- Improve the message for NoSuchMethodErrors that are

runtime/lib/invocation_mirror.h

Index: runtime/lib/invocation_mirror.h
===================================================================
--- runtime/lib/invocation_mirror.h	(revision 0)
+++ runtime/lib/invocation_mirror.h	(revision 0)
@@ -0,0 +1,48 @@
+// Copyright (c) 2013, 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.
+
+#ifndef LIB_INVOCATION_MIRROR_H_
+#define LIB_INVOCATION_MIRROR_H_
+
+#include "vm/allocation.h"
+
+namespace dart {
+
+class InvocationMirror : public AllStatic {
+ public:
+  // These enum correspond to the constants in invocation_mirror_patch.dart.
+  // It is used to communicate the reason for statically thrown
+  // NoSuchMethodErrors by the compiler.
+  enum Type {
+    // Constants describing the invocation type.
+    // kField cannot be generated by regular invocation mirrors.
+    kMethod = 0,
+    kGetter = 1,
+    kSetter = 2,
+    kField  = 3,
+    kTypeShift = 0,
+    kTypeBits = 2,
+    kTypeMask = (1 << kTypeBits) - 1
+  };
+
+  enum Call {
+    // These values, except kDynamic, are only used when throwing
+    // NoSuchMethodError for compile-time resolution failures.
+    kDynamic = 0,
+    kStatic  = 1,
+    kConstructor = 2,
+    kTopLevel = 3,
+    kCallShift = kTypeBits,
+    kCallBits = 2,
+    kCallMask = (1 << kCallBits) - 1
+  };
+
+  static int EncodeType(Call call, Type type) {
+    return (call << kCallShift) | type;
+  }
+};
+
+}  // namespace dart
+
+#endif  // LIB_INVOCATION_MIRROR_H_