First commit of split-select tool

This tool emits a set of rules as JSON for when a Split APK
should match a target device.

Change-Id: I8bfbdfbdb51efcfc645889dd03e1961f16e39645
diff --git a/tools/split-select/RuleGenerator.h b/tools/split-select/RuleGenerator.h
new file mode 100644
index 0000000..619acd9
--- /dev/null
+++ b/tools/split-select/RuleGenerator.h
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2014 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 H_ANDROID_SPLIT_RULE_GENERATOR
+#define H_ANDROID_SPLIT_RULE_GENERATOR
+
+#include "Abi.h"
+#include "Rule.h"
+#include "SplitDescription.h"
+
+#include <utils/SortedVector.h>
+#include <utils/Vector.h>
+
+namespace split {
+
+struct RuleGenerator {
+    // Generate rules for a Split given the group of mutually exclusive splits it belongs to
+    static android::sp<Rule> generate(const android::SortedVector<SplitDescription>& group, size_t index);
+
+    static android::sp<Rule> generateAbi(const android::Vector<abi::Variant>& allVariants, size_t index);
+    static android::sp<Rule> generateDensity(const android::Vector<int>& allDensities, size_t index);
+};
+
+} // namespace split
+
+#endif // H_ANDROID_SPLIT_RULE_GENERATOR