diff options
Diffstat (limited to 'third_party/protobuf/3.4.0/objectivec/GPBWireFormat.m')
-rw-r--r-- | third_party/protobuf/3.4.0/objectivec/GPBWireFormat.m | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/third_party/protobuf/3.4.0/objectivec/GPBWireFormat.m b/third_party/protobuf/3.4.0/objectivec/GPBWireFormat.m new file mode 100644 index 0000000000..860a339f9a --- /dev/null +++ b/third_party/protobuf/3.4.0/objectivec/GPBWireFormat.m @@ -0,0 +1,85 @@ +// 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]; +} |