First cut at new layout
diff --git a/src/ProtoGen/SourceGeneratorBase.cs b/src/ProtoGen/SourceGeneratorBase.cs
new file mode 100644
index 0000000..563c64a
--- /dev/null
+++ b/src/ProtoGen/SourceGeneratorBase.cs
@@ -0,0 +1,50 @@
+using System.Collections.Generic;
+using Google.ProtocolBuffers.DescriptorProtos;
+using Google.ProtocolBuffers.Descriptors;
+
+namespace Google.ProtocolBuffers.ProtoGen {
+ internal abstract class SourceGeneratorBase<T> where T : IDescriptor {
+
+ private readonly T descriptor;
+
+ protected SourceGeneratorBase(T descriptor) {
+ this.descriptor = descriptor;
+ }
+
+ protected T Descriptor {
+ get { return descriptor; }
+ }
+
+ protected string ClassAccessLevel {
+ get {
+ // Default to public
+ return !descriptor.File.Options.HasExtension(CSharpOptions.CSharpPublicClasses)
+ || descriptor.File.Options.GetExtension(CSharpOptions.CSharpPublicClasses) ? "public" : "internal";
+ }
+ }
+
+ public bool MultipleFiles {
+ get { return descriptor.File.Options.GetExtension(CSharpOptions.CSharpMultipleFiles); }
+ }
+
+ protected static void WriteChildren<TChild>(TextGenerator writer, string region, IEnumerable<TChild> children)
+ where TChild : IDescriptor {
+ // Copy the set of children; makes access easier
+ List<TChild> copy = new List<TChild>(children);
+ if (copy.Count == 0) {
+ return;
+ }
+
+ if (region != null) {
+ writer.WriteLine("#region {0}", region);
+ }
+ foreach (TChild child in children) {
+ SourceGenerators.CreateGenerator(child).Generate(writer);
+ }
+ if (region != null) {
+ writer.WriteLine("#endregion");
+ writer.WriteLine();
+ }
+ }
+ }
+}