hidl-gen: add support for predefined types

b/31221346 Add support for predefined types in HIDL

Change-Id: I090c1ab2f10d4748e53b58485b1ef05114554d01
Signed-off-by: Iliyan Malchev <malchev@google.com>
diff --git a/PredefinedType.h b/PredefinedType.h
new file mode 100644
index 0000000..5915eb3
--- /dev/null
+++ b/PredefinedType.h
@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2016 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 PREDEFINED_TYPE_H_
+
+#define PREDEFINED_TYPE_H_
+
+#include "Type.h"
+
+namespace android {
+
+struct PredefinedType : public Type {
+    PredefinedType(const char *name);
+
+    std::string getCppType(StorageMode mode, std::string *extra) const override;
+    std::string getJavaType() const override;
+
+    void emitReaderWriter(
+            Formatter &out,
+            const std::string &name,
+            const std::string &parcelObj,
+            bool parcelObjIsPointer,
+            bool isReader,
+            ErrorMode mode) const override;
+
+    void emitReaderWriterEmbedded(
+            Formatter &out,
+            const std::string &name,
+            bool nameIsPointer,
+            const std::string &parcelObj,
+            bool parcelObjIsPointer,
+            bool isReader,
+            ErrorMode mode,
+            const std::string &parentName,
+            const std::string &offsetText) const override;
+
+    bool isJavaCompatible() const override;
+
+    bool needsEmbeddedReadWrite() const override;
+    bool resultNeedsDeref() const override;
+
+private:
+    std::string mName;
+
+    DISALLOW_COPY_AND_ASSIGN(PredefinedType);
+};
+
+}  // namespace android
+
+#endif  // PREDEFINED_TYPE_H_