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.HashSet; 28 import java.util.Set; 29 30 import com.sun.source.tree.Tree; 31 import com.sun.source.util.TaskEvent; 32 import com.sun.source.util.TaskListener; 33 import com.sun.tools.javac.code.Symbol.ClassSymbol; 34 import com.sun.tools.javac.tree.JCTree.JCClassDecl; 35 import com.sun.tools.javac.tree.JCTree.JCCompilationUnit; 36 import com.sun.tools.javac.util.Context; 37 import com.sun.tools.javac.util.DefinedBy; 38 import com.sun.tools.javac.util.DefinedBy.Api; 39 import com.sun.tools.sjavac.comp.Dependencies; 40 41 public class PublicApiCollector implements TaskListener { 42 43 private Context context; 44 private final Set<ClassSymbol> classSymbols = new HashSet<>(); 45 46 public PublicApiCollector(Context context) { 47 this.context = context; 48 } 49 50 @Override 51 @DefinedBy(Api.COMPILER_TREE) 52 public void finished(TaskEvent e) { 53 switch (e.getKind()) { 54 case ANALYZE: 55 collectClassSymbols((JCCompilationUnit) e.getCompilationUnit()); 56 break; 57 case COMPILATION: 58 extractPubApis(); 59 break; 60 } 61 } 62 63 private void collectClassSymbols(JCCompilationUnit cu) { 64 for (Tree t : cu.getTypeDecls()) { 65 if (t instanceof JCClassDecl) // Can also be a JCSkip 66 classSymbols.add(((JCClassDecl) t).sym); 67 } 68 } 69 70 private void extractPubApis() { 71 // For incremental builds we need to remember the public api of what 72 // we depend upon. 73 // Within a single compilation loop, we need to keep track of public 74 // api of what we're compiling to decide if any dependants needs to 75 // be tainted. 76 Dependencies deps = Dependencies.instance(context); 77 for (ClassSymbol cs : classSymbols) 78 deps.visitPubapi(cs); 79 } 80 }