| // 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 "GPBWireFormat.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[GPBDataType_Count] = { |
| 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]; |
| } |
