1.1 --- a/rt/emul/compact/src/main/java/java/lang/invoke/InfoFromMemberName.java Sun Aug 17 20:09:05 2014 +0200
1.2 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000
1.3 @@ -1,145 +0,0 @@
1.4 -/*
1.5 - * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
1.6 - * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 - *
1.8 - * This code is free software; you can redistribute it and/or modify it
1.9 - * under the terms of the GNU General Public License version 2 only, as
1.10 - * published by the Free Software Foundation. Oracle designates this
1.11 - * particular file as subject to the "Classpath" exception as provided
1.12 - * by Oracle in the LICENSE file that accompanied this code.
1.13 - *
1.14 - * This code is distributed in the hope that it will be useful, but WITHOUT
1.15 - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.16 - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.17 - * version 2 for more details (a copy is included in the LICENSE file that
1.18 - * accompanied this code).
1.19 - *
1.20 - * You should have received a copy of the GNU General Public License version
1.21 - * 2 along with this work; if not, write to the Free Software Foundation,
1.22 - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.23 - *
1.24 - * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.25 - * or visit www.oracle.com if you need additional information or have any
1.26 - * questions.
1.27 - */
1.28 -
1.29 -package java.lang.invoke;
1.30 -
1.31 -import java.security.*;
1.32 -import java.lang.reflect.*;
1.33 -import java.lang.invoke.MethodHandleNatives.Constants;
1.34 -import java.lang.invoke.MethodHandles.Lookup;
1.35 -import static java.lang.invoke.MethodHandleStatics.*;
1.36 -
1.37 -/*
1.38 - * Auxiliary to MethodHandleInfo, wants to nest in MethodHandleInfo but must be non-public.
1.39 - */
1.40 -/*non-public*/
1.41 -final
1.42 -class InfoFromMemberName implements MethodHandleInfo {
1.43 - private final MemberName member;
1.44 - private final int referenceKind;
1.45 -
1.46 - InfoFromMemberName(Lookup lookup, MemberName member, byte referenceKind) {
1.47 - assert(member.isResolved() || member.isMethodHandleInvoke());
1.48 - assert(member.referenceKindIsConsistentWith(referenceKind));
1.49 - this.member = member;
1.50 - this.referenceKind = referenceKind;
1.51 - }
1.52 -
1.53 - @Override
1.54 - public Class<?> getDeclaringClass() {
1.55 - return member.getDeclaringClass();
1.56 - }
1.57 -
1.58 - @Override
1.59 - public String getName() {
1.60 - return member.getName();
1.61 - }
1.62 -
1.63 - @Override
1.64 - public MethodType getMethodType() {
1.65 - return member.getMethodOrFieldType();
1.66 - }
1.67 -
1.68 - @Override
1.69 - public int getModifiers() {
1.70 - return member.getModifiers();
1.71 - }
1.72 -
1.73 - @Override
1.74 - public int getReferenceKind() {
1.75 - return referenceKind;
1.76 - }
1.77 -
1.78 - @Override
1.79 - public String toString() {
1.80 - return MethodHandleInfo.toString(getReferenceKind(), getDeclaringClass(), getName(), getMethodType());
1.81 - }
1.82 -
1.83 - @Override
1.84 - public <T extends Member> T reflectAs(Class<T> expected, Lookup lookup) {
1.85 - if (member.isMethodHandleInvoke() && !member.isVarargs()) {
1.86 - // This member is an instance of a signature-polymorphic method, which cannot be reflected
1.87 - // A method handle invoker can come in either of two forms:
1.88 - // A generic placeholder (present in the source code, and varargs)
1.89 - // and a signature-polymorphic instance (synthetic and not varargs).
1.90 - // For more information see comments on {@link MethodHandleNatives#linkMethod}.
1.91 - throw new IllegalArgumentException("cannot reflect signature polymorphic method");
1.92 - }
1.93 - Member mem = AccessController.doPrivileged(new PrivilegedAction<Member>() {
1.94 - public Member run() {
1.95 - try {
1.96 - return reflectUnchecked();
1.97 - } catch (ReflectiveOperationException ex) {
1.98 - throw new IllegalArgumentException(ex);
1.99 - }
1.100 - }
1.101 - });
1.102 - try {
1.103 - Class<?> defc = getDeclaringClass();
1.104 - byte refKind = (byte) getReferenceKind();
1.105 - lookup.checkAccess(refKind, defc, convertToMemberName(refKind, mem));
1.106 - } catch (IllegalAccessException ex) {
1.107 - throw new IllegalArgumentException(ex);
1.108 - }
1.109 - return expected.cast(mem);
1.110 - }
1.111 -
1.112 - private Member reflectUnchecked() throws ReflectiveOperationException {
1.113 - byte refKind = (byte) getReferenceKind();
1.114 - Class<?> defc = getDeclaringClass();
1.115 - boolean isPublic = Modifier.isPublic(getModifiers());
1.116 - if (MethodHandleNatives.refKindIsMethod(refKind)) {
1.117 - if (isPublic)
1.118 - return defc.getMethod(getName(), getMethodType().parameterArray());
1.119 - else
1.120 - return defc.getDeclaredMethod(getName(), getMethodType().parameterArray());
1.121 - } else if (MethodHandleNatives.refKindIsConstructor(refKind)) {
1.122 - if (isPublic)
1.123 - return defc.getConstructor(getMethodType().parameterArray());
1.124 - else
1.125 - return defc.getDeclaredConstructor(getMethodType().parameterArray());
1.126 - } else if (MethodHandleNatives.refKindIsField(refKind)) {
1.127 - if (isPublic)
1.128 - return defc.getField(getName());
1.129 - else
1.130 - return defc.getDeclaredField(getName());
1.131 - } else {
1.132 - throw new IllegalArgumentException("referenceKind="+refKind);
1.133 - }
1.134 - }
1.135 -
1.136 - private static MemberName convertToMemberName(byte refKind, Member mem) throws IllegalAccessException {
1.137 - if (mem instanceof Method) {
1.138 - boolean wantSpecial = (refKind == REF_invokeSpecial);
1.139 - return new MemberName((Method) mem, wantSpecial);
1.140 - } else if (mem instanceof Constructor) {
1.141 - return new MemberName((Constructor) mem);
1.142 - } else if (mem instanceof Field) {
1.143 - boolean isSetter = (refKind == REF_putField || refKind == REF_putStatic);
1.144 - return new MemberName((Field) mem, isSetter);
1.145 - }
1.146 - throw new InternalError(mem.getClass().getName());
1.147 - }
1.148 -}