warning is enabled in the project to ensure code calling
-// protos can turn on -Wdirect-ivar-access without issues.
-#pragma clang diagnostic push
-#pragma clang diagnostic ignored "-Wdirect-ivar-access"
-
 NSString *const GPBMessageErrorDomain =
     GPBNSStringifySymbol(GPBMessageErrorDomain);
 
-NSString *const GPBErrorReasonKey = @"Reason";
+#ifdef DEBUG
+NSString *const GPBExceptionMessageKey =
+    GPBNSStringifySymbol(GPBExceptionMessage);
+#endif  // DEBUG
 
 static NSString *const kGPBDataCoderKey = @"GPBData";
 
@@ -98,36 +95,21 @@ static NSMutableDictionary *CloneExtensionMap(NSDictionary *extensionMap,
                                               NSZone *zone)
     __attribute__((ns_returns_retained));
 
-#ifdef DEBUG
 static NSError *MessageError(NSInteger code, NSDictionary *userInfo) {
   return [NSError errorWithDomain:GPBMessageErrorDomain
                              code:code
                          userInfo:userInfo];
 }
-#endif
 
-static NSError *ErrorFromException(NSException *exception) {
-  NSError *error = nil;
-
-  if ([exception.name isEqual:GPBCodedInputStreamException]) {
-    NSDictionary *exceptionInfo = exception.userInfo;
-    error = exceptionInfo[GPBCodedInputStreamUnderlyingErrorKey];
+static NSError *MessageErrorWithReason(NSInteger code, NSString *reason) {
+  NSDictionary *userInfo = nil;
+  if ([reason length]) {
+    userInfo = @{ @"Reason" : reason };
   }
-
-  if (!error) {
-    NSString *reason = exception.reason;
-    NSDictionary *userInfo = nil;
-    if ([reason length]) {
-      userInfo = @{ GPBErrorReasonKey : reason };
-    }
-
-    error = [NSError errorWithDomain:GPBMessageErrorDomain
-                                code:GPBMessageErrorCodeOther
-                            userInfo:userInfo];
-  }
-  return error;
+  return MessageError(code, userInfo);
 }
 
+
 static void CheckExtension(GPBMessage *self,
                            GPBExtensionDescriptor *extension) {
   if ([self class] != extension.containingMessageClass) {
@@ -712,7 +694,7 @@ void GPBClearMessageAutocreator(GPBMessage *self) {
     return;
   }
 
-#if defined(DEBUG) && DEBUG && !defined(NS_BLOCK_ASSERTIONS)
+#if DEBUG && !defined(NS_BLOCK_ASSERTIONS)
   // Either the autocreator must have its "has" flag set to YES, or it must be
   // NO and not equal to ourselves.
   BOOL autocreatorHas =
@@ -834,7 +816,8 @@ static GPBUnknownFieldSet *GetOrMakeUnknownFields(GPBMessage *self) {
       [self release];
       self = nil;
       if (errorPtr) {
-        *errorPtr = ErrorFromException(exception);
+        *errorPtr = MessageErrorWithReason(GPBMessageErrorCodeMalformedData,
+                                           exception.reason);
       }
     }
 #ifdef DEBUG
@@ -865,7 +848,8 @@ static GPBUnknownFieldSet *GetOrMakeUnknownFields(GPBMessage *self) {
       [self release];
       self = nil;
       if (errorPtr) {
-        *errorPtr = ErrorFromException(exception);
+        *errorPtr = MessageErrorWithReason(GPBMessageErrorCodeMalformedData,
+                                           exception.reason);
       }
     }
 #ifdef DEBUG
@@ -1752,7 +1736,7 @@ static GPBUnknownFieldSet *GetOrMakeUnknownFields(GPBMessage *self) {
 }
 
 - (BOOL)hasExtension:(GPBExtensionDescriptor *)extension {
-#if defined(DEBUG) && DEBUG
+#if DEBUG
   CheckExtension(self, extension);
 #endif  // DEBUG
   return nil != [extensionMap_ objectForKey:extension];
@@ -1777,6 +1761,11 @@ static GPBUnknownFieldSet *GetOrMakeUnknownFields(GPBMessage *self) {
   }
 }
 
+- (NSArray *)sortedExtensionsInUse {
+  return [[extensionMap_ allKeys]
+      sortedArrayUsingSelector:@selector(compareByFieldNumber:)];
+}
+
 - (void)setExtension:(GPBExtensionDescriptor *)extension value:(id)value {
   if (!value) {
     [self clearExtension:extension];
@@ -1933,7 +1922,8 @@ static GPBUnknownFieldSet *GetOrMakeUnknownFields(GPBMessage *self) {
   @catch (NSException *exception) {
     message = nil;
     if (errorPtr) {
-      *errorPtr = ErrorFromException(exception);
+      *errorPtr = MessageErrorWithReason(GPBMessageErrorCodeMalformedData,
+                                         exception.reason);
     }
   }
 #ifdef DEBUG
@@ -2274,9 +2264,6 @@ static void MergeRepeatedNotPackedFieldFromCodedInputStream(
   while (YES) {
     BOOL merged = NO;
     tag = GPBCodedInputStreamReadTag(state);
-    if (tag == 0) {
-      break;  // Reached end.
-    }
     for (NSUInteger i = 0; i < numFields; ++i) {
       if (startingIndex >= numFields) startingIndex = 0;
       GPBFieldDescriptor *fieldDescriptor = fields[startingIndex];
@@ -2315,7 +2302,7 @@ static void MergeRepeatedNotPackedFieldFromCodedInputStream(
       }
     }  // for(i < numFields)
 
-    if (!merged && (tag != 0)) {
+    if (!merged) {
       // Primitive, repeated types can be packed on unpacked on the wire, and
       // are parsed either way.  The above loop covered tag in the preferred
       // for, so this need to check the alternate form.
@@ -2570,7 +2557,7 @@ static void MergeRepeatedNotPackedFieldFromCodedInputStream(
 
 #pragma mark - isEqual: & hash Support
 
-- (BOOL)isEqual:(id)other {
+- (BOOL)isEqual:(GPBMessage *)other {
   if (other == self) {
     return YES;
   }
@@ -2579,10 +2566,9 @@ static void MergeRepeatedNotPackedFieldFromCodedInputStream(
     return NO;
   }
 
-  GPBMessage *otherMsg = other;
   GPBDescriptor *descriptor = [[self class] descriptor];
   uint8_t *selfStorage = (uint8_t *)messageStorage_;
-  uint8_t *otherStorage = (uint8_t *)otherMsg->messageStorage_;
+  uint8_t *otherStorage = (uint8_t *)other->messageStorage_;
 
   for (GPBFieldDescriptor *field in descriptor->fields_) {
     if (GPBFieldIsMapOrArray(field)) {
@@ -2635,7 +2621,7 @@ static void MergeRepeatedNotPackedFieldFromCodedInputStream(
         case GPBDataTypeFixed32:
         case GPBDataTypeUInt32:
         case GPBDataTypeFloat: {
-          GPBInternalCompileAssert(sizeof(float) == sizeof(uint32_t), float_not_32_bits);
+          _GPBCompileAssert(sizeof(float) == sizeof(uint32_t), float_not_32_bits);
           // These are all 32bit, signed/unsigned doesn't matter for equality.
           uint32_t *selfValPtr = (uint32_t *)&selfStorage[fieldOffset];
           uint32_t *otherValPtr = (uint32_t *)&otherStorage[fieldOffset];
@@ -2650,7 +2636,7 @@ static void MergeRepeatedNotPackedFieldFromCodedInputStream(
         case GPBDataTypeFixed64:
         case GPBDataTypeUInt64:
         case GPBDataTypeDouble: {
-          GPBInternalCompileAssert(sizeof(double) == sizeof(uint64_t), double_not_64_bits);
+          _GPBCompileAssert(sizeof(double) == sizeof(uint64_t), double_not_64_bits);
           // These are all 64bit, signed/unsigned doesn't matter for equality.
           uint64_t *selfValPtr = (uint64_t *)&selfStorage[fieldOffset];
           uint64_t *otherValPtr = (uint64_t *)&otherStorage[fieldOffset];
@@ -2676,14 +2662,14 @@ static void MergeRepeatedNotPackedFieldFromCodedInputStream(
   }  // for(fields)
 
   // nil and empty are equal
-  if (extensionMap_.count != 0 || otherMsg->extensionMap_.count != 0) {
-    if (![extensionMap_ isEqual:otherMsg->extensionMap_]) {
+  if (extensionMap_.count != 0 || other->extensionMap_.count != 0) {
+    if (![extensionMap_ isEqual:other->extensionMap_]) {
       return NO;
     }
   }
 
   // nil and empty are equal
-  GPBUnknownFieldSet *otherUnknowns = otherMsg->unknownFields_;
+  GPBUnknownFieldSet *otherUnknowns = other->unknownFields_;
   if ([unknownFields_ countOfFields] != 0 ||
       [otherUnknowns countOfFields] != 0) {
     if (![unknownFields_ isEqual:otherUnknowns]) {
@@ -2747,7 +2733,7 @@ static void MergeRepeatedNotPackedFieldFromCodedInputStream(
         case GPBDataTypeFixed32:
         case GPBDataTypeUInt32:
         case GPBDataTypeFloat: {
-          GPBInternalCompileAssert(sizeof(float) == sizeof(uint32_t), float_not_32_bits);
+          _GPBCompileAssert(sizeof(float) == sizeof(uint32_t), float_not_32_bits);
           // These are all 32bit, just mix it in.
           uint32_t *valPtr = (uint32_t *)&storage[fieldOffset];
           result = prime * result + *valPtr;
@@ -2759,7 +2745,7 @@ static void MergeRepeatedNotPackedFieldFromCodedInputStream(
         case GPBDataTypeFixed64:
         case GPBDataTypeUInt64:
         case GPBDataTypeDouble: {
-          GPBInternalCompileAssert(sizeof(double) == sizeof(uint64_t), double_not_64_bits);
+          _GPBCompileAssert(sizeof(double) == sizeof(uint64_t), double_not_64_bits);
           // These are all 64bit, just mix what fits into an NSUInteger in.
           uint64_t *valPtr = (uint64_t *)&storage[fieldOffset];
           result = prime * result + (NSUInteger)(*valPtr);
@@ -2806,7 +2792,7 @@ static void MergeRepeatedNotPackedFieldFromCodedInputStream(
   return description;
 }
 
-#if defined(DEBUG) && DEBUG
+#if DEBUG
 
 // Xcode 5.1 added support for custom quick look info.
 // https://developer.apple.com/library/ios/documentation/IDEs/Conceptual/CustomClassDisplay_in_QuickLook/CH01-quick_look_for_custom_objects/CH01-quick_look_for_custom_objects.html#//apple_ref/doc/uid/TP40014001-CH2-SW1
@@ -3196,35 +3182,3 @@ static void ResolveIvarSet(GPBFieldDescriptor *field,
 }
 
 @end
-
-#pragma mark - Messages from GPBUtilities.h but defined here for access to helpers.
-
-// Only exists for public api, no core code should use this.
-id GPBGetMessageRepeatedField(GPBMessage *self, GPBFieldDescriptor *field) {
-#if defined(DEBUG) && DEBUG
-  if (field.fieldType != GPBFieldTypeRepeated) {
-    [NSException raise:NSInvalidArgumentException
-                format:@"%@.%@ is not a repeated field.",
-     [self class], field.name];
-  }
-#endif
-  GPBDescriptor *descriptor = [[self class] descriptor];
-  GPBFileSyntax syntax = descriptor.file.syntax;
-  return GetOrCreateArrayIvarWithField(self, field, syntax);
-}
-
-// Only exists for public api, no core code should use this.
-id GPBGetMessageMapField(GPBMessage *self, GPBFieldDescriptor *field) {
-#if defined(DEBUG) && DEBUG
-  if (field.fieldType != GPBFieldTypeMap) {
-    [NSException raise:NSInvalidArgumentException
-                format:@"%@.%@ is not a map<> field.",
-     [self class], field.name];
-  }
-#endif
-  GPBDescriptor *descriptor = [[self class] descriptor];
-  GPBFileSyntax syntax = descriptor.file.syntax;
-  return GetOrCreateMapIvarWithField(self, field, syntax);
-}
-
-#pragma clang diagnostic pop