1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/rt/emul/compact/src/main/java/java/lang/invoke/MethodHandleStatics.java Sat Aug 09 11:11:13 2014 +0200
1.3 @@ -0,0 +1,131 @@
1.4 +/*
1.5 + * Copyright (c) 2011, 2012, 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.AccessController;
1.32 +import java.security.PrivilegedAction;
1.33 +import sun.misc.Unsafe;
1.34 +
1.35 +/**
1.36 + * This class consists exclusively of static names internal to the
1.37 + * method handle implementation.
1.38 + * Usage: {@code import static java.lang.invoke.MethodHandleStatics.*}
1.39 + * @author John Rose, JSR 292 EG
1.40 + */
1.41 +/*non-public*/ class MethodHandleStatics {
1.42 +
1.43 + private MethodHandleStatics() { } // do not instantiate
1.44 +
1.45 + static final Unsafe UNSAFE = Unsafe.getUnsafe();
1.46 +
1.47 + static final boolean DEBUG_METHOD_HANDLE_NAMES;
1.48 + static final boolean DUMP_CLASS_FILES;
1.49 + static final boolean TRACE_INTERPRETER;
1.50 + static final boolean TRACE_METHOD_LINKAGE;
1.51 + static final Integer COMPILE_THRESHOLD;
1.52 + static {
1.53 + final Object[] values = { false, false, false, false, null };
1.54 + AccessController.doPrivileged(new PrivilegedAction<Void>() {
1.55 + public Void run() {
1.56 + values[0] = Boolean.getBoolean("java.lang.invoke.MethodHandle.DEBUG_NAMES");
1.57 + values[1] = Boolean.getBoolean("java.lang.invoke.MethodHandle.DUMP_CLASS_FILES");
1.58 + values[2] = Boolean.getBoolean("java.lang.invoke.MethodHandle.TRACE_INTERPRETER");
1.59 + values[3] = Boolean.getBoolean("java.lang.invoke.MethodHandle.TRACE_METHOD_LINKAGE");
1.60 + values[4] = Integer.getInteger("java.lang.invoke.MethodHandle.COMPILE_THRESHOLD");
1.61 + return null;
1.62 + }
1.63 + });
1.64 + DEBUG_METHOD_HANDLE_NAMES = (Boolean) values[0];
1.65 + DUMP_CLASS_FILES = (Boolean) values[1];
1.66 + TRACE_INTERPRETER = (Boolean) values[2];
1.67 + TRACE_METHOD_LINKAGE = (Boolean) values[3];
1.68 + COMPILE_THRESHOLD = (Integer) values[4];
1.69 + }
1.70 +
1.71 + /*non-public*/ static String getNameString(MethodHandle target, MethodType type) {
1.72 + if (type == null)
1.73 + type = target.type();
1.74 + MemberName name = null;
1.75 + if (target != null)
1.76 + name = target.internalMemberName();
1.77 + if (name == null)
1.78 + return "invoke" + type;
1.79 + return name.getName() + type;
1.80 + }
1.81 +
1.82 + /*non-public*/ static String getNameString(MethodHandle target, MethodHandle typeHolder) {
1.83 + return getNameString(target, typeHolder == null ? (MethodType) null : typeHolder.type());
1.84 + }
1.85 +
1.86 + /*non-public*/ static String getNameString(MethodHandle target) {
1.87 + return getNameString(target, (MethodType) null);
1.88 + }
1.89 +
1.90 + /*non-public*/ static String addTypeString(Object obj, MethodHandle target) {
1.91 + String str = String.valueOf(obj);
1.92 + if (target == null) return str;
1.93 + int paren = str.indexOf('(');
1.94 + if (paren >= 0) str = str.substring(0, paren);
1.95 + return str + target.type();
1.96 + }
1.97 +
1.98 + // handy shared exception makers (they simplify the common case code)
1.99 + /*non-public*/ static InternalError newInternalError(String message, Throwable cause) {
1.100 + return new InternalError(message, cause);
1.101 + }
1.102 + /*non-public*/ static InternalError newInternalError(Throwable cause) {
1.103 + return new InternalError(cause);
1.104 + }
1.105 + /*non-public*/ static RuntimeException newIllegalStateException(String message) {
1.106 + return new IllegalStateException(message);
1.107 + }
1.108 + /*non-public*/ static RuntimeException newIllegalStateException(String message, Object obj) {
1.109 + return new IllegalStateException(message(message, obj));
1.110 + }
1.111 + /*non-public*/ static RuntimeException newIllegalArgumentException(String message) {
1.112 + return new IllegalArgumentException(message);
1.113 + }
1.114 + /*non-public*/ static RuntimeException newIllegalArgumentException(String message, Object obj) {
1.115 + return new IllegalArgumentException(message(message, obj));
1.116 + }
1.117 + /*non-public*/ static RuntimeException newIllegalArgumentException(String message, Object obj, Object obj2) {
1.118 + return new IllegalArgumentException(message(message, obj, obj2));
1.119 + }
1.120 + /*non-public*/ static Error uncaughtException(Throwable ex) {
1.121 + throw newInternalError("uncaught exception", ex);
1.122 + }
1.123 + static Error NYI() {
1.124 + throw new AssertionError("NYI");
1.125 + }
1.126 + private static String message(String message, Object obj) {
1.127 + if (obj != null) message = message + ": " + obj;
1.128 + return message;
1.129 + }
1.130 + private static String message(String message, Object obj, Object obj2) {
1.131 + if (obj != null || obj2 != null) message = message + ": " + obj + ", " + obj2;
1.132 + return message;
1.133 + }
1.134 +}