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#region Copyright notice and license
// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc. All rights reserved.
// http://github.com/jskeet/dotnet-protobufs/
// Original C++/Java/Python code:
// http://code.google.com/p/protobuf/
//
// 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.Globalization;
using System.Reflection;
using System.Text;
namespace Google.ProtocolBuffers
{
///<summary>
///Interface for an enum value or value descriptor, to be used in FieldSet.
///The lite library stores enum values directly in FieldSets but the full
///library stores EnumValueDescriptors in order to better support reflection.
///</summary>
public interface IEnumLite
{
int Number { get; }
string Name { get; }
}
///<summary>
///Interface for an object which maps integers to {@link EnumLite}s.
///{@link Descriptors.EnumDescriptor} implements this interface by mapping
///numbers to {@link Descriptors.EnumValueDescriptor}s. Additionally,
///every generated enum type has a static method internalGetValueMap() which
///returns an implementation of this type that maps numbers to enum values.
///</summary>
public interface IEnumLiteMap<T> : IEnumLiteMap
where T : IEnumLite
{
new T FindValueByNumber(int number);
}
public interface IEnumLiteMap
{
bool IsValidValue(IEnumLite value);
IEnumLite FindValueByNumber(int number);
}
public class EnumLiteMap<TEnum> : IEnumLiteMap<IEnumLite>
where TEnum : struct, IComparable, IFormattable
{
private struct EnumValue : IEnumLite
{
private readonly TEnum value;
public EnumValue(TEnum value)
{
this.value = value;
}
int IEnumLite.Number
{
get { return Convert.ToInt32(value); }
}
string IEnumLite.Name
{
get { return value.ToString(); }
}
}
private readonly SortedList<int, IEnumLite> items;
public EnumLiteMap()
{
items = new SortedList<int, IEnumLite>();
#if SILVERLIGHT2
// Silverlight doesn't support Enum.GetValues
// TODO(jonskeet): Validate that this reflection is permitted, e.g. in Windows Phone 7
foreach (FieldInfo fi in typeof (TEnum).GetFields(BindingFlags.Static | BindingFlags.Public))
{
TEnum evalue = (TEnum) fi.GetValue(null);
items.Add(Convert.ToInt32(evalue), new EnumValue(evalue));
}
#else
foreach (TEnum evalue in Enum.GetValues(typeof(TEnum)))
items.Add(Convert.ToInt32(evalue), new EnumValue(evalue));
#endif
}
IEnumLite IEnumLiteMap.FindValueByNumber(int number)
{
return FindValueByNumber(number);
}
public IEnumLite FindValueByNumber(int number)
{
IEnumLite val;
return items.TryGetValue(number, out val) ? val : null;
}
public bool IsValidValue(IEnumLite value)
{
return items.ContainsKey(value.Number);
}
}
}
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