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-rw-r--r--objectivec/GPBUnknownFieldSet.m432
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diff --git a/objectivec/GPBUnknownFieldSet.m b/objectivec/GPBUnknownFieldSet.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 "GPBUnknownFieldSet_PackagePrivate.h"
-
-#import "GPBCodedInputStream_PackagePrivate.h"
-#import "GPBCodedOutputStream.h"
-#import "GPBUnknownField_PackagePrivate.h"
-#import "GPBUtilities.h"
-#import "GPBWireFormat.h"
-
-#pragma mark CFDictionaryKeyCallBacks
-
-// We use a custom dictionary here because our keys are numbers and
-// conversion back and forth from NSNumber was costing us performance.
-// If/when we move to C++ this could be done using a std::map and some
-// careful retain/release calls.
-
-static const void *GPBUnknownFieldSetKeyRetain(CFAllocatorRef allocator,
- const void *value) {
-#pragma unused(allocator)
- return value;
-}
-
-static void GPBUnknownFieldSetKeyRelease(CFAllocatorRef allocator,
- const void *value) {
-#pragma unused(allocator)
-#pragma unused(value)
-}
-
-static CFStringRef GPBUnknownFieldSetCopyKeyDescription(const void *value) {
- return CFStringCreateWithFormat(kCFAllocatorDefault, NULL, CFSTR("%d"),
- (int)value);
-}
-
-static Boolean GPBUnknownFieldSetKeyEqual(const void *value1,
- const void *value2) {
- return value1 == value2;
-}
-
-static CFHashCode GPBUnknownFieldSetKeyHash(const void *value) {
- return (CFHashCode)value;
-}
-
-#pragma mark Helpers
-
-static void checkNumber(int32_t number) {
- if (number == 0) {
- [NSException raise:NSInvalidArgumentException
- format:@"Zero is not a valid field number."];
- }
-}
-
-@implementation GPBUnknownFieldSet {
- @package
- CFMutableDictionaryRef fields_;
-}
-
-static void CopyWorker(const void *key, const void *value, void *context) {
-#pragma unused(key)
- GPBUnknownField *field = value;
- GPBUnknownFieldSet *result = context;
-
- GPBUnknownField *copied = [field copy];
- [result addField:copied];
- [copied release];
-}
-
-// 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"
-
-- (id)copyWithZone:(NSZone *)zone {
- GPBUnknownFieldSet *result = [[GPBUnknownFieldSet allocWithZone:zone] init];
- if (fields_) {
- CFDictionaryApplyFunction(fields_, CopyWorker, result);
- }
- return result;
-}
-
-- (void)dealloc {
- if (fields_) {
- CFRelease(fields_);
- }
- [super dealloc];
-}
-
-- (BOOL)isEqual:(id)object {
- BOOL equal = NO;
- if ([object isKindOfClass:[GPBUnknownFieldSet class]]) {
- GPBUnknownFieldSet *set = (GPBUnknownFieldSet *)object;
- if ((fields_ == NULL) && (set->fields_ == NULL)) {
- equal = YES;
- } else if ((fields_ != NULL) && (set->fields_ != NULL)) {
- equal = CFEqual(fields_, set->fields_);
- }
- }
- return equal;
-}
-
-- (NSUInteger)hash {
- // Return the hash of the fields dictionary (or just some value).
- if (fields_) {
- return CFHash(fields_);
- }
- return (NSUInteger)[GPBUnknownFieldSet class];
-}
-
-#pragma mark - Public Methods
-
-- (BOOL)hasField:(int32_t)number {
- ssize_t key = number;
- return fields_ ? (CFDictionaryGetValue(fields_, (void *)key) != nil) : NO;
-}
-
-- (GPBUnknownField *)getField:(int32_t)number {
- ssize_t key = number;
- GPBUnknownField *result =
- fields_ ? CFDictionaryGetValue(fields_, (void *)key) : nil;
- return result;
-}
-
-- (NSUInteger)countOfFields {
- return fields_ ? CFDictionaryGetCount(fields_) : 0;
-}
-
-- (NSArray *)sortedFields {
- if (!fields_) return [NSArray array];
- size_t count = CFDictionaryGetCount(fields_);
- ssize_t keys[count];
- GPBUnknownField *values[count];
- CFDictionaryGetKeysAndValues(fields_, (const void **)keys,
- (const void **)values);
- struct GPBFieldPair {
- ssize_t key;
- GPBUnknownField *value;
- } pairs[count];
- for (size_t i = 0; i < count; ++i) {
- pairs[i].key = keys[i];
- pairs[i].value = values[i];
- };
- qsort_b(pairs, count, sizeof(struct GPBFieldPair),
- ^(const void *first, const void *second) {
- const struct GPBFieldPair *a = first;
- const struct GPBFieldPair *b = second;
- return (a->key > b->key) ? 1 : ((a->key == b->key) ? 0 : -1);
- });
- for (size_t i = 0; i < count; ++i) {
- values[i] = pairs[i].value;
- };
- return [NSArray arrayWithObjects:values count:count];
-}
-
-#pragma mark - Internal Methods
-
-- (void)writeToCodedOutputStream:(GPBCodedOutputStream *)output {
- if (!fields_) return;
- size_t count = CFDictionaryGetCount(fields_);
- ssize_t keys[count];
- GPBUnknownField *values[count];
- CFDictionaryGetKeysAndValues(fields_, (const void **)keys,
- (const void **)values);
- if (count > 1) {
- struct GPBFieldPair {
- ssize_t key;
- GPBUnknownField *value;
- } pairs[count];
-
- for (size_t i = 0; i < count; ++i) {
- pairs[i].key = keys[i];
- pairs[i].value = values[i];
- };
- qsort_b(pairs, count, sizeof(struct GPBFieldPair),
- ^(const void *first, const void *second) {
- const struct GPBFieldPair *a = first;
- const struct GPBFieldPair *b = second;
- return (a->key > b->key) ? 1 : ((a->key == b->key) ? 0 : -1);
- });
- for (size_t i = 0; i < count; ++i) {
- GPBUnknownField *value = pairs[i].value;
- [value writeToOutput:output];
- }
- } else {
- [values[0] writeToOutput:output];
- }
-}
-
-- (NSString *)description {
- NSMutableString *description = [NSMutableString
- stringWithFormat:@"<%@ %p>: TextFormat: {\n", [self class], self];
- NSString *textFormat = GPBTextFormatForUnknownFieldSet(self, @" ");
- [description appendString:textFormat];
- [description appendString:@"}"];
- return description;
-}
-
-static void GPBUnknownFieldSetSerializedSize(const void *key, const void *value,
- void *context) {
-#pragma unused(key)
- GPBUnknownField *field = value;
- size_t *result = context;
- *result += [field serializedSize];
-}
-
-- (size_t)serializedSize {
- size_t result = 0;
- if (fields_) {
- CFDictionaryApplyFunction(fields_, GPBUnknownFieldSetSerializedSize,
- &result);
- }
- return result;
-}
-
-static void GPBUnknownFieldSetWriteAsMessageSetTo(const void *key,
- const void *value,
- void *context) {
-#pragma unused(key)
- GPBUnknownField *field = value;
- GPBCodedOutputStream *output = context;
- [field writeAsMessageSetExtensionToOutput:output];
-}
-
-- (void)writeAsMessageSetTo:(GPBCodedOutputStream *)output {
- if (fields_) {
- CFDictionaryApplyFunction(fields_, GPBUnknownFieldSetWriteAsMessageSetTo,
- output);
- }
-}
-
-static void GPBUnknownFieldSetSerializedSizeAsMessageSet(const void *key,
- const void *value,
- void *context) {
-#pragma unused(key)
- GPBUnknownField *field = value;
- size_t *result = context;
- *result += [field serializedSizeAsMessageSetExtension];
-}
-
-- (size_t)serializedSizeAsMessageSet {
- size_t result = 0;
- if (fields_) {
- CFDictionaryApplyFunction(
- fields_, GPBUnknownFieldSetSerializedSizeAsMessageSet, &result);
- }
- return result;
-}
-
-- (NSData *)data {
- NSMutableData *data = [NSMutableData dataWithLength:self.serializedSize];
- GPBCodedOutputStream *output =
- [[GPBCodedOutputStream alloc] initWithData:data];
- [self writeToCodedOutputStream:output];
- [output release];
- return data;
-}
-
-+ (BOOL)isFieldTag:(int32_t)tag {
- return GPBWireFormatGetTagWireType(tag) != GPBWireFormatEndGroup;
-}
-
-- (void)addField:(GPBUnknownField *)field {
- int32_t number = [field number];
- checkNumber(number);
- if (!fields_) {
- CFDictionaryKeyCallBacks keyCallBacks = {
- // See description above for reason for using custom dictionary.
- 0, GPBUnknownFieldSetKeyRetain, GPBUnknownFieldSetKeyRelease,
- GPBUnknownFieldSetCopyKeyDescription, GPBUnknownFieldSetKeyEqual,
- GPBUnknownFieldSetKeyHash,
- };
- fields_ = CFDictionaryCreateMutable(kCFAllocatorDefault, 0, &keyCallBacks,
- &kCFTypeDictionaryValueCallBacks);
- }
- ssize_t key = number;
- CFDictionarySetValue(fields_, (const void *)key, field);
-}
-
-- (GPBUnknownField *)mutableFieldForNumber:(int32_t)number create:(BOOL)create {
- ssize_t key = number;
- GPBUnknownField *existing =
- fields_ ? CFDictionaryGetValue(fields_, (const void *)key) : nil;
- if (!existing && create) {
- existing = [[GPBUnknownField alloc] initWithNumber:number];
- // This retains existing.
- [self addField:existing];
- [existing release];
- }
- return existing;
-}
-
-static void GPBUnknownFieldSetMergeUnknownFields(const void *key,
- const void *value,
- void *context) {
-#pragma unused(key)
- GPBUnknownField *field = value;
- GPBUnknownFieldSet *self = context;
-
- int32_t number = [field number];
- checkNumber(number);
- GPBUnknownField *oldField = [self mutableFieldForNumber:number create:NO];
- if (oldField) {
- [oldField mergeFromField:field];
- } else {
- // Merge only comes from GPBMessage's mergeFrom:, so it means we are on
- // mutable message and are an mutable instance, so make sure we need
- // mutable fields.
- GPBUnknownField *fieldCopy = [field copy];
- [self addField:fieldCopy];
- [fieldCopy release];
- }
-}
-
-- (void)mergeUnknownFields:(GPBUnknownFieldSet *)other {
- if (other && other->fields_) {
- CFDictionaryApplyFunction(other->fields_,
- GPBUnknownFieldSetMergeUnknownFields, self);
- }
-}
-
-- (void)mergeFromData:(NSData *)data {
- GPBCodedInputStream *input = [[GPBCodedInputStream alloc] initWithData:data];
- [self mergeFromCodedInputStream:input];
- [input checkLastTagWas:0];
- [input release];
-}
-
-- (void)mergeVarintField:(int32_t)number value:(int32_t)value {
- checkNumber(number);
- [[self mutableFieldForNumber:number create:YES] addVarint:value];
-}
-
-- (BOOL)mergeFieldFrom:(int32_t)tag input:(GPBCodedInputStream *)input {
- NSAssert(GPBWireFormatIsValidTag(tag), @"Got passed an invalid tag");
- int32_t number = GPBWireFormatGetTagFieldNumber(tag);
- GPBCodedInputStreamState *state = &input->state_;
- switch (GPBWireFormatGetTagWireType(tag)) {
- case GPBWireFormatVarint: {
- GPBUnknownField *field = [self mutableFieldForNumber:number create:YES];
- [field addVarint:GPBCodedInputStreamReadInt64(state)];
- return YES;
- }
- case GPBWireFormatFixed64: {
- GPBUnknownField *field = [self mutableFieldForNumber:number create:YES];
- [field addFixed64:GPBCodedInputStreamReadFixed64(state)];
- return YES;
- }
- case GPBWireFormatLengthDelimited: {
- NSData *data = GPBCodedInputStreamReadRetainedBytes(state);
- GPBUnknownField *field = [self mutableFieldForNumber:number create:YES];
- [field addLengthDelimited:data];
- [data release];
- return YES;
- }
- case GPBWireFormatStartGroup: {
- GPBUnknownFieldSet *unknownFieldSet = [[GPBUnknownFieldSet alloc] init];
- [input readUnknownGroup:number message:unknownFieldSet];
- GPBUnknownField *field = [self mutableFieldForNumber:number create:YES];
- [field addGroup:unknownFieldSet];
- [unknownFieldSet release];
- return YES;
- }
- case GPBWireFormatEndGroup:
- return NO;
- case GPBWireFormatFixed32: {
- GPBUnknownField *field = [self mutableFieldForNumber:number create:YES];
- [field addFixed32:GPBCodedInputStreamReadFixed32(state)];
- return YES;
- }
- }
-}
-
-- (void)mergeMessageSetMessage:(int32_t)number data:(NSData *)messageData {
- [[self mutableFieldForNumber:number create:YES]
- addLengthDelimited:messageData];
-}
-
-- (void)addUnknownMapEntry:(int32_t)fieldNum value:(NSData *)data {
- GPBUnknownField *field = [self mutableFieldForNumber:fieldNum create:YES];
- [field addLengthDelimited:data];
-}
-
-- (void)mergeFromCodedInputStream:(GPBCodedInputStream *)input {
- while (YES) {
- int32_t tag = GPBCodedInputStreamReadTag(&input->state_);
- if (tag == 0 || ![self mergeFieldFrom:tag input:input]) {
- break;
- }
- }
-}
-
-- (void)getTags:(int32_t *)tags {
- if (!fields_) return;
- size_t count = CFDictionaryGetCount(fields_);
- ssize_t keys[count];
- CFDictionaryGetKeysAndValues(fields_, (const void **)keys, NULL);
- for (size_t i = 0; i < count; ++i) {
- tags[i] = (int32_t)keys[i];
- }
-}
-
-#pragma clang diagnostic pop
-
-@end
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