--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jvmci/jdk.vm.ci.meta/src/jdk/vm/ci/meta/ModifiersProvider.java	Thu Oct 08 17:28:41 2015 -0700
@@ -0,0 +1,177 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+package jdk.vm.ci.meta;
+
+import static java.lang.reflect.Modifier.ABSTRACT;
+import static java.lang.reflect.Modifier.FINAL;
+import static java.lang.reflect.Modifier.INTERFACE;
+import static java.lang.reflect.Modifier.NATIVE;
+import static java.lang.reflect.Modifier.PRIVATE;
+import static java.lang.reflect.Modifier.PROTECTED;
+import static java.lang.reflect.Modifier.PUBLIC;
+import static java.lang.reflect.Modifier.STATIC;
+import static java.lang.reflect.Modifier.STRICT;
+import static java.lang.reflect.Modifier.SYNCHRONIZED;
+import static java.lang.reflect.Modifier.TRANSIENT;
+import static java.lang.reflect.Modifier.VOLATILE;
+
+import java.lang.reflect.Modifier;
+
+/**
+ * A Java element (i.e., a class, interface, field or method) that is described by a set of Java
+ * language {@linkplain #getModifiers() modifiers}.
+ */
+public interface ModifiersProvider {
+    int BRIDGE = MetaUtil.getNonPublicModifierStaticField("BRIDGE");
+    int VARARGS = MetaUtil.getNonPublicModifierStaticField("VARARGS");
+    int SYNTHETIC = MetaUtil.getNonPublicModifierStaticField("SYNTHETIC");
+    int ANNOTATION = MetaUtil.getNonPublicModifierStaticField("ANNOTATION");
+    int ENUM = MetaUtil.getNonPublicModifierStaticField("ENUM");
+    int MANDATED = MetaUtil.getNonPublicModifierStaticField("MANDATED");
+
+    /**
+     * Returns the Java Virtual Machine modifiers for this element. Note that this can differ from
+     * standard Java Reflection modifiers. For example at the JVM level, classes (
+     * {@link ResolvedJavaType}) can not be private or protected.
+     */
+    int getModifiers();
+
+    /**
+     * @see Modifier#isInterface(int)
+     */
+    default boolean isInterface() {
+        return Modifier.isInterface(getModifiers());
+    }
+
+    /**
+     * @see Modifier#isSynchronized(int)
+     */
+    default boolean isSynchronized() {
+        return Modifier.isSynchronized(getModifiers());
+    }
+
+    /**
+     * @see Modifier#isStatic(int)
+     */
+    default boolean isStatic() {
+        return Modifier.isStatic(getModifiers());
+    }
+
+    /**
+     * The setting of the final modifier bit for types is somewhat confusing, so don't export
+     * isFinal by default. Subclasses like {@link ResolvedJavaField} and {@link ResolvedJavaMethod}
+     * can export it as isFinal, but {@link ResolvedJavaType} can provide a more sensible equivalent
+     * like {@link ResolvedJavaType#isLeaf}.
+     *
+     * @see Modifier#isFinal(int)
+     */
+    default boolean isFinalFlagSet() {
+        return Modifier.isFinal(getModifiers());
+    }
+
+    /**
+     * @see Modifier#isPublic(int)
+     */
+    default boolean isPublic() {
+        return Modifier.isPublic(getModifiers());
+    }
+
+    /**
+     * Determines if this element is neither {@linkplain #isPublic() public},
+     * {@linkplain #isProtected() protected} nor {@linkplain #isPrivate() private}.
+     */
+    default boolean isPackagePrivate() {
+        return ((PUBLIC | PROTECTED | PRIVATE) & getModifiers()) == 0;
+    }
+
+    /**
+     * @see Modifier#isPrivate(int)
+     */
+    default boolean isPrivate() {
+        return Modifier.isPrivate(getModifiers());
+    }
+
+    /**
+     * @see Modifier#isProtected(int)
+     */
+    default boolean isProtected() {
+        return Modifier.isProtected(getModifiers());
+    }
+
+    /**
+     * @see Modifier#isTransient(int)
+     */
+    default boolean isTransient() {
+        return Modifier.isTransient(getModifiers());
+    }
+
+    /**
+     * @see Modifier#isStrict(int)
+     */
+    default boolean isStrict() {
+        return Modifier.isStrict(getModifiers());
+    }
+
+    /**
+     * @see Modifier#isVolatile(int)
+     */
+    default boolean isVolatile() {
+        return Modifier.isVolatile(getModifiers());
+    }
+
+    /**
+     * @see Modifier#isNative(int)
+     */
+    default boolean isNative() {
+        return Modifier.isNative(getModifiers());
+    }
+
+    /**
+     * @see Modifier#isAbstract(int)
+     */
+    default boolean isAbstract() {
+        return Modifier.isAbstract(getModifiers());
+    }
+
+    /**
+     * Checks that the method is concrete and not abstract.
+     *
+     * @return whether the method is a concrete method
+     */
+    default boolean isConcrete() {
+        return !isAbstract();
+    }
+
+    static int jvmClassModifiers() {
+        // no SUPER
+        return PUBLIC | FINAL | INTERFACE | ABSTRACT | ANNOTATION | ENUM | SYNTHETIC;
+    }
+
+    static int jvmMethodModifiers() {
+        return PUBLIC | PRIVATE | PROTECTED | STATIC | FINAL | SYNCHRONIZED | BRIDGE | VARARGS | NATIVE | ABSTRACT | STRICT | SYNTHETIC;
+    }
+
+    static int jvmFieldModifiers() {
+        return PUBLIC | PRIVATE | PROTECTED | STATIC | FINAL | VOLATILE | TRANSIENT | ENUM | SYNTHETIC;
+    }
+}