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Diffstat (limited to 'csharp/src/Google.Protobuf/UnknownField.cs')
| -rw-r--r-- | csharp/src/Google.Protobuf/UnknownField.cs | 263 |
1 files changed, 263 insertions, 0 deletions
diff --git a/csharp/src/Google.Protobuf/UnknownField.cs b/csharp/src/Google.Protobuf/UnknownField.cs new file mode 100644 index 00000000..0d6eed63 --- /dev/null +++ b/csharp/src/Google.Protobuf/UnknownField.cs @@ -0,0 +1,263 @@ +#region Copyright notice and license +// Protocol Buffers - Google's data interchange format +// Copyright 2017 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. +#endregion + +using System; +using System.Collections.Generic; +using System.Collections.ObjectModel; +using Google.Protobuf.Collections; + +namespace Google.Protobuf +{ + /// <summary> + /// Represents a single field in an UnknownFieldSet. + /// + /// An UnknownField consists of four lists of values. The lists correspond + /// to the four "wire types" used in the protocol buffer binary format. + /// Normally, only one of the four lists will contain any values, since it + /// is impossible to define a valid message type that declares two different + /// types for the same field number. However, the code is designed to allow + /// for the case where the same unknown field number is encountered using + /// multiple different wire types. + /// + /// </summary> + internal sealed class UnknownField + { + private List<ulong> varintList; + private List<uint> fixed32List; + private List<ulong> fixed64List; + private List<ByteString> lengthDelimitedList; + + /// <summary> + /// Creates a new UnknownField. + /// </summary> + public UnknownField() + { + } + + /// <summary> + /// Checks if two unknown field are equal. + /// </summary> + public override bool Equals(object other) + { + if (ReferenceEquals(this, other)) + { + return true; + } + UnknownField otherField = other as UnknownField; + return otherField != null + && Lists.Equals(varintList, otherField.varintList) + && Lists.Equals(fixed32List, otherField.fixed32List) + && Lists.Equals(fixed64List, otherField.fixed64List) + && Lists.Equals(lengthDelimitedList, otherField.lengthDelimitedList); + } + + /// <summary> + /// Get the hash code of the unknown field. + /// </summary> + public override int GetHashCode() + { + int hash = 43; + hash = hash * 47 + Lists.GetHashCode(varintList); + hash = hash * 47 + Lists.GetHashCode(fixed32List); + hash = hash * 47 + Lists.GetHashCode(fixed64List); + hash = hash * 47 + Lists.GetHashCode(lengthDelimitedList); + return hash; + } + + /// <summary> + /// Serializes the field, including the field number, and writes it to + /// <paramref name="output"/> + /// </summary> + /// <param name="fieldNumber">The unknown field number.</param> + /// <param name="output">The CodedOutputStream to write to.</param> + internal void WriteTo(int fieldNumber, CodedOutputStream output) + { + if (varintList != null) + { + foreach (ulong value in varintList) + { + output.WriteTag(fieldNumber, WireFormat.WireType.Varint); + output.WriteUInt64(value); + } + } + if (fixed32List != null) + { + foreach (uint value in fixed32List) + { + output.WriteTag(fieldNumber, WireFormat.WireType.Fixed32); + output.WriteFixed32(value); + } + } + if (fixed64List != null) + { + foreach (ulong value in fixed64List) + { + output.WriteTag(fieldNumber, WireFormat.WireType.Fixed64); + output.WriteFixed64(value); + } + } + if (lengthDelimitedList != null) + { + foreach (ByteString value in lengthDelimitedList) + { + output.WriteTag(fieldNumber, WireFormat.WireType.LengthDelimited); + output.WriteBytes(value); + } + } + } + + /// <summary> + /// Computes the number of bytes required to encode this field, including field + /// number. + /// </summary> + internal int GetSerializedSize(int fieldNumber) + { + int result = 0; + if (varintList != null) + { + result += CodedOutputStream.ComputeTagSize(fieldNumber) * varintList.Count; + foreach (ulong value in varintList) + { + result += CodedOutputStream.ComputeUInt64Size(value); + } + } + if (fixed32List != null) + { + result += CodedOutputStream.ComputeTagSize(fieldNumber) * fixed32List.Count; + result += CodedOutputStream.ComputeFixed32Size(1) * fixed32List.Count; + } + if (fixed64List != null) + { + result += CodedOutputStream.ComputeTagSize(fieldNumber) * fixed64List.Count; + result += CodedOutputStream.ComputeFixed64Size(1) * fixed64List.Count; + } + if (lengthDelimitedList != null) + { + result += CodedOutputStream.ComputeTagSize(fieldNumber) * lengthDelimitedList.Count; + foreach (ByteString value in lengthDelimitedList) + { + result += CodedOutputStream.ComputeBytesSize(value); + } + } + return result; + } + + /// <summary> + /// Merge the values in <paramref name="other" /> into this field. For each list + /// of values, <paramref name="other"/>'s values are append to the ones in this + /// field. + /// </summary> + internal UnknownField MergeFrom(UnknownField other) + { + varintList = AddAll(varintList, other.varintList); + fixed32List = AddAll(fixed32List, other.fixed32List); + fixed64List = AddAll(fixed64List, other.fixed64List); + lengthDelimitedList = AddAll(lengthDelimitedList, other.lengthDelimitedList); + return this; + } + + /// <summary> + /// Returns a new list containing all of the given specified values from + /// both the <paramref name="current"/> and <paramref name="extras"/> lists. + /// If <paramref name="current" /> is null and <paramref name="extras"/> is empty, + /// null is returned. Otherwise, either a new list is created (if <paramref name="current" /> + /// is null) or the elements of <paramref name="extras"/> are added to <paramref name="current" />. + /// </summary> + private static List<T> AddAll<T>(List<T> current, IList<T> extras) + { + if (extras.Count == 0) + { + return current; + } + if (current == null) + { + current = new List<T>(extras); + } + else + { + current.AddRange(extras); + } + return current; + } + + /// <summary> + /// Adds a varint value. + /// </summary> + internal UnknownField AddVarint(ulong value) + { + varintList = Add(varintList, value); + return this; + } + + /// <summary> + /// Adds a fixed32 value. + /// </summary> + internal UnknownField AddFixed32(uint value) + { + fixed32List = Add(fixed32List, value); + return this; + } + + /// <summary> + /// Adds a fixed64 value. + /// </summary> + internal UnknownField AddFixed64(ulong value) + { + fixed64List = Add(fixed64List, value); + return this; + } + + /// <summary> + /// Adds a length-delimited value. + /// </summary> + internal UnknownField AddLengthDelimited(ByteString value) + { + lengthDelimitedList = Add(lengthDelimitedList, value); + return this; + } + + /// <summary> + /// Adds <paramref name="value"/> to the <paramref name="list"/>, creating + /// a new list if <paramref name="list"/> is null. The list is returned - either + /// the original reference or the new list. + /// </summary> + private static List<T> Add<T>(List<T> list, T value) + { + if (list == null) + { + list = new List<T>(); + } + list.Add(value); + return list; + } + } +} |