Add support to process pointer parameters (#220)

Author: josesimoes

MetadataProcessor.Shared/Utility/NativeMethodsCrc.cs

@@ -191,13 +191,18 @@ internal static string GetNanoCLRTypeName(TypeReference parameterType)
                     // check if it's generic
                     return "DATATYPE_GENERICTYPE";
                 }
-                else
+                else if(parameterType.IsPointer)
                 {
-                    // this is not a generic, get full qualified type name
-                    string typeName = parameterType.FullName.Replace(".", String.Empty);
-
-                    return CleanupGenericName(typeName);
+                    if (nanoSignaturesTable.PrimitiveTypes.TryGetValue(parameterType.GetElementType().FullName, out myType))
+                    {
+                        return $"{myType}ptr";
+                    }
                 }
+
+                // last attempt: get full qualified type name
+                string typeName = parameterType.FullName.Replace(".", string.Empty);
+
+                return CleanupGenericName(typeName);
             }
         }
 

MetadataProcessor.Tests/StubsGenerationTestNFApp/NativeMethodGeneration.cs

@@ -27,5 +27,8 @@ public void Method()
 
         [MethodImpl(MethodImplOptions.InternalCall)]
         private static extern byte NativeStaticMethodReturningByte(char charParam);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        public extern unsafe void MethodWithPointerParm(void* pointer, int length);
     }
-}
+}

MetadataProcessor.Tests/StubsGenerationTestNFApp/StubsGenerationTestNFApp.nfproj

@@ -15,6 +15,7 @@
     <RootNamespace>StubsGenerationTestNFApp</RootNamespace>
     <AssemblyName>StubsGenerationTestNFApp</AssemblyName>
     <TargetFrameworkVersion>v1.0</TargetFrameworkVersion>
+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
   </PropertyGroup>
   <PropertyGroup Label="nanoFramework">
     <NFMDP_GENERATE_STUBS>True</NFMDP_GENERATE_STUBS>
@@ -35,4 +36,4 @@
       <ProjectConfigurationsDeclaredAsItems />
     </ProjectCapabilities>
   </ProjectExtensions>
-</Project>
+</Project>