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.HashMap; 28 import java.util.Map; 29 import java.util.Set; 30 import java.util.stream.Collectors; 31 32 import com.sun.source.util.TaskEvent; 33 import com.sun.source.util.TaskListener; 34 import com.sun.tools.javac.code.Symbol.PackageSymbol; 35 import com.sun.tools.javac.tree.JCTree.JCCompilationUnit; 36 import com.sun.tools.javac.util.DefinedBy; 37 import com.sun.tools.javac.util.DefinedBy.Api; 38 import com.sun.tools.sjavac.Util; 39 40 public class DependencyCollector implements TaskListener { 41 42 Map<PackageSymbol, Set<PackageSymbol>> collectedDependencies = new HashMap<>(); 43 44 @Override 45 @DefinedBy(Api.COMPILER_TREE) 46 public void started(TaskEvent e) { 47 } 48 49 @Override 50 @DefinedBy(Api.COMPILER_TREE) 51 public void finished(TaskEvent e) { 52 if (e.getKind() == TaskEvent.Kind.ANALYZE) { 53 JCCompilationUnit cu = (JCCompilationUnit) e.getCompilationUnit(); 54 PackageSymbol thisPkg = cu.packge; 55 if (thisPkg == null) { 56 // Compilation unit in default package. See JDK-8048144. 57 return; 58 } 59 DependencyScanner ds = new DependencyScanner(); 60 cu.accept(ds); 61 Set<PackageSymbol> pkgDeps = ds.getResult() 62 .stream() 63 .flatMap(dep -> dep.getPackages().stream()) 64 .collect(Collectors.toSet()); 65 collectedDependencies.merge(thisPkg, pkgDeps, Util::union); 66 } 67 } 68 69 public Set<PackageSymbol> getSourcePackages() { 70 return collectedDependencies.keySet(); 71 } 72 73 public Set<PackageSymbol> getDependenciesForPkg(PackageSymbol ps) { 74 return collectedDependencies.get(ps); 75 } 76 }