Allow to invoke fields as if they were methods.

frog/leg/ssa/builder.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 class Interceptors {
   Compiler compiler;
   Interceptors(Compiler this.compiler);
 
   SourceString mapOperatorToMethodName(Operator op) {
     String name = op.source.stringValue;
@@ skipping 1569 matching lines @@
     HInstruction context = localsHandler.readThis();
     add(target);
     var inputs = <HInstruction>[target, context];
     addStaticSendArgumentsToList(node, element, inputs);
     push(new HInvokeSuper(selector, inputs));
   }
 
   visitStaticSend(Send node) {
     Selector selector = elements.getSelector(node);
     Element element = elements[node];
-    if (element.kind != ElementKind.FUNCTION &&
-        element.kind != ElementKind.GENERATIVE_CONSTRUCTOR) {
-      compiler.unimplemented(
-          "SsaBuilder.visitStaticSend static field invocation",
-          node: node);
-    }
-    HStatic target = new HStatic(element);
+    HInstruction target = new HStatic(element);
     add(target);
     var inputs = <HInstruction>[];
     inputs.add(target);
-    addStaticSendArgumentsToList(node, element, inputs);
-    push(new HInvokeStatic(selector, inputs));
+    if (element.kind == ElementKind.FUNCTION ||
+        element.kind == ElementKind.GENERATIVE_CONSTRUCTOR) {
+      addStaticSendArgumentsToList(node, element, inputs);
+      push(new HInvokeStatic(selector, inputs));
+    } else {
+      if (element.kind == ElementKind.GETTER) {
+        target = new HInvokeStatic(Selector.GETTER, inputs);
+        add(target);
+        inputs = <HInstruction>[target];
+      }
+      addDynamicSendArgumentsToList(node, inputs);
+      push(new HInvokeClosure(selector, inputs));
+    }
   }
 
   visitSend(Send node) {
     if (node.selector is Operator && methodInterceptionEnabled) {
       visitOperatorSend(node);
     } else if (node.isPropertyAccess) {
       generateGetter(node, elements[node]);
     } else if (Elements.isClosureSend(node, elements)) {
       visitClosureSend(node);
     } else if (node.isSuperCall) {
@@ skipping 458 matching lines @@
   }
 
   visitCatchBlock(CatchBlock node) {
     visit(node.block);
   }
 
   visitTypedef(Typedef node) {
     compiler.unimplemented('SsaBuilder.visitTypedef', node: node);
   }
 }