diff -r 9c544823d090 -r c0740249963c src/Types.cpp
--- a/src/Types.cpp	Sat Aug 04 19:33:06 2012 -0700
+++ b/src/Types.cpp	Sat Aug 04 20:12:20 2012 -0700
@@ -20,6 +20,7 @@
 #include "Types.h"
 #include "Zone.h"
 #include "Strings.h"
+#include "Structures.h"
 #include "Heap-inl.h"
 
 using namespace ke;
@@ -221,3 +222,20 @@
         return Compare(left->contained(), right->contained());
     }
 }
+
+Descriptor *
+Type::lookupField(Handle<String> name, unsigned *index)
+{
+    assert(isStruct());
+
+    for (unsigned i = 0; i < fields_->length(); i++) {
+        Descriptor *desc = Descriptor::cast(fields_->at(i));
+        if (desc->name() == name) {
+            *index = i;
+            return desc;
+        }
+    }
+
+    return NULL;
+}
+