Implement Serialization Framework and rework WireFormat

Core/EncodingTypes.fs

@@ -0,0 +1,36 @@
+(*
+ * Types used for encoding and decoding raw fields, at the wire format level.
+ *)
+namespace Froto.Core.Encoding
+
+open System
+
+/// Protobuf field wire-type
+type WireType =
+    | Varint = 0
+    | Fixed64 = 1
+    | LengthDelimited = 2
+    | StartGroup = 3
+    | EndGroup = 4
+    | Fixed32 = 5
+
+/// Protobuf field number
+type FieldNum = int32
+
+/// Raw unencoded wire-format field
+type RawField =
+    | Varint of FieldNum * uint64
+    | Fixed32 of FieldNum * uint32
+    | Fixed64 of FieldNum * uint64
+    | LengthDelimited of FieldNum * ArraySegment<byte>
+//    | Group is deprecated & not supported
+    with
+        member x.FieldNum =
+            match x with
+            | Varint(n,_) -> n
+            | Fixed32(n,_) -> n
+            | Fixed64(n,_) -> n
+            | LengthDelimited(n,_) -> n
+        // Need a place to hang this, because it cannot go on FieldNum
+        // (a type alias cannot have methods or properties).
+        static member MaxFieldNum = (2<<<28) - 1

Core/Exceptions.fs

@@ -0,0 +1,12 @@
+namespace Froto.Core
+
+/// Exception encoding or decoding a Protobuf wireformat
+
+type ProtobufException(message:string, ?innerException:exn) =
+    inherit System.ApplicationException( message, defaultArg innerException null )
+
+type ProtobufWireFormatException (message:string, ?innerException:exn) =
+    inherit ProtobufException(message, defaultArg innerException null)
+
+type ProtobufSerializerException (message:string, ?innerException:exn) =
+    inherit ProtobufException(message, defaultArg innerException null)

Core/Froto.Core.fsproj

@@ -29,13 +29,19 @@
     <DefineConstants>TRACE</DefineConstants>
     <WarningLevel>3</WarningLevel>
   </PropertyGroup>
+  <Import Project="$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v$(VisualStudioVersion)\FSharp\Microsoft.FSharp.Targets" />
+  <ItemGroup>
+    <Compile Include="Exceptions.fs" />
+    <Compile Include="ZeroCopyBuffer.fs" />
+    <Compile Include="EncodingTypes.fs" />
+    <Compile Include="WireFormat.fs" />
+    <Compile Include="Serializer.fs" />
+    <None Include="Froto.Core.nuspec" />
+    <None Include="paket.references" />
+  </ItemGroup>
   <ItemGroup>
     <Reference Include="FSharp.Core, Version=4.3.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
     <Reference Include="mscorlib" />
     <Reference Include="System" />
   </ItemGroup>
-  <ItemGroup>
-    <Compile Include="IO.fs" />
-  </ItemGroup>
-  <Import Project="$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v$(VisualStudioVersion)\FSharp\Microsoft.FSharp.Targets" />
-</Project>
+</Project>

Core/Froto.Core.nuspec

@@ -0,0 +1,18 @@
+<?xml version="1.0"?>
+<package>
+  <metadata>
+    <id>Froto.Core</id>
+    <version>0.0.0</version>
+    <authors>Cameron Taggart, James Hugard</authors>
+    <licenseUrl>https://opensource.org/licenses/MIT</licenseUrl>
+    <projectUrl>https://github.com/ctaggart/froto</projectUrl>
+    <requireLicenseAcceptance>false</requireLicenseAcceptance>
+    <description>A serailization library for Protocol Buffers.</description>
+    @dependencies@
+    <tags>froto protobuf binary protocol buffers serialization deserialization</tags>
+  </metadata>
+  <files>
+    <file src="Froto.Core.dll" target="lib\net45" />
+    <file src="Froto.Core.pdb" target="lib\net45" />
+  </files>
+</package>