jaroslav@1646: /*
jaroslav@1646:  * Copyright (c) 2011, 2012, Oracle and/or its affiliates. All rights reserved.
jaroslav@1646:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
jaroslav@1646:  *
jaroslav@1646:  * This code is free software; you can redistribute it and/or modify it
jaroslav@1646:  * under the terms of the GNU General Public License version 2 only, as
jaroslav@1646:  * published by the Free Software Foundation.  Oracle designates this
jaroslav@1646:  * particular file as subject to the "Classpath" exception as provided
jaroslav@1646:  * by Oracle in the LICENSE file that accompanied this code.
jaroslav@1646:  *
jaroslav@1646:  * This code is distributed in the hope that it will be useful, but WITHOUT
jaroslav@1646:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
jaroslav@1646:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
jaroslav@1646:  * version 2 for more details (a copy is included in the LICENSE file that
jaroslav@1646:  * accompanied this code).
jaroslav@1646:  *
jaroslav@1646:  * You should have received a copy of the GNU General Public License version
jaroslav@1646:  * 2 along with this work; if not, write to the Free Software Foundation,
jaroslav@1646:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
jaroslav@1646:  *
jaroslav@1646:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
jaroslav@1646:  * or visit www.oracle.com if you need additional information or have any
jaroslav@1646:  * questions.
jaroslav@1646:  */
jaroslav@1646: 
jaroslav@1646: package java.lang.invoke;
jaroslav@1646: 
jaroslav@1646: import java.security.AccessController;
jaroslav@1646: import java.security.PrivilegedAction;
jaroslav@1646: import sun.misc.Unsafe;
jaroslav@1646: 
jaroslav@1646: /**
jaroslav@1646:  * This class consists exclusively of static names internal to the
jaroslav@1646:  * method handle implementation.
jaroslav@1646:  * Usage:  {@code import static java.lang.invoke.MethodHandleStatics.*}
jaroslav@1646:  * @author John Rose, JSR 292 EG
jaroslav@1646:  */
jaroslav@1646: /*non-public*/ class MethodHandleStatics {
jaroslav@1646: 
jaroslav@1646:     private MethodHandleStatics() { }  // do not instantiate
jaroslav@1646: 
jaroslav@1646:     static final Unsafe UNSAFE = Unsafe.getUnsafe();
jaroslav@1646: 
jaroslav@1646:     static final boolean DEBUG_METHOD_HANDLE_NAMES;
jaroslav@1646:     static final boolean DUMP_CLASS_FILES;
jaroslav@1646:     static final boolean TRACE_INTERPRETER;
jaroslav@1646:     static final boolean TRACE_METHOD_LINKAGE;
jaroslav@1646:     static final Integer COMPILE_THRESHOLD;
jaroslav@1646:     static {
jaroslav@1646:         final Object[] values = { false, false, false, false, null };
jaroslav@1646:         AccessController.doPrivileged(new PrivilegedAction<Void>() {
jaroslav@1646:                 public Void run() {
jaroslav@1646:                     values[0] = Boolean.getBoolean("java.lang.invoke.MethodHandle.DEBUG_NAMES");
jaroslav@1646:                     values[1] = Boolean.getBoolean("java.lang.invoke.MethodHandle.DUMP_CLASS_FILES");
jaroslav@1646:                     values[2] = Boolean.getBoolean("java.lang.invoke.MethodHandle.TRACE_INTERPRETER");
jaroslav@1646:                     values[3] = Boolean.getBoolean("java.lang.invoke.MethodHandle.TRACE_METHOD_LINKAGE");
jaroslav@1646:                     values[4] = Integer.getInteger("java.lang.invoke.MethodHandle.COMPILE_THRESHOLD");
jaroslav@1646:                     return null;
jaroslav@1646:                 }
jaroslav@1646:             });
jaroslav@1646:         DEBUG_METHOD_HANDLE_NAMES = (Boolean) values[0];
jaroslav@1646:         DUMP_CLASS_FILES          = (Boolean) values[1];
jaroslav@1646:         TRACE_INTERPRETER         = (Boolean) values[2];
jaroslav@1646:         TRACE_METHOD_LINKAGE      = (Boolean) values[3];
jaroslav@1646:         COMPILE_THRESHOLD         = (Integer) values[4];
jaroslav@1646:     }
jaroslav@1646: 
jaroslav@1646:     /*non-public*/ static String getNameString(MethodHandle target, MethodType type) {
jaroslav@1646:         if (type == null)
jaroslav@1646:             type = target.type();
jaroslav@1646:         MemberName name = null;
jaroslav@1646:         if (target != null)
jaroslav@1646:             name = target.internalMemberName();
jaroslav@1646:         if (name == null)
jaroslav@1646:             return "invoke" + type;
jaroslav@1646:         return name.getName() + type;
jaroslav@1646:     }
jaroslav@1646: 
jaroslav@1646:     /*non-public*/ static String getNameString(MethodHandle target, MethodHandle typeHolder) {
jaroslav@1646:         return getNameString(target, typeHolder == null ? (MethodType) null : typeHolder.type());
jaroslav@1646:     }
jaroslav@1646: 
jaroslav@1646:     /*non-public*/ static String getNameString(MethodHandle target) {
jaroslav@1646:         return getNameString(target, (MethodType) null);
jaroslav@1646:     }
jaroslav@1646: 
jaroslav@1646:     /*non-public*/ static String addTypeString(Object obj, MethodHandle target) {
jaroslav@1646:         String str = String.valueOf(obj);
jaroslav@1646:         if (target == null)  return str;
jaroslav@1646:         int paren = str.indexOf('(');
jaroslav@1646:         if (paren >= 0) str = str.substring(0, paren);
jaroslav@1646:         return str + target.type();
jaroslav@1646:     }
jaroslav@1646: 
jaroslav@1646:     // handy shared exception makers (they simplify the common case code)
jaroslav@1646:     /*non-public*/ static InternalError newInternalError(String message, Throwable cause) {
jaroslav@1646:         return new InternalError(message, cause);
jaroslav@1646:     }
jaroslav@1646:     /*non-public*/ static InternalError newInternalError(Throwable cause) {
jaroslav@1646:         return new InternalError(cause);
jaroslav@1646:     }
jaroslav@1646:     /*non-public*/ static RuntimeException newIllegalStateException(String message) {
jaroslav@1646:         return new IllegalStateException(message);
jaroslav@1646:     }
jaroslav@1646:     /*non-public*/ static RuntimeException newIllegalStateException(String message, Object obj) {
jaroslav@1646:         return new IllegalStateException(message(message, obj));
jaroslav@1646:     }
jaroslav@1646:     /*non-public*/ static RuntimeException newIllegalArgumentException(String message) {
jaroslav@1646:         return new IllegalArgumentException(message);
jaroslav@1646:     }
jaroslav@1646:     /*non-public*/ static RuntimeException newIllegalArgumentException(String message, Object obj) {
jaroslav@1646:         return new IllegalArgumentException(message(message, obj));
jaroslav@1646:     }
jaroslav@1646:     /*non-public*/ static RuntimeException newIllegalArgumentException(String message, Object obj, Object obj2) {
jaroslav@1646:         return new IllegalArgumentException(message(message, obj, obj2));
jaroslav@1646:     }
jaroslav@1646:     /*non-public*/ static Error uncaughtException(Throwable ex) {
jaroslav@1646:         throw newInternalError("uncaught exception", ex);
jaroslav@1646:     }
jaroslav@1646:     static Error NYI() {
jaroslav@1646:         throw new AssertionError("NYI");
jaroslav@1646:     }
jaroslav@1646:     private static String message(String message, Object obj) {
jaroslav@1646:         if (obj != null)  message = message + ": " + obj;
jaroslav@1646:         return message;
jaroslav@1646:     }
jaroslav@1646:     private static String message(String message, Object obj, Object obj2) {
jaroslav@1646:         if (obj != null || obj2 != null)  message = message + ": " + obj + ", " + obj2;
jaroslav@1646:         return message;
jaroslav@1646:     }
jaroslav@1646: }