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// Protocol Buffers - Google's data interchange format
// Copyright 2008 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 "GPBWireFormat.h"
#import "GPBUtilities.h"
#import "GPBUtilities_PackagePrivate.h"
enum {
GPBWireFormatTagTypeBits = 3,
GPBWireFormatTagTypeMask = 7 /* = (1 << GPBWireFormatTagTypeBits) - 1 */,
};
uint32_t GPBWireFormatMakeTag(uint32_t fieldNumber, GPBWireFormat wireType) {
return (fieldNumber << GPBWireFormatTagTypeBits) | wireType;
}
GPBWireFormat GPBWireFormatGetTagWireType(uint32_t tag) {
return (GPBWireFormat)(tag & GPBWireFormatTagTypeMask);
}
uint32_t GPBWireFormatGetTagFieldNumber(uint32_t tag) {
return GPBLogicalRightShift32(tag, GPBWireFormatTagTypeBits);
}
BOOL GPBWireFormatIsValidTag(uint32_t tag) {
uint32_t formatBits = (tag & GPBWireFormatTagTypeMask);
// The valid GPBWireFormat* values are 0-5, anything else is not a valid tag.
BOOL result = (formatBits <= 5);
return result;
}
GPBWireFormat GPBWireFormatForType(GPBDataType type, BOOL isPacked) {
if (isPacked) {
return GPBWireFormatLengthDelimited;
}
static const GPBWireFormat format[] = {
GPBWireFormatVarint, // GPBDataTypeBool
GPBWireFormatFixed32, // GPBDataTypeFixed32
GPBWireFormatFixed32, // GPBDataTypeSFixed32
GPBWireFormatFixed32, // GPBDataTypeFloat
GPBWireFormatFixed64, // GPBDataTypeFixed64
GPBWireFormatFixed64, // GPBDataTypeSFixed64
GPBWireFormatFixed64, // GPBDataTypeDouble
GPBWireFormatVarint, // GPBDataTypeInt32
GPBWireFormatVarint, // GPBDataTypeInt64
GPBWireFormatVarint, // GPBDataTypeSInt32
GPBWireFormatVarint, // GPBDataTypeSInt64
GPBWireFormatVarint, // GPBDataTypeUInt32
GPBWireFormatVarint, // GPBDataTypeUInt64
GPBWireFormatLengthDelimited, // GPBDataTypeBytes
GPBWireFormatLengthDelimited, // GPBDataTypeString
GPBWireFormatLengthDelimited, // GPBDataTypeMessage
GPBWireFormatStartGroup, // GPBDataTypeGroup
GPBWireFormatVarint // GPBDataTypeEnum
};
return format[type];
}
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