1 files changed, 205 insertions, 0 deletions
diff --git a/test/674-hiddenapi/src-ex/Reflection.java b/test/674-hiddenapi/src-ex/Reflection.java
new file mode 100644
index 0000000000..3667e91611
--- /dev/null
+++ b/test/674-hiddenapi/src-ex/Reflection.java
@@ -0,0 +1,205 @@
+/*
+ * 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.
+ */
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Field;
+import java.lang.reflect.Method;
+import java.lang.reflect.Modifier;
+import java.util.Arrays;
+
+public class Reflection {
+  public static boolean canDiscoverWithGetDeclaredField(Class<?> klass, String name) {
+    try {
+      klass.getDeclaredField(name);
+      return true;
+    } catch (NoSuchFieldException ex) {
+      return false;
+    }
+  }
+
+  public static boolean canDiscoverWithGetDeclaredFields(Class<?> klass, String name) {
+    for (Field f : klass.getDeclaredFields()) {
+      if (f.getName().equals(name)) {
+        return true;
+      }
+    }
+    return false;
+  }
+
+  public static boolean canDiscoverWithGetField(Class<?> klass, String name) {
+    try {
+      klass.getField(name);
+      return true;
+    } catch (NoSuchFieldException ex) {
+      return false;
+    }
+  }
+
+  public static boolean canDiscoverWithGetFields(Class<?> klass, String name) {
+    for (Field f : klass.getFields()) {
+      if (f.getName().equals(name)) {
+        return true;
+      }
+    }
+    return false;
+  }
+
+  public static boolean canGetField(Class<?> klass, String name) {
+    try {
+      Field f = klass.getDeclaredField(name);
+      f.setAccessible(true);
+      f.getInt(Modifier.isStatic(f.getModifiers()) ? null : klass.newInstance());
+      return true;
+    } catch (Exception ex) {
+      ex.printStackTrace();
+      return false;
+    }
+  }
+
+  public static boolean canSetField(Class<?> klass, String name) {
+    try {
+      Field f = klass.getDeclaredField(name);
+      f.setAccessible(true);
+      f.setInt(Modifier.isStatic(f.getModifiers()) ? null : klass.newInstance(), 42);
+      return true;
+    } catch (Exception ex) {
+      ex.printStackTrace();
+      return false;
+    }
+  }
+
+  public static boolean canDiscoverWithGetDeclaredMethod(Class<?> klass, String name) {
+    try {
+      klass.getDeclaredMethod(name);
+      return true;
+    } catch (NoSuchMethodException ex) {
+      return false;
+    }
+  }
+
+  public static boolean canDiscoverWithGetDeclaredMethods(Class<?> klass, String name) {
+    for (Method m : klass.getDeclaredMethods()) {
+      if (m.getName().equals(name)) {
+        return true;
+      }
+    }
+    return false;
+  }
+
+  public static boolean canDiscoverWithGetMethod(Class<?> klass, String name) {
+    try {
+      klass.getMethod(name);
+      return true;
+    } catch (NoSuchMethodException ex) {
+      return false;
+    }
+  }
+
+  public static boolean canDiscoverWithGetMethods(Class<?> klass, String name) {
+    for (Method m : klass.getMethods()) {
+      if (m.getName().equals(name)) {
+        return true;
+      }
+    }
+    return false;
+  }
+
+  public static boolean canInvokeMethod(Class<?> klass, String name) {
+    try {
+      Method m = klass.getDeclaredMethod(name);
+      m.setAccessible(true);
+      m.invoke(klass.isInterface() ? null : klass.newInstance());
+      return true;
+    } catch (Exception ex) {
+      ex.printStackTrace();
+      return false;
+    }
+  }
+
+  public static boolean canDiscoverWithGetDeclaredConstructor(Class<?> klass, Class<?> args[]) {
+    try {
+      klass.getDeclaredConstructor(args);
+      return true;
+    } catch (NoSuchMethodException ex) {
+      return false;
+    }
+  }
+
+  public static boolean canDiscoverWithGetDeclaredConstructors(Class<?> klass, Class<?> args[]) {
+    for (Constructor c : klass.getDeclaredConstructors()) {
+      if (Arrays.equals(c.getParameterTypes(), args)) {
+        return true;
+      }
+    }
+    return false;
+  }
+
+  public static boolean canDiscoverWithGetConstructor(Class<?> klass, Class<?> args[]) {
+    try {
+      klass.getConstructor(args);
+      return true;
+    } catch (NoSuchMethodException ex) {
+      return false;
+    }
+  }
+
+  public static boolean canDiscoverWithGetConstructors(Class<?> klass, Class<?> args[]) {
+    for (Constructor c : klass.getConstructors()) {
+      if (Arrays.equals(c.getParameterTypes(), args)) {
+        return true;
+      }
+    }
+    return false;
+  }
+
+  public static boolean canInvokeConstructor(Class<?> klass, Class<?> args[], Object[] initargs) {
+    try {
+      Constructor c = klass.getDeclaredConstructor(args);
+      c.setAccessible(true);
+      c.newInstance(initargs);
+      return true;
+    } catch (Exception ex) {
+      ex.printStackTrace();
+      return false;
+    }
+  }
+
+  public static boolean canUseNewInstance(Class<?> klass) throws IllegalAccessException {
+    try {
+      klass.newInstance();
+      return true;
+    } catch (InstantiationException ex) {
+      return false;
+    }
+  }
+
+  private static native int getHiddenApiAccessFlags();
+
+  public static boolean canObserveFieldHiddenAccessFlags(Class<?> klass, String name)
+      throws Exception {
+    return (klass.getDeclaredField(name).getModifiers() & getHiddenApiAccessFlags()) != 0;
+  }
+
+  public static boolean canObserveMethodHiddenAccessFlags(Class<?> klass, String name)
+      throws Exception {
+    return (klass.getDeclaredMethod(name).getModifiers() & getHiddenApiAccessFlags()) != 0;
+  }
+
+  public static boolean canObserveConstructorHiddenAccessFlags(Class<?> klass, Class<?> args[])
+      throws Exception {
+    return (klass.getConstructor(args).getModifiers() & getHiddenApiAccessFlags()) != 0;
+  }
+}