| // Protocol Buffers - Google's data interchange format |
| // Copyright 2024 Google Inc. All rights reserved. |
| // |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file or at |
| // https://developers.google.com/open-source/licenses/bsd |
| |
| #import "GPBUnknownFields.h" |
| |
| #import <Foundation/Foundation.h> |
| |
| #import "GPBCodedInputStream_PackagePrivate.h" |
| #import "GPBCodedOutputStream.h" |
| #import "GPBCodedOutputStream_PackagePrivate.h" |
| #import "GPBMessage.h" |
| #import "GPBUnknownField.h" |
| #import "GPBUnknownFieldSet_PackagePrivate.h" |
| #import "GPBUnknownField_PackagePrivate.h" |
| #import "GPBUnknownFields_PackagePrivate.h" |
| #import "GPBWireFormat.h" |
| |
| #define CHECK_FIELD_NUMBER(number) \ |
| if (number <= 0) { \ |
| [NSException raise:NSInvalidArgumentException format:@"Not a valid field number."]; \ |
| } |
| |
| // TODO: Consider using on other functions to reduce bloat when |
| // some compiler optimizations are enabled. |
| #define GPB_NOINLINE __attribute__((noinline)) |
| |
| @interface GPBUnknownFields () { |
| @package |
| NSMutableArray<GPBUnknownField *> *fields_; |
| } |
| @end |
| |
| // 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" |
| |
| GPB_NOINLINE |
| static size_t ComputeSerializeSize(GPBUnknownFields *_Nonnull self) { |
| size_t result = 0; |
| for (GPBUnknownField *field in self->fields_) { |
| uint32_t fieldNumber = field->number_; |
| switch (field->type_) { |
| case GPBUnknownFieldTypeVarint: |
| result += GPBComputeUInt64Size(fieldNumber, field->storage_.intValue); |
| break; |
| case GPBUnknownFieldTypeFixed32: |
| result += GPBComputeFixed32Size(fieldNumber, (uint32_t)field->storage_.intValue); |
| break; |
| case GPBUnknownFieldTypeFixed64: |
| result += GPBComputeFixed64Size(fieldNumber, field->storage_.intValue); |
| break; |
| case GPBUnknownFieldTypeLengthDelimited: |
| result += GPBComputeBytesSize(fieldNumber, field->storage_.lengthDelimited); |
| break; |
| case GPBUnknownFieldTypeGroup: |
| result += |
| (GPBComputeTagSize(fieldNumber) * 2) + ComputeSerializeSize(field->storage_.group); |
| break; |
| case GPBUnknownFieldTypeLegacy: |
| #if defined(DEBUG) && DEBUG |
| NSCAssert(NO, @"Internal error within the library"); |
| #endif |
| break; |
| } |
| } |
| return result; |
| } |
| |
| GPB_NOINLINE |
| static void WriteToCoddedOutputStream(GPBUnknownFields *_Nonnull self, |
| GPBCodedOutputStream *_Nonnull output) { |
| for (GPBUnknownField *field in self->fields_) { |
| uint32_t fieldNumber = field->number_; |
| switch (field->type_) { |
| case GPBUnknownFieldTypeVarint: |
| [output writeUInt64:fieldNumber value:field->storage_.intValue]; |
| break; |
| case GPBUnknownFieldTypeFixed32: |
| [output writeFixed32:fieldNumber value:(uint32_t)field->storage_.intValue]; |
| break; |
| case GPBUnknownFieldTypeFixed64: |
| [output writeFixed64:fieldNumber value:field->storage_.intValue]; |
| break; |
| case GPBUnknownFieldTypeLengthDelimited: |
| [output writeBytes:fieldNumber value:field->storage_.lengthDelimited]; |
| break; |
| case GPBUnknownFieldTypeGroup: |
| [output writeRawVarint32:GPBWireFormatMakeTag(fieldNumber, GPBWireFormatStartGroup)]; |
| WriteToCoddedOutputStream(field->storage_.group, output); |
| [output writeRawVarint32:GPBWireFormatMakeTag(fieldNumber, GPBWireFormatEndGroup)]; |
| break; |
| case GPBUnknownFieldTypeLegacy: |
| #if defined(DEBUG) && DEBUG |
| NSCAssert(NO, @"Internal error within the library"); |
| #endif |
| break; |
| } |
| } |
| } |
| |
| GPB_NOINLINE |
| static BOOL MergeFromInputStream(GPBUnknownFields *self, GPBCodedInputStream *input, |
| uint32_t endTag) { |
| #if defined(DEBUG) && DEBUG |
| NSCAssert(endTag == 0 || GPBWireFormatGetTagWireType(endTag) == GPBWireFormatEndGroup, |
| @"Internal error:Invalid end tag: %u", endTag); |
| #endif |
| GPBCodedInputStreamState *state = &input->state_; |
| NSMutableArray<GPBUnknownField *> *fields = self->fields_; |
| @try { |
| while (YES) { |
| uint32_t tag = GPBCodedInputStreamReadTag(state); |
| if (tag == endTag) { |
| return YES; |
| } |
| if (tag == 0) { |
| // Reached end of input without finding the end tag. |
| return NO; |
| } |
| GPBWireFormat wireType = GPBWireFormatGetTagWireType(tag); |
| int32_t fieldNumber = GPBWireFormatGetTagFieldNumber(tag); |
| switch (wireType) { |
| case GPBWireFormatVarint: { |
| uint64_t value = GPBCodedInputStreamReadInt64(state); |
| GPBUnknownField *field = [[GPBUnknownField alloc] initWithNumber:fieldNumber |
| varint:value]; |
| [fields addObject:field]; |
| [field release]; |
| break; |
| } |
| case GPBWireFormatFixed32: { |
| uint32_t value = GPBCodedInputStreamReadFixed32(state); |
| GPBUnknownField *field = [[GPBUnknownField alloc] initWithNumber:fieldNumber |
| fixed32:value]; |
| [fields addObject:field]; |
| [field release]; |
| break; |
| } |
| case GPBWireFormatFixed64: { |
| uint64_t value = GPBCodedInputStreamReadFixed64(state); |
| GPBUnknownField *field = [[GPBUnknownField alloc] initWithNumber:fieldNumber |
| fixed64:value]; |
| [fields addObject:field]; |
| [field release]; |
| break; |
| } |
| case GPBWireFormatLengthDelimited: { |
| NSData *data = GPBCodedInputStreamReadRetainedBytes(state); |
| GPBUnknownField *field = [[GPBUnknownField alloc] initWithNumber:fieldNumber |
| lengthDelimited:data]; |
| [fields addObject:field]; |
| [field release]; |
| [data release]; |
| break; |
| } |
| case GPBWireFormatStartGroup: { |
| GPBUnknownFields *group = [[GPBUnknownFields alloc] init]; |
| GPBUnknownField *field = [[GPBUnknownField alloc] initWithNumber:fieldNumber group:group]; |
| [fields addObject:field]; |
| [field release]; |
| [group release]; // Still will be held in the field/fields. |
| uint32_t endGroupTag = GPBWireFormatMakeTag(fieldNumber, GPBWireFormatEndGroup); |
| if (MergeFromInputStream(group, input, endGroupTag)) { |
| GPBCodedInputStreamCheckLastTagWas(state, endGroupTag); |
| } else { |
| [NSException |
| raise:NSInternalInconsistencyException |
| format:@"Internal error: Unknown field data for nested group was malformed."]; |
| } |
| break; |
| } |
| case GPBWireFormatEndGroup: |
| [NSException raise:NSInternalInconsistencyException |
| format:@"Unexpected end group tag: %u", tag]; |
| break; |
| } |
| } |
| } @catch (NSException *exception) { |
| #if defined(DEBUG) && DEBUG |
| NSLog(@"%@: Internal exception while parsing unknown data, this shouldn't happen!: %@", |
| [self class], exception); |
| #endif |
| } |
| } |
| |
| @implementation GPBUnknownFields |
| |
| - (instancetype)initFromMessage:(nonnull GPBMessage *)message { |
| self = [super init]; |
| if (self) { |
| fields_ = [[NSMutableArray alloc] init]; |
| // TODO: b/349146447 - Move off the legacy class and directly to the data once Message is |
| // updated. |
| GPBUnknownFieldSet *legacyUnknownFields = [message unknownFields]; |
| if (legacyUnknownFields) { |
| GPBCodedInputStream *input = |
| [[GPBCodedInputStream alloc] initWithData:[legacyUnknownFields data]]; |
| // Parse until the end of the data (tag will be zero). |
| if (!MergeFromInputStream(self, input, 0)) { |
| [input release]; |
| [self release]; |
| [NSException raise:NSInternalInconsistencyException |
| format:@"Internal error: Unknown field data from message was malformed."]; |
| } |
| [input release]; |
| } |
| } |
| return self; |
| } |
| |
| - (instancetype)init { |
| self = [super init]; |
| if (self) { |
| fields_ = [[NSMutableArray alloc] init]; |
| } |
| return self; |
| } |
| |
| - (id)copyWithZone:(NSZone *)zone { |
| GPBUnknownFields *copy = [[GPBUnknownFields alloc] init]; |
| // Fields are r/o in this api, so just copy the array. |
| copy->fields_ = [fields_ mutableCopyWithZone:zone]; |
| return copy; |
| } |
| |
| - (void)dealloc { |
| [fields_ release]; |
| [super dealloc]; |
| } |
| |
| - (BOOL)isEqual:(id)object { |
| if (![object isKindOfClass:[GPBUnknownFields class]]) { |
| return NO; |
| } |
| GPBUnknownFields *ufs = (GPBUnknownFields *)object; |
| // The type is defined with order of fields mattering, so just compare the arrays. |
| return [fields_ isEqual:ufs->fields_]; |
| } |
| |
| - (NSUInteger)hash { |
| return [fields_ hash]; |
| } |
| |
| - (NSString *)description { |
| return [NSString |
| stringWithFormat:@"<%@ %p>: %lu fields", [self class], self, (unsigned long)fields_.count]; |
| } |
| |
| #pragma mark - Public Methods |
| |
| - (NSUInteger)count { |
| return fields_.count; |
| } |
| |
| - (BOOL)empty { |
| return fields_.count == 0; |
| } |
| |
| - (void)clear { |
| [fields_ removeAllObjects]; |
| } |
| |
| - (NSArray<GPBUnknownField *> *)fields:(int32_t)fieldNumber { |
| CHECK_FIELD_NUMBER(fieldNumber); |
| NSMutableArray<GPBUnknownField *> *result = [[NSMutableArray alloc] init]; |
| for (GPBUnknownField *field in fields_) { |
| if (field.number == fieldNumber) { |
| [result addObject:field]; |
| } |
| } |
| if (result.count == 0) { |
| [result release]; |
| return nil; |
| } |
| return [result autorelease]; |
| } |
| |
| - (void)addFieldNumber:(int32_t)fieldNumber varint:(uint64_t)value { |
| CHECK_FIELD_NUMBER(fieldNumber); |
| GPBUnknownField *field = [[GPBUnknownField alloc] initWithNumber:fieldNumber varint:value]; |
| [fields_ addObject:field]; |
| [field release]; |
| } |
| |
| - (void)addFieldNumber:(int32_t)fieldNumber fixed32:(uint32_t)value { |
| CHECK_FIELD_NUMBER(fieldNumber); |
| GPBUnknownField *field = [[GPBUnknownField alloc] initWithNumber:fieldNumber fixed32:value]; |
| [fields_ addObject:field]; |
| [field release]; |
| } |
| |
| - (void)addFieldNumber:(int32_t)fieldNumber fixed64:(uint64_t)value { |
| CHECK_FIELD_NUMBER(fieldNumber); |
| GPBUnknownField *field = [[GPBUnknownField alloc] initWithNumber:fieldNumber fixed64:value]; |
| [fields_ addObject:field]; |
| [field release]; |
| } |
| |
| - (void)addFieldNumber:(int32_t)fieldNumber lengthDelimited:(NSData *)value { |
| CHECK_FIELD_NUMBER(fieldNumber); |
| GPBUnknownField *field = [[GPBUnknownField alloc] initWithNumber:fieldNumber |
| lengthDelimited:value]; |
| [fields_ addObject:field]; |
| [field release]; |
| } |
| |
| - (GPBUnknownFields *)addGroupWithFieldNumber:(int32_t)fieldNumber { |
| CHECK_FIELD_NUMBER(fieldNumber); |
| GPBUnknownFields *group = [[GPBUnknownFields alloc] init]; |
| GPBUnknownField *field = [[GPBUnknownField alloc] initWithNumber:fieldNumber group:group]; |
| [fields_ addObject:field]; |
| [field release]; |
| return [group autorelease]; |
| } |
| |
| #pragma mark - NSFastEnumeration protocol |
| |
| - (NSUInteger)countByEnumeratingWithState:(NSFastEnumerationState *)state |
| objects:(__unsafe_unretained id _Nonnull *)stackbuf |
| count:(NSUInteger)len { |
| return [fields_ countByEnumeratingWithState:state objects:stackbuf count:len]; |
| } |
| |
| #pragma mark - Internal Methods |
| |
| - (NSData *)serializeAsData { |
| if (fields_.count == 0) { |
| return [NSData data]; |
| } |
| size_t expectedSize = ComputeSerializeSize(self); |
| NSMutableData *data = [NSMutableData dataWithLength:expectedSize]; |
| GPBCodedOutputStream *stream = [[GPBCodedOutputStream alloc] initWithData:data]; |
| @try { |
| WriteToCoddedOutputStream(self, stream); |
| [stream flush]; |
| } @catch (NSException *exception) { |
| #if defined(DEBUG) && DEBUG |
| NSLog(@"Internal exception while building GPBUnknownFields serialized data: %@", exception); |
| #endif |
| } |
| #if defined(DEBUG) && DEBUG |
| NSAssert([stream bytesWritten] == expectedSize, @"Internal error within the library"); |
| #endif |
| [stream release]; |
| return data; |
| } |
| |
| @end |
| |
| @implementation GPBUnknownFields (AccessHelpers) |
| |
| - (BOOL)getFirst:(int32_t)fieldNumber varint:(nonnull uint64_t *)outValue { |
| CHECK_FIELD_NUMBER(fieldNumber); |
| for (GPBUnknownField *field in fields_) { |
| if (field.number == fieldNumber && field.type == GPBUnknownFieldTypeVarint) { |
| *outValue = field.varint; |
| return YES; |
| } |
| } |
| return NO; |
| } |
| |
| - (BOOL)getFirst:(int32_t)fieldNumber fixed32:(nonnull uint32_t *)outValue { |
| CHECK_FIELD_NUMBER(fieldNumber); |
| for (GPBUnknownField *field in fields_) { |
| if (field.number == fieldNumber && field.type == GPBUnknownFieldTypeFixed32) { |
| *outValue = field.fixed32; |
| return YES; |
| } |
| } |
| return NO; |
| } |
| |
| - (BOOL)getFirst:(int32_t)fieldNumber fixed64:(nonnull uint64_t *)outValue { |
| CHECK_FIELD_NUMBER(fieldNumber); |
| for (GPBUnknownField *field in fields_) { |
| if (field.number == fieldNumber && field.type == GPBUnknownFieldTypeFixed64) { |
| *outValue = field.fixed64; |
| return YES; |
| } |
| } |
| return NO; |
| } |
| |
| - (nullable NSData *)firstLengthDelimited:(int32_t)fieldNumber { |
| CHECK_FIELD_NUMBER(fieldNumber); |
| for (GPBUnknownField *field in fields_) { |
| if (field.number == fieldNumber && field.type == GPBUnknownFieldTypeLengthDelimited) { |
| return field.lengthDelimited; |
| } |
| } |
| return nil; |
| } |
| |
| - (nullable GPBUnknownFields *)firstGroup:(int32_t)fieldNumber { |
| CHECK_FIELD_NUMBER(fieldNumber); |
| for (GPBUnknownField *field in fields_) { |
| if (field.number == fieldNumber && field.type == GPBUnknownFieldTypeGroup) { |
| return field.group; |
| } |
| } |
| return nil; |
| } |
| |
| @end |
| |
| #pragma clang diagnostic pop |
