Feature/dotnet host functions

dotnet/Extism.sln.DotSettings

@@ -0,0 +1,2 @@
+<wpf:ResourceDictionary xml:space="preserve" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:s="clr-namespace:System;assembly=mscorlib" xmlns:ss="urn:shemas-jetbrains-com:settings-storage-xaml" xmlns:wpf="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
+	<s:Boolean x:Key="/Default/UserDictionary/Words/=extism/@EntryIndexedValue">True</s:Boolean></wpf:ResourceDictionary>

dotnet/samples/Extism.Sdk.Sample/Extism.Sdk.Sample.csproj

@@ -13,6 +13,10 @@
     </None>
   </ItemGroup>
 
+  <ItemGroup>
+    <PackageReference Include="Extism.runtime.win-x64" Version="0.3.0" />
+  </ItemGroup>
+
   <ItemGroup>
     <ProjectReference Include="..\..\src\Extism.Sdk\Extism.Sdk.csproj" />
   </ItemGroup>

dotnet/src/Extism.Sdk/Context.cs

@@ -6,7 +6,7 @@ namespace Extism.Sdk.Native;
 /// <summary>
 /// Represents an Extism context through which you can load <see cref="Plugin"/>s.
 /// </summary>
-public class Context : IDisposable
+public unsafe class Context : IDisposable
 {
     private const int DisposedMarker = 1;
 
@@ -17,13 +17,16 @@ public class Context : IDisposable
     /// </summary>
     public Context()
     {
-        NativeHandle = LibExtism.extism_context_new();
+        unsafe
+        {
+            NativeHandle = LibExtism.extism_context_new();
+        }
     }
 
     /// <summary>
     /// Native pointer to the Extism Context.
     /// </summary>
-    internal IntPtr NativeHandle { get; }
+    internal LibExtism.ExtismContext* NativeHandle { get; }
 
     /// <summary>
     /// Loads an Extism <see cref="Plugin"/>.
@@ -34,12 +37,18 @@ public Plugin CreatePlugin(ReadOnlySpan<byte> wasm, bool withWasi)
     {
         CheckNotDisposed();
 
+
         unsafe
         {
             fixed (byte* wasmPtr = wasm)
             {
                 var plugin = LibExtism.extism_plugin_new(NativeHandle, wasmPtr, wasm.Length, null, 0, withWasi);
-                return new Plugin(this, plugin);
+                if (plugin == -1)
+                {
+                    throw new ExtismException(GetError() ?? "Unknown exception when calling extism_plugin_new");
+                }
+                var cancelHandle = LibExtism.extism_plugin_cancel_handle(NativeHandle, plugin);
+                return new Plugin(this, plugin, cancelHandle);
             }
         }
     }
@@ -131,6 +140,7 @@ public static string GetExtismVersion()
         return Marshal.PtrToStringUTF8(pointer);
     }
 
+    // TODO: this should not be within the context, neither should the version.
     /// <summary>
     /// Set Extism's log file and level. This is applied for all <see cref="Context"/>s.
     /// </summary>
@@ -152,6 +162,7 @@ public static bool SetExtismLogFile(string logPath, LogLevel level)
     }
 }
 
+// TODO: check if the enums are correctly set
 /// <summary>
 /// Extism Log Levels
 /// </summary>