Fixed handling of the argument for indexers.

src/Generator/Generators/CLI/CLISourcesTemplate.cs

@@ -409,7 +409,18 @@ namespace CppSharp.Generators.CLI
                 param.Visit(marshal);
 
                 if (isIndexer)
-                    variable += string.Format("({0})", indexParameter.Name);
+                {
+                    var ctx2 = new MarshalContext(Driver)
+                    {
+                        Parameter = indexParameter,
+                        ArgName = indexParameter.Name
+                    };
+
+                    var marshal2 = new CLIMarshalManagedToNativePrinter(ctx2);
+                    indexParameter.Visit(marshal2);
+
+                    variable += string.Format("({0})", marshal2.Context.Return);
+                }
 
                 if (!string.IsNullOrWhiteSpace(marshal.Context.SupportBefore))
                     Write(marshal.Context.SupportBefore);

tests/Basic/Basic.h

@@ -486,6 +486,8 @@ public:
     TestProperties* operator[](unsigned char b);
     // Should lead to a read-only indexer with return type TestProperties
     const TestProperties& operator[](short b);
+    // Should lead to a read-only indexer with argument type TestProperties
+    foo_t operator[](TestProperties b);
 };
 
 TestIndexedProperties::TestIndexedProperties() : p(1), f() {}
@@ -495,6 +497,7 @@ foo_t* TestIndexedProperties::operator[](float f) { return &p; }
 const foo_t& TestIndexedProperties::operator[](double f) { return p; }
 TestProperties* TestIndexedProperties::operator[](unsigned char b) { return &f; }
 const TestProperties& TestIndexedProperties::operator[](short b) { return f; }
+foo_t TestIndexedProperties::operator[](TestProperties b) { return p; }
 
 struct DLL_API TestIndexedPropertiesInValueType
 {