1 /* 2 * Copyright (c) 2019, 2020, 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. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 package jdk.internal.foreign.abi; 24 25 import jdk.incubator.foreign.FunctionDescriptor; 26 27 import java.lang.invoke.MethodType; 28 import java.util.List; 29 import java.util.stream.Stream; 30 31 public class CallingSequence { 32 private final MethodType mt; 33 private final FunctionDescriptor desc; 34 35 private final List<Binding> returnBindings; 36 private final List<List<Binding>> argumentBindings; 37 38 public CallingSequence(MethodType mt, FunctionDescriptor desc, 39 List<List<Binding>> argumentBindings, List<Binding> returnBindings) { 40 this.mt = mt; 41 this.desc = desc; 42 this.returnBindings = returnBindings; 43 this.argumentBindings = argumentBindings; 44 } 45 46 public Stream<Binding.Move> moveBindings() { 47 return argumentBindings.stream() 48 .flatMap(List::stream) 49 .filter(Binding.Move.class::isInstance) 50 .map(Binding.Move.class::cast); 51 } 52 53 public int argumentCount() { 54 return argumentBindings.size(); 55 } 56 57 public List<Binding> argumentBindings(int i) { 58 return argumentBindings.get(i); 59 } 60 61 public List<Binding> returnBindings() { 62 return returnBindings; 63 } 64 65 public String asString() { 66 StringBuilder sb = new StringBuilder(); 67 68 sb.append("CallingSequence: {\n"); 69 sb.append(" MethodType: ").append(mt); 70 sb.append(" FunctionDescriptor: ").append(desc); 71 sb.append(" Argument Bindings:\n"); 72 for (int i = 0; i < mt.parameterCount(); i++) { 73 sb.append(" ").append(i).append(": ").append(argumentBindings.get(i)).append("\n"); 74 } 75 if (mt.returnType() != void.class) { 76 sb.append(" ").append("Return: ").append(returnBindings).append("\n"); 77 } 78 sb.append("}\n"); 79 80 return sb.toString(); 81 } 82 83 public MethodType methodType() { 84 return mt; 85 } 86 87 public FunctionDescriptor functionDesc() { 88 return desc; 89 } 90 }