1 // Protocol Buffers - Google's data interchange format 2 // Copyright 2008 Google Inc. All rights reserved. 3 // https://developers.google.com/protocol-buffers/ 4 // 5 // Redistribution and use in source and binary forms, with or without 6 // modification, are permitted provided that the following conditions are 7 // met: 8 // 9 // * Redistributions of source code must retain the above copyright 10 // notice, this list of conditions and the following disclaimer. 11 // * Redistributions in binary form must reproduce the above 12 // copyright notice, this list of conditions and the following disclaimer 13 // in the documentation and/or other materials provided with the 14 // distribution. 15 // * Neither the name of Google Inc. nor the names of its 16 // contributors may be used to endorse or promote products derived from 17 // this software without specific prior written permission. 18 // 19 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 22 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 23 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 24 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 25 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 29 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 31 #import "GPBWireFormat.h" 32 33 #import "GPBUtilities_PackagePrivate.h" 34 35 enum { 36 GPBWireFormatTagTypeBits = 3, 37 GPBWireFormatTagTypeMask = 7 /* = (1 << GPBWireFormatTagTypeBits) - 1 */, 38 }; 39 40 uint32_t GPBWireFormatMakeTag(uint32_t fieldNumber, GPBWireFormat wireType) { 41 return (fieldNumber << GPBWireFormatTagTypeBits) | wireType; 42 } 43 44 GPBWireFormat GPBWireFormatGetTagWireType(uint32_t tag) { 45 return (GPBWireFormat)(tag & GPBWireFormatTagTypeMask); 46 } 47 48 uint32_t GPBWireFormatGetTagFieldNumber(uint32_t tag) { 49 return GPBLogicalRightShift32(tag, GPBWireFormatTagTypeBits); 50 } 51 52 GPBWireFormat GPBWireFormatForType(GPBDataType type, BOOL isPacked) { 53 if (isPacked) { 54 return GPBWireFormatLengthDelimited; 55 } 56 57 static const GPBWireFormat format[GPBDataType_Count] = { 58 GPBWireFormatVarint, // GPBDataTypeBool 59 GPBWireFormatFixed32, // GPBDataTypeFixed32 60 GPBWireFormatFixed32, // GPBDataTypeSFixed32 61 GPBWireFormatFixed32, // GPBDataTypeFloat 62 GPBWireFormatFixed64, // GPBDataTypeFixed64 63 GPBWireFormatFixed64, // GPBDataTypeSFixed64 64 GPBWireFormatFixed64, // GPBDataTypeDouble 65 GPBWireFormatVarint, // GPBDataTypeInt32 66 GPBWireFormatVarint, // GPBDataTypeInt64 67 GPBWireFormatVarint, // GPBDataTypeSInt32 68 GPBWireFormatVarint, // GPBDataTypeSInt64 69 GPBWireFormatVarint, // GPBDataTypeUInt32 70 GPBWireFormatVarint, // GPBDataTypeUInt64 71 GPBWireFormatLengthDelimited, // GPBDataTypeBytes 72 GPBWireFormatLengthDelimited, // GPBDataTypeString 73 GPBWireFormatLengthDelimited, // GPBDataTypeMessage 74 GPBWireFormatStartGroup, // GPBDataTypeGroup 75 GPBWireFormatVarint // GPBDataTypeEnum 76 }; 77 return format[type]; 78 } 79
