fix(parser): Getter should call member classes

lib/parser.dart

@@ -134,6 +134,13 @@ abstract class Getter {
   operator[](name);
 }
 
+stripTrailingNulls(List l) {
+  while (l.length > 0 && l.last == null) {
+    l.removeLast();
+  }
+  return l;
+}
+
 // Returns a tuple [found, value]
 getterChild(value, childKey) {
   if (value is List && childKey is num) {
@@ -163,8 +170,8 @@ getterChild(value, childKey) {
     // maybe it is a member method?
     if (instanceMirror.type.members.containsKey(curSym)) {
       MethodMirror methodMirror = instanceMirror.type.members[curSym];
-      return [true, _relaxFnArgs((args) {
-        if (args == null) args = [];
+      return [true, _relaxFnArgs(([a0, a1, a2, a3, a4, a5]) {
+        var args = stripTrailingNulls([a0, a1, a2, a3, a4, a5]);
         try {
           return instanceMirror.invoke(curSym, args).reflectee;
         } catch (e) {

test/parser_spec.dart

@@ -9,6 +9,11 @@ class TestData {
   method() => "testMethod";
 }
 
+class Ident {
+  id(x) => x;
+  doubleId(x,y) => [x,y];
+}
+
 class Mixin {}
 class MixedTestData extends TestData with Mixin {
 }
@@ -355,6 +360,12 @@ main() {
       expect(eval("x.y.z")).toEqual(null);
     });
 
+    it('should access classes on scope', () {
+      scope['ident'] = new Ident();
+      expect(eval('ident.id(6)')).toEqual(6);
+      expect(eval('ident.doubleId(4,5)')).toEqual([4, 5]);
+    });
+
     it('should resolve deeply nested paths (important for CSP mode)', () {
       scope['a'] = {'b': {'c': {'d': {'e': {'f': {'g': {'h': {'i': {'j': {'k': {'l': {'m': {'n': 'nooo!'}}}}}}}}}}}}};
       expect(eval("a.b.c.d.e.f.g.h.i.j.k.l.m.n")).toBe('nooo!');