1 /* 2 * Copyright (c) 2024, 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 jdk.incubator.code.dialect.java; 27 28 import jdk.incubator.code.TypeElement; 29 import jdk.incubator.code.dialect.java.impl.ConstructorRefImpl; 30 import jdk.incubator.code.dialect.core.FunctionType; 31 32 import java.lang.invoke.MethodHandle; 33 import java.lang.invoke.MethodHandles; 34 import java.lang.invoke.MethodType; 35 import java.lang.reflect.Constructor; 36 import java.util.List; 37 38 import static jdk.incubator.code.dialect.core.CoreType.functionType; 39 40 /** 41 * The symbolic reference to a Java constructor. 42 */ 43 public sealed interface ConstructorRef extends JavaRef, TypeVariableType.Owner 44 permits ConstructorRefImpl { 45 46 FunctionType type(); 47 48 default TypeElement refType() { 49 return type().returnType(); 50 } 51 52 // Resolutions to constructors and method handles 53 54 // Resolve to constructor on referenced class 55 Constructor<?> resolveToConstructor(MethodHandles.Lookup l) throws ReflectiveOperationException; 56 57 // Resolve to constructor on referenced class 58 MethodHandle resolveToHandle(MethodHandles.Lookup l) throws ReflectiveOperationException; 59 60 // Factories 61 62 static ConstructorRef constructor(Constructor<?> c) { 63 return constructor(c.getDeclaringClass(), 64 c.getParameterTypes()); 65 } 66 67 static ConstructorRef constructor(MethodType mt) { 68 return constructor(mt.returnType(), mt.parameterList()); 69 } 70 71 static ConstructorRef constructor(Class<?> refType, Class<?>... params) { 72 return constructor(refType, List.of(params)); 73 } 74 75 static ConstructorRef constructor(Class<?> refType, List<Class<?>> params) { 76 return constructor(JavaType.type(refType), params.stream().map(JavaType::type).toList()); 77 } 78 79 static ConstructorRef constructor(TypeElement refType, List<? extends TypeElement> params) { 80 return constructor(functionType(refType, params)); 81 } 82 83 static ConstructorRef constructor(TypeElement refType, TypeElement... params) { 84 return constructor(functionType(refType, params)); 85 } 86 87 static ConstructorRef constructor(FunctionType type) { 88 return new ConstructorRefImpl(type); 89 } 90 }