upload android base code part6

android/system/libvintf/include/vintf/VersionRange.h

@@ -0,0 +1,69 @@
+/*
+ * Copyright (C) 2017 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 ANDROID_VINTF_VERSION_RANGE_H
+#define ANDROID_VINTF_VERSION_RANGE_H
+
+#include <stdint.h>
+#include <string>
+#include <tuple>
+#include <utility>
+
+#include "Version.h"
+
+namespace android {
+namespace vintf {
+
+// A version range with the same major version, e.g. 2.3-7
+struct VersionRange {
+    VersionRange() : VersionRange(0u, 0u, 0u) {};
+    VersionRange(size_t mjV, size_t miV)
+            : VersionRange(mjV, miV, miV) {};
+    VersionRange(size_t mjV, size_t miM, size_t mxM)
+            : majorVer(mjV), minMinor(miM), maxMinor(mxM) {}
+    inline Version minVer() const { return Version(majorVer, minMinor); }
+    inline Version maxVer() const { return Version(majorVer, maxMinor); }
+    inline bool isSingleVersion() const { return minMinor == maxMinor; };
+
+    inline bool operator==(const VersionRange &other) const {
+        return majorVer == other.majorVer
+            && minMinor == other.minMinor
+            && maxMinor == other.maxMinor;
+    }
+
+    inline bool contains(const Version &ver) const {
+        return minVer() <= ver && ver <= maxVer();
+    }
+
+    // If this == 2.3-7,
+    //     ver == 2.2: false
+    //     ver == 2.3: true
+    //     ver == 2.7: true
+    //     ver == 2.8: false
+    inline bool supportedBy(const Version &ver) const {
+        return majorVer == ver.majorVer && minMinor <= ver.minorVer;
+    }
+
+    size_t majorVer;
+    size_t minMinor;
+    size_t maxMinor;
+};
+
+} // namespace vintf
+} // namespace android
+
+#endif // ANDROID_VINTF_VERSION_RANGE_H