1 /* 2 * Copyright (c) 2014, 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 package com.sun.tools.sjavac.comp.dependencies; 26 27 import java.util.Collections; 28 import java.util.HashSet; 29 import java.util.Objects; 30 import java.util.Set; 31 import java.util.stream.Collectors; 32 33 import com.sun.tools.javac.code.Symbol.ClassSymbol; 34 import com.sun.tools.javac.code.Symbol.PackageSymbol; 35 import com.sun.tools.javac.code.Symbol.TypeSymbol; 36 import com.sun.tools.javac.code.Kinds; 37 import com.sun.tools.javac.code.Type; 38 39 import static com.sun.tools.javac.code.Kinds.Kind.*; 40 41 public class TypeAndSupertypesDependency implements Dependency { 42 43 protected TypeSymbol type; 44 45 public TypeAndSupertypesDependency(TypeSymbol type) { 46 this.type = Objects.requireNonNull(type); 47 } 48 49 private Set<TypeSymbol> allSupertypes(TypeSymbol t) { 50 if (t == null) 51 return Collections.emptySet(); 52 Set<TypeSymbol> result = new HashSet<>(); 53 result.add(t); 54 if (t instanceof ClassSymbol) { 55 ClassSymbol cs = (ClassSymbol) t; 56 result.addAll(allSupertypes(cs.getSuperclass().tsym)); 57 for (Type it : cs.getInterfaces()) 58 result.addAll(allSupertypes(it.tsym)); 59 } 60 return result; 61 } 62 63 @Override 64 public Set<PackageSymbol> getPackages() { 65 if (type.kind == ERR) 66 return Collections.emptySet(); 67 if (type instanceof ClassSymbol) { 68 return allSupertypes(type).stream() 69 .map(TypeSymbol::packge) 70 .collect(Collectors.toSet()); 71 } 72 throw new AssertionError("Could not get package name for " + type); 73 } 74 } 75