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.IntStream; 30 import java.util.stream.Stream; 31 32 public class CallingSequence { 33 private final MethodType mt; 34 private final FunctionDescriptor desc; 35 36 private final List<Binding> returnBindings; 37 private final List<List<Binding>> argumentBindings; 38 39 public CallingSequence(MethodType mt, FunctionDescriptor desc, 40 List<List<Binding>> argumentBindings, List<Binding> returnBindings) { 41 this.mt = mt; 42 this.desc = desc; 43 this.returnBindings = returnBindings; 44 this.argumentBindings = argumentBindings; 45 } 46 47 public Stream<Binding.Move> argMoveBindings() { 48 return argumentBindings.stream() 49 .flatMap(List::stream) 50 .filter(Binding.Move.class::isInstance) 51 .map(Binding.Move.class::cast); 52 } 53 54 public Stream<Binding.Move> retMoveBindings() { 55 return returnBindings() 56 .stream() 57 .filter(Binding.Move.class::isInstance) 58 .map(Binding.Move.class::cast); 59 } 60 61 public int argumentCount() { 62 return argumentBindings.size(); 63 } 64 65 public List<Binding> argumentBindings(int i) { 66 return argumentBindings.get(i); 67 } 68 69 public Stream<Binding> argumentBindings() { 70 return argumentBindings.stream().flatMap(List::stream); 71 } 72 73 public List<Binding> returnBindings() { 74 return returnBindings; 75 } 76 77 public String asString() { 78 StringBuilder sb = new StringBuilder(); 79 80 sb.append("CallingSequence: {\n"); 81 sb.append(" MethodType: ").append(mt); 82 sb.append(" FunctionDescriptor: ").append(desc); 83 sb.append(" Argument Bindings:\n"); 84 for (int i = 0; i < mt.parameterCount(); i++) { 85 sb.append(" ").append(i).append(": ").append(argumentBindings.get(i)).append("\n"); 86 } 87 if (mt.returnType() != void.class) { 88 sb.append(" ").append("Return: ").append(returnBindings).append("\n"); 89 } 90 sb.append("}\n"); 91 92 return sb.toString(); 93 } 94 95 public MethodType methodType() { 96 return mt; 97 } 98 99 public FunctionDescriptor functionDesc() { 100 return desc; 101 } 102 }