1 /* 2 * Copyright (c) 2008, 2012, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package java.lang.invoke; 27 28 import jdk.internal.vm.annotation.Stable; 29 30 import static java.lang.invoke.LambdaForm.BasicType.*; 31 import static java.lang.invoke.MethodHandleStatics.*; 32 33 /** 34 * A method handle whose behavior is determined only by its LambdaForm. 35 * @author jrose 36 */ 37 final class SimpleMethodHandle extends BoundMethodHandle { 38 39 private SimpleMethodHandle(MethodType type, LambdaForm form) { 40 super(type, form); 41 } 42 43 /*non-public*/ static BoundMethodHandle make(MethodType type, LambdaForm form) { 44 return new SimpleMethodHandle(type, form); 45 } 46 47 /*non-public*/ static @Stable BoundMethodHandle.SpeciesData BMH_SPECIES; 48 49 @Override 50 /*non-public*/ BoundMethodHandle.SpeciesData speciesData() { 51 return BMH_SPECIES; 52 } 53 54 @Override 55 /*non-public*/ BoundMethodHandle copyWith(MethodType mt, LambdaForm lf) { 56 return make(mt, lf); 57 } 58 59 @Override 60 String internalProperties() { 61 return "\n& Class="+getClass().getSimpleName(); 62 } 63 64 @Override 65 /*non-public*/ final BoundMethodHandle copyWithExtendL(MethodType mt, LambdaForm lf, Object narg) { 66 return BoundMethodHandle.bindSingle(mt, lf, narg); // Use known fast path. 67 } 68 @Override 69 /*non-public*/ final BoundMethodHandle copyWithExtendI(MethodType mt, LambdaForm lf, int narg) { 70 try { 71 return (BoundMethodHandle) BMH_SPECIES.extendWith(I_TYPE_NUM).factory().invokeBasic(mt, lf, narg); 72 } catch (Throwable ex) { 73 throw uncaughtException(ex); 74 } 75 } 76 @Override 77 /*non-public*/ final BoundMethodHandle copyWithExtendJ(MethodType mt, LambdaForm lf, long narg) { 78 try { 79 return (BoundMethodHandle) BMH_SPECIES.extendWith(J_TYPE_NUM).factory().invokeBasic(mt, lf, narg); 80 } catch (Throwable ex) { 81 throw uncaughtException(ex); 82 } 83 } 84 @Override 85 /*non-public*/ final BoundMethodHandle copyWithExtendF(MethodType mt, LambdaForm lf, float narg) { 86 try { 87 return (BoundMethodHandle) BMH_SPECIES.extendWith(F_TYPE_NUM).factory().invokeBasic(mt, lf, narg); 88 } catch (Throwable ex) { 89 throw uncaughtException(ex); 90 } 91 } 92 @Override 93 /*non-public*/ final BoundMethodHandle copyWithExtendD(MethodType mt, LambdaForm lf, double narg) { 94 try { 95 return (BoundMethodHandle) BMH_SPECIES.extendWith(D_TYPE_NUM).factory().invokeBasic(mt, lf, narg); 96 } catch (Throwable ex) { 97 throw uncaughtException(ex); 98 } 99 } 100 }