--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/jdk.dynalink/share/classes/jdk/dynalink/beans/FacetIntrospector.java Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,184 @@
+/*
+ * Copyright (c) 2010, 2013, 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. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * 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.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file, and Oracle licenses the original version of this file under the BSD
+ * license:
+ */
+/*
+ Copyright 2009-2013 Attila Szegedi
+
+ Licensed under both the Apache License, Version 2.0 (the "Apache License")
+ and the BSD License (the "BSD License"), with licensee being free to
+ choose either of the two at their discretion.
+
+ You may not use this file except in compliance with either the Apache
+ License or the BSD License.
+
+ If you choose to use this file in compliance with the Apache License, the
+ following notice applies to you:
+
+ You may obtain a copy of the Apache 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.
+
+ If you choose to use this file in compliance with the BSD License, the
+ following notice applies to you:
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of the copyright holder nor the names of
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
+ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package jdk.dynalink.beans;
+
+import java.lang.invoke.MethodHandle;
+import java.lang.reflect.Field;
+import java.lang.reflect.Member;
+import java.lang.reflect.Method;
+import java.lang.reflect.Modifier;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.Map;
+import jdk.dynalink.linker.support.Lookup;
+
+/**
+ * Base for classes that expose class field and method information to an {@link AbstractJavaLinker}. There are
+ * subclasses for instance (bean) and static facet of a class.
+ */
+abstract class FacetIntrospector {
+ private final Class<?> clazz;
+ private final boolean instance;
+ private final boolean isRestricted;
+
+ protected final AccessibleMembersLookup membersLookup;
+
+ FacetIntrospector(final Class<?> clazz, final boolean instance) {
+ this.clazz = clazz;
+ this.instance = instance;
+ isRestricted = CheckRestrictedPackage.isRestrictedClass(clazz);
+ membersLookup = new AccessibleMembersLookup(clazz, instance);
+ }
+
+ /**
+ * Returns getters for inner classes.
+ * @return getters for inner classes.
+ */
+ abstract Map<String, MethodHandle> getInnerClassGetters();
+
+ /**
+ * Returns the fields for the class facet.
+ * @return the fields for the class facet.
+ */
+ Collection<Field> getFields() {
+ if(isRestricted) {
+ // NOTE: we can't do anything here. Unlike with methods in AccessibleMethodsLookup, we can't just return
+ // the fields from a public superclass, because this class might define same-named fields which will shadow
+ // the superclass fields, and we have no way to know if they do, since we're denied invocation of
+ // getFields(). Therefore, the only correct course of action is to not expose any public fields from a class
+ // defined in a restricted package.
+ return Collections.emptySet();
+ }
+
+ final Field[] fields = clazz.getFields();
+ final Collection<Field> cfields = new ArrayList<>(fields.length);
+ for(final Field field: fields) {
+ final boolean isStatic = Modifier.isStatic(field.getModifiers());
+ if(isStatic && clazz != field.getDeclaringClass()) {
+ // ignore inherited static fields
+ continue;
+ }
+
+ if(instance != isStatic && isAccessible(field)) {
+ cfields.add(field);
+ }
+ }
+ return cfields;
+ }
+
+ boolean isAccessible(final Member m) {
+ final Class<?> declaring = m.getDeclaringClass();
+ // (declaring == clazz) is just an optimization - we're calling this only from code that operates on a
+ // non-restricted class, so if the declaring class is identical to the class being inspected, then forego
+ // a potentially expensive restricted-package check.
+ return declaring == clazz || !CheckRestrictedPackage.isRestrictedClass(declaring);
+ }
+
+ /**
+ * Returns all the methods in the facet.
+ * @return all the methods in the facet.
+ */
+ Collection<Method> getMethods() {
+ return membersLookup.getMethods();
+ }
+
+
+ MethodHandle unreflectGetter(final Field field) {
+ return editMethodHandle(Lookup.PUBLIC.unreflectGetter(field));
+ }
+
+ MethodHandle unreflectSetter(final Field field) {
+ return editMethodHandle(Lookup.PUBLIC.unreflectSetter(field));
+ }
+
+ /**
+ * Returns an edited method handle. A facet might need to edit an unreflected method handle before it is usable with
+ * the facet. By default, returns the passed method handle unchanged. The class' static facet will introduce a
+ * dropArguments.
+ * @param mh the method handle to edit.
+ * @return the edited method handle.
+ */
+ abstract MethodHandle editMethodHandle(MethodHandle mh);
+}