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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.Globalization;
using Google.ProtocolBuffers.Descriptors;
namespace Google.ProtocolBuffers.ProtoGen {
internal class ExtensionGenerator : FieldGeneratorBase, ISourceGenerator {
private readonly string extends;
private readonly string scope;
private readonly string type;
private readonly string name;
internal ExtensionGenerator(FieldDescriptor descriptor)
: base(descriptor) {
if (Descriptor.ExtensionScope != null) {
scope = GetClassName(Descriptor.ExtensionScope);
} else {
scope = DescriptorUtil.GetFullUmbrellaClassName(Descriptor.File);
}
switch (Descriptor.MappedType) {
case MappedType.Message:
type = GetClassName(Descriptor.MessageType);
break;
case MappedType.Enum:
type = GetClassName(Descriptor.EnumType);
break;
default:
type = DescriptorUtil.GetMappedTypeName(Descriptor.MappedType);
break;
}
extends = GetClassName(Descriptor.ContainingType);
name = Descriptor.CSharpOptions.PropertyName;
}
public void Generate(TextGenerator writer) {
writer.WriteLine("public const int {0} = {1};", GetFieldConstantName(Descriptor), Descriptor.FieldNumber);
if (UseLiteRuntime) {
if (Descriptor.MappedType == MappedType.Message && Descriptor.MessageType.Options.MessageSetWireFormat) {
throw new ArgumentException("option message_set_wire_format = true; is not supported in Lite runtime extensions.");
}
if (!Descriptor.IsCLSCompliant && Descriptor.File.CSharpOptions.ClsCompliance) {
writer.WriteLine("[global::System.CLSCompliant(false)]");
}
writer.WriteLine("{0} static pb::{4}<{1}, {2}> {3};", ClassAccessLevel, extends, type, name,
Descriptor.IsRepeated ? "GeneratedRepeatExtensionLite" : "GeneratedExtensionLite");
} else if (Descriptor.IsRepeated) {
if (!Descriptor.IsCLSCompliant && Descriptor.File.CSharpOptions.ClsCompliance) {
writer.WriteLine("[global::System.CLSCompliant(false)]");
}
writer.WriteLine("{0} static pb::GeneratedExtensionBase<scg::IList<{1}>> {2};", ClassAccessLevel, type, name);
} else {
if (!Descriptor.IsCLSCompliant && Descriptor.File.CSharpOptions.ClsCompliance) {
writer.WriteLine("[global::System.CLSCompliant(false)]");
}
writer.WriteLine("{0} static pb::GeneratedExtensionBase<{1}> {2};", ClassAccessLevel, type, name);
}
}
internal void GenerateStaticVariableInitializers(TextGenerator writer) {
if (UseLiteRuntime) {
writer.WriteLine("{0}.{1} = ", scope, name);
writer.Indent();
writer.WriteLine("new pb::{0}<{1}, {2}>(", Descriptor.IsRepeated ? "GeneratedRepeatExtensionLite" : "GeneratedExtensionLite", extends, type);
writer.Indent();
writer.WriteLine("{0}.DefaultInstance,", extends);
if(!Descriptor.IsRepeated)
writer.WriteLine("{0},", Descriptor.HasDefaultValue ? DefaultValue : IsNullableType ? "null" : "default(" + type + ")");
writer.WriteLine("{0},", (Descriptor.MappedType == MappedType.Message) ? type + ".DefaultInstance" : "null");
writer.WriteLine("{0},", (Descriptor.MappedType == MappedType.Enum) ? "new EnumLiteMap<" + type + ">()" : "null");
writer.WriteLine("{0}.{1}FieldNumber,", scope, name);
writer.Write("pbd::FieldType.{0}", Descriptor.FieldType);
if (Descriptor.IsRepeated) {
writer.WriteLine(",");
writer.Write(Descriptor.IsPacked ? "true" : "false");
}
writer.Outdent();
writer.WriteLine(");");
writer.Outdent();
} else if (Descriptor.IsRepeated) {
writer.WriteLine("{0}.{1} = pb::GeneratedRepeatExtension<{2}>.CreateInstance({0}.Descriptor.Extensions[{3}]);", scope, name, type, Descriptor.Index);
} else {
writer.WriteLine("{0}.{1} = pb::GeneratedSingleExtension<{2}>.CreateInstance({0}.Descriptor.Extensions[{3}]);", scope, name, type, Descriptor.Index);
}
}
internal void GenerateExtensionRegistrationCode(TextGenerator writer) {
writer.WriteLine("registry.Add({0}.{1});", scope, name);
}
}
}
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