Merge pull request #83 from AArnott/fix75

Fix handling of array types in fields

Author: AArnott

src/ImmutableObjectGraph.Generation.Tests/CodeGenTests.cs

@@ -68,6 +68,12 @@ public async Task NoFieldsAndOneScalarFieldDerived_HasCreateMethod()
             Assert.Equal(1, result.DeclaredMethods.Count(m => m.ContainingType.Name == "NotSoEmptyDerived" && m.Name == "Create" && m.Parameters.Length == 1 && m.IsStatic));
         }
 
+        [Fact]
+        public async Task ByteArray_CanBuild()
+        {
+            var result = await this.GenerateFromStreamAsync("ByteArray");
+        }
+
         [Fact]
         public async Task OneScalarFieldAndEmptyDerived_HasCreateMethod()
         {

src/ImmutableObjectGraph.Generation.Tests/ImmutableObjectGraph.Generation.Tests.csproj

@@ -57,6 +57,7 @@
     <Compile Include="TestSources\AbstractClassMidTypeHierarchyWithRequiredField.cs">
       <Generator>MSBuild:GenerateCodeFromAttributes</Generator>
     </Compile>
+    <EmbeddedResource Include="TestSources\ByteArray.cs" />
     <Compile Include="TestSources\Generations.cs">
       <Generator>MSBuild:GenerateCodeFromAttributes</Generator>
     </Compile>

src/ImmutableObjectGraph.Generation.Tests/TestSources/ByteArray.cs

@@ -0,0 +1,8 @@
+namespace ImmutableObjectGraph.Generation.Tests.TestSources
+{
+    [GenerateImmutable]
+    partial class ByteArray
+    {
+        readonly byte[] secret;
+    }
+}

src/ImmutableObjectGraph.Generation/CodeGen.cs

@@ -883,7 +883,25 @@ private static bool HasAttribute<T>(INamedTypeSymbol type)
 
         private static NameSyntax GetFullyQualifiedSymbolName(INamespaceOrTypeSymbol symbol)
         {
-            if (symbol == null || string.IsNullOrEmpty(symbol.Name))
+            if (symbol == null)
+            {
+                return null;
+            }
+
+            if (symbol.Kind == SymbolKind.ArrayType)
+            {
+                var arraySymbol = (IArrayTypeSymbol)symbol;
+                var elementType = GetFullyQualifiedSymbolName(arraySymbol.ElementType);
+
+                // I don't know how to create a NameSyntax with an array inside it,
+                // so use ParseName as an escape hatch.
+                ////return SyntaxFactory.ArrayType(elementType)
+                ////    .AddRankSpecifiers(SyntaxFactory.ArrayRankSpecifier()
+                ////        .AddSizes(SyntaxFactory.OmittedArraySizeExpression()));
+                return SyntaxFactory.ParseName(elementType.ToString() + "[]");
+            }
+
+            if (string.IsNullOrEmpty(symbol.Name))
             {
                 return null;
             }