[8295] | 1 | #region Copyright notice and license
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| 2 |
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| 3 | // Protocol Buffers - Google's data interchange format
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| 4 | // Copyright 2008 Google Inc. All rights reserved.
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| 5 | // http://github.com/jskeet/dotnet-protobufs/
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| 6 | // Original C++/Java/Python code:
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| 7 | // http://code.google.com/p/protobuf/
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| 8 | //
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| 9 | // Redistribution and use in source and binary forms, with or without
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| 10 | // modification, are permitted provided that the following conditions are
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| 11 | // met:
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| 12 | //
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| 13 | // * Redistributions of source code must retain the above copyright
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| 14 | // notice, this list of conditions and the following disclaimer.
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| 15 | // * Redistributions in binary form must reproduce the above
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| 16 | // copyright notice, this list of conditions and the following disclaimer
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| 17 | // in the documentation and/or other materials provided with the
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| 18 | // distribution.
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| 19 | // * Neither the name of Google Inc. nor the names of its
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| 20 | // contributors may be used to endorse or promote products derived from
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| 21 | // this software without specific prior written permission.
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| 22 | //
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| 23 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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| 24 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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| 25 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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| 26 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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| 27 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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| 28 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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| 29 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 30 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 31 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 32 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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| 33 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 34 |
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| 35 | #endregion
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| 36 |
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| 37 | using System;
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| 38 | using System.Collections.Generic;
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| 39 |
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| 40 | namespace Google.ProtocolBuffers
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| 41 | {
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| 42 | ///<summary>
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| 43 | ///Interface for an enum value or value descriptor, to be used in FieldSet.
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| 44 | ///The lite library stores enum values directly in FieldSets but the full
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| 45 | ///library stores EnumValueDescriptors in order to better support reflection.
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| 46 | ///</summary>
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| 47 | public interface IEnumLite
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| 48 | {
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| 49 | int Number { get; }
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| 50 | string Name { get; }
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| 51 | }
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| 52 |
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| 53 | ///<summary>
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| 54 | ///Interface for an object which maps integers to {@link EnumLite}s.
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| 55 | ///{@link Descriptors.EnumDescriptor} implements this interface by mapping
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| 56 | ///numbers to {@link Descriptors.EnumValueDescriptor}s. Additionally,
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| 57 | ///every generated enum type has a static method internalGetValueMap() which
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| 58 | ///returns an implementation of this type that maps numbers to enum values.
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| 59 | ///</summary>
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| 60 | public interface IEnumLiteMap<T> : IEnumLiteMap
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| 61 | where T : IEnumLite
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| 62 | {
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| 63 | new T FindValueByNumber(int number);
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| 64 | }
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| 65 |
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| 66 | public interface IEnumLiteMap
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| 67 | {
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| 68 | bool IsValidValue(IEnumLite value);
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| 69 | IEnumLite FindValueByNumber(int number);
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| 70 | IEnumLite FindValueByName(string name);
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| 71 | }
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| 72 |
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| 73 | public class EnumLiteMap<TEnum> : IEnumLiteMap<IEnumLite>
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| 74 | where TEnum : struct, IComparable, IFormattable
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| 75 | {
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| 76 | private struct EnumValue : IEnumLite
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| 77 | {
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| 78 | private readonly TEnum value;
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| 79 |
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| 80 | public EnumValue(TEnum value)
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| 81 | {
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| 82 | this.value = value;
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| 83 | }
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| 84 |
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| 85 | int IEnumLite.Number
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| 86 | {
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| 87 | get { return Convert.ToInt32(value); }
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| 88 | }
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| 89 |
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| 90 | string IEnumLite.Name
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| 91 | {
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| 92 | get { return value.ToString(); }
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| 93 | }
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| 94 | }
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| 95 |
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| 96 | private readonly SortedList<int, IEnumLite> items;
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| 97 |
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| 98 | public EnumLiteMap()
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| 99 | {
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| 100 | items = new SortedList<int, IEnumLite>();
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| 101 | #if SILVERLIGHT
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| 102 | // Silverlight doesn't support Enum.GetValues
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| 103 | // TODO(jonskeet): Validate that this reflection is permitted, e.g. in Windows Phone 7
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| 104 | foreach (System.Reflection.FieldInfo fi in typeof(TEnum).GetFields(System.Reflection.BindingFlags.Static | System.Reflection.BindingFlags.Public))
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| 105 | {
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| 106 | TEnum evalue = (TEnum) fi.GetValue(null);
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| 107 | items.Add(Convert.ToInt32(evalue), new EnumValue(evalue));
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| 108 | }
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| 109 | #else
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| 110 | foreach (TEnum evalue in Enum.GetValues(typeof (TEnum)))
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| 111 | {
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| 112 | items.Add(Convert.ToInt32(evalue), new EnumValue(evalue));
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| 113 | }
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| 114 | #endif
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| 115 | }
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| 116 |
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| 117 | IEnumLite IEnumLiteMap.FindValueByNumber(int number)
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| 118 | {
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| 119 | return FindValueByNumber(number);
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| 120 | }
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| 121 |
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| 122 | public IEnumLite FindValueByNumber(int number)
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| 123 | {
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| 124 | IEnumLite val;
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| 125 | return items.TryGetValue(number, out val) ? val : null;
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| 126 | }
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| 127 |
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| 128 | public IEnumLite FindValueByName(string name)
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| 129 | {
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| 130 | IEnumLite val;
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| 131 | if (Enum.IsDefined(typeof (TEnum), name))
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| 132 | {
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| 133 | return items.TryGetValue((int) Enum.Parse(typeof (TEnum), name, false), out val) ? val : null;
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| 134 | }
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| 135 | return null;
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| 136 | }
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| 137 |
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| 138 | public bool IsValidValue(IEnumLite value)
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| 139 | {
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| 140 | return items.ContainsKey(value.Number);
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| 141 | }
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| 142 | }
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| 143 | } |
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