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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 Google.ProtocolBuffers.Descriptors;
namespace Google.ProtocolBuffers.ProtoGen
{
public delegate TResult Func<T, TResult>(T arg);
internal static class SourceGenerators
{
private static readonly Dictionary<Type, Func<IDescriptor, ISourceGenerator>> GeneratorFactories = new Dictionary
<Type, Func<IDescriptor, ISourceGenerator>>
{
{
typeof
(
FileDescriptor
)
,
descriptor
=>
new UmbrellaClassGenerator
((
FileDescriptor
)
descriptor)
},
{
typeof
(
EnumDescriptor
)
,
descriptor
=>
new EnumGenerator
((
EnumDescriptor
)
descriptor)
},
{
typeof
(
ServiceDescriptor
)
,
descriptor
=>
new ServiceGenerator
((
ServiceDescriptor
)
descriptor)
},
{
typeof
(
MessageDescriptor
)
,
descriptor
=>
new MessageGenerator
((
MessageDescriptor
)
descriptor)
},
// For other fields, we have IFieldSourceGenerators.
{
typeof
(
FieldDescriptor
)
,
descriptor
=>
new ExtensionGenerator
((
FieldDescriptor
)
descriptor)
}
};
public static IFieldSourceGenerator CreateFieldGenerator(FieldDescriptor field)
{
switch (field.MappedType)
{
case MappedType.Message:
return field.IsRepeated
? (IFieldSourceGenerator) new RepeatedMessageFieldGenerator(field)
: new MessageFieldGenerator(field);
case MappedType.Enum:
return field.IsRepeated
? (IFieldSourceGenerator) new RepeatedEnumFieldGenerator(field)
: new EnumFieldGenerator(field);
default:
return field.IsRepeated
? (IFieldSourceGenerator) new RepeatedPrimitiveFieldGenerator(field)
: new PrimitiveFieldGenerator(field);
}
}
public static ISourceGenerator CreateGenerator<T>(T descriptor) where T : IDescriptor
{
Func<IDescriptor, ISourceGenerator> factory;
if (!GeneratorFactories.TryGetValue(typeof (T), out factory))
{
throw new ArgumentException("No generator registered for " + typeof (T).Name);
}
return factory(descriptor);
}
}
}
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