392 lines
16 KiB
Objective-C
392 lines
16 KiB
Objective-C
// Protocol Buffers - Google's data interchange format
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// Copyright 2008 Google Inc. All rights reserved.
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// https://developers.google.com/protocol-buffers/
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#import "GPBExtensionInternals.h"
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#import <objc/runtime.h>
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#import "GPBCodedInputStream_PackagePrivate.h"
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#import "GPBCodedOutputStream_PackagePrivate.h"
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#import "GPBDescriptor_PackagePrivate.h"
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#import "GPBMessage_PackagePrivate.h"
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#import "GPBUtilities_PackagePrivate.h"
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static id NewSingleValueFromInputStream(GPBExtensionDescriptor *extension,
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GPBCodedInputStream *input,
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GPBExtensionRegistry *extensionRegistry,
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GPBMessage *existingValue)
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__attribute__((ns_returns_retained));
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GPB_INLINE size_t DataTypeSize(GPBDataType dataType) {
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#pragma clang diagnostic push
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#pragma clang diagnostic ignored "-Wswitch-enum"
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switch (dataType) {
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case GPBDataTypeBool:
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return 1;
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case GPBDataTypeFixed32:
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case GPBDataTypeSFixed32:
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case GPBDataTypeFloat:
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return 4;
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case GPBDataTypeFixed64:
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case GPBDataTypeSFixed64:
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case GPBDataTypeDouble:
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return 8;
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default:
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return 0;
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}
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#pragma clang diagnostic pop
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}
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static size_t ComputePBSerializedSizeNoTagOfObject(GPBDataType dataType, id object) {
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#define FIELD_CASE(TYPE, ACCESSOR) \
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case GPBDataType##TYPE: \
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return GPBCompute##TYPE##SizeNoTag([(NSNumber *)object ACCESSOR]);
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#define FIELD_CASE2(TYPE) \
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case GPBDataType##TYPE: \
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return GPBCompute##TYPE##SizeNoTag(object);
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switch (dataType) {
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FIELD_CASE(Bool, boolValue)
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FIELD_CASE(Float, floatValue)
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FIELD_CASE(Double, doubleValue)
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FIELD_CASE(Int32, intValue)
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FIELD_CASE(SFixed32, intValue)
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FIELD_CASE(SInt32, intValue)
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FIELD_CASE(Enum, intValue)
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FIELD_CASE(Int64, longLongValue)
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FIELD_CASE(SInt64, longLongValue)
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FIELD_CASE(SFixed64, longLongValue)
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FIELD_CASE(UInt32, unsignedIntValue)
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FIELD_CASE(Fixed32, unsignedIntValue)
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FIELD_CASE(UInt64, unsignedLongLongValue)
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FIELD_CASE(Fixed64, unsignedLongLongValue)
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FIELD_CASE2(Bytes)
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FIELD_CASE2(String)
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FIELD_CASE2(Message)
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FIELD_CASE2(Group)
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}
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#undef FIELD_CASE
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#undef FIELD_CASE2
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}
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static size_t ComputeSerializedSizeIncludingTagOfObject(
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GPBExtensionDescription *description, id object) {
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#define FIELD_CASE(TYPE, ACCESSOR) \
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case GPBDataType##TYPE: \
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return GPBCompute##TYPE##Size(description->fieldNumber, \
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[(NSNumber *)object ACCESSOR]);
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#define FIELD_CASE2(TYPE) \
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case GPBDataType##TYPE: \
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return GPBCompute##TYPE##Size(description->fieldNumber, object);
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switch (description->dataType) {
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FIELD_CASE(Bool, boolValue)
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FIELD_CASE(Float, floatValue)
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FIELD_CASE(Double, doubleValue)
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FIELD_CASE(Int32, intValue)
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FIELD_CASE(SFixed32, intValue)
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FIELD_CASE(SInt32, intValue)
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FIELD_CASE(Enum, intValue)
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FIELD_CASE(Int64, longLongValue)
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FIELD_CASE(SInt64, longLongValue)
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FIELD_CASE(SFixed64, longLongValue)
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FIELD_CASE(UInt32, unsignedIntValue)
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FIELD_CASE(Fixed32, unsignedIntValue)
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FIELD_CASE(UInt64, unsignedLongLongValue)
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FIELD_CASE(Fixed64, unsignedLongLongValue)
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FIELD_CASE2(Bytes)
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FIELD_CASE2(String)
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FIELD_CASE2(Group)
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case GPBDataTypeMessage:
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if (GPBExtensionIsWireFormat(description)) {
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return GPBComputeMessageSetExtensionSize(description->fieldNumber,
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object);
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} else {
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return GPBComputeMessageSize(description->fieldNumber, object);
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}
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}
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#undef FIELD_CASE
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#undef FIELD_CASE2
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}
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static size_t ComputeSerializedSizeIncludingTagOfArray(
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GPBExtensionDescription *description, NSArray *values) {
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if (GPBExtensionIsPacked(description)) {
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size_t size = 0;
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size_t typeSize = DataTypeSize(description->dataType);
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if (typeSize != 0) {
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size = values.count * typeSize;
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} else {
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for (id value in values) {
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size +=
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ComputePBSerializedSizeNoTagOfObject(description->dataType, value);
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}
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}
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return size + GPBComputeTagSize(description->fieldNumber) +
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GPBComputeRawVarint32SizeForInteger(size);
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} else {
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size_t size = 0;
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for (id value in values) {
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size += ComputeSerializedSizeIncludingTagOfObject(description, value);
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}
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return size;
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}
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}
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static void WriteObjectIncludingTagToCodedOutputStream(
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id object, GPBExtensionDescription *description,
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GPBCodedOutputStream *output) {
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#define FIELD_CASE(TYPE, ACCESSOR) \
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case GPBDataType##TYPE: \
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[output write##TYPE:description->fieldNumber \
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value:[(NSNumber *)object ACCESSOR]]; \
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return;
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#define FIELD_CASE2(TYPE) \
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case GPBDataType##TYPE: \
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[output write##TYPE:description->fieldNumber value:object]; \
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return;
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switch (description->dataType) {
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FIELD_CASE(Bool, boolValue)
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FIELD_CASE(Float, floatValue)
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FIELD_CASE(Double, doubleValue)
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FIELD_CASE(Int32, intValue)
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FIELD_CASE(SFixed32, intValue)
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FIELD_CASE(SInt32, intValue)
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FIELD_CASE(Enum, intValue)
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FIELD_CASE(Int64, longLongValue)
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FIELD_CASE(SInt64, longLongValue)
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FIELD_CASE(SFixed64, longLongValue)
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FIELD_CASE(UInt32, unsignedIntValue)
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FIELD_CASE(Fixed32, unsignedIntValue)
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FIELD_CASE(UInt64, unsignedLongLongValue)
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FIELD_CASE(Fixed64, unsignedLongLongValue)
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FIELD_CASE2(Bytes)
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FIELD_CASE2(String)
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FIELD_CASE2(Group)
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case GPBDataTypeMessage:
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if (GPBExtensionIsWireFormat(description)) {
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[output writeMessageSetExtension:description->fieldNumber value:object];
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} else {
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[output writeMessage:description->fieldNumber value:object];
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}
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return;
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}
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#undef FIELD_CASE
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#undef FIELD_CASE2
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}
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static void WriteObjectNoTagToCodedOutputStream(
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id object, GPBExtensionDescription *description,
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GPBCodedOutputStream *output) {
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#define FIELD_CASE(TYPE, ACCESSOR) \
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case GPBDataType##TYPE: \
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[output write##TYPE##NoTag:[(NSNumber *)object ACCESSOR]]; \
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return;
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#define FIELD_CASE2(TYPE) \
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case GPBDataType##TYPE: \
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[output write##TYPE##NoTag:object]; \
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return;
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switch (description->dataType) {
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FIELD_CASE(Bool, boolValue)
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FIELD_CASE(Float, floatValue)
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FIELD_CASE(Double, doubleValue)
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FIELD_CASE(Int32, intValue)
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FIELD_CASE(SFixed32, intValue)
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FIELD_CASE(SInt32, intValue)
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FIELD_CASE(Enum, intValue)
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FIELD_CASE(Int64, longLongValue)
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FIELD_CASE(SInt64, longLongValue)
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FIELD_CASE(SFixed64, longLongValue)
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FIELD_CASE(UInt32, unsignedIntValue)
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FIELD_CASE(Fixed32, unsignedIntValue)
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FIELD_CASE(UInt64, unsignedLongLongValue)
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FIELD_CASE(Fixed64, unsignedLongLongValue)
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FIELD_CASE2(Bytes)
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FIELD_CASE2(String)
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FIELD_CASE2(Message)
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case GPBDataTypeGroup:
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[output writeGroupNoTag:description->fieldNumber value:object];
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return;
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}
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#undef FIELD_CASE
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#undef FIELD_CASE2
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}
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static void WriteArrayIncludingTagsToCodedOutputStream(
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NSArray *values, GPBExtensionDescription *description,
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GPBCodedOutputStream *output) {
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if (GPBExtensionIsPacked(description)) {
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[output writeTag:description->fieldNumber
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format:GPBWireFormatLengthDelimited];
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size_t dataSize = 0;
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size_t typeSize = DataTypeSize(description->dataType);
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if (typeSize != 0) {
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dataSize = values.count * typeSize;
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} else {
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for (id value in values) {
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dataSize +=
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ComputePBSerializedSizeNoTagOfObject(description->dataType, value);
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}
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}
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[output writeRawVarintSizeTAs32:dataSize];
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for (id value in values) {
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WriteObjectNoTagToCodedOutputStream(value, description, output);
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}
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} else {
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for (id value in values) {
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WriteObjectIncludingTagToCodedOutputStream(value, description, output);
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}
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}
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}
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// Direct access is use for speed, to avoid even internally declaring things
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// read/write, etc. The warning is enabled in the project to ensure code calling
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// protos can turn on -Wdirect-ivar-access without issues.
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#pragma clang diagnostic push
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#pragma clang diagnostic ignored "-Wdirect-ivar-access"
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void GPBExtensionMergeFromInputStream(GPBExtensionDescriptor *extension,
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BOOL isPackedOnStream,
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GPBCodedInputStream *input,
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GPBExtensionRegistry *extensionRegistry,
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GPBMessage *message) {
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GPBExtensionDescription *description = extension->description_;
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GPBCodedInputStreamState *state = &input->state_;
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if (isPackedOnStream) {
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NSCAssert(GPBExtensionIsRepeated(description),
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@"How was it packed if it isn't repeated?");
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int32_t length = GPBCodedInputStreamReadInt32(state);
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size_t limit = GPBCodedInputStreamPushLimit(state, length);
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while (GPBCodedInputStreamBytesUntilLimit(state) > 0) {
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id value = NewSingleValueFromInputStream(extension,
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input,
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extensionRegistry,
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nil);
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[message addExtension:extension value:value];
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[value release];
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}
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GPBCodedInputStreamPopLimit(state, limit);
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} else {
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id existingValue = nil;
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BOOL isRepeated = GPBExtensionIsRepeated(description);
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if (!isRepeated && GPBDataTypeIsMessage(description->dataType)) {
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existingValue = [message getExistingExtension:extension];
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}
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id value = NewSingleValueFromInputStream(extension,
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input,
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extensionRegistry,
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existingValue);
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if (isRepeated) {
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[message addExtension:extension value:value];
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} else {
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[message setExtension:extension value:value];
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}
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[value release];
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}
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}
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void GPBWriteExtensionValueToOutputStream(GPBExtensionDescriptor *extension,
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id value,
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GPBCodedOutputStream *output) {
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GPBExtensionDescription *description = extension->description_;
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if (GPBExtensionIsRepeated(description)) {
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WriteArrayIncludingTagsToCodedOutputStream(value, description, output);
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} else {
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WriteObjectIncludingTagToCodedOutputStream(value, description, output);
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}
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}
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size_t GPBComputeExtensionSerializedSizeIncludingTag(
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GPBExtensionDescriptor *extension, id value) {
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GPBExtensionDescription *description = extension->description_;
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if (GPBExtensionIsRepeated(description)) {
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return ComputeSerializedSizeIncludingTagOfArray(description, value);
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} else {
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return ComputeSerializedSizeIncludingTagOfObject(description, value);
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}
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}
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// Note that this returns a retained value intentionally.
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static id NewSingleValueFromInputStream(GPBExtensionDescriptor *extension,
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GPBCodedInputStream *input,
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GPBExtensionRegistry *extensionRegistry,
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GPBMessage *existingValue) {
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GPBExtensionDescription *description = extension->description_;
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GPBCodedInputStreamState *state = &input->state_;
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switch (description->dataType) {
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case GPBDataTypeBool: return [[NSNumber alloc] initWithBool:GPBCodedInputStreamReadBool(state)];
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case GPBDataTypeFixed32: return [[NSNumber alloc] initWithUnsignedInt:GPBCodedInputStreamReadFixed32(state)];
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case GPBDataTypeSFixed32: return [[NSNumber alloc] initWithInt:GPBCodedInputStreamReadSFixed32(state)];
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case GPBDataTypeFloat: return [[NSNumber alloc] initWithFloat:GPBCodedInputStreamReadFloat(state)];
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case GPBDataTypeFixed64: return [[NSNumber alloc] initWithUnsignedLongLong:GPBCodedInputStreamReadFixed64(state)];
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case GPBDataTypeSFixed64: return [[NSNumber alloc] initWithLongLong:GPBCodedInputStreamReadSFixed64(state)];
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case GPBDataTypeDouble: return [[NSNumber alloc] initWithDouble:GPBCodedInputStreamReadDouble(state)];
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case GPBDataTypeInt32: return [[NSNumber alloc] initWithInt:GPBCodedInputStreamReadInt32(state)];
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case GPBDataTypeInt64: return [[NSNumber alloc] initWithLongLong:GPBCodedInputStreamReadInt64(state)];
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case GPBDataTypeSInt32: return [[NSNumber alloc] initWithInt:GPBCodedInputStreamReadSInt32(state)];
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case GPBDataTypeSInt64: return [[NSNumber alloc] initWithLongLong:GPBCodedInputStreamReadSInt64(state)];
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case GPBDataTypeUInt32: return [[NSNumber alloc] initWithUnsignedInt:GPBCodedInputStreamReadUInt32(state)];
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case GPBDataTypeUInt64: return [[NSNumber alloc] initWithUnsignedLongLong:GPBCodedInputStreamReadUInt64(state)];
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case GPBDataTypeBytes: return GPBCodedInputStreamReadRetainedBytes(state);
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case GPBDataTypeString: return GPBCodedInputStreamReadRetainedString(state);
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case GPBDataTypeEnum: return [[NSNumber alloc] initWithInt:GPBCodedInputStreamReadEnum(state)];
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case GPBDataTypeGroup:
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case GPBDataTypeMessage: {
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GPBMessage *message;
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if (existingValue) {
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message = [existingValue retain];
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} else {
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GPBDescriptor *descriptor = [extension.msgClass descriptor];
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message = [[descriptor.messageClass alloc] init];
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}
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if (description->dataType == GPBDataTypeGroup) {
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[input readGroup:description->fieldNumber
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message:message
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extensionRegistry:extensionRegistry];
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} else {
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// description->dataType == GPBDataTypeMessage
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if (GPBExtensionIsWireFormat(description)) {
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// For MessageSet fields the message length will have already been
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// read.
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[message mergeFromCodedInputStream:input
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extensionRegistry:extensionRegistry];
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} else {
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[input readMessage:message extensionRegistry:extensionRegistry];
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}
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}
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return message;
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}
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}
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return nil;
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}
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#pragma clang diagnostic pop
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