1 /* 2 * Copyright (c) 2010, 2011 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 24 /* 25 * @test 26 * @bug 6993963 27 * @summary Project Coin: Use precise exception analysis for effectively final catch parameters 28 * @library ../../lib 29 * @build JavacTestingAbstractProcessor ModelChecker 30 * @compile -processor ModelChecker Model01.java 31 */ 32 33 import com.sun.source.tree.CatchTree; 34 import com.sun.source.util.TreePathScanner; 35 import com.sun.source.util.Trees; 36 import com.sun.source.util.TreePath; 37 38 import java.util.Set; 39 import javax.annotation.processing.RoundEnvironment; 40 import javax.annotation.processing.SupportedAnnotationTypes; 41 import javax.lang.model.element.Element; 42 import javax.lang.model.element.ElementKind; 43 import javax.lang.model.element.TypeElement; 44 import javax.lang.model.type.TypeMirror; 45 import javax.lang.model.type.TypeKind; 46 import javax.lang.model.type.UnionType; 47 import javax.lang.model.type.UnknownTypeException; 48 import javax.lang.model.util.SimpleTypeVisitor6; 49 import javax.lang.model.util.SimpleTypeVisitor7; 50 51 @SupportedAnnotationTypes("Check") 52 public class ModelChecker extends JavacTestingAbstractProcessor { 53 54 @Override 55 public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) { 56 if (roundEnv.processingOver()) 57 return true; 58 59 Trees trees = Trees.instance(processingEnv); 60 61 TypeElement testAnno = elements.getTypeElement("Check"); 62 for (Element elem: roundEnv.getElementsAnnotatedWith(testAnno)) { 63 TreePath p = trees.getPath(elem); 64 new MulticatchParamTester(trees).scan(p, null); 65 } 66 return true; 67 } 68 69 class MulticatchParamTester extends TreePathScanner<Void, Void> { 70 Trees trees; 71 72 public MulticatchParamTester(Trees trees) { 73 super(); 74 this.trees = trees; 75 } 76 77 @Override 78 public Void visitCatch(CatchTree node, Void p) { 79 TreePath param = new TreePath(getCurrentPath(), node.getParameter()); 80 Element ex = trees.getElement(param); 81 validateUnionTypeInfo(ex); 82 if (ex.getSimpleName().contentEquals("ex")) { 83 assertTrue(ex.getKind() == ElementKind.EXCEPTION_PARAMETER, "Expected EXCEPTION_PARAMETER - found " + ex.getKind()); 84 for (Element e : types.asElement(trees.getLub(node)).getEnclosedElements()) { 85 Member m = e.getAnnotation(Member.class); 86 if (m != null) { 87 assertTrue(e.getKind() == m.value(), "Expected " + m.value() + " - found " + e.getKind()); 88 } 89 } 90 assertTrue(assertionCount == 9, "Expected 9 assertions - found " + assertionCount); 91 } 92 return super.visitCatch(node, p); 93 } 94 } 95 96 private void validateUnionTypeInfo(Element ex) { 97 UnionTypeInfo ut = ex.getAnnotation(UnionTypeInfo.class); 98 assertTrue(ut != null, "UnionType annotation must be present"); 99 100 TypeMirror expectedUnionType = ex.asType(); 101 assertTrue(expectedUnionType.getKind() == TypeKind.UNION, "UNION kind expected"); 102 103 try { 104 new SimpleTypeVisitor6<Void, Void>(){}.visit(expectedUnionType); 105 throw new RuntimeException("Expected UnknownTypeException not thrown."); 106 } catch (UnknownTypeException ute) { 107 ; // Expected 108 } 109 110 UnionType unionType = new SimpleTypeVisitor7<UnionType, Void>(){ 111 @Override 112 protected UnionType defaultAction(TypeMirror e, Void p) {return null;} 113 114 @Override 115 public UnionType visitUnion(UnionType t, Void p) {return t;} 116 }.visit(expectedUnionType); 117 assertTrue(unionType != null, "Must get a non-null union type."); 118 119 assertTrue(ut.value().length == unionType.getAlternatives().size(), "Cardinalities do not match"); 120 121 String[] typeNames = ut.value(); 122 for(int i = 0; i < typeNames.length; i++) { 123 TypeMirror typeFromAnnotation = nameToType(typeNames[i]); 124 assertTrue(types.isSameType(typeFromAnnotation, unionType.getAlternatives().get(i)), 125 "Types were not equal."); 126 } 127 } 128 129 private TypeMirror nameToType(String name) { 130 return elements.getTypeElement(name).asType(); 131 } 132 133 private static void assertTrue(boolean cond, String msg) { 134 assertionCount++; 135 if (!cond) 136 throw new AssertionError(msg); 137 } 138 139 static int assertionCount = 0; 140 }