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protobuf/objectivec/GPBMessage.m

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// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc. All rights reserved.
// https://developers.google.com/protocol-buffers/
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#import <Foundation/Foundation.h>
#import "GPBMessage_PackagePrivate.h"
#import <objc/message.h>
#import <objc/runtime.h>
#import <os/lock.h>
#import <stdatomic.h>
#import "GPBArray_PackagePrivate.h"
#import "GPBCodedInputStream_PackagePrivate.h"
#import "GPBCodedOutputStream_PackagePrivate.h"
#import "GPBDescriptor_PackagePrivate.h"
#import "GPBDictionary_PackagePrivate.h"
#import "GPBExtensionInternals.h"
#import "GPBExtensionRegistry.h"
#import "GPBRootObject_PackagePrivate.h"
#import "GPBUnknownFieldSet_PackagePrivate.h"
#import "GPBUtilities_PackagePrivate.h"
// Returns a new instance that was automatically created by |autocreator| for
// its field |field|.
static GPBMessage *GPBCreateMessageWithAutocreator(Class msgClass, GPBMessage *autocreator,
GPBFieldDescriptor *field)
__attribute__((ns_returns_retained));
// 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";
static NSString *const kGPBDataCoderKey = @"GPBData";
// Length-delimited has a max size of 2GB, and thus messages do also.
// src/google/protobuf/message_lite also does this enforcement on the C++ side. Validation for
// parsing is done with GPBCodedInputStream; but for messages, it is less checks to do it within
// the message side since the input stream code calls these same bottlenecks.
// https://protobuf.dev/programming-guides/encoding/#cheat-sheet
static const size_t kMaximumMessageSize = 0x7fffffff;
NSString *const GPBMessageExceptionMessageTooLarge =
GPBNSStringifySymbol(GPBMessageExceptionMessageTooLarge);
//
// PLEASE REMEMBER:
//
// This is the base class for *all* messages generated, so any selector defined,
// *public* or *private* could end up colliding with a proto message field. So
// avoid using selectors that could match a property, use C functions to hide
// them, etc.
//
@interface GPBMessage () {
@package
GPBUnknownFieldSet *unknownFields_;
NSMutableDictionary *extensionMap_;
// Readonly access to autocreatedExtensionMap_ is protected via readOnlyLock_.
NSMutableDictionary *autocreatedExtensionMap_;
// If the object was autocreated, we remember the creator so that if we get
// mutated, we can inform the creator to make our field visible.
GPBMessage *autocreator_;
GPBFieldDescriptor *autocreatorField_;
GPBExtensionDescriptor *autocreatorExtension_;
// Messages can only be mutated from one thread. But some *readonly* operations modify internal
// state because they autocreate things. The autocreatedExtensionMap_ is one such structure.
// Access during readonly operations is protected via this lock.
//
// Long ago, this was an OSSpinLock, but then it came to light that there were issues for that on
// iOS:
// http://mjtsai.com/blog/2015/12/16/osspinlock-is-unsafe/
// https://lists.swift.org/pipermail/swift-dev/Week-of-Mon-20151214/000372.html
// It was changed to a dispatch_semaphore_t, but that has potential for priority inversion issues.
// The minOS versions are now high enough that os_unfair_lock can be used, and should provide
// all the support we need. For more information in the concurrency/locking space see:
// https://gist.github.com/tclementdev/6af616354912b0347cdf6db159c37057
// https://developer.apple.com/library/archive/documentation/Performance/Conceptual/EnergyGuide-iOS/PrioritizeWorkWithQoS.html
// https://developer.apple.com/videos/play/wwdc2017/706/
os_unfair_lock readOnlyLock_;
}
@end
static id CreateArrayForField(GPBFieldDescriptor *field, GPBMessage *autocreator)
__attribute__((ns_returns_retained));
static id GetOrCreateArrayIvarWithField(GPBMessage *self, GPBFieldDescriptor *field);
static id GetArrayIvarWithField(GPBMessage *self, GPBFieldDescriptor *field);
static id CreateMapForField(GPBFieldDescriptor *field, GPBMessage *autocreator)
__attribute__((ns_returns_retained));
static id GetOrCreateMapIvarWithField(GPBMessage *self, GPBFieldDescriptor *field);
static id GetMapIvarWithField(GPBMessage *self, GPBFieldDescriptor *field);
static NSMutableDictionary *CloneExtensionMap(NSDictionary *extensionMap, NSZone *zone)
__attribute__((ns_returns_retained));
static GPBUnknownFieldSet *GetOrMakeUnknownFields(GPBMessage *self);
#if defined(DEBUG) && 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];
}
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;
}
static void CheckExtension(GPBMessage *self, GPBExtensionDescriptor *extension) {
if (![self isKindOfClass:extension.containingMessageClass]) {
[NSException raise:NSInvalidArgumentException
format:@"Extension %@ used on wrong class (%@ instead of %@)",
extension.singletonName, [self class], extension.containingMessageClass];
}
}
static NSMutableDictionary *CloneExtensionMap(NSDictionary *extensionMap, NSZone *zone) {
if (extensionMap.count == 0) {
return nil;
}
NSMutableDictionary *result =
[[NSMutableDictionary allocWithZone:zone] initWithCapacity:extensionMap.count];
for (GPBExtensionDescriptor *extension in extensionMap) {
id value = [extensionMap objectForKey:extension];
BOOL isMessageExtension = GPBExtensionIsMessage(extension);
if (extension.repeated) {
if (isMessageExtension) {
NSMutableArray *list = [[NSMutableArray alloc] initWithCapacity:[value count]];
for (GPBMessage *listValue in value) {
GPBMessage *copiedValue = [listValue copyWithZone:zone];
[list addObject:copiedValue];
[copiedValue release];
}
[result setObject:list forKey:extension];
[list release];
} else {
NSMutableArray *copiedValue = [value mutableCopyWithZone:zone];
[result setObject:copiedValue forKey:extension];
[copiedValue release];
}
} else {
if (isMessageExtension) {
GPBMessage *copiedValue = [value copyWithZone:zone];
[result setObject:copiedValue forKey:extension];
[copiedValue release];
} else {
[result setObject:value forKey:extension];
}
}
}
return result;
}
static id CreateArrayForField(GPBFieldDescriptor *field, GPBMessage *autocreator) {
id result;
GPBDataType fieldDataType = GPBGetFieldDataType(field);
switch (fieldDataType) {
case GPBDataTypeBool:
result = [[GPBBoolArray alloc] init];
break;
case GPBDataTypeFixed32:
case GPBDataTypeUInt32:
result = [[GPBUInt32Array alloc] init];
break;
case GPBDataTypeInt32:
case GPBDataTypeSFixed32:
case GPBDataTypeSInt32:
result = [[GPBInt32Array alloc] init];
break;
case GPBDataTypeFixed64:
case GPBDataTypeUInt64:
result = [[GPBUInt64Array alloc] init];
break;
case GPBDataTypeInt64:
case GPBDataTypeSFixed64:
case GPBDataTypeSInt64:
result = [[GPBInt64Array alloc] init];
break;
case GPBDataTypeFloat:
result = [[GPBFloatArray alloc] init];
break;
case GPBDataTypeDouble:
result = [[GPBDoubleArray alloc] init];
break;
case GPBDataTypeEnum:
result = [[GPBEnumArray alloc] initWithValidationFunction:field.enumDescriptor.enumVerifier];
break;
case GPBDataTypeBytes:
case GPBDataTypeGroup:
case GPBDataTypeMessage:
case GPBDataTypeString:
if (autocreator) {
result = [[GPBAutocreatedArray alloc] init];
} else {
result = [[NSMutableArray alloc] init];
}
break;
}
if (autocreator) {
if (GPBDataTypeIsObject(fieldDataType)) {
GPBAutocreatedArray *autoArray = result;
autoArray->_autocreator = autocreator;
} else {
GPBInt32Array *gpbArray = result;
gpbArray->_autocreator = autocreator;
}
}
return result;
}
static id CreateMapForField(GPBFieldDescriptor *field, GPBMessage *autocreator) {
id result;
GPBDataType keyDataType = field.mapKeyDataType;
GPBDataType valueDataType = GPBGetFieldDataType(field);
switch (keyDataType) {
case GPBDataTypeBool:
switch (valueDataType) {
case GPBDataTypeBool:
result = [[GPBBoolBoolDictionary alloc] init];
break;
case GPBDataTypeFixed32:
case GPBDataTypeUInt32:
result = [[GPBBoolUInt32Dictionary alloc] init];
break;
case GPBDataTypeInt32:
case GPBDataTypeSFixed32:
case GPBDataTypeSInt32:
result = [[GPBBoolInt32Dictionary alloc] init];
break;
case GPBDataTypeFixed64:
case GPBDataTypeUInt64:
result = [[GPBBoolUInt64Dictionary alloc] init];
break;
case GPBDataTypeInt64:
case GPBDataTypeSFixed64:
case GPBDataTypeSInt64:
result = [[GPBBoolInt64Dictionary alloc] init];
break;
case GPBDataTypeFloat:
result = [[GPBBoolFloatDictionary alloc] init];
break;
case GPBDataTypeDouble:
result = [[GPBBoolDoubleDictionary alloc] init];
break;
case GPBDataTypeEnum:
result = [[GPBBoolEnumDictionary alloc]
initWithValidationFunction:field.enumDescriptor.enumVerifier];
break;
case GPBDataTypeBytes:
case GPBDataTypeMessage:
case GPBDataTypeString:
result = [[GPBBoolObjectDictionary alloc] init];
break;
case GPBDataTypeGroup:
NSCAssert(NO, @"shouldn't happen");
return nil;
}
break;
case GPBDataTypeFixed32:
case GPBDataTypeUInt32:
switch (valueDataType) {
case GPBDataTypeBool:
result = [[GPBUInt32BoolDictionary alloc] init];
break;
case GPBDataTypeFixed32:
case GPBDataTypeUInt32:
result = [[GPBUInt32UInt32Dictionary alloc] init];
break;
case GPBDataTypeInt32:
case GPBDataTypeSFixed32:
case GPBDataTypeSInt32:
result = [[GPBUInt32Int32Dictionary alloc] init];
break;
case GPBDataTypeFixed64:
case GPBDataTypeUInt64:
result = [[GPBUInt32UInt64Dictionary alloc] init];
break;
case GPBDataTypeInt64:
case GPBDataTypeSFixed64:
case GPBDataTypeSInt64:
result = [[GPBUInt32Int64Dictionary alloc] init];
break;
case GPBDataTypeFloat:
result = [[GPBUInt32FloatDictionary alloc] init];
break;
case GPBDataTypeDouble:
result = [[GPBUInt32DoubleDictionary alloc] init];
break;
case GPBDataTypeEnum:
result = [[GPBUInt32EnumDictionary alloc]
initWithValidationFunction:field.enumDescriptor.enumVerifier];
break;
case GPBDataTypeBytes:
case GPBDataTypeMessage:
case GPBDataTypeString:
result = [[GPBUInt32ObjectDictionary alloc] init];
break;
case GPBDataTypeGroup:
NSCAssert(NO, @"shouldn't happen");
return nil;
}
break;
case GPBDataTypeInt32:
case GPBDataTypeSFixed32:
case GPBDataTypeSInt32:
switch (valueDataType) {
case GPBDataTypeBool:
result = [[GPBInt32BoolDictionary alloc] init];
break;
case GPBDataTypeFixed32:
case GPBDataTypeUInt32:
result = [[GPBInt32UInt32Dictionary alloc] init];
break;
case GPBDataTypeInt32:
case GPBDataTypeSFixed32:
case GPBDataTypeSInt32:
result = [[GPBInt32Int32Dictionary alloc] init];
break;
case GPBDataTypeFixed64:
case GPBDataTypeUInt64:
result = [[GPBInt32UInt64Dictionary alloc] init];
break;
case GPBDataTypeInt64:
case GPBDataTypeSFixed64:
case GPBDataTypeSInt64:
result = [[GPBInt32Int64Dictionary alloc] init];
break;
case GPBDataTypeFloat:
result = [[GPBInt32FloatDictionary alloc] init];
break;
case GPBDataTypeDouble:
result = [[GPBInt32DoubleDictionary alloc] init];
break;
case GPBDataTypeEnum:
result = [[GPBInt32EnumDictionary alloc]
initWithValidationFunction:field.enumDescriptor.enumVerifier];
break;
case GPBDataTypeBytes:
case GPBDataTypeMessage:
case GPBDataTypeString:
result = [[GPBInt32ObjectDictionary alloc] init];
break;
case GPBDataTypeGroup:
NSCAssert(NO, @"shouldn't happen");
return nil;
}
break;
case GPBDataTypeFixed64:
case GPBDataTypeUInt64:
switch (valueDataType) {
case GPBDataTypeBool:
result = [[GPBUInt64BoolDictionary alloc] init];
break;
case GPBDataTypeFixed32:
case GPBDataTypeUInt32:
result = [[GPBUInt64UInt32Dictionary alloc] init];
break;
case GPBDataTypeInt32:
case GPBDataTypeSFixed32:
case GPBDataTypeSInt32:
result = [[GPBUInt64Int32Dictionary alloc] init];
break;
case GPBDataTypeFixed64:
case GPBDataTypeUInt64:
result = [[GPBUInt64UInt64Dictionary alloc] init];
break;
case GPBDataTypeInt64:
case GPBDataTypeSFixed64:
case GPBDataTypeSInt64:
result = [[GPBUInt64Int64Dictionary alloc] init];
break;
case GPBDataTypeFloat:
result = [[GPBUInt64FloatDictionary alloc] init];
break;
case GPBDataTypeDouble:
result = [[GPBUInt64DoubleDictionary alloc] init];
break;
case GPBDataTypeEnum:
result = [[GPBUInt64EnumDictionary alloc]
initWithValidationFunction:field.enumDescriptor.enumVerifier];
break;
case GPBDataTypeBytes:
case GPBDataTypeMessage:
case GPBDataTypeString:
result = [[GPBUInt64ObjectDictionary alloc] init];
break;
case GPBDataTypeGroup:
NSCAssert(NO, @"shouldn't happen");
return nil;
}
break;
case GPBDataTypeInt64:
case GPBDataTypeSFixed64:
case GPBDataTypeSInt64:
switch (valueDataType) {
case GPBDataTypeBool:
result = [[GPBInt64BoolDictionary alloc] init];
break;
case GPBDataTypeFixed32:
case GPBDataTypeUInt32:
result = [[GPBInt64UInt32Dictionary alloc] init];
break;
case GPBDataTypeInt32:
case GPBDataTypeSFixed32:
case GPBDataTypeSInt32:
result = [[GPBInt64Int32Dictionary alloc] init];
break;
case GPBDataTypeFixed64:
case GPBDataTypeUInt64:
result = [[GPBInt64UInt64Dictionary alloc] init];
break;
case GPBDataTypeInt64:
case GPBDataTypeSFixed64:
case GPBDataTypeSInt64:
result = [[GPBInt64Int64Dictionary alloc] init];
break;
case GPBDataTypeFloat:
result = [[GPBInt64FloatDictionary alloc] init];
break;
case GPBDataTypeDouble:
result = [[GPBInt64DoubleDictionary alloc] init];
break;
case GPBDataTypeEnum:
result = [[GPBInt64EnumDictionary alloc]
initWithValidationFunction:field.enumDescriptor.enumVerifier];
break;
case GPBDataTypeBytes:
case GPBDataTypeMessage:
case GPBDataTypeString:
result = [[GPBInt64ObjectDictionary alloc] init];
break;
case GPBDataTypeGroup:
NSCAssert(NO, @"shouldn't happen");
return nil;
}
break;
case GPBDataTypeString:
switch (valueDataType) {
case GPBDataTypeBool:
result = [[GPBStringBoolDictionary alloc] init];
break;
case GPBDataTypeFixed32:
case GPBDataTypeUInt32:
result = [[GPBStringUInt32Dictionary alloc] init];
break;
case GPBDataTypeInt32:
case GPBDataTypeSFixed32:
case GPBDataTypeSInt32:
result = [[GPBStringInt32Dictionary alloc] init];
break;
case GPBDataTypeFixed64:
case GPBDataTypeUInt64:
result = [[GPBStringUInt64Dictionary alloc] init];
break;
case GPBDataTypeInt64:
case GPBDataTypeSFixed64:
case GPBDataTypeSInt64:
result = [[GPBStringInt64Dictionary alloc] init];
break;
case GPBDataTypeFloat:
result = [[GPBStringFloatDictionary alloc] init];
break;
case GPBDataTypeDouble:
result = [[GPBStringDoubleDictionary alloc] init];
break;
case GPBDataTypeEnum:
result = [[GPBStringEnumDictionary alloc]
initWithValidationFunction:field.enumDescriptor.enumVerifier];
break;
case GPBDataTypeBytes:
case GPBDataTypeMessage:
case GPBDataTypeString:
if (autocreator) {
result = [[GPBAutocreatedDictionary alloc] init];
} else {
result = [[NSMutableDictionary alloc] init];
}
break;
case GPBDataTypeGroup:
NSCAssert(NO, @"shouldn't happen");
return nil;
}
break;
case GPBDataTypeFloat:
case GPBDataTypeDouble:
case GPBDataTypeEnum:
case GPBDataTypeBytes:
case GPBDataTypeGroup:
case GPBDataTypeMessage:
NSCAssert(NO, @"shouldn't happen");
return nil;
}
if (autocreator) {
if ((keyDataType == GPBDataTypeString) && GPBDataTypeIsObject(valueDataType)) {
GPBAutocreatedDictionary *autoDict = result;
autoDict->_autocreator = autocreator;
} else {
GPBInt32Int32Dictionary *gpbDict = result;
gpbDict->_autocreator = autocreator;
}
}
return result;
}
#if !defined(__clang_analyzer__)
// These functions are blocked from the analyzer because the analyzer sees the
// GPBSetRetainedObjectIvarWithFieldPrivate() call as consuming the array/map,
// so use of the array/map after the call returns is flagged as a use after
// free.
// But GPBSetRetainedObjectIvarWithFieldPrivate() is "consuming" the retain
// count be holding onto the object (it is transferring it), the object is
// still valid after returning from the call. The other way to avoid this
// would be to add a -retain/-autorelease, but that would force every
// repeated/map field parsed into the autorelease pool which is both a memory
// and performance hit.
static id GetOrCreateArrayIvarWithField(GPBMessage *self, GPBFieldDescriptor *field) {
id array = GPBGetObjectIvarWithFieldNoAutocreate(self, field);
if (!array) {
// No lock needed, this is called from places expecting to mutate
// so no threading protection is needed.
array = CreateArrayForField(field, nil);
GPBSetRetainedObjectIvarWithFieldPrivate(self, field, array);
}
return array;
}
// This is like GPBGetObjectIvarWithField(), but for arrays, it should
// only be used to wire the method into the class.
static id GetArrayIvarWithField(GPBMessage *self, GPBFieldDescriptor *field) {
uint8_t *storage = (uint8_t *)self->messageStorage_;
_Atomic(id) *typePtr = (_Atomic(id) *)&storage[field->description_->offset];
id array = atomic_load(typePtr);
if (array) {
return array;
}
id expected = nil;
id autocreated = CreateArrayForField(field, self);
if (atomic_compare_exchange_strong(typePtr, &expected, autocreated)) {
// Value was set, return it.
return autocreated;
}
// Some other thread set it, release the one created and return what got set.
if (GPBFieldDataTypeIsObject(field)) {
GPBAutocreatedArray *autoArray = autocreated;
autoArray->_autocreator = nil;
} else {
GPBInt32Array *gpbArray = autocreated;
gpbArray->_autocreator = nil;
}
[autocreated release];
return expected;
}
static id GetOrCreateMapIvarWithField(GPBMessage *self, GPBFieldDescriptor *field) {
id dict = GPBGetObjectIvarWithFieldNoAutocreate(self, field);
if (!dict) {
// No lock needed, this is called from places expecting to mutate
// so no threading protection is needed.
dict = CreateMapForField(field, nil);
GPBSetRetainedObjectIvarWithFieldPrivate(self, field, dict);
}
return dict;
}
// This is like GPBGetObjectIvarWithField(), but for maps, it should
// only be used to wire the method into the class.
static id GetMapIvarWithField(GPBMessage *self, GPBFieldDescriptor *field) {
uint8_t *storage = (uint8_t *)self->messageStorage_;
_Atomic(id) *typePtr = (_Atomic(id) *)&storage[field->description_->offset];
id dict = atomic_load(typePtr);
if (dict) {
return dict;
}
id expected = nil;
id autocreated = CreateMapForField(field, self);
if (atomic_compare_exchange_strong(typePtr, &expected, autocreated)) {
// Value was set, return it.
return autocreated;
}
// Some other thread set it, release the one created and return what got set.
if ((field.mapKeyDataType == GPBDataTypeString) && GPBFieldDataTypeIsObject(field)) {
GPBAutocreatedDictionary *autoDict = autocreated;
autoDict->_autocreator = nil;
} else {
GPBInt32Int32Dictionary *gpbDict = autocreated;
gpbDict->_autocreator = nil;
}
[autocreated release];
return expected;
}
#endif // !defined(__clang_analyzer__)
static void DecodeSingleValueFromInputStream(GPBExtensionDescriptor *extension,
GPBMessage *messageToGetExtension,
GPBCodedInputStream *input,
id<GPBExtensionRegistry> extensionRegistry,
BOOL isRepeated, GPBMessage *targetMessage) {
GPBExtensionDescription *description = extension->description_;
#if defined(DEBUG) && DEBUG && !defined(NS_BLOCK_ASSERTIONS)
if (GPBDataTypeIsMessage(description->dataType)) {
NSCAssert(targetMessage != nil, @"Internal error: must have a target message");
} else {
NSCAssert(targetMessage == nil, @"Internal error: should not have a target message");
}
#endif
GPBCodedInputStreamState *state = &input->state_;
id nsValue;
switch (description->dataType) {
case GPBDataTypeBool: {
BOOL value = GPBCodedInputStreamReadBool(state);
nsValue = [[NSNumber alloc] initWithBool:value];
break;
}
case GPBDataTypeFixed32: {
uint32_t value = GPBCodedInputStreamReadFixed32(state);
nsValue = [[NSNumber alloc] initWithUnsignedInt:value];
break;
}
case GPBDataTypeSFixed32: {
int32_t value = GPBCodedInputStreamReadSFixed32(state);
nsValue = [[NSNumber alloc] initWithInt:value];
break;
}
case GPBDataTypeFloat: {
float value = GPBCodedInputStreamReadFloat(state);
nsValue = [[NSNumber alloc] initWithFloat:value];
break;
}
case GPBDataTypeFixed64: {
uint64_t value = GPBCodedInputStreamReadFixed64(state);
nsValue = [[NSNumber alloc] initWithUnsignedLongLong:value];
break;
}
case GPBDataTypeSFixed64: {
int64_t value = GPBCodedInputStreamReadSFixed64(state);
nsValue = [[NSNumber alloc] initWithLongLong:value];
break;
}
case GPBDataTypeDouble: {
double value = GPBCodedInputStreamReadDouble(state);
nsValue = [[NSNumber alloc] initWithDouble:value];
break;
}
case GPBDataTypeInt32: {
int32_t value = GPBCodedInputStreamReadInt32(state);
nsValue = [[NSNumber alloc] initWithInt:value];
break;
}
case GPBDataTypeInt64: {
int64_t value = GPBCodedInputStreamReadInt64(state);
nsValue = [[NSNumber alloc] initWithLongLong:value];
break;
}
case GPBDataTypeSInt32: {
int32_t value = GPBCodedInputStreamReadSInt32(state);
nsValue = [[NSNumber alloc] initWithInt:value];
break;
}
case GPBDataTypeSInt64: {
int64_t value = GPBCodedInputStreamReadSInt64(state);
nsValue = [[NSNumber alloc] initWithLongLong:value];
break;
}
case GPBDataTypeUInt32: {
uint32_t value = GPBCodedInputStreamReadUInt32(state);
nsValue = [[NSNumber alloc] initWithUnsignedInt:value];
break;
}
case GPBDataTypeUInt64: {
uint64_t value = GPBCodedInputStreamReadUInt64(state);
nsValue = [[NSNumber alloc] initWithUnsignedLongLong:value];
break;
}
case GPBDataTypeBytes:
nsValue = GPBCodedInputStreamReadRetainedBytes(state);
break;
case GPBDataTypeString:
nsValue = GPBCodedInputStreamReadRetainedString(state);
break;
case GPBDataTypeEnum: {
int32_t val = GPBCodedInputStreamReadEnum(&input->state_);
GPBEnumDescriptor *enumDescriptor = extension.enumDescriptor;
// If run with source generated before the closed enum support, all enums
// will be considers not closed, so casing to the enum type for a switch
// could cause things to fall off the end of a switch.
if (!enumDescriptor.isClosed || enumDescriptor.enumVerifier(val)) {
nsValue = [[NSNumber alloc] initWithInt:val];
} else {
GPBUnknownFieldSet *unknownFields = GetOrMakeUnknownFields(messageToGetExtension);
[unknownFields mergeVarintField:extension->description_->fieldNumber value:val];
nsValue = nil;
}
break;
}
case GPBDataTypeGroup:
case GPBDataTypeMessage: {
if (description->dataType == GPBDataTypeGroup) {
[input readGroup:description->fieldNumber
message:targetMessage
extensionRegistry:extensionRegistry];
} else {
// description->dataType == GPBDataTypeMessage
if (GPBExtensionIsWireFormat(description)) {
// For MessageSet fields the message length will have already been
// read.
[targetMessage mergeFromCodedInputStream:input extensionRegistry:extensionRegistry];
} else {
[input readMessage:targetMessage extensionRegistry:extensionRegistry];
}
}
// Nothing to add below since the caller provided the message (and added it).
nsValue = nil;
break;
}
} // switch
if (nsValue) {
if (isRepeated) {
[messageToGetExtension addExtension:extension value:nsValue];
} else {
[messageToGetExtension setExtension:extension value:nsValue];
}
[nsValue release];
}
}
static void ExtensionMergeFromInputStream(GPBExtensionDescriptor *extension, BOOL isPackedOnStream,
GPBCodedInputStream *input,
id<GPBExtensionRegistry> extensionRegistry,
GPBMessage *message) {
GPBExtensionDescription *description = extension->description_;
GPBCodedInputStreamState *state = &input->state_;
if (isPackedOnStream) {
#if defined(DEBUG) && DEBUG && !defined(NS_BLOCK_ASSERTIONS)
NSCAssert(GPBExtensionIsRepeated(description), @"How was it packed if it isn't repeated?");
#endif
int32_t length = GPBCodedInputStreamReadInt32(state);
size_t limit = GPBCodedInputStreamPushLimit(state, length);
while (GPBCodedInputStreamBytesUntilLimit(state) > 0) {
DecodeSingleValueFromInputStream(extension, message, input, extensionRegistry,
/*isRepeated=*/YES, nil);
}
GPBCodedInputStreamPopLimit(state, limit);
} else {
BOOL isRepeated = GPBExtensionIsRepeated(description);
GPBMessage *targetMessage = nil;
if (GPBDataTypeIsMessage(description->dataType)) {
// For messages/groups create the targetMessage out here and add it to the objects graph in
// advance, that way if DecodeSingleValueFromInputStream() throw for a parsing issue, the
// object won't be leaked.
if (isRepeated) {
GPBDescriptor *descriptor = [extension.msgClass descriptor];
targetMessage = [[descriptor.messageClass alloc] init];
[message addExtension:extension value:targetMessage];
[targetMessage release];
} else {
targetMessage = [message getExistingExtension:extension];
if (!targetMessage) {
GPBDescriptor *descriptor = [extension.msgClass descriptor];
targetMessage = [[descriptor.messageClass alloc] init];
[message setExtension:extension value:targetMessage];
[targetMessage release];
}
}
}
DecodeSingleValueFromInputStream(extension, message, input, extensionRegistry, isRepeated,
targetMessage);
}
}
static GPBMessage *GPBCreateMessageWithAutocreator(Class msgClass, GPBMessage *autocreator,
GPBFieldDescriptor *field) {
GPBMessage *message = [[msgClass alloc] init];
message->autocreator_ = autocreator;
message->autocreatorField_ = [field retain];
return message;
}
static GPBMessage *CreateMessageWithAutocreatorForExtension(Class msgClass, GPBMessage *autocreator,
GPBExtensionDescriptor *extension)
__attribute__((ns_returns_retained));
static GPBMessage *CreateMessageWithAutocreatorForExtension(Class msgClass, GPBMessage *autocreator,
GPBExtensionDescriptor *extension) {
GPBMessage *message = [[msgClass alloc] init];
message->autocreator_ = autocreator;
message->autocreatorExtension_ = [extension retain];
return message;
}
BOOL GPBWasMessageAutocreatedBy(GPBMessage *message, GPBMessage *parent) {
return (message->autocreator_ == parent);
}
void GPBBecomeVisibleToAutocreator(GPBMessage *self) {
// Message objects that are implicitly created by accessing a message field
// are initially not visible via the hasX selector. This method makes them
// visible.
if (self->autocreator_) {
// This will recursively make all parent messages visible until it reaches a
// super-creator that's visible.
if (self->autocreatorField_) {
GPBSetObjectIvarWithFieldPrivate(self->autocreator_, self->autocreatorField_, self);
} else {
[self->autocreator_ setExtension:self->autocreatorExtension_ value:self];
}
}
}
void GPBAutocreatedArrayModified(GPBMessage *self, id array) {
// When one of our autocreated arrays adds elements, make it visible.
GPBDescriptor *descriptor = [[self class] descriptor];
for (GPBFieldDescriptor *field in descriptor->fields_) {
if (field.fieldType == GPBFieldTypeRepeated) {
id curArray = GPBGetObjectIvarWithFieldNoAutocreate(self, field);
if (curArray == array) {
if (GPBFieldDataTypeIsObject(field)) {
GPBAutocreatedArray *autoArray = array;
autoArray->_autocreator = nil;
} else {
GPBInt32Array *gpbArray = array;
gpbArray->_autocreator = nil;
}
GPBBecomeVisibleToAutocreator(self);
return;
}
}
}
NSCAssert(NO, @"Unknown autocreated %@ for %@.", [array class], self);
}
void GPBAutocreatedDictionaryModified(GPBMessage *self, id dictionary) {
// When one of our autocreated dicts adds elements, make it visible.
GPBDescriptor *descriptor = [[self class] descriptor];
for (GPBFieldDescriptor *field in descriptor->fields_) {
if (field.fieldType == GPBFieldTypeMap) {
id curDict = GPBGetObjectIvarWithFieldNoAutocreate(self, field);
if (curDict == dictionary) {
if ((field.mapKeyDataType == GPBDataTypeString) && GPBFieldDataTypeIsObject(field)) {
GPBAutocreatedDictionary *autoDict = dictionary;
autoDict->_autocreator = nil;
} else {
GPBInt32Int32Dictionary *gpbDict = dictionary;
gpbDict->_autocreator = nil;
}
GPBBecomeVisibleToAutocreator(self);
return;
}
}
}
NSCAssert(NO, @"Unknown autocreated %@ for %@.", [dictionary class], self);
}
void GPBClearMessageAutocreator(GPBMessage *self) {
if ((self == nil) || !self->autocreator_) {
return;
}
#if defined(DEBUG) && 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 =
(self->autocreatorField_ ? GPBGetHasIvarField(self->autocreator_, self->autocreatorField_)
: [self->autocreator_ hasExtension:self->autocreatorExtension_]);
GPBMessage *autocreatorFieldValue =
(self->autocreatorField_
? GPBGetObjectIvarWithFieldNoAutocreate(self->autocreator_, self->autocreatorField_)
: [self->autocreator_->autocreatedExtensionMap_
objectForKey:self->autocreatorExtension_]);
NSCAssert(autocreatorHas || autocreatorFieldValue != self,
@"Cannot clear autocreator because it still refers to self, self: %@.", self);
#endif // DEBUG && !defined(NS_BLOCK_ASSERTIONS)
self->autocreator_ = nil;
[self->autocreatorField_ release];
self->autocreatorField_ = nil;
[self->autocreatorExtension_ release];
self->autocreatorExtension_ = nil;
}
static GPBUnknownFieldSet *GetOrMakeUnknownFields(GPBMessage *self) {
if (!self->unknownFields_) {
self->unknownFields_ = [[GPBUnknownFieldSet alloc] init];
GPBBecomeVisibleToAutocreator(self);
}
return self->unknownFields_;
}
@implementation GPBMessage
+ (void)initialize {
Class pbMessageClass = [GPBMessage class];
if ([self class] == pbMessageClass) {
// This is here to start up the "base" class descriptor.
[self descriptor];
// Message shares extension method resolving with GPBRootObject so insure
// it is started up at the same time.
(void)[GPBRootObject class];
} else if ([self superclass] == pbMessageClass) {
// This is here to start up all the "message" subclasses. Just needs to be
// done for the messages, not any of the subclasses.
// This must be done in initialize to enforce thread safety of start up of
// the protocol buffer library.
// Note: The generated code for -descriptor calls
// +[GPBDescriptor allocDescriptorForClass:...], passing the GPBRootObject
// subclass for the file. That call chain is what ensures that *Root class
// is started up to support extension resolution off the message class
// (+resolveClassMethod: below) in a thread safe manner.
[self descriptor];
}
}
+ (instancetype)allocWithZone:(NSZone *)zone {
// Override alloc to allocate our classes with the additional storage
// required for the instance variables.
GPBDescriptor *descriptor = [self descriptor];
return NSAllocateObject(self, descriptor->storageSize_, zone);
}
+ (instancetype)alloc {
return [self allocWithZone:nil];
}
+ (GPBDescriptor *)descriptor {
// This is thread safe because it is called from +initialize.
static GPBDescriptor *descriptor = NULL;
static GPBFileDescriptor *fileDescriptor = NULL;
if (!descriptor) {
fileDescriptor = [[GPBFileDescriptor alloc] initWithPackage:@"internal"
syntax:GPBFileSyntaxProto2];
descriptor = [GPBDescriptor allocDescriptorForClass:[GPBMessage class]
rootClass:Nil
file:fileDescriptor
fields:NULL
fieldCount:0
storageSize:0
flags:0];
}
return descriptor;
}
+ (instancetype)message {
return [[[self alloc] init] autorelease];
}
- (instancetype)init {
if ((self = [super init])) {
messageStorage_ =
(GPBMessage_StoragePtr)(((uint8_t *)self) + class_getInstanceSize([self class]));
readOnlyLock_ = OS_UNFAIR_LOCK_INIT;
}
return self;
}
- (instancetype)initWithData:(NSData *)data error:(NSError **)errorPtr {
return [self initWithData:data extensionRegistry:nil error:errorPtr];
}
- (instancetype)initWithData:(NSData *)data
extensionRegistry:(id<GPBExtensionRegistry>)extensionRegistry
error:(NSError **)errorPtr {
if ((self = [self init])) {
if (![self mergeFromData:data extensionRegistry:extensionRegistry error:errorPtr]) {
[self release];
self = nil;
#if defined(DEBUG) && DEBUG
} else if (!self.initialized) {
[self release];
self = nil;
if (errorPtr) {
*errorPtr = MessageError(GPBMessageErrorCodeMissingRequiredField, nil);
}
#endif
}
}
return self;
}
- (instancetype)initWithCodedInputStream:(GPBCodedInputStream *)input
extensionRegistry:(id<GPBExtensionRegistry>)extensionRegistry
error:(NSError **)errorPtr {
if ((self = [self init])) {
@try {
[self mergeFromCodedInputStream:input extensionRegistry:extensionRegistry];
if (errorPtr) {
*errorPtr = nil;
}
} @catch (NSException *exception) {
[self release];
self = nil;
if (errorPtr) {
*errorPtr = ErrorFromException(exception);
}
}
#if defined(DEBUG) && DEBUG
if (self && !self.initialized) {
[self release];
self = nil;
if (errorPtr) {
*errorPtr = MessageError(GPBMessageErrorCodeMissingRequiredField, nil);
}
}
#endif
}
return self;
}
- (void)dealloc {
[self internalClear:NO];
NSCAssert(!autocreator_, @"Autocreator was not cleared before dealloc.");
[super dealloc];
}
- (void)copyFieldsInto:(GPBMessage *)message
zone:(NSZone *)zone
descriptor:(GPBDescriptor *)descriptor {
// Copy all the storage...
memcpy(message->messageStorage_, messageStorage_, descriptor->storageSize_);
// Loop over the fields doing fixup...
for (GPBFieldDescriptor *field in descriptor->fields_) {
if (GPBFieldIsMapOrArray(field)) {
id value = GPBGetObjectIvarWithFieldNoAutocreate(self, field);
if (value) {
// We need to copy the array/map, but the catch is for message fields,
// we also need to ensure all the messages as those need copying also.
id newValue;
if (GPBFieldDataTypeIsMessage(field)) {
if (field.fieldType == GPBFieldTypeRepeated) {
NSArray *existingArray = (NSArray *)value;
NSMutableArray *newArray =
[[NSMutableArray alloc] initWithCapacity:existingArray.count];
newValue = newArray;
for (GPBMessage *msg in existingArray) {
GPBMessage *copiedMsg = [msg copyWithZone:zone];
[newArray addObject:copiedMsg];
[copiedMsg release];
}
} else {
if (field.mapKeyDataType == GPBDataTypeString) {
// Map is an NSDictionary.
NSDictionary *existingDict = value;
NSMutableDictionary *newDict =
[[NSMutableDictionary alloc] initWithCapacity:existingDict.count];
newValue = newDict;
[existingDict enumerateKeysAndObjectsUsingBlock:^(NSString *key, GPBMessage *msg,
__unused BOOL *stop) {
GPBMessage *copiedMsg = [msg copyWithZone:zone];
[newDict setObject:copiedMsg forKey:key];
[copiedMsg release];
}];
} else {
// Is one of the GPB*ObjectDictionary classes. Type doesn't
// matter, just need one to invoke the selector.
GPBInt32ObjectDictionary *existingDict = value;
newValue = [existingDict deepCopyWithZone:zone];
}
}
} else {
// Not messages (but is a map/array)...
if (field.fieldType == GPBFieldTypeRepeated) {
if (GPBFieldDataTypeIsObject(field)) {
// NSArray
newValue = [value mutableCopyWithZone:zone];
} else {
// GPB*Array
newValue = [value copyWithZone:zone];
}
} else {
if ((field.mapKeyDataType == GPBDataTypeString) && GPBFieldDataTypeIsObject(field)) {
// NSDictionary
newValue = [value mutableCopyWithZone:zone];
} else {
// Is one of the GPB*Dictionary classes. Type doesn't matter,
// just need one to invoke the selector.
GPBInt32Int32Dictionary *existingDict = value;
newValue = [existingDict copyWithZone:zone];
}
}
}
// We retain here because the memcpy picked up the pointer value and
// the next call to SetRetainedObject... will release the current value.
[value retain];
GPBSetRetainedObjectIvarWithFieldPrivate(message, field, newValue);
}
} else if (GPBFieldDataTypeIsMessage(field)) {
// For object types, if we have a value, copy it. If we don't,
// zero it to remove the pointer to something that was autocreated
// (and the ptr just got memcpyed).
if (GPBGetHasIvarField(self, field)) {
GPBMessage *value = GPBGetObjectIvarWithFieldNoAutocreate(self, field);
GPBMessage *newValue = [value copyWithZone:zone];
// We retain here because the memcpy picked up the pointer value and
// the next call to SetRetainedObject... will release the current value.
[value retain];
GPBSetRetainedObjectIvarWithFieldPrivate(message, field, newValue);
} else {
uint8_t *storage = (uint8_t *)message->messageStorage_;
id *typePtr = (id *)&storage[field->description_->offset];
*typePtr = NULL;
}
} else if (GPBFieldDataTypeIsObject(field) && GPBGetHasIvarField(self, field)) {
// A set string/data value (message picked off above), copy it.
id value = GPBGetObjectIvarWithFieldNoAutocreate(self, field);
id newValue = [value copyWithZone:zone];
// We retain here because the memcpy picked up the pointer value and
// the next call to SetRetainedObject... will release the current value.
[value retain];
GPBSetRetainedObjectIvarWithFieldPrivate(message, field, newValue);
} else {
// memcpy took care of the rest of the primitive fields if they were set.
}
} // for (field in descriptor->fields_)
}
- (id)copyWithZone:(NSZone *)zone {
GPBDescriptor *descriptor = [self descriptor];
GPBMessage *result = [[descriptor.messageClass allocWithZone:zone] init];
[self copyFieldsInto:result zone:zone descriptor:descriptor];
// Make immutable copies of the extra bits.
result->unknownFields_ = [unknownFields_ copyWithZone:zone];
result->extensionMap_ = CloneExtensionMap(extensionMap_, zone);
return result;
}
- (void)clear {
[self internalClear:YES];
}
- (void)internalClear:(BOOL)zeroStorage {
GPBDescriptor *descriptor = [self descriptor];
for (GPBFieldDescriptor *field in descriptor->fields_) {
if (GPBFieldIsMapOrArray(field)) {
id arrayOrMap = GPBGetObjectIvarWithFieldNoAutocreate(self, field);
if (arrayOrMap) {
if (field.fieldType == GPBFieldTypeRepeated) {
if (GPBFieldDataTypeIsObject(field)) {
if ([arrayOrMap isKindOfClass:[GPBAutocreatedArray class]]) {
GPBAutocreatedArray *autoArray = arrayOrMap;
if (autoArray->_autocreator == self) {
autoArray->_autocreator = nil;
}
}
} else {
// Type doesn't matter, it is a GPB*Array.
GPBInt32Array *gpbArray = arrayOrMap;
if (gpbArray->_autocreator == self) {
gpbArray->_autocreator = nil;
}
}
} else {
if ((field.mapKeyDataType == GPBDataTypeString) && GPBFieldDataTypeIsObject(field)) {
if ([arrayOrMap isKindOfClass:[GPBAutocreatedDictionary class]]) {
GPBAutocreatedDictionary *autoDict = arrayOrMap;
if (autoDict->_autocreator == self) {
autoDict->_autocreator = nil;
}
}
} else {
// Type doesn't matter, it is a GPB*Dictionary.
GPBInt32Int32Dictionary *gpbDict = arrayOrMap;
if (gpbDict->_autocreator == self) {
gpbDict->_autocreator = nil;
}
}
}
[arrayOrMap release];
}
} else if (GPBFieldDataTypeIsMessage(field)) {
GPBClearAutocreatedMessageIvarWithField(self, field);
GPBMessage *value = GPBGetObjectIvarWithFieldNoAutocreate(self, field);
[value release];
} else if (GPBFieldDataTypeIsObject(field) && GPBGetHasIvarField(self, field)) {
id value = GPBGetObjectIvarWithField(self, field);
[value release];
}
}
// GPBClearMessageAutocreator() expects that its caller has already been
// removed from autocreatedExtensionMap_ so we set to nil first.
NSArray *autocreatedValues = [autocreatedExtensionMap_ allValues];
[autocreatedExtensionMap_ release];
autocreatedExtensionMap_ = nil;
// Since we're clearing all of our extensions, make sure that we clear the
// autocreator on any that we've created so they no longer refer to us.
for (GPBMessage *value in autocreatedValues) {
NSCAssert(GPBWasMessageAutocreatedBy(value, self),
@"Autocreated extension does not refer back to self.");
GPBClearMessageAutocreator(value);
}
[extensionMap_ release];
extensionMap_ = nil;
[unknownFields_ release];
unknownFields_ = nil;
// Note that clearing does not affect autocreator_. If we are being cleared
// because of a dealloc, then autocreator_ should be nil anyway. If we are
// being cleared because someone explicitly clears us, we don't want to
// sever our relationship with our autocreator.
if (zeroStorage) {
memset(messageStorage_, 0, descriptor->storageSize_);
}
}
- (BOOL)isInitialized {
GPBDescriptor *descriptor = [self descriptor];
for (GPBFieldDescriptor *field in descriptor->fields_) {
if (field.isRequired) {
if (!GPBGetHasIvarField(self, field)) {
return NO;
}
}
if (GPBFieldDataTypeIsMessage(field)) {
GPBFieldType fieldType = field.fieldType;
if (fieldType == GPBFieldTypeSingle) {
if (field.isRequired) {
GPBMessage *message = GPBGetMessageMessageField(self, field);
if (!message.initialized) {
return NO;
}
} else {
NSAssert(field.isOptional, @"%@: Single message field %@ not required or optional?",
[self class], field.name);
if (GPBGetHasIvarField(self, field)) {
GPBMessage *message = GPBGetMessageMessageField(self, field);
if (!message.initialized) {
return NO;
}
}
}
} else if (fieldType == GPBFieldTypeRepeated) {
NSArray *array = GPBGetObjectIvarWithFieldNoAutocreate(self, field);
for (GPBMessage *message in array) {
if (!message.initialized) {
return NO;
}
}
} else { // fieldType == GPBFieldTypeMap
if (field.mapKeyDataType == GPBDataTypeString) {
NSDictionary *map = GPBGetObjectIvarWithFieldNoAutocreate(self, field);
if (map && !GPBDictionaryIsInitializedInternalHelper(map, field)) {
return NO;
}
} else {
// Real type is GPB*ObjectDictionary, exact type doesn't matter.
GPBInt32ObjectDictionary *map = GPBGetObjectIvarWithFieldNoAutocreate(self, field);
if (map && ![map isInitialized]) {
return NO;
}
}
}
}
}
__block BOOL result = YES;
[extensionMap_
enumerateKeysAndObjectsUsingBlock:^(GPBExtensionDescriptor *extension, id obj, BOOL *stop) {
if (GPBExtensionIsMessage(extension)) {
if (extension.isRepeated) {
for (GPBMessage *msg in obj) {
if (!msg.initialized) {
result = NO;
*stop = YES;
break;
}
}
} else {
GPBMessage *asMsg = obj;
if (!asMsg.initialized) {
result = NO;
*stop = YES;
}
}
}
}];
return result;
}
- (GPBDescriptor *)descriptor {
return [[self class] descriptor];
}
- (NSData *)data {
#if defined(DEBUG) && DEBUG
if (!self.initialized) {
return nil;
}
#endif
size_t expectedSize = [self serializedSize];
if (expectedSize > kMaximumMessageSize) {
return nil;
}
NSMutableData *data = [NSMutableData dataWithLength:expectedSize];
GPBCodedOutputStream *stream = [[GPBCodedOutputStream alloc] initWithData:data];
@try {
[self writeToCodedOutputStream:stream];
} @catch (NSException *exception) {
// This really shouldn't happen. Normally, this could mean there was a bug in the library and it
// failed to match between computing the size and writing out the bytes. However, the more
// common cause is while one thread was writing out the data, some other thread had a reference
// to this message or a message used as a nested field, and that other thread mutated that
// message, causing the pre computed serializedSize to no longer match the final size after
// serialization. It is not safe to mutate a message while accessing it from another thread.
#if defined(DEBUG) && DEBUG
NSLog(@"%@: Internal exception while building message data: %@", [self class], exception);
#endif
data = nil;
}
#if defined(DEBUG) && DEBUG
NSAssert(!data || [stream bytesWritten] == expectedSize, @"Internal error within the library");
#endif
[stream release];
return data;
}
- (NSData *)delimitedData {
size_t serializedSize = [self serializedSize];
size_t varintSize = GPBComputeRawVarint32SizeForInteger(serializedSize);
NSMutableData *data = [NSMutableData dataWithLength:(serializedSize + varintSize)];
GPBCodedOutputStream *stream = [[GPBCodedOutputStream alloc] initWithData:data];
@try {
[self writeDelimitedToCodedOutputStream:stream];
} @catch (NSException *exception) {
// This really shouldn't happen. Normally, this could mean there was a bug in the library and it
// failed to match between computing the size and writing out the bytes. However, the more
// common cause is while one thread was writing out the data, some other thread had a reference
// to this message or a message used as a nested field, and that other thread mutated that
// message, causing the pre computed serializedSize to no longer match the final size after
// serialization. It is not safe to mutate a message while accessing it from another thread.
#if defined(DEBUG) && DEBUG
NSLog(@"%@: Internal exception while building message delimitedData: %@", [self class],
exception);
#endif
// If it happens, truncate.
data.length = 0;
}
[stream release];
return data;
}
- (void)writeToOutputStream:(NSOutputStream *)output {
GPBCodedOutputStream *stream = [[GPBCodedOutputStream alloc] initWithOutputStream:output];
@try {
[self writeToCodedOutputStream:stream];
size_t bytesWritten = [stream bytesWritten];
if (bytesWritten > kMaximumMessageSize) {
[NSException raise:GPBMessageExceptionMessageTooLarge
format:@"Message would have been %zu bytes", bytesWritten];
}
} @finally {
[stream release];
}
}
- (void)writeToCodedOutputStream:(GPBCodedOutputStream *)output {
GPBDescriptor *descriptor = [self descriptor];
NSArray *fieldsArray = descriptor->fields_;
NSUInteger fieldCount = fieldsArray.count;
const GPBExtensionRange *extensionRanges = descriptor.extensionRanges;
NSUInteger extensionRangesCount = descriptor.extensionRangesCount;
NSArray *sortedExtensions =
[[extensionMap_ allKeys] sortedArrayUsingSelector:@selector(compareByFieldNumber:)];
for (NSUInteger i = 0, j = 0; i < fieldCount || j < extensionRangesCount;) {
if (i == fieldCount) {
[self writeExtensionsToCodedOutputStream:output
range:extensionRanges[j++]
sortedExtensions:sortedExtensions];
} else if (j == extensionRangesCount ||
GPBFieldNumber(fieldsArray[i]) < extensionRanges[j].start) {
[self writeField:fieldsArray[i++] toCodedOutputStream:output];
} else {
[self writeExtensionsToCodedOutputStream:output
range:extensionRanges[j++]
sortedExtensions:sortedExtensions];
}
}
if (descriptor.isWireFormat) {
[unknownFields_ writeAsMessageSetTo:output];
} else {
[unknownFields_ writeToCodedOutputStream:output];
}
}
- (void)writeDelimitedToOutputStream:(NSOutputStream *)output {
GPBCodedOutputStream *codedOutput = [[GPBCodedOutputStream alloc] initWithOutputStream:output];
@try {
[self writeDelimitedToCodedOutputStream:codedOutput];
} @finally {
[codedOutput release];
}
}
- (void)writeDelimitedToCodedOutputStream:(GPBCodedOutputStream *)output {
size_t expectedSize = [self serializedSize];
if (expectedSize > kMaximumMessageSize) {
[NSException raise:GPBMessageExceptionMessageTooLarge
format:@"Message would have been %zu bytes", expectedSize];
}
[output writeRawVarintSizeTAs32:expectedSize];
#if defined(DEBUG) && DEBUG && !defined(NS_BLOCK_ASSERTIONS)
size_t initialSize = [output bytesWritten];
#endif
[self writeToCodedOutputStream:output];
#if defined(DEBUG) && DEBUG && !defined(NS_BLOCK_ASSERTIONS)
NSAssert(([output bytesWritten] - initialSize) == expectedSize,
@"Internal error within the library");
#endif
}
- (void)writeField:(GPBFieldDescriptor *)field toCodedOutputStream:(GPBCodedOutputStream *)output {
GPBFieldType fieldType = field.fieldType;
if (fieldType == GPBFieldTypeSingle) {
BOOL has = GPBGetHasIvarField(self, field);
if (!has) {
return;
}
}
uint32_t fieldNumber = GPBFieldNumber(field);
switch (GPBGetFieldDataType(field)) {
// clang-format off
//%PDDM-DEFINE FIELD_CASE(TYPE, REAL_TYPE)
//%FIELD_CASE_FULL(TYPE, REAL_TYPE, REAL_TYPE)
//%PDDM-DEFINE FIELD_CASE_FULL(TYPE, REAL_TYPE, ARRAY_TYPE)
//% case GPBDataType##TYPE:
//% if (fieldType == GPBFieldTypeRepeated) {
//% uint32_t tag = field.isPackable ? GPBFieldTag(field) : 0;
//% GPB##ARRAY_TYPE##Array *array =
//% GPBGetObjectIvarWithFieldNoAutocreate(self, field);
//% [output write##TYPE##Array:fieldNumber values:array tag:tag];
//% } else if (fieldType == GPBFieldTypeSingle) {
//% [output write##TYPE:fieldNumber
//% TYPE$S value:GPBGetMessage##REAL_TYPE##Field(self, field)];
//% } else { // fieldType == GPBFieldTypeMap
//% // Exact type here doesn't matter.
//% GPBInt32##ARRAY_TYPE##Dictionary *dict =
//% GPBGetObjectIvarWithFieldNoAutocreate(self, field);
//% [dict writeToCodedOutputStream:output asField:field];
//% }
//% break;
//%
//%PDDM-DEFINE FIELD_CASE2(TYPE)
//% case GPBDataType##TYPE:
//% if (fieldType == GPBFieldTypeRepeated) {
//% NSArray *array = GPBGetObjectIvarWithFieldNoAutocreate(self, field);
//% [output write##TYPE##Array:fieldNumber values:array];
//% } else if (fieldType == GPBFieldTypeSingle) {
//% // GPBGetObjectIvarWithFieldNoAutocreate() avoids doing the has check
//% // again.
//% [output write##TYPE:fieldNumber
//% TYPE$S value:GPBGetObjectIvarWithFieldNoAutocreate(self, field)];
//% } else { // fieldType == GPBFieldTypeMap
//% // Exact type here doesn't matter.
//% id dict = GPBGetObjectIvarWithFieldNoAutocreate(self, field);
//% GPBDataType mapKeyDataType = field.mapKeyDataType;
//% if (mapKeyDataType == GPBDataTypeString) {
//% GPBDictionaryWriteToStreamInternalHelper(output, dict, field);
//% } else {
//% [dict writeToCodedOutputStream:output asField:field];
//% }
//% }
//% break;
//%
//%PDDM-EXPAND FIELD_CASE(Bool, Bool)
// This block of code is generated, do not edit it directly.
case GPBDataTypeBool:
if (fieldType == GPBFieldTypeRepeated) {
uint32_t tag = field.isPackable ? GPBFieldTag(field) : 0;
GPBBoolArray *array =
GPBGetObjectIvarWithFieldNoAutocreate(self, field);
[output writeBoolArray:fieldNumber values:array tag:tag];
} else if (fieldType == GPBFieldTypeSingle) {
[output writeBool:fieldNumber
value:GPBGetMessageBoolField(self, field)];
} else { // fieldType == GPBFieldTypeMap
// Exact type here doesn't matter.
GPBInt32BoolDictionary *dict =
GPBGetObjectIvarWithFieldNoAutocreate(self, field);
[dict writeToCodedOutputStream:output asField:field];
}
break;
//%PDDM-EXPAND FIELD_CASE(Fixed32, UInt32)
// This block of code is generated, do not edit it directly.
case GPBDataTypeFixed32:
if (fieldType == GPBFieldTypeRepeated) {
uint32_t tag = field.isPackable ? GPBFieldTag(field) : 0;
GPBUInt32Array *array =
GPBGetObjectIvarWithFieldNoAutocreate(self, field);
[output writeFixed32Array:fieldNumber values:array tag:tag];
} else if (fieldType == GPBFieldTypeSingle) {
[output writeFixed32:fieldNumber
value:GPBGetMessageUInt32Field(self, field)];
} else { // fieldType == GPBFieldTypeMap
// Exact type here doesn't matter.
GPBInt32UInt32Dictionary *dict =
GPBGetObjectIvarWithFieldNoAutocreate(self, field);
[dict writeToCodedOutputStream:output asField:field];
}
break;
//%PDDM-EXPAND FIELD_CASE(SFixed32, Int32)
// This block of code is generated, do not edit it directly.
case GPBDataTypeSFixed32:
if (fieldType == GPBFieldTypeRepeated) {
uint32_t tag = field.isPackable ? GPBFieldTag(field) : 0;
GPBInt32Array *array =
GPBGetObjectIvarWithFieldNoAutocreate(self, field);
[output writeSFixed32Array:fieldNumber values:array tag:tag];
} else if (fieldType == GPBFieldTypeSingle) {
[output writeSFixed32:fieldNumber
value:GPBGetMessageInt32Field(self, field)];
} else { // fieldType == GPBFieldTypeMap
// Exact type here doesn't matter.
GPBInt32Int32Dictionary *dict =
GPBGetObjectIvarWithFieldNoAutocreate(self, field);
[dict writeToCodedOutputStream:output asField:field];
}
break;
//%PDDM-EXPAND FIELD_CASE(Float, Float)
// This block of code is generated, do not edit it directly.
case GPBDataTypeFloat:
if (fieldType == GPBFieldTypeRepeated) {
uint32_t tag = field.isPackable ? GPBFieldTag(field) : 0;
GPBFloatArray *array =
GPBGetObjectIvarWithFieldNoAutocreate(self, field);
[output writeFloatArray:fieldNumber values:array tag:tag];
} else if (fieldType == GPBFieldTypeSingle) {
[output writeFloat:fieldNumber
value:GPBGetMessageFloatField(self, field)];
} else { // fieldType == GPBFieldTypeMap
// Exact type here doesn't matter.
GPBInt32FloatDictionary *dict =
GPBGetObjectIvarWithFieldNoAutocreate(self, field);
[dict writeToCodedOutputStream:output asField:field];
}
break;
//%PDDM-EXPAND FIELD_CASE(Fixed64, UInt64)
// This block of code is generated, do not edit it directly.
case GPBDataTypeFixed64:
if (fieldType == GPBFieldTypeRepeated) {
uint32_t tag = field.isPackable ? GPBFieldTag(field) : 0;
GPBUInt64Array *array =
GPBGetObjectIvarWithFieldNoAutocreate(self, field);
[output writeFixed64Array:fieldNumber values:array tag:tag];
} else if (fieldType == GPBFieldTypeSingle) {
[output writeFixed64:fieldNumber
value:GPBGetMessageUInt64Field(self, field)];
} else { // fieldType == GPBFieldTypeMap
// Exact type here doesn't matter.
GPBInt32UInt64Dictionary *dict =
GPBGetObjectIvarWithFieldNoAutocreate(self, field);
[dict writeToCodedOutputStream:output asField:field];
}
break;
//%PDDM-EXPAND FIELD_CASE(SFixed64, Int64)
// This block of code is generated, do not edit it directly.
case GPBDataTypeSFixed64:
if (fieldType == GPBFieldTypeRepeated) {
uint32_t tag = field.isPackable ? GPBFieldTag(field) : 0;
GPBInt64Array *array =
GPBGetObjectIvarWithFieldNoAutocreate(self, field);
[output writeSFixed64Array:fieldNumber values:array tag:tag];
} else if (fieldType == GPBFieldTypeSingle) {
[output writeSFixed64:fieldNumber
value:GPBGetMessageInt64Field(self, field)];
} else { // fieldType == GPBFieldTypeMap
// Exact type here doesn't matter.
GPBInt32Int64Dictionary *dict =
GPBGetObjectIvarWithFieldNoAutocreate(self, field);
[dict writeToCodedOutputStream:output asField:field];
}
break;
//%PDDM-EXPAND FIELD_CASE(Double, Double)
// This block of code is generated, do not edit it directly.
case GPBDataTypeDouble:
if (fieldType == GPBFieldTypeRepeated) {
uint32_t tag = field.isPackable ? GPBFieldTag(field) : 0;
GPBDoubleArray *array =
GPBGetObjectIvarWithFieldNoAutocreate(self, field);
[output writeDoubleArray:fieldNumber values:array tag:tag];
} else if (fieldType == GPBFieldTypeSingle) {
[output writeDouble:fieldNumber
value:GPBGetMessageDoubleField(self, field)];
} else { // fieldType == GPBFieldTypeMap
// Exact type here doesn't matter.
GPBInt32DoubleDictionary *dict =
GPBGetObjectIvarWithFieldNoAutocreate(self, field);
[dict writeToCodedOutputStream:output asField:field];
}
break;
//%PDDM-EXPAND FIELD_CASE(Int32, Int32)
// This block of code is generated, do not edit it directly.
case GPBDataTypeInt32:
if (fieldType == GPBFieldTypeRepeated) {
uint32_t tag = field.isPackable ? GPBFieldTag(field) : 0;
GPBInt32Array *array =
GPBGetObjectIvarWithFieldNoAutocreate(self, field);
[output writeInt32Array:fieldNumber values:array tag:tag];
} else if (fieldType == GPBFieldTypeSingle) {
[output writeInt32:fieldNumber
value:GPBGetMessageInt32Field(self, field)];
} else { // fieldType == GPBFieldTypeMap
// Exact type here doesn't matter.
GPBInt32Int32Dictionary *dict =
GPBGetObjectIvarWithFieldNoAutocreate(self, field);
[dict writeToCodedOutputStream:output asField:field];
}
break;
//%PDDM-EXPAND FIELD_CASE(Int64, Int64)
// This block of code is generated, do not edit it directly.
case GPBDataTypeInt64:
if (fieldType == GPBFieldTypeRepeated) {
uint32_t tag = field.isPackable ? GPBFieldTag(field) : 0;
GPBInt64Array *array =
GPBGetObjectIvarWithFieldNoAutocreate(self, field);
[output writeInt64Array:fieldNumber values:array tag:tag];
} else if (fieldType == GPBFieldTypeSingle) {
[output writeInt64:fieldNumber
value:GPBGetMessageInt64Field(self, field)];
} else { // fieldType == GPBFieldTypeMap
// Exact type here doesn't matter.
GPBInt32Int64Dictionary *dict =
GPBGetObjectIvarWithFieldNoAutocreate(self, field);
[dict writeToCodedOutputStream:output asField:field];
}
break;
//%PDDM-EXPAND FIELD_CASE(SInt32, Int32)
// This block of code is generated, do not edit it directly.
case GPBDataTypeSInt32:
if (fieldType == GPBFieldTypeRepeated) {
uint32_t tag = field.isPackable ? GPBFieldTag(field) : 0;
GPBInt32Array *array =
GPBGetObjectIvarWithFieldNoAutocreate(self, field);
[output writeSInt32Array:fieldNumber values:array tag:tag];
} else if (fieldType == GPBFieldTypeSingle) {
[output writeSInt32:fieldNumber
value:GPBGetMessageInt32Field(self, field)];
} else { // fieldType == GPBFieldTypeMap
// Exact type here doesn't matter.
GPBInt32Int32Dictionary *dict =
GPBGetObjectIvarWithFieldNoAutocreate(self, field);
[dict writeToCodedOutputStream:output asField:field];
}
break;
//%PDDM-EXPAND FIELD_CASE(SInt64, Int64)
// This block of code is generated, do not edit it directly.
case GPBDataTypeSInt64:
if (fieldType == GPBFieldTypeRepeated) {
uint32_t tag = field.isPackable ? GPBFieldTag(field) : 0;
GPBInt64Array *array =
GPBGetObjectIvarWithFieldNoAutocreate(self, field);
[output writeSInt64Array:fieldNumber values:array tag:tag];
} else if (fieldType == GPBFieldTypeSingle) {
[output writeSInt64:fieldNumber
value:GPBGetMessageInt64Field(self, field)];
} else { // fieldType == GPBFieldTypeMap
// Exact type here doesn't matter.
GPBInt32Int64Dictionary *dict =
GPBGetObjectIvarWithFieldNoAutocreate(self, field);
[dict writeToCodedOutputStream:output asField:field];
}
break;
//%PDDM-EXPAND FIELD_CASE(UInt32, UInt32)
// This block of code is generated, do not edit it directly.
case GPBDataTypeUInt32:
if (fieldType == GPBFieldTypeRepeated) {
uint32_t tag = field.isPackable ? GPBFieldTag(field) : 0;
GPBUInt32Array *array =
GPBGetObjectIvarWithFieldNoAutocreate(self, field);
[output writeUInt32Array:fieldNumber values:array tag:tag];
} else if (fieldType == GPBFieldTypeSingle) {
[output writeUInt32:fieldNumber
value:GPBGetMessageUInt32Field(self, field)];
} else { // fieldType == GPBFieldTypeMap
// Exact type here doesn't matter.
GPBInt32UInt32Dictionary *dict =
GPBGetObjectIvarWithFieldNoAutocreate(self, field);
[dict writeToCodedOutputStream:output asField:field];
}
break;
//%PDDM-EXPAND FIELD_CASE(UInt64, UInt64)
// This block of code is generated, do not edit it directly.
case GPBDataTypeUInt64:
if (fieldType == GPBFieldTypeRepeated) {
uint32_t tag = field.isPackable ? GPBFieldTag(field) : 0;
GPBUInt64Array *array =
GPBGetObjectIvarWithFieldNoAutocreate(self, field);
[output writeUInt64Array:fieldNumber values:array tag:tag];
} else if (fieldType == GPBFieldTypeSingle) {
[output writeUInt64:fieldNumber
value:GPBGetMessageUInt64Field(self, field)];
} else { // fieldType == GPBFieldTypeMap
// Exact type here doesn't matter.
GPBInt32UInt64Dictionary *dict =
GPBGetObjectIvarWithFieldNoAutocreate(self, field);
[dict writeToCodedOutputStream:output asField:field];
}
break;
//%PDDM-EXPAND FIELD_CASE_FULL(Enum, Int32, Enum)
// This block of code is generated, do not edit it directly.
case GPBDataTypeEnum:
if (fieldType == GPBFieldTypeRepeated) {
uint32_t tag = field.isPackable ? GPBFieldTag(field) : 0;
GPBEnumArray *array =
GPBGetObjectIvarWithFieldNoAutocreate(self, field);
[output writeEnumArray:fieldNumber values:array tag:tag];
} else if (fieldType == GPBFieldTypeSingle) {
[output writeEnum:fieldNumber
value:GPBGetMessageInt32Field(self, field)];
} else { // fieldType == GPBFieldTypeMap
// Exact type here doesn't matter.
GPBInt32EnumDictionary *dict =
GPBGetObjectIvarWithFieldNoAutocreate(self, field);
[dict writeToCodedOutputStream:output asField:field];
}
break;
//%PDDM-EXPAND FIELD_CASE2(Bytes)
// This block of code is generated, do not edit it directly.
case GPBDataTypeBytes:
if (fieldType == GPBFieldTypeRepeated) {
NSArray *array = GPBGetObjectIvarWithFieldNoAutocreate(self, field);
[output writeBytesArray:fieldNumber values:array];
} else if (fieldType == GPBFieldTypeSingle) {
// GPBGetObjectIvarWithFieldNoAutocreate() avoids doing the has check
// again.
[output writeBytes:fieldNumber
value:GPBGetObjectIvarWithFieldNoAutocreate(self, field)];
} else { // fieldType == GPBFieldTypeMap
// Exact type here doesn't matter.
id dict = GPBGetObjectIvarWithFieldNoAutocreate(self, field);
GPBDataType mapKeyDataType = field.mapKeyDataType;
if (mapKeyDataType == GPBDataTypeString) {
GPBDictionaryWriteToStreamInternalHelper(output, dict, field);
} else {
[dict writeToCodedOutputStream:output asField:field];
}
}
break;
//%PDDM-EXPAND FIELD_CASE2(String)
// This block of code is generated, do not edit it directly.
case GPBDataTypeString:
if (fieldType == GPBFieldTypeRepeated) {
NSArray *array = GPBGetObjectIvarWithFieldNoAutocreate(self, field);
[output writeStringArray:fieldNumber values:array];
} else if (fieldType == GPBFieldTypeSingle) {
// GPBGetObjectIvarWithFieldNoAutocreate() avoids doing the has check
// again.
[output writeString:fieldNumber
value:GPBGetObjectIvarWithFieldNoAutocreate(self, field)];
} else { // fieldType == GPBFieldTypeMap
// Exact type here doesn't matter.
id dict = GPBGetObjectIvarWithFieldNoAutocreate(self, field);
GPBDataType mapKeyDataType = field.mapKeyDataType;
if (mapKeyDataType == GPBDataTypeString) {
GPBDictionaryWriteToStreamInternalHelper(output, dict, field);
} else {
[dict writeToCodedOutputStream:output asField:field];
}
}
break;
//%PDDM-EXPAND FIELD_CASE2(Message)
// This block of code is generated, do not edit it directly.
case GPBDataTypeMessage:
if (fieldType == GPBFieldTypeRepeated) {
NSArray *array = GPBGetObjectIvarWithFieldNoAutocreate(self, field);
[output writeMessageArray:fieldNumber values:array];
} else if (fieldType == GPBFieldTypeSingle) {
// GPBGetObjectIvarWithFieldNoAutocreate() avoids doing the has check
// again.
[output writeMessage:fieldNumber
value:GPBGetObjectIvarWithFieldNoAutocreate(self, field)];
} else { // fieldType == GPBFieldTypeMap
// Exact type here doesn't matter.
id dict = GPBGetObjectIvarWithFieldNoAutocreate(self, field);
GPBDataType mapKeyDataType = field.mapKeyDataType;
if (mapKeyDataType == GPBDataTypeString) {
GPBDictionaryWriteToStreamInternalHelper(output, dict, field);
} else {
[dict writeToCodedOutputStream:output asField:field];
}
}
break;
//%PDDM-EXPAND FIELD_CASE2(Group)
// This block of code is generated, do not edit it directly.
case GPBDataTypeGroup:
if (fieldType == GPBFieldTypeRepeated) {
NSArray *array = GPBGetObjectIvarWithFieldNoAutocreate(self, field);
[output writeGroupArray:fieldNumber values:array];
} else if (fieldType == GPBFieldTypeSingle) {
// GPBGetObjectIvarWithFieldNoAutocreate() avoids doing the has check
// again.
[output writeGroup:fieldNumber
value:GPBGetObjectIvarWithFieldNoAutocreate(self, field)];
} else { // fieldType == GPBFieldTypeMap
// Exact type here doesn't matter.
id dict = GPBGetObjectIvarWithFieldNoAutocreate(self, field);
GPBDataType mapKeyDataType = field.mapKeyDataType;
if (mapKeyDataType == GPBDataTypeString) {
GPBDictionaryWriteToStreamInternalHelper(output, dict, field);
} else {
[dict writeToCodedOutputStream:output asField:field];
}
}
break;
//%PDDM-EXPAND-END (18 expansions)
// clang-format on
}
}
#pragma mark - Extensions
- (id)getExtension:(GPBExtensionDescriptor *)extension {
CheckExtension(self, extension);
id value = [extensionMap_ objectForKey:extension];
if (value != nil) {
return value;
}
// No default for repeated.
if (extension.isRepeated) {
return nil;
}
// Non messages get their default.
if (!GPBExtensionIsMessage(extension)) {
return extension.defaultValue;
}
// Check for an autocreated value.
os_unfair_lock_lock(&readOnlyLock_);
value = [autocreatedExtensionMap_ objectForKey:extension];
if (!value) {
// Auto create the message extensions to match normal fields.
value = CreateMessageWithAutocreatorForExtension(extension.msgClass, self, extension);
if (autocreatedExtensionMap_ == nil) {
autocreatedExtensionMap_ = [[NSMutableDictionary alloc] init];
}
// We can't simply call setExtension here because that would clear the new
// value's autocreator.
[autocreatedExtensionMap_ setObject:value forKey:extension];
[value release];
}
os_unfair_lock_unlock(&readOnlyLock_);
return value;
}
- (id)getExistingExtension:(GPBExtensionDescriptor *)extension {
// This is an internal method so we don't need to call CheckExtension().
return [extensionMap_ objectForKey:extension];
}
- (BOOL)hasExtension:(GPBExtensionDescriptor *)extension {
#if defined(DEBUG) && DEBUG
CheckExtension(self, extension);
#endif // DEBUG
return nil != [extensionMap_ objectForKey:extension];
}
- (NSArray *)extensionsCurrentlySet {
return [extensionMap_ allKeys];
}
- (void)writeExtensionsToCodedOutputStream:(GPBCodedOutputStream *)output
range:(GPBExtensionRange)range
sortedExtensions:(NSArray *)sortedExtensions {
uint32_t start = range.start;
uint32_t end = range.end;
for (GPBExtensionDescriptor *extension in sortedExtensions) {
uint32_t fieldNumber = extension.fieldNumber;
if (fieldNumber < start) {
continue;
}
if (fieldNumber >= end) {
break;
}
id value = [extensionMap_ objectForKey:extension];
GPBWriteExtensionValueToOutputStream(extension, value, output);
}
}
- (void)setExtension:(GPBExtensionDescriptor *)extension value:(id)value {
if (!value) {
[self clearExtension:extension];
return;
}
CheckExtension(self, extension);
if (extension.repeated) {
[NSException raise:NSInvalidArgumentException
format:@"Must call addExtension() for repeated types."];
}
if (extensionMap_ == nil) {
extensionMap_ = [[NSMutableDictionary alloc] init];
}
// This pointless cast is for CLANG_WARN_NULLABLE_TO_NONNULL_CONVERSION.
// Without it, the compiler complains we're passing an id nullable when
// setObject:forKey: requires a id nonnull for the value. The check for
// !value at the start of the method ensures it isn't nil, but the check
// isn't smart enough to realize that.
[extensionMap_ setObject:(id)value forKey:extension];
GPBExtensionDescriptor *descriptor = extension;
if (GPBExtensionIsMessage(descriptor) && !descriptor.isRepeated) {
GPBMessage *autocreatedValue = [[autocreatedExtensionMap_ objectForKey:extension] retain];
// Must remove from the map before calling GPBClearMessageAutocreator() so
// that GPBClearMessageAutocreator() knows its safe to clear.
[autocreatedExtensionMap_ removeObjectForKey:extension];
GPBClearMessageAutocreator(autocreatedValue);
[autocreatedValue release];
}
GPBBecomeVisibleToAutocreator(self);
}
- (void)addExtension:(GPBExtensionDescriptor *)extension value:(id)value {
CheckExtension(self, extension);
if (!extension.repeated) {
[NSException raise:NSInvalidArgumentException
format:@"Must call setExtension() for singular types."];
}
if (extensionMap_ == nil) {
extensionMap_ = [[NSMutableDictionary alloc] init];
}
NSMutableArray *list = [extensionMap_ objectForKey:extension];
if (list == nil) {
list = [NSMutableArray array];
[extensionMap_ setObject:list forKey:extension];
}
[list addObject:value];
GPBBecomeVisibleToAutocreator(self);
}
- (void)setExtension:(GPBExtensionDescriptor *)extension index:(NSUInteger)idx value:(id)value {
CheckExtension(self, extension);
if (!extension.repeated) {
[NSException raise:NSInvalidArgumentException
format:@"Must call setExtension() for singular types."];
}
if (extensionMap_ == nil) {
extensionMap_ = [[NSMutableDictionary alloc] init];
}
NSMutableArray *list = [extensionMap_ objectForKey:extension];
[list replaceObjectAtIndex:idx withObject:value];
GPBBecomeVisibleToAutocreator(self);
}
- (void)clearExtension:(GPBExtensionDescriptor *)extension {
CheckExtension(self, extension);
// Only become visible if there was actually a value to clear.
if ([extensionMap_ objectForKey:extension]) {
[extensionMap_ removeObjectForKey:extension];
GPBBecomeVisibleToAutocreator(self);
}
}
#pragma mark - mergeFrom
- (void)mergeFromData:(NSData *)data extensionRegistry:(id<GPBExtensionRegistry>)extensionRegistry {
GPBCodedInputStream *input = [[GPBCodedInputStream alloc] initWithData:data];
@try {
[self mergeFromCodedInputStream:input extensionRegistry:extensionRegistry];
[input checkLastTagWas:0];
} @finally {
[input release];
}
}
- (BOOL)mergeFromData:(NSData *)data
extensionRegistry:(nullable id<GPBExtensionRegistry>)extensionRegistry
error:(NSError **)errorPtr {
GPBCodedInputStream *input = [[GPBCodedInputStream alloc] initWithData:data];
@try {
[self mergeFromCodedInputStream:input extensionRegistry:extensionRegistry];
[input checkLastTagWas:0];
if (errorPtr) {
*errorPtr = nil;
}
} @catch (NSException *exception) {
[input release];
if (errorPtr) {
*errorPtr = ErrorFromException(exception);
}
return NO;
}
[input release];
return YES;
}
#pragma mark - Parse From Data Support
+ (instancetype)parseFromData:(NSData *)data error:(NSError **)errorPtr {
return [self parseFromData:data extensionRegistry:nil error:errorPtr];
}
+ (instancetype)parseFromData:(NSData *)data
extensionRegistry:(id<GPBExtensionRegistry>)extensionRegistry
error:(NSError **)errorPtr {
return [[[self alloc] initWithData:data extensionRegistry:extensionRegistry
error:errorPtr] autorelease];
}
+ (instancetype)parseFromCodedInputStream:(GPBCodedInputStream *)input
extensionRegistry:(id<GPBExtensionRegistry>)extensionRegistry
error:(NSError **)errorPtr {
return [[[self alloc] initWithCodedInputStream:input
extensionRegistry:extensionRegistry
error:errorPtr] autorelease];
}
#pragma mark - Parse Delimited From Data Support
+ (instancetype)parseDelimitedFromCodedInputStream:(GPBCodedInputStream *)input
extensionRegistry:(id<GPBExtensionRegistry>)extensionRegistry
error:(NSError **)errorPtr {
GPBCodedInputStreamState *state = &input->state_;
// This doesn't completely match the C++, but if the stream has nothing, just make an empty
// message.
if (GPBCodedInputStreamIsAtEnd(state)) {
return [[[self alloc] init] autorelease];
}
// Manually extract the data and parse it. If we read a varint and push a limit, that consumes
// some of the recursion buffer which isn't correct, it also can result in a change in error
// codes for attempts to parse partial data; and there are projects sensitive to that, so this
// maintains existing error flows.
// Extract the data, but in a "no copy" mode since we will immediately parse it so this NSData
// is transient.
NSData *data = nil;
@try {
data = GPBCodedInputStreamReadRetainedBytesNoCopy(state);
} @catch (NSException *exception) {
if (errorPtr) {
*errorPtr = ErrorFromException(exception);
}
return nil;
}
GPBMessage *result = [self parseFromData:data extensionRegistry:extensionRegistry error:errorPtr];
[data release];
if (result && errorPtr) {
*errorPtr = nil;
}
return result;
}
#pragma mark - Unknown Field Support
- (GPBUnknownFieldSet *)unknownFields {
return unknownFields_;
}
- (void)setUnknownFields:(GPBUnknownFieldSet *)unknownFields {
if (unknownFields != unknownFields_) {
[unknownFields_ release];
unknownFields_ = [unknownFields copy];
GPBBecomeVisibleToAutocreator(self);
}
}
- (void)parseMessageSet:(GPBCodedInputStream *)input
extensionRegistry:(id<GPBExtensionRegistry>)extensionRegistry {
uint32_t typeId = 0;
NSData *rawBytes = nil;
GPBExtensionDescriptor *extension = nil;
GPBCodedInputStreamState *state = &input->state_;
while (true) {
uint32_t tag = GPBCodedInputStreamReadTag(state);
if (tag == 0) {
break;
}
if (tag == GPBWireFormatMessageSetTypeIdTag) {
typeId = GPBCodedInputStreamReadUInt32(state);
if (typeId != 0) {
extension = [extensionRegistry extensionForDescriptor:[self descriptor] fieldNumber:typeId];
}
} else if (tag == GPBWireFormatMessageSetMessageTag) {
rawBytes = [GPBCodedInputStreamReadRetainedBytesNoCopy(state) autorelease];
} else {
if (![input skipField:tag]) {
break;
}
}
}
[input checkLastTagWas:GPBWireFormatMessageSetItemEndTag];
if (rawBytes != nil && typeId != 0) {
if (extension != nil) {
GPBCodedInputStream *newInput = [[GPBCodedInputStream alloc] initWithData:rawBytes];
@try {
ExtensionMergeFromInputStream(extension, extension.packable, newInput, extensionRegistry,
self);
} @finally {
[newInput release];
}
} else {
GPBUnknownFieldSet *unknownFields = GetOrMakeUnknownFields(self);
// rawBytes was created via a NoCopy, so it can be reusing a
// subrange of another NSData that might go out of scope as things
// unwind, so a copy is needed to ensure what is saved in the
// unknown fields stays valid.
NSData *cloned = [NSData dataWithData:rawBytes];
[unknownFields mergeMessageSetMessage:typeId data:cloned];
}
}
}
- (BOOL)parseUnknownField:(GPBCodedInputStream *)input
extensionRegistry:(id<GPBExtensionRegistry>)extensionRegistry
tag:(uint32_t)tag {
GPBWireFormat wireType = GPBWireFormatGetTagWireType(tag);
int32_t fieldNumber = GPBWireFormatGetTagFieldNumber(tag);
GPBDescriptor *descriptor = [self descriptor];
GPBExtensionDescriptor *extension = [extensionRegistry extensionForDescriptor:descriptor
fieldNumber:fieldNumber];
if (extension == nil) {
if (descriptor.wireFormat && GPBWireFormatMessageSetItemTag == tag) {
[self parseMessageSet:input extensionRegistry:extensionRegistry];
return YES;
}
} else {
if (extension.wireType == wireType) {
ExtensionMergeFromInputStream(extension, extension.packable, input, extensionRegistry, self);
return YES;
}
// Primitive, repeated types can be packed on unpacked on the wire, and are
// parsed either way.
if ([extension isRepeated] && !GPBDataTypeIsObject(extension->description_->dataType) &&
(extension.alternateWireType == wireType)) {
ExtensionMergeFromInputStream(extension, !extension.packable, input, extensionRegistry, self);
return YES;
}
}
if ([GPBUnknownFieldSet isFieldTag:tag]) {
GPBUnknownFieldSet *unknownFields = GetOrMakeUnknownFields(self);
return [unknownFields mergeFieldFrom:tag input:input];
} else {
return NO;
}
}
- (void)addUnknownMapEntry:(int32_t)fieldNum value:(NSData *)data {
GPBUnknownFieldSet *unknownFields = GetOrMakeUnknownFields(self);
[unknownFields addUnknownMapEntry:fieldNum value:data];
}
#pragma mark - MergeFromCodedInputStream Support
static void MergeSingleFieldFromCodedInputStream(GPBMessage *self, GPBFieldDescriptor *field,
GPBCodedInputStream *input,
id<GPBExtensionRegistry> extensionRegistry) {
GPBDataType fieldDataType = GPBGetFieldDataType(field);
switch (fieldDataType) {
#define CASE_SINGLE_POD(NAME, TYPE, FUNC_TYPE) \
case GPBDataType##NAME: { \
TYPE val = GPBCodedInputStreamRead##NAME(&input->state_); \
GPBSet##FUNC_TYPE##IvarWithFieldPrivate(self, field, val); \
break; \
}
#define CASE_SINGLE_OBJECT(NAME) \
case GPBDataType##NAME: { \
id val = GPBCodedInputStreamReadRetained##NAME(&input->state_); \
GPBSetRetainedObjectIvarWithFieldPrivate(self, field, val); \
break; \
}
CASE_SINGLE_POD(Bool, BOOL, Bool)
CASE_SINGLE_POD(Fixed32, uint32_t, UInt32)
CASE_SINGLE_POD(SFixed32, int32_t, Int32)
CASE_SINGLE_POD(Float, float, Float)
CASE_SINGLE_POD(Fixed64, uint64_t, UInt64)
CASE_SINGLE_POD(SFixed64, int64_t, Int64)
CASE_SINGLE_POD(Double, double, Double)
CASE_SINGLE_POD(Int32, int32_t, Int32)
CASE_SINGLE_POD(Int64, int64_t, Int64)
CASE_SINGLE_POD(SInt32, int32_t, Int32)
CASE_SINGLE_POD(SInt64, int64_t, Int64)
CASE_SINGLE_POD(UInt32, uint32_t, UInt32)
CASE_SINGLE_POD(UInt64, uint64_t, UInt64)
CASE_SINGLE_OBJECT(Bytes)
CASE_SINGLE_OBJECT(String)
#undef CASE_SINGLE_POD
#undef CASE_SINGLE_OBJECT
case GPBDataTypeMessage: {
if (GPBGetHasIvarField(self, field)) {
// GPBGetObjectIvarWithFieldNoAutocreate() avoids doing the has
// check again.
GPBMessage *message = GPBGetObjectIvarWithFieldNoAutocreate(self, field);
[input readMessage:message extensionRegistry:extensionRegistry];
} else {
GPBMessage *message = [[field.msgClass alloc] init];
GPBSetRetainedObjectIvarWithFieldPrivate(self, field, message);
[input readMessage:message extensionRegistry:extensionRegistry];
}
break;
}
case GPBDataTypeGroup: {
if (GPBGetHasIvarField(self, field)) {
// GPBGetObjectIvarWithFieldNoAutocreate() avoids doing the has
// check again.
GPBMessage *message = GPBGetObjectIvarWithFieldNoAutocreate(self, field);
[input readGroup:GPBFieldNumber(field) message:message extensionRegistry:extensionRegistry];
} else {
GPBMessage *message = [[field.msgClass alloc] init];
GPBSetRetainedObjectIvarWithFieldPrivate(self, field, message);
[input readGroup:GPBFieldNumber(field) message:message extensionRegistry:extensionRegistry];
}
break;
}
case GPBDataTypeEnum: {
int32_t val = GPBCodedInputStreamReadEnum(&input->state_);
if (!GPBFieldIsClosedEnum(field) || [field isValidEnumValue:val]) {
GPBSetInt32IvarWithFieldPrivate(self, field, val);
} else {
GPBUnknownFieldSet *unknownFields = GetOrMakeUnknownFields(self);
[unknownFields mergeVarintField:GPBFieldNumber(field) value:val];
}
}
} // switch
}
static void MergeRepeatedPackedFieldFromCodedInputStream(GPBMessage *self,
GPBFieldDescriptor *field,
GPBCodedInputStream *input) {
GPBDataType fieldDataType = GPBGetFieldDataType(field);
GPBCodedInputStreamState *state = &input->state_;
id genericArray = GetOrCreateArrayIvarWithField(self, field);
int32_t length = GPBCodedInputStreamReadInt32(state);
size_t limit = GPBCodedInputStreamPushLimit(state, length);
while (GPBCodedInputStreamBytesUntilLimit(state) > 0) {
switch (fieldDataType) {
#define CASE_REPEATED_PACKED_POD(NAME, TYPE, ARRAY_TYPE) \
case GPBDataType##NAME: { \
TYPE val = GPBCodedInputStreamRead##NAME(state); \
[(GPB##ARRAY_TYPE##Array *)genericArray addValue:val]; \
break; \
}
CASE_REPEATED_PACKED_POD(Bool, BOOL, Bool)
CASE_REPEATED_PACKED_POD(Fixed32, uint32_t, UInt32)
CASE_REPEATED_PACKED_POD(SFixed32, int32_t, Int32)
CASE_REPEATED_PACKED_POD(Float, float, Float)
CASE_REPEATED_PACKED_POD(Fixed64, uint64_t, UInt64)
CASE_REPEATED_PACKED_POD(SFixed64, int64_t, Int64)
CASE_REPEATED_PACKED_POD(Double, double, Double)
CASE_REPEATED_PACKED_POD(Int32, int32_t, Int32)
CASE_REPEATED_PACKED_POD(Int64, int64_t, Int64)
CASE_REPEATED_PACKED_POD(SInt32, int32_t, Int32)
CASE_REPEATED_PACKED_POD(SInt64, int64_t, Int64)
CASE_REPEATED_PACKED_POD(UInt32, uint32_t, UInt32)
CASE_REPEATED_PACKED_POD(UInt64, uint64_t, UInt64)
#undef CASE_REPEATED_PACKED_POD
case GPBDataTypeBytes:
case GPBDataTypeString:
case GPBDataTypeMessage:
case GPBDataTypeGroup:
NSCAssert(NO, @"Non primitive types can't be packed");
break;
case GPBDataTypeEnum: {
int32_t val = GPBCodedInputStreamReadEnum(state);
if (!GPBFieldIsClosedEnum(field) || [field isValidEnumValue:val]) {
[(GPBEnumArray *)genericArray addRawValue:val];
} else {
GPBUnknownFieldSet *unknownFields = GetOrMakeUnknownFields(self);
[unknownFields mergeVarintField:GPBFieldNumber(field) value:val];
}
break;
}
} // switch
} // while(BytesUntilLimit() > 0)
GPBCodedInputStreamPopLimit(state, limit);
}
static void MergeRepeatedNotPackedFieldFromCodedInputStream(
GPBMessage *self, GPBFieldDescriptor *field, GPBCodedInputStream *input,
id<GPBExtensionRegistry> extensionRegistry) {
GPBCodedInputStreamState *state = &input->state_;
id genericArray = GetOrCreateArrayIvarWithField(self, field);
switch (GPBGetFieldDataType(field)) {
#define CASE_REPEATED_NOT_PACKED_POD(NAME, TYPE, ARRAY_TYPE) \
case GPBDataType##NAME: { \
TYPE val = GPBCodedInputStreamRead##NAME(state); \
[(GPB##ARRAY_TYPE##Array *)genericArray addValue:val]; \
break; \
}
#define CASE_REPEATED_NOT_PACKED_OBJECT(NAME) \
case GPBDataType##NAME: { \
id val = GPBCodedInputStreamReadRetained##NAME(state); \
[(NSMutableArray *)genericArray addObject:val]; \
[val release]; \
break; \
}
CASE_REPEATED_NOT_PACKED_POD(Bool, BOOL, Bool)
CASE_REPEATED_NOT_PACKED_POD(Fixed32, uint32_t, UInt32)
CASE_REPEATED_NOT_PACKED_POD(SFixed32, int32_t, Int32)
CASE_REPEATED_NOT_PACKED_POD(Float, float, Float)
CASE_REPEATED_NOT_PACKED_POD(Fixed64, uint64_t, UInt64)
CASE_REPEATED_NOT_PACKED_POD(SFixed64, int64_t, Int64)
CASE_REPEATED_NOT_PACKED_POD(Double, double, Double)
CASE_REPEATED_NOT_PACKED_POD(Int32, int32_t, Int32)
CASE_REPEATED_NOT_PACKED_POD(Int64, int64_t, Int64)
CASE_REPEATED_NOT_PACKED_POD(SInt32, int32_t, Int32)
CASE_REPEATED_NOT_PACKED_POD(SInt64, int64_t, Int64)
CASE_REPEATED_NOT_PACKED_POD(UInt32, uint32_t, UInt32)
CASE_REPEATED_NOT_PACKED_POD(UInt64, uint64_t, UInt64)
CASE_REPEATED_NOT_PACKED_OBJECT(Bytes)
CASE_REPEATED_NOT_PACKED_OBJECT(String)
#undef CASE_REPEATED_NOT_PACKED_POD
#undef CASE_NOT_PACKED_OBJECT
case GPBDataTypeMessage: {
GPBMessage *message = [[field.msgClass alloc] init];
[(NSMutableArray *)genericArray addObject:message];
// The array will now retain message, so go ahead and release it in case
// -readMessage:extensionRegistry: throws so it won't be leaked.
[message release];
[input readMessage:message extensionRegistry:extensionRegistry];
break;
}
case GPBDataTypeGroup: {
GPBMessage *message = [[field.msgClass alloc] init];
[(NSMutableArray *)genericArray addObject:message];
// The array will now retain message, so go ahead and release it in case
// -readGroup:extensionRegistry: throws so it won't be leaked.
[message release];
[input readGroup:GPBFieldNumber(field) message:message extensionRegistry:extensionRegistry];
break;
}
case GPBDataTypeEnum: {
int32_t val = GPBCodedInputStreamReadEnum(state);
if (!GPBFieldIsClosedEnum(field) || [field isValidEnumValue:val]) {
[(GPBEnumArray *)genericArray addRawValue:val];
} else {
GPBUnknownFieldSet *unknownFields = GetOrMakeUnknownFields(self);
[unknownFields mergeVarintField:GPBFieldNumber(field) value:val];
}
break;
}
} // switch
}
- (void)mergeFromCodedInputStream:(GPBCodedInputStream *)input
extensionRegistry:(id<GPBExtensionRegistry>)extensionRegistry {
GPBDescriptor *descriptor = [self descriptor];
GPBCodedInputStreamState *state = &input->state_;
uint32_t tag = 0;
NSUInteger startingIndex = 0;
NSArray *fields = descriptor->fields_;
NSUInteger numFields = fields.count;
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];
if (GPBFieldTag(fieldDescriptor) == tag) {
GPBFieldType fieldType = fieldDescriptor.fieldType;
if (fieldType == GPBFieldTypeSingle) {
MergeSingleFieldFromCodedInputStream(self, fieldDescriptor, input, extensionRegistry);
// Well formed protos will only have a single field once, advance
// the starting index to the next field.
startingIndex += 1;
} else if (fieldType == GPBFieldTypeRepeated) {
if (fieldDescriptor.isPackable) {
MergeRepeatedPackedFieldFromCodedInputStream(self, fieldDescriptor, input);
// Well formed protos will only have a repeated field that is
// packed once, advance the starting index to the next field.
startingIndex += 1;
} else {
MergeRepeatedNotPackedFieldFromCodedInputStream(self, fieldDescriptor, input,
extensionRegistry);
}
} else { // fieldType == GPBFieldTypeMap
// GPB*Dictionary or NSDictionary, exact type doesn't matter at this
// point.
id map = GetOrCreateMapIvarWithField(self, fieldDescriptor);
[input readMapEntry:map
extensionRegistry:extensionRegistry
field:fieldDescriptor
parentMessage:self];
}
merged = YES;
break;
} else {
startingIndex += 1;
}
} // for(i < numFields)
if (!merged && (tag != 0)) {
// 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.
for (NSUInteger i = 0; i < numFields; ++i) {
if (startingIndex >= numFields) startingIndex = 0;
GPBFieldDescriptor *fieldDescriptor = fields[startingIndex];
if ((fieldDescriptor.fieldType == GPBFieldTypeRepeated) &&
!GPBFieldDataTypeIsObject(fieldDescriptor) &&
(GPBFieldAlternateTag(fieldDescriptor) == tag)) {
BOOL alternateIsPacked = !fieldDescriptor.isPackable;
if (alternateIsPacked) {
MergeRepeatedPackedFieldFromCodedInputStream(self, fieldDescriptor, input);
// Well formed protos will only have a repeated field that is
// packed once, advance the starting index to the next field.
startingIndex += 1;
} else {
MergeRepeatedNotPackedFieldFromCodedInputStream(self, fieldDescriptor, input,
extensionRegistry);
}
merged = YES;
break;
} else {
startingIndex += 1;
}
}
}
if (!merged) {
if (tag == 0) {
// zero signals EOF / limit reached
return;
} else {
if (![self parseUnknownField:input extensionRegistry:extensionRegistry tag:tag]) {
// it's an endgroup tag
return;
}
}
} // if(!merged)
} // while(YES)
}
#pragma mark - MergeFrom Support
- (void)mergeFrom:(GPBMessage *)other {
Class selfClass = [self class];
Class otherClass = [other class];
if (!([selfClass isSubclassOfClass:otherClass] || [otherClass isSubclassOfClass:selfClass])) {
[NSException raise:NSInvalidArgumentException
format:@"Classes must match %@ != %@", selfClass, otherClass];
}
// We assume something will be done and become visible.
GPBBecomeVisibleToAutocreator(self);
GPBDescriptor *descriptor = [[self class] descriptor];
for (GPBFieldDescriptor *field in descriptor->fields_) {
GPBFieldType fieldType = field.fieldType;
if (fieldType == GPBFieldTypeSingle) {
int32_t hasIndex = GPBFieldHasIndex(field);
uint32_t fieldNumber = GPBFieldNumber(field);
if (!GPBGetHasIvar(other, hasIndex, fieldNumber)) {
// Other doesn't have the field set, on to the next.
continue;
}
GPBDataType fieldDataType = GPBGetFieldDataType(field);
switch (fieldDataType) {
case GPBDataTypeBool:
GPBSetBoolIvarWithFieldPrivate(self, field, GPBGetMessageBoolField(other, field));
break;
case GPBDataTypeSFixed32:
case GPBDataTypeEnum:
case GPBDataTypeInt32:
case GPBDataTypeSInt32:
GPBSetInt32IvarWithFieldPrivate(self, field, GPBGetMessageInt32Field(other, field));
break;
case GPBDataTypeFixed32:
case GPBDataTypeUInt32:
GPBSetUInt32IvarWithFieldPrivate(self, field, GPBGetMessageUInt32Field(other, field));
break;
case GPBDataTypeSFixed64:
case GPBDataTypeInt64:
case GPBDataTypeSInt64:
GPBSetInt64IvarWithFieldPrivate(self, field, GPBGetMessageInt64Field(other, field));
break;
case GPBDataTypeFixed64:
case GPBDataTypeUInt64:
GPBSetUInt64IvarWithFieldPrivate(self, field, GPBGetMessageUInt64Field(other, field));
break;
case GPBDataTypeFloat:
GPBSetFloatIvarWithFieldPrivate(self, field, GPBGetMessageFloatField(other, field));
break;
case GPBDataTypeDouble:
GPBSetDoubleIvarWithFieldPrivate(self, field, GPBGetMessageDoubleField(other, field));
break;
case GPBDataTypeBytes:
case GPBDataTypeString: {
id otherVal = GPBGetObjectIvarWithFieldNoAutocreate(other, field);
GPBSetObjectIvarWithFieldPrivate(self, field, otherVal);
break;
}
case GPBDataTypeMessage:
case GPBDataTypeGroup: {
id otherVal = GPBGetObjectIvarWithFieldNoAutocreate(other, field);
if (GPBGetHasIvar(self, hasIndex, fieldNumber)) {
GPBMessage *message = GPBGetObjectIvarWithFieldNoAutocreate(self, field);
[message mergeFrom:otherVal];
} else {
GPBMessage *message = [otherVal copy];
GPBSetRetainedObjectIvarWithFieldPrivate(self, field, message);
}
break;
}
} // switch()
} else if (fieldType == GPBFieldTypeRepeated) {
// In the case of a list, they need to be appended, and there is no
// _hasIvar to worry about setting.
id otherArray = GPBGetObjectIvarWithFieldNoAutocreate(other, field);
if (otherArray) {
GPBDataType fieldDataType = field->description_->dataType;
if (GPBDataTypeIsObject(fieldDataType)) {
NSMutableArray *resultArray = GetOrCreateArrayIvarWithField(self, field);
[resultArray addObjectsFromArray:otherArray];
} else if (fieldDataType == GPBDataTypeEnum) {
GPBEnumArray *resultArray = GetOrCreateArrayIvarWithField(self, field);
[resultArray addRawValuesFromArray:otherArray];
} else {
// The array type doesn't matter, that all implement
// -addValuesFromArray:.
GPBInt32Array *resultArray = GetOrCreateArrayIvarWithField(self, field);
[resultArray addValuesFromArray:otherArray];
}
}
} else { // fieldType = GPBFieldTypeMap
// In the case of a map, they need to be merged, and there is no
// _hasIvar to worry about setting.
id otherDict = GPBGetObjectIvarWithFieldNoAutocreate(other, field);
if (otherDict) {
GPBDataType keyDataType = field.mapKeyDataType;
GPBDataType valueDataType = field->description_->dataType;
if (GPBDataTypeIsObject(keyDataType) && GPBDataTypeIsObject(valueDataType)) {
NSMutableDictionary *resultDict = GetOrCreateMapIvarWithField(self, field);
[resultDict addEntriesFromDictionary:otherDict];
} else if (valueDataType == GPBDataTypeEnum) {
// The exact type doesn't matter, just need to know it is a
// GPB*EnumDictionary.
GPBInt32EnumDictionary *resultDict = GetOrCreateMapIvarWithField(self, field);
[resultDict addRawEntriesFromDictionary:otherDict];
} else {
// The exact type doesn't matter, they all implement
// -addEntriesFromDictionary:.
GPBInt32Int32Dictionary *resultDict = GetOrCreateMapIvarWithField(self, field);
[resultDict addEntriesFromDictionary:otherDict];
}
}
} // if (fieldType)..else if...else
} // for(fields)
// Unknown fields.
if (!unknownFields_) {
[self setUnknownFields:other.unknownFields];
} else {
[unknownFields_ mergeUnknownFields:other.unknownFields];
}
// Extensions
if (other->extensionMap_.count == 0) {
return;
}
if (extensionMap_ == nil) {
extensionMap_ = CloneExtensionMap(other->extensionMap_, NSZoneFromPointer(self));
} else {
for (GPBExtensionDescriptor *extension in other->extensionMap_) {
id otherValue = [other->extensionMap_ objectForKey:extension];
id value = [extensionMap_ objectForKey:extension];
BOOL isMessageExtension = GPBExtensionIsMessage(extension);
if (extension.repeated) {
NSMutableArray *list = value;
if (list == nil) {
list = [[NSMutableArray alloc] init];
[extensionMap_ setObject:list forKey:extension];
[list release];
}
if (isMessageExtension) {
for (GPBMessage *otherListValue in otherValue) {
GPBMessage *copiedValue = [otherListValue copy];
[list addObject:copiedValue];
[copiedValue release];
}
} else {
[list addObjectsFromArray:otherValue];
}
} else {
if (isMessageExtension) {
if (value) {
[(GPBMessage *)value mergeFrom:(GPBMessage *)otherValue];
} else {
GPBMessage *copiedValue = [otherValue copy];
[extensionMap_ setObject:copiedValue forKey:extension];
[copiedValue release];
}
} else {
[extensionMap_ setObject:otherValue forKey:extension];
}
}
if (isMessageExtension && !extension.isRepeated) {
GPBMessage *autocreatedValue = [[autocreatedExtensionMap_ objectForKey:extension] retain];
// Must remove from the map before calling GPBClearMessageAutocreator()
// so that GPBClearMessageAutocreator() knows its safe to clear.
[autocreatedExtensionMap_ removeObjectForKey:extension];
GPBClearMessageAutocreator(autocreatedValue);
[autocreatedValue release];
}
}
}
}
#pragma mark - isEqual: & hash Support
- (BOOL)isEqual:(id)other {
if (other == self) {
return YES;
}
if (![other isKindOfClass:[GPBMessage class]]) {
return NO;
}
GPBMessage *otherMsg = other;
GPBDescriptor *descriptor = [[self class] descriptor];
if ([[otherMsg class] descriptor] != descriptor) {
return NO;
}
uint8_t *selfStorage = (uint8_t *)messageStorage_;
uint8_t *otherStorage = (uint8_t *)otherMsg->messageStorage_;
for (GPBFieldDescriptor *field in descriptor->fields_) {
if (GPBFieldIsMapOrArray(field)) {
// In the case of a list or map, there is no _hasIvar to worry about.
// NOTE: These are NSArray/GPB*Array or NSDictionary/GPB*Dictionary, but
// the type doesn't really matter as the objects all support -count and
// -isEqual:.
NSArray *resultMapOrArray = GPBGetObjectIvarWithFieldNoAutocreate(self, field);
NSArray *otherMapOrArray = GPBGetObjectIvarWithFieldNoAutocreate(other, field);
// nil and empty are equal
if (resultMapOrArray.count != 0 || otherMapOrArray.count != 0) {
if (![resultMapOrArray isEqual:otherMapOrArray]) {
return NO;
}
}
} else { // Single field
int32_t hasIndex = GPBFieldHasIndex(field);
uint32_t fieldNum = GPBFieldNumber(field);
BOOL selfHas = GPBGetHasIvar(self, hasIndex, fieldNum);
BOOL otherHas = GPBGetHasIvar(other, hasIndex, fieldNum);
if (selfHas != otherHas) {
return NO; // Differing has values, not equal.
}
if (!selfHas) {
// Same has values, was no, nothing else to check for this field.
continue;
}
// Now compare the values.
GPBDataType fieldDataType = GPBGetFieldDataType(field);
size_t fieldOffset = field->description_->offset;
switch (fieldDataType) {
case GPBDataTypeBool: {
// Bools are stored in has_bits to avoid needing explicit space in
// the storage structure.
// (the field number passed to the HasIvar helper doesn't really
// matter since the offset is never negative)
BOOL selfValue = GPBGetHasIvar(self, (int32_t)(fieldOffset), 0);
BOOL otherValue = GPBGetHasIvar(other, (int32_t)(fieldOffset), 0);
if (selfValue != otherValue) {
return NO;
}
break;
}
case GPBDataTypeSFixed32:
case GPBDataTypeInt32:
case GPBDataTypeSInt32:
case GPBDataTypeEnum:
case GPBDataTypeFixed32:
case GPBDataTypeUInt32:
case GPBDataTypeFloat: {
GPBInternalCompileAssert(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];
if (*selfValPtr != *otherValPtr) {
return NO;
}
break;
}
case GPBDataTypeSFixed64:
case GPBDataTypeInt64:
case GPBDataTypeSInt64:
case GPBDataTypeFixed64:
case GPBDataTypeUInt64:
case GPBDataTypeDouble: {
GPBInternalCompileAssert(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];
if (*selfValPtr != *otherValPtr) {
return NO;
}
break;
}
case GPBDataTypeBytes:
case GPBDataTypeString:
case GPBDataTypeMessage:
case GPBDataTypeGroup: {
// Type doesn't matter here, they all implement -isEqual:.
id *selfValPtr = (id *)&selfStorage[fieldOffset];
id *otherValPtr = (id *)&otherStorage[fieldOffset];
if (![*selfValPtr isEqual:*otherValPtr]) {
return NO;
}
break;
}
} // switch()
} // if(mapOrArray)...else
} // for(fields)
// nil and empty are equal
if (extensionMap_.count != 0 || otherMsg->extensionMap_.count != 0) {
if (![extensionMap_ isEqual:otherMsg->extensionMap_]) {
return NO;
}
}
// nil and empty are equal
GPBUnknownFieldSet *otherUnknowns = otherMsg->unknownFields_;
if ([unknownFields_ countOfFields] != 0 || [otherUnknowns countOfFields] != 0) {
if (![unknownFields_ isEqual:otherUnknowns]) {
return NO;
}
}
return YES;
}
// It is very difficult to implement a generic hash for ProtoBuf messages that
// will perform well. If you need hashing on your ProtoBufs (eg you are using
// them as dictionary keys) you will probably want to implement a ProtoBuf
// message specific hash as a category on your protobuf class. Do not make it a
// category on GPBMessage as you will conflict with this hash, and will possibly
// override hash for all generated protobufs. A good implementation of hash will
// be really fast, so we would recommend only hashing protobufs that have an
// identifier field of some kind that you can easily hash. If you implement
// hash, we would strongly recommend overriding isEqual: in your category as
// well, as the default implementation of isEqual: is extremely slow, and may
// drastically affect performance in large sets.
- (NSUInteger)hash {
GPBDescriptor *descriptor = [[self class] descriptor];
const NSUInteger prime = 19;
uint8_t *storage = (uint8_t *)messageStorage_;
// Start with the descriptor and then mix it with some instance info.
// Hopefully that will give a spread based on classes and what fields are set.
NSUInteger result = (NSUInteger)descriptor;
for (GPBFieldDescriptor *field in descriptor->fields_) {
if (GPBFieldIsMapOrArray(field)) {
// Exact type doesn't matter, just check if there are any elements.
NSArray *mapOrArray = GPBGetObjectIvarWithFieldNoAutocreate(self, field);
NSUInteger count = mapOrArray.count;
if (count) {
// NSArray/NSDictionary use count, use the field number and the count.
result = prime * result + GPBFieldNumber(field);
result = prime * result + count;
}
} else if (GPBGetHasIvarField(self, field)) {
// Just using the field number seemed simple/fast, but then a small
// message class where all the same fields are always set (to different
// things would end up all with the same hash, so pull in some data).
GPBDataType fieldDataType = GPBGetFieldDataType(field);
size_t fieldOffset = field->description_->offset;
switch (fieldDataType) {
case GPBDataTypeBool: {
// Bools are stored in has_bits to avoid needing explicit space in
// the storage structure.
// (the field number passed to the HasIvar helper doesn't really
// matter since the offset is never negative)
BOOL value = GPBGetHasIvar(self, (int32_t)(fieldOffset), 0);
result = prime * result + value;
break;
}
case GPBDataTypeSFixed32:
case GPBDataTypeInt32:
case GPBDataTypeSInt32:
case GPBDataTypeEnum:
case GPBDataTypeFixed32:
case GPBDataTypeUInt32:
case GPBDataTypeFloat: {
GPBInternalCompileAssert(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;
break;
}
case GPBDataTypeSFixed64:
case GPBDataTypeInt64:
case GPBDataTypeSInt64:
case GPBDataTypeFixed64:
case GPBDataTypeUInt64:
case GPBDataTypeDouble: {
GPBInternalCompileAssert(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);
break;
}
case GPBDataTypeBytes:
case GPBDataTypeString: {
// Type doesn't matter here, they both implement -hash:.
id *valPtr = (id *)&storage[fieldOffset];
result = prime * result + [*valPtr hash];
break;
}
case GPBDataTypeMessage:
case GPBDataTypeGroup: {
GPBMessage **valPtr = (GPBMessage **)&storage[fieldOffset];
// Could call -hash on the sub message, but that could recurse pretty
// deep; follow the lead of NSArray/NSDictionary and don't really
// recurse for hash, instead use the field number and the descriptor
// of the sub message. Yes, this could suck for a bunch of messages
// where they all only differ in the sub messages, but if you are
// using a message with sub messages for something that needs -hash,
// odds are you are also copying them as keys, and that deep copy
// will also suck.
result = prime * result + GPBFieldNumber(field);
result = prime * result + (NSUInteger)[[*valPtr class] descriptor];
break;
}
} // switch()
}
}
// Unknowns and extensions are not included.
return result;
}
#pragma mark - Description Support
- (NSString *)description {
NSString *textFormat = GPBTextFormatForMessage(self, @" ");
NSString *description =
[NSString stringWithFormat:@"<%@ %p>: {\n%@}", [self class], self, textFormat];
return description;
}
#if defined(DEBUG) && 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
- (id)debugQuickLookObject {
return GPBTextFormatForMessage(self, nil);
}
#endif // DEBUG
#pragma mark - SerializedSize
- (size_t)serializedSize {
GPBDescriptor *descriptor = [[self class] descriptor];
size_t result = 0;
// Has check is done explicitly, so GPBGetObjectIvarWithFieldNoAutocreate()
// avoids doing the has check again.
// Fields.
for (GPBFieldDescriptor *fieldDescriptor in descriptor->fields_) {
GPBFieldType fieldType = fieldDescriptor.fieldType;
GPBDataType fieldDataType = GPBGetFieldDataType(fieldDescriptor);
// Single Fields
if (fieldType == GPBFieldTypeSingle) {
BOOL selfHas = GPBGetHasIvarField(self, fieldDescriptor);
if (!selfHas) {
continue; // Nothing to do.
}
uint32_t fieldNumber = GPBFieldNumber(fieldDescriptor);
switch (fieldDataType) {
#define CASE_SINGLE_POD(NAME, TYPE, FUNC_TYPE) \
case GPBDataType##NAME: { \
TYPE fieldVal = GPBGetMessage##FUNC_TYPE##Field(self, fieldDescriptor); \
result += GPBCompute##NAME##Size(fieldNumber, fieldVal); \
break; \
}
#define CASE_SINGLE_OBJECT(NAME) \
case GPBDataType##NAME: { \
id fieldVal = GPBGetObjectIvarWithFieldNoAutocreate(self, fieldDescriptor); \
result += GPBCompute##NAME##Size(fieldNumber, fieldVal); \
break; \
}
CASE_SINGLE_POD(Bool, BOOL, Bool)
CASE_SINGLE_POD(Fixed32, uint32_t, UInt32)
CASE_SINGLE_POD(SFixed32, int32_t, Int32)
CASE_SINGLE_POD(Float, float, Float)
CASE_SINGLE_POD(Fixed64, uint64_t, UInt64)
CASE_SINGLE_POD(SFixed64, int64_t, Int64)
CASE_SINGLE_POD(Double, double, Double)
CASE_SINGLE_POD(Int32, int32_t, Int32)
CASE_SINGLE_POD(Int64, int64_t, Int64)
CASE_SINGLE_POD(SInt32, int32_t, Int32)
CASE_SINGLE_POD(SInt64, int64_t, Int64)
CASE_SINGLE_POD(UInt32, uint32_t, UInt32)
CASE_SINGLE_POD(UInt64, uint64_t, UInt64)
CASE_SINGLE_OBJECT(Bytes)
CASE_SINGLE_OBJECT(String)
CASE_SINGLE_OBJECT(Message)
CASE_SINGLE_OBJECT(Group)
CASE_SINGLE_POD(Enum, int32_t, Int32)
#undef CASE_SINGLE_POD
#undef CASE_SINGLE_OBJECT
}
// Repeated Fields
} else if (fieldType == GPBFieldTypeRepeated) {
id genericArray = GPBGetObjectIvarWithFieldNoAutocreate(self, fieldDescriptor);
NSUInteger count = [genericArray count];
if (count == 0) {
continue; // Nothing to add.
}
__block size_t dataSize = 0;
switch (fieldDataType) {
#define CASE_REPEATED_POD(NAME, TYPE, ARRAY_TYPE) CASE_REPEATED_POD_EXTRA(NAME, TYPE, ARRAY_TYPE, )
#define CASE_REPEATED_POD_EXTRA(NAME, TYPE, ARRAY_TYPE, ARRAY_ACCESSOR_NAME) \
case GPBDataType##NAME: { \
GPB##ARRAY_TYPE##Array *array = genericArray; \
[array enumerate##ARRAY_ACCESSOR_NAME## \
ValuesWithBlock:^(TYPE value, __unused NSUInteger idx, __unused BOOL * stop) { \
dataSize += GPBCompute##NAME##SizeNoTag(value); \
}]; \
break; \
}
#define CASE_REPEATED_OBJECT(NAME) \
case GPBDataType##NAME: { \
for (id value in genericArray) { \
dataSize += GPBCompute##NAME##SizeNoTag(value); \
} \
break; \
}
CASE_REPEATED_POD(Bool, BOOL, Bool)
CASE_REPEATED_POD(Fixed32, uint32_t, UInt32)
CASE_REPEATED_POD(SFixed32, int32_t, Int32)
CASE_REPEATED_POD(Float, float, Float)
CASE_REPEATED_POD(Fixed64, uint64_t, UInt64)
CASE_REPEATED_POD(SFixed64, int64_t, Int64)
CASE_REPEATED_POD(Double, double, Double)
CASE_REPEATED_POD(Int32, int32_t, Int32)
CASE_REPEATED_POD(Int64, int64_t, Int64)
CASE_REPEATED_POD(SInt32, int32_t, Int32)
CASE_REPEATED_POD(SInt64, int64_t, Int64)
CASE_REPEATED_POD(UInt32, uint32_t, UInt32)
CASE_REPEATED_POD(UInt64, uint64_t, UInt64)
CASE_REPEATED_OBJECT(Bytes)
CASE_REPEATED_OBJECT(String)
CASE_REPEATED_OBJECT(Message)
CASE_REPEATED_OBJECT(Group)
CASE_REPEATED_POD_EXTRA(Enum, int32_t, Enum, Raw)
#undef CASE_REPEATED_POD
#undef CASE_REPEATED_POD_EXTRA
#undef CASE_REPEATED_OBJECT
} // switch
result += dataSize;
size_t tagSize = GPBComputeTagSize(GPBFieldNumber(fieldDescriptor));
if (fieldDataType == GPBDataTypeGroup) {
// Groups have both a start and an end tag.
tagSize *= 2;
}
if (fieldDescriptor.isPackable) {
result += tagSize;
result += GPBComputeSizeTSizeAsInt32NoTag(dataSize);
} else {
result += count * tagSize;
}
// Map<> Fields
} else { // fieldType == GPBFieldTypeMap
if (GPBDataTypeIsObject(fieldDataType) &&
(fieldDescriptor.mapKeyDataType == GPBDataTypeString)) {
// If key type was string, then the map is an NSDictionary.
NSDictionary *map = GPBGetObjectIvarWithFieldNoAutocreate(self, fieldDescriptor);
if (map) {
result += GPBDictionaryComputeSizeInternalHelper(map, fieldDescriptor);
}
} else {
// Type will be GPB*GroupDictionary, exact type doesn't matter.
GPBInt32Int32Dictionary *map = GPBGetObjectIvarWithFieldNoAutocreate(self, fieldDescriptor);
result += [map computeSerializedSizeAsField:fieldDescriptor];
}
}
} // for(fields)
// Add any unknown fields.
if (descriptor.wireFormat) {
result += [unknownFields_ serializedSizeAsMessageSet];
} else {
result += [unknownFields_ serializedSize];
}
// Add any extensions.
for (GPBExtensionDescriptor *extension in extensionMap_) {
id value = [extensionMap_ objectForKey:extension];
result += GPBComputeExtensionSerializedSizeIncludingTag(extension, value);
}
return result;
}
#pragma mark - Resolve Methods Support
typedef struct ResolveIvarAccessorMethodResult {
IMP impToAdd;
SEL encodingSelector;
} ResolveIvarAccessorMethodResult;
// |field| can be __unsafe_unretained because they are created at startup
// and are essentially global. No need to pay for retain/release when
// they are captured in blocks.
static void ResolveIvarGet(__unsafe_unretained GPBFieldDescriptor *field,
ResolveIvarAccessorMethodResult *result) {
GPBDataType fieldDataType = GPBGetFieldDataType(field);
switch (fieldDataType) {
#define CASE_GET(NAME, TYPE, TRUE_NAME) \
case GPBDataType##NAME: { \
result->impToAdd = imp_implementationWithBlock(^(id obj) { \
return GPBGetMessage##TRUE_NAME##Field(obj, field); \
}); \
result->encodingSelector = @selector(get##NAME); \
break; \
}
#define CASE_GET_OBJECT(NAME, TYPE, TRUE_NAME) \
case GPBDataType##NAME: { \
result->impToAdd = imp_implementationWithBlock(^(id obj) { \
return GPBGetObjectIvarWithField(obj, field); \
}); \
result->encodingSelector = @selector(get##NAME); \
break; \
}
CASE_GET(Bool, BOOL, Bool)
CASE_GET(Fixed32, uint32_t, UInt32)
CASE_GET(SFixed32, int32_t, Int32)
CASE_GET(Float, float, Float)
CASE_GET(Fixed64, uint64_t, UInt64)
CASE_GET(SFixed64, int64_t, Int64)
CASE_GET(Double, double, Double)
CASE_GET(Int32, int32_t, Int32)
CASE_GET(Int64, int64_t, Int64)
CASE_GET(SInt32, int32_t, Int32)
CASE_GET(SInt64, int64_t, Int64)
CASE_GET(UInt32, uint32_t, UInt32)
CASE_GET(UInt64, uint64_t, UInt64)
CASE_GET_OBJECT(Bytes, id, Object)
CASE_GET_OBJECT(String, id, Object)
CASE_GET_OBJECT(Message, id, Object)
CASE_GET_OBJECT(Group, id, Object)
CASE_GET(Enum, int32_t, Enum)
#undef CASE_GET
}
}
// See comment about __unsafe_unretained on ResolveIvarGet.
static void ResolveIvarSet(__unsafe_unretained GPBFieldDescriptor *field,
ResolveIvarAccessorMethodResult *result) {
GPBDataType fieldDataType = GPBGetFieldDataType(field);
switch (fieldDataType) {
#define CASE_SET(NAME, TYPE, TRUE_NAME) \
case GPBDataType##NAME: { \
result->impToAdd = imp_implementationWithBlock(^(id obj, TYPE value) { \
return GPBSet##TRUE_NAME##IvarWithFieldPrivate(obj, field, value); \
}); \
result->encodingSelector = @selector(set##NAME:); \
break; \
}
#define CASE_SET_COPY(NAME) \
case GPBDataType##NAME: { \
result->impToAdd = imp_implementationWithBlock(^(id obj, id value) { \
return GPBSetRetainedObjectIvarWithFieldPrivate(obj, field, [value copy]); \
}); \
result->encodingSelector = @selector(set##NAME:); \
break; \
}
CASE_SET(Bool, BOOL, Bool)
CASE_SET(Fixed32, uint32_t, UInt32)
CASE_SET(SFixed32, int32_t, Int32)
CASE_SET(Float, float, Float)
CASE_SET(Fixed64, uint64_t, UInt64)
CASE_SET(SFixed64, int64_t, Int64)
CASE_SET(Double, double, Double)
CASE_SET(Int32, int32_t, Int32)
CASE_SET(Int64, int64_t, Int64)
CASE_SET(SInt32, int32_t, Int32)
CASE_SET(SInt64, int64_t, Int64)
CASE_SET(UInt32, uint32_t, UInt32)
CASE_SET(UInt64, uint64_t, UInt64)
CASE_SET_COPY(Bytes)
CASE_SET_COPY(String)
CASE_SET(Message, id, Object)
CASE_SET(Group, id, Object)
CASE_SET(Enum, int32_t, Enum)
#undef CASE_SET
}
}
+ (BOOL)resolveInstanceMethod:(SEL)sel {
const GPBDescriptor *descriptor = [self descriptor];
if (!descriptor) {
return [super resolveInstanceMethod:sel];
}
// NOTE: hasOrCountSel_/setHasSel_ will be NULL if the field for the given
// message should not have has support (done in GPBDescriptor.m), so there is
// no need for checks here to see if has*/setHas* are allowed.
ResolveIvarAccessorMethodResult result = {NULL, NULL};
// See comment about __unsafe_unretained on ResolveIvarGet.
for (__unsafe_unretained GPBFieldDescriptor *field in descriptor->fields_) {
BOOL isMapOrArray = GPBFieldIsMapOrArray(field);
if (!isMapOrArray) {
// Single fields.
if (sel == field->getSel_) {
ResolveIvarGet(field, &result);
break;
} else if (sel == field->setSel_) {
ResolveIvarSet(field, &result);
break;
} else if (sel == field->hasOrCountSel_) {
int32_t index = GPBFieldHasIndex(field);
uint32_t fieldNum = GPBFieldNumber(field);
result.impToAdd = imp_implementationWithBlock(^(id obj) {
return GPBGetHasIvar(obj, index, fieldNum);
});
result.encodingSelector = @selector(getBool);
break;
} else if (sel == field->setHasSel_) {
result.impToAdd = imp_implementationWithBlock(^(id obj, BOOL value) {
if (value) {
[NSException raise:NSInvalidArgumentException
format:@"%@: %@ can only be set to NO (to clear field).", [obj class],
NSStringFromSelector(field->setHasSel_)];
}
GPBClearMessageField(obj, field);
});
result.encodingSelector = @selector(setBool:);
break;
} else {
GPBOneofDescriptor *oneof = field->containingOneof_;
if (oneof && (sel == oneof->caseSel_)) {
int32_t index = GPBFieldHasIndex(field);
result.impToAdd = imp_implementationWithBlock(^(id obj) {
return GPBGetHasOneof(obj, index);
});
result.encodingSelector = @selector(getEnum);
break;
}
}
} else {
// map<>/repeated fields.
if (sel == field->getSel_) {
if (field.fieldType == GPBFieldTypeRepeated) {
result.impToAdd = imp_implementationWithBlock(^(id obj) {
return GetArrayIvarWithField(obj, field);
});
} else {
result.impToAdd = imp_implementationWithBlock(^(id obj) {
return GetMapIvarWithField(obj, field);
});
}
result.encodingSelector = @selector(getArray);
break;
} else if (sel == field->setSel_) {
// Local for syntax so the block can directly capture it and not the
// full lookup.
result.impToAdd = imp_implementationWithBlock(^(id obj, id value) {
GPBSetObjectIvarWithFieldPrivate(obj, field, value);
});
result.encodingSelector = @selector(setArray:);
break;
} else if (sel == field->hasOrCountSel_) {
result.impToAdd = imp_implementationWithBlock(^(id obj) {
// Type doesn't matter, all *Array and *Dictionary types support
// -count.
NSArray *arrayOrMap = GPBGetObjectIvarWithFieldNoAutocreate(obj, field);
return [arrayOrMap count];
});
result.encodingSelector = @selector(getArrayCount);
break;
}
}
}
if (result.impToAdd) {
const char *encoding = GPBMessageEncodingForSelector(result.encodingSelector, YES);
Class msgClass = descriptor.messageClass;
BOOL methodAdded = class_addMethod(msgClass, sel, result.impToAdd, encoding);
// class_addMethod() is documented as also failing if the method was already
// added; so we check if the method is already there and return success so
// the method dispatch will still happen. Why would it already be added?
// Two threads could cause the same method to be bound at the same time,
// but only one will actually bind it; the other still needs to return true
// so things will dispatch.
if (!methodAdded) {
methodAdded = GPBClassHasSel(msgClass, sel);
}
return methodAdded;
}
return [super resolveInstanceMethod:sel];
}
+ (BOOL)resolveClassMethod:(SEL)sel {
// Extensions scoped to a Message and looked up via class methods.
if (GPBResolveExtensionClassMethod(self, sel)) {
return YES;
}
return [super resolveClassMethod:sel];
}
#pragma mark - NSCoding Support
+ (BOOL)supportsSecureCoding {
return YES;
}
- (instancetype)initWithCoder:(NSCoder *)aDecoder {
self = [self init];
if (self) {
NSData *data = [aDecoder decodeObjectOfClass:[NSData class] forKey:kGPBDataCoderKey];
if (data.length) {
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
[self mergeFromData:data extensionRegistry:nil];
#pragma clang diagnostic pop
}
}
return self;
}
- (void)encodeWithCoder:(NSCoder *)aCoder {
#if defined(DEBUG) && DEBUG
if (extensionMap_.count) {
// Hint to go along with the docs on GPBMessage about this.
//
// Note: This is incomplete, in that it only checked the "root" message,
// if a sub message in a field has extensions, the issue still exists. A
// recursive check could be done here (like the work in
// GPBMessageDropUnknownFieldsRecursively()), but that has the potential to
// be expensive and could slow down serialization in DEBUG enough to cause
// developers other problems.
NSLog(@"Warning: writing out a GPBMessage (%@) via NSCoding and it"
@" has %ld extensions; when read back in, those fields will be"
@" in the unknownFields property instead.",
[self class], (long)extensionMap_.count);
}
#endif
NSData *data = [self data];
if (data.length) {
[aCoder encodeObject:data forKey:kGPBDataCoderKey];
}
}
#pragma mark - KVC Support
+ (BOOL)accessInstanceVariablesDirectly {
// Make sure KVC doesn't use instance variables.
return NO;
}
@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
return GetOrCreateArrayIvarWithField(self, field);
}
// 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
return GetOrCreateMapIvarWithField(self, field);
}
id GPBGetObjectIvarWithField(GPBMessage *self, GPBFieldDescriptor *field) {
NSCAssert(!GPBFieldIsMapOrArray(field), @"Shouldn't get here");
if (!GPBFieldDataTypeIsMessage(field)) {
if (GPBGetHasIvarField(self, field)) {
uint8_t *storage = (uint8_t *)self->messageStorage_;
id *typePtr = (id *)&storage[field->description_->offset];
return *typePtr;
}
// Not set...non messages (string/data), get their default.
return field.defaultValue.valueMessage;
}
uint8_t *storage = (uint8_t *)self->messageStorage_;
_Atomic(id) *typePtr = (_Atomic(id) *)&storage[field->description_->offset];
id msg = atomic_load(typePtr);
if (msg) {
return msg;
}
id expected = nil;
id autocreated = GPBCreateMessageWithAutocreator(field.msgClass, self, field);
if (atomic_compare_exchange_strong(typePtr, &expected, autocreated)) {
// Value was set, return it.
return autocreated;
}
// Some other thread set it, release the one created and return what got set.
GPBClearMessageAutocreator(autocreated);
[autocreated release];
return expected;
}
#pragma clang diagnostic pop