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-rw-r--r--objectivec/GPBExtensionInternals.m391
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diff --git a/objectivec/GPBExtensionInternals.m b/objectivec/GPBExtensionInternals.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 "GPBExtensionInternals.h"
-
-#import <objc/runtime.h>
-
-#import "GPBCodedInputStream_PackagePrivate.h"
-#import "GPBCodedOutputStream_PackagePrivate.h"
-#import "GPBDescriptor_PackagePrivate.h"
-#import "GPBMessage_PackagePrivate.h"
-#import "GPBUtilities_PackagePrivate.h"
-
-static id NewSingleValueFromInputStream(GPBExtensionDescriptor *extension,
- GPBCodedInputStream *input,
- GPBExtensionRegistry *extensionRegistry,
- GPBMessage *existingValue)
- __attribute__((ns_returns_retained));
-
-GPB_INLINE size_t DataTypeSize(GPBDataType dataType) {
-#pragma clang diagnostic push
-#pragma clang diagnostic ignored "-Wswitch-enum"
- switch (dataType) {
- case GPBDataTypeBool:
- return 1;
- case GPBDataTypeFixed32:
- case GPBDataTypeSFixed32:
- case GPBDataTypeFloat:
- return 4;
- case GPBDataTypeFixed64:
- case GPBDataTypeSFixed64:
- case GPBDataTypeDouble:
- return 8;
- default:
- return 0;
- }
-#pragma clang diagnostic pop
-}
-
-static size_t ComputePBSerializedSizeNoTagOfObject(GPBDataType dataType, id object) {
-#define FIELD_CASE(TYPE, ACCESSOR) \
- case GPBDataType##TYPE: \
- return GPBCompute##TYPE##SizeNoTag([(NSNumber *)object ACCESSOR]);
-#define FIELD_CASE2(TYPE) \
- case GPBDataType##TYPE: \
- return GPBCompute##TYPE##SizeNoTag(object);
- switch (dataType) {
- FIELD_CASE(Bool, boolValue)
- FIELD_CASE(Float, floatValue)
- FIELD_CASE(Double, doubleValue)
- FIELD_CASE(Int32, intValue)
- FIELD_CASE(SFixed32, intValue)
- FIELD_CASE(SInt32, intValue)
- FIELD_CASE(Enum, intValue)
- FIELD_CASE(Int64, longLongValue)
- FIELD_CASE(SInt64, longLongValue)
- FIELD_CASE(SFixed64, longLongValue)
- FIELD_CASE(UInt32, unsignedIntValue)
- FIELD_CASE(Fixed32, unsignedIntValue)
- FIELD_CASE(UInt64, unsignedLongLongValue)
- FIELD_CASE(Fixed64, unsignedLongLongValue)
- FIELD_CASE2(Bytes)
- FIELD_CASE2(String)
- FIELD_CASE2(Message)
- FIELD_CASE2(Group)
- }
-#undef FIELD_CASE
-#undef FIELD_CASE2
-}
-
-static size_t ComputeSerializedSizeIncludingTagOfObject(
- GPBExtensionDescription *description, id object) {
-#define FIELD_CASE(TYPE, ACCESSOR) \
- case GPBDataType##TYPE: \
- return GPBCompute##TYPE##Size(description->fieldNumber, \
- [(NSNumber *)object ACCESSOR]);
-#define FIELD_CASE2(TYPE) \
- case GPBDataType##TYPE: \
- return GPBCompute##TYPE##Size(description->fieldNumber, object);
- switch (description->dataType) {
- FIELD_CASE(Bool, boolValue)
- FIELD_CASE(Float, floatValue)
- FIELD_CASE(Double, doubleValue)
- FIELD_CASE(Int32, intValue)
- FIELD_CASE(SFixed32, intValue)
- FIELD_CASE(SInt32, intValue)
- FIELD_CASE(Enum, intValue)
- FIELD_CASE(Int64, longLongValue)
- FIELD_CASE(SInt64, longLongValue)
- FIELD_CASE(SFixed64, longLongValue)
- FIELD_CASE(UInt32, unsignedIntValue)
- FIELD_CASE(Fixed32, unsignedIntValue)
- FIELD_CASE(UInt64, unsignedLongLongValue)
- FIELD_CASE(Fixed64, unsignedLongLongValue)
- FIELD_CASE2(Bytes)
- FIELD_CASE2(String)
- FIELD_CASE2(Group)
- case GPBDataTypeMessage:
- if (GPBExtensionIsWireFormat(description)) {
- return GPBComputeMessageSetExtensionSize(description->fieldNumber,
- object);
- } else {
- return GPBComputeMessageSize(description->fieldNumber, object);
- }
- }
-#undef FIELD_CASE
-#undef FIELD_CASE2
-}
-
-static size_t ComputeSerializedSizeIncludingTagOfArray(
- GPBExtensionDescription *description, NSArray *values) {
- if (GPBExtensionIsPacked(description)) {
- size_t size = 0;
- size_t typeSize = DataTypeSize(description->dataType);
- if (typeSize != 0) {
- size = values.count * typeSize;
- } else {
- for (id value in values) {
- size +=
- ComputePBSerializedSizeNoTagOfObject(description->dataType, value);
- }
- }
- return size + GPBComputeTagSize(description->fieldNumber) +
- GPBComputeRawVarint32SizeForInteger(size);
- } else {
- size_t size = 0;
- for (id value in values) {
- size += ComputeSerializedSizeIncludingTagOfObject(description, value);
- }
- return size;
- }
-}
-
-static void WriteObjectIncludingTagToCodedOutputStream(
- id object, GPBExtensionDescription *description,
- GPBCodedOutputStream *output) {
-#define FIELD_CASE(TYPE, ACCESSOR) \
- case GPBDataType##TYPE: \
- [output write##TYPE:description->fieldNumber \
- value:[(NSNumber *)object ACCESSOR]]; \
- return;
-#define FIELD_CASE2(TYPE) \
- case GPBDataType##TYPE: \
- [output write##TYPE:description->fieldNumber value:object]; \
- return;
- switch (description->dataType) {
- FIELD_CASE(Bool, boolValue)
- FIELD_CASE(Float, floatValue)
- FIELD_CASE(Double, doubleValue)
- FIELD_CASE(Int32, intValue)
- FIELD_CASE(SFixed32, intValue)
- FIELD_CASE(SInt32, intValue)
- FIELD_CASE(Enum, intValue)
- FIELD_CASE(Int64, longLongValue)
- FIELD_CASE(SInt64, longLongValue)
- FIELD_CASE(SFixed64, longLongValue)
- FIELD_CASE(UInt32, unsignedIntValue)
- FIELD_CASE(Fixed32, unsignedIntValue)
- FIELD_CASE(UInt64, unsignedLongLongValue)
- FIELD_CASE(Fixed64, unsignedLongLongValue)
- FIELD_CASE2(Bytes)
- FIELD_CASE2(String)
- FIELD_CASE2(Group)
- case GPBDataTypeMessage:
- if (GPBExtensionIsWireFormat(description)) {
- [output writeMessageSetExtension:description->fieldNumber value:object];
- } else {
- [output writeMessage:description->fieldNumber value:object];
- }
- return;
- }
-#undef FIELD_CASE
-#undef FIELD_CASE2
-}
-
-static void WriteObjectNoTagToCodedOutputStream(
- id object, GPBExtensionDescription *description,
- GPBCodedOutputStream *output) {
-#define FIELD_CASE(TYPE, ACCESSOR) \
- case GPBDataType##TYPE: \
- [output write##TYPE##NoTag:[(NSNumber *)object ACCESSOR]]; \
- return;
-#define FIELD_CASE2(TYPE) \
- case GPBDataType##TYPE: \
- [output write##TYPE##NoTag:object]; \
- return;
- switch (description->dataType) {
- FIELD_CASE(Bool, boolValue)
- FIELD_CASE(Float, floatValue)
- FIELD_CASE(Double, doubleValue)
- FIELD_CASE(Int32, intValue)
- FIELD_CASE(SFixed32, intValue)
- FIELD_CASE(SInt32, intValue)
- FIELD_CASE(Enum, intValue)
- FIELD_CASE(Int64, longLongValue)
- FIELD_CASE(SInt64, longLongValue)
- FIELD_CASE(SFixed64, longLongValue)
- FIELD_CASE(UInt32, unsignedIntValue)
- FIELD_CASE(Fixed32, unsignedIntValue)
- FIELD_CASE(UInt64, unsignedLongLongValue)
- FIELD_CASE(Fixed64, unsignedLongLongValue)
- FIELD_CASE2(Bytes)
- FIELD_CASE2(String)
- FIELD_CASE2(Message)
- case GPBDataTypeGroup:
- [output writeGroupNoTag:description->fieldNumber value:object];
- return;
- }
-#undef FIELD_CASE
-#undef FIELD_CASE2
-}
-
-static void WriteArrayIncludingTagsToCodedOutputStream(
- NSArray *values, GPBExtensionDescription *description,
- GPBCodedOutputStream *output) {
- if (GPBExtensionIsPacked(description)) {
- [output writeTag:description->fieldNumber
- format:GPBWireFormatLengthDelimited];
- size_t dataSize = 0;
- size_t typeSize = DataTypeSize(description->dataType);
- if (typeSize != 0) {
- dataSize = values.count * typeSize;
- } else {
- for (id value in values) {
- dataSize +=
- ComputePBSerializedSizeNoTagOfObject(description->dataType, value);
- }
- }
- [output writeRawVarintSizeTAs32:dataSize];
- for (id value in values) {
- WriteObjectNoTagToCodedOutputStream(value, description, output);
- }
- } else {
- for (id value in values) {
- WriteObjectIncludingTagToCodedOutputStream(value, description, output);
- }
- }
-}
-
-// 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"
-
-void GPBExtensionMergeFromInputStream(GPBExtensionDescriptor *extension,
- BOOL isPackedOnStream,
- GPBCodedInputStream *input,
- GPBExtensionRegistry *extensionRegistry,
- GPBMessage *message) {
- GPBExtensionDescription *description = extension->description_;
- GPBCodedInputStreamState *state = &input->state_;
- if (isPackedOnStream) {
- NSCAssert(GPBExtensionIsRepeated(description),
- @"How was it packed if it isn't repeated?");
- int32_t length = GPBCodedInputStreamReadInt32(state);
- size_t limit = GPBCodedInputStreamPushLimit(state, length);
- while (GPBCodedInputStreamBytesUntilLimit(state) > 0) {
- id value = NewSingleValueFromInputStream(extension,
- input,
- extensionRegistry,
- nil);
- [message addExtension:extension value:value];
- [value release];
- }
- GPBCodedInputStreamPopLimit(state, limit);
- } else {
- id existingValue = nil;
- BOOL isRepeated = GPBExtensionIsRepeated(description);
- if (!isRepeated && GPBDataTypeIsMessage(description->dataType)) {
- existingValue = [message getExistingExtension:extension];
- }
- id value = NewSingleValueFromInputStream(extension,
- input,
- extensionRegistry,
- existingValue);
- if (isRepeated) {
- [message addExtension:extension value:value];
- } else {
- [message setExtension:extension value:value];
- }
- [value release];
- }
-}
-
-void GPBWriteExtensionValueToOutputStream(GPBExtensionDescriptor *extension,
- id value,
- GPBCodedOutputStream *output) {
- GPBExtensionDescription *description = extension->description_;
- if (GPBExtensionIsRepeated(description)) {
- WriteArrayIncludingTagsToCodedOutputStream(value, description, output);
- } else {
- WriteObjectIncludingTagToCodedOutputStream(value, description, output);
- }
-}
-
-size_t GPBComputeExtensionSerializedSizeIncludingTag(
- GPBExtensionDescriptor *extension, id value) {
- GPBExtensionDescription *description = extension->description_;
- if (GPBExtensionIsRepeated(description)) {
- return ComputeSerializedSizeIncludingTagOfArray(description, value);
- } else {
- return ComputeSerializedSizeIncludingTagOfObject(description, value);
- }
-}
-
-// Note that this returns a retained value intentionally.
-static id NewSingleValueFromInputStream(GPBExtensionDescriptor *extension,
- GPBCodedInputStream *input,
- GPBExtensionRegistry *extensionRegistry,
- GPBMessage *existingValue) {
- GPBExtensionDescription *description = extension->description_;
- GPBCodedInputStreamState *state = &input->state_;
- switch (description->dataType) {
- case GPBDataTypeBool: return [[NSNumber alloc] initWithBool:GPBCodedInputStreamReadBool(state)];
- case GPBDataTypeFixed32: return [[NSNumber alloc] initWithUnsignedInt:GPBCodedInputStreamReadFixed32(state)];
- case GPBDataTypeSFixed32: return [[NSNumber alloc] initWithInt:GPBCodedInputStreamReadSFixed32(state)];
- case GPBDataTypeFloat: return [[NSNumber alloc] initWithFloat:GPBCodedInputStreamReadFloat(state)];
- case GPBDataTypeFixed64: return [[NSNumber alloc] initWithUnsignedLongLong:GPBCodedInputStreamReadFixed64(state)];
- case GPBDataTypeSFixed64: return [[NSNumber alloc] initWithLongLong:GPBCodedInputStreamReadSFixed64(state)];
- case GPBDataTypeDouble: return [[NSNumber alloc] initWithDouble:GPBCodedInputStreamReadDouble(state)];
- case GPBDataTypeInt32: return [[NSNumber alloc] initWithInt:GPBCodedInputStreamReadInt32(state)];
- case GPBDataTypeInt64: return [[NSNumber alloc] initWithLongLong:GPBCodedInputStreamReadInt64(state)];
- case GPBDataTypeSInt32: return [[NSNumber alloc] initWithInt:GPBCodedInputStreamReadSInt32(state)];
- case GPBDataTypeSInt64: return [[NSNumber alloc] initWithLongLong:GPBCodedInputStreamReadSInt64(state)];
- case GPBDataTypeUInt32: return [[NSNumber alloc] initWithUnsignedInt:GPBCodedInputStreamReadUInt32(state)];
- case GPBDataTypeUInt64: return [[NSNumber alloc] initWithUnsignedLongLong:GPBCodedInputStreamReadUInt64(state)];
- case GPBDataTypeBytes: return GPBCodedInputStreamReadRetainedBytes(state);
- case GPBDataTypeString: return GPBCodedInputStreamReadRetainedString(state);
- case GPBDataTypeEnum: return [[NSNumber alloc] initWithInt:GPBCodedInputStreamReadEnum(state)];
- case GPBDataTypeGroup:
- case GPBDataTypeMessage: {
- GPBMessage *message;
- if (existingValue) {
- message = [existingValue retain];
- } else {
- GPBDescriptor *decriptor = [extension.msgClass descriptor];
- message = [[decriptor.messageClass alloc] init];
- }
-
- if (description->dataType == GPBDataTypeGroup) {
- [input readGroup:description->fieldNumber
- message:message
- extensionRegistry:extensionRegistry];
- } else {
- // description->dataType == GPBDataTypeMessage
- if (GPBExtensionIsWireFormat(description)) {
- // For MessageSet fields the message length will have already been
- // read.
- [message mergeFromCodedInputStream:input
- extensionRegistry:extensionRegistry];
- } else {
- [input readMessage:message extensionRegistry:extensionRegistry];
- }
- }
-
- return message;
- }
- }
-
- return nil;
-}
-
-#pragma clang diagnostic pop
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