1 files changed, 41 insertions, 0 deletions
diff --git a/runtime/class_reference.h b/runtime/class_reference.h
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--- /dev/null
+++ b/runtime/class_reference.h
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+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_SRC_CLASS_REFERENCE_H_
+#define ART_SRC_CLASS_REFERENCE_H_
+
+#include <stdint.h>
+
+namespace art {
+
+class DexFile;
+
+// A class is uniquely located by its DexFile and the class_defs_ table index into that DexFile
+typedef std::pair<const DexFile*, uint32_t> ClassReference;
+
+inline bool operator<(const ClassReference& lhs, const ClassReference& rhs) {
+  if (lhs.second < rhs.second) {
+    return true;
+  } else if (lhs.second > rhs.second) {
+    return false;
+  } else {
+    return (lhs.first < rhs.first);
+  }
+}
+
+}  // namespace art
+
+#endif  // ART_SRC_CLASS_REFERENCE_H_