Add support for mapping BCL types directly

Author: mythz

src/ServiceStack.Text/AutoMappingUtils.cs

@@ -21,6 +21,16 @@ public static class AutoMappingUtils
     {
         public static T ConvertTo<T>(this object from)
         {
+            if (from.GetType() == typeof(T))
+            {
+                return (T)from;
+            }
+
+            if (from.GetType().IsValueType)
+            {
+                return (T)Convert.ChangeType(from, typeof(T));
+            }
+
             if (typeof(IEnumerable).IsAssignableFromType(typeof(T)))
             {
                 var listResult = TranslateListWithElements.TryTranslateCollections(
@@ -750,7 +760,7 @@ public static PropertyGetterDelegate CreateTypeConverter(Type fromType, Type toT
         }
     }
 
-    internal class TypeConverter<From, To> 
+    internal class TypeConverter<From, To>
     {
         static TypeConverter()
         {

tests/ServiceStack.Text.Tests/AutoMappingTests.cs

@@ -303,6 +303,16 @@ public void Does_translate_to_inherited_propeties()
             Assert.That(to.Car.Age, Is.EqualTo(user.Car.Age));
         }
 
+        [Test]
+        public void Can_convert_BclTypes()
+        {
+            Assert.That("from".ConvertTo<string>(), Is.EqualTo("from"));
+            Assert.That(1.ConvertTo<long>(), Is.EqualTo(1L));
+            Assert.That(2L.ConvertTo<int>(), Is.EqualTo(2));
+            Assert.That(3.3d.ConvertTo<float>(), Is.EqualTo(3.3f));
+            Assert.That(4.4d.ConvertTo<decimal>(), Is.EqualTo(4.4m));
+        }
+
         [Test]
         public void Does_coerce_from_BclTypes_to_strings()
         {