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 7025809
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 import static JavacTestingAbstractProcessor.*;
51
52 @SupportedAnnotationTypes("Check")
53 public class ModelChecker extends JavacTestingAbstractProcessor {
54
55 @Override
56 public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
57 if (roundEnv.processingOver())
58 return true;
59
60 Trees trees = Trees.instance(processingEnv);
61
62 TypeElement testAnno = elements.getTypeElement("Check");
63 for (Element elem: roundEnv.getElementsAnnotatedWith(testAnno)) {
64 TreePath p = trees.getPath(elem);
65 new MulticatchParamTester(trees).scan(p, null);
66 }
67 return true;
68 }
69
70 class MulticatchParamTester extends TreePathScanner<Void, Void> {
71 Trees trees;
72
73 public MulticatchParamTester(Trees trees) {
74 super();
75 this.trees = trees;
76 }
77
78 @Override
79 public Void visitCatch(CatchTree node, Void p) {
80 TreePath param = new TreePath(getCurrentPath(), node.getParameter());
81 Element ex = trees.getElement(param);
82 validateUnionTypeInfo(ex);
83 if (ex.getSimpleName().contentEquals("ex")) {
84 assertTrue(ex.getKind() == ElementKind.EXCEPTION_PARAMETER, "Expected EXCEPTION_PARAMETER - found " + ex.getKind());
85 for (Element e : types.asElement(trees.getLub(node)).getEnclosedElements()) {
86 Member m = e.getAnnotation(Member.class);
87 if (m != null) {
88 assertTrue(e.getKind() == m.value(), "Expected " + m.value() + " - found " + e.getKind());
89 }
90 }
91 assertTrue(assertionCount == 9, "Expected 9 assertions - found " + assertionCount);
92 }
93 return super.visitCatch(node, p);
94 }
95 }
96
97 private void validateUnionTypeInfo(Element ex) {
98 UnionTypeInfo ut = ex.getAnnotation(UnionTypeInfo.class);
99 assertTrue(ut != null, "UnionType annotation must be present");
100
101 TypeMirror expectedUnionType = ex.asType();
102 assertTrue(expectedUnionType.getKind() == TypeKind.UNION, "UNION kind expected");
103
104 try {
105 new SimpleTypeVisitor6<Void, Void>(){}.visit(expectedUnionType);
106 throw new RuntimeException("Expected UnknownTypeException not thrown.");
107 } catch (UnknownTypeException ute) {
108 ; // Expected
109 }
110
111 UnionType unionType = new SimpleTypeVisitor<UnionType, Void>(){
112 @Override
113 protected UnionType defaultAction(TypeMirror e, Void p) {return null;}
114
115 @Override
116 public UnionType visitUnion(UnionType t, Void p) {return t;}
117 }.visit(expectedUnionType);
118 assertTrue(unionType != null, "Must get a non-null union type.");
119
120 assertTrue(ut.value().length == unionType.getAlternatives().size(), "Cardinalities do not match");
121
122 String[] typeNames = ut.value();
123 for(int i = 0; i < typeNames.length; i++) {
124 TypeMirror typeFromAnnotation = nameToType(typeNames[i]);
125 assertTrue(types.isSameType(typeFromAnnotation, unionType.getAlternatives().get(i)),
126 "Types were not equal.");
127 }
128 }
129
130 private TypeMirror nameToType(String name) {
131 return elements.getTypeElement(name).asType();
132 }
133
134 private static void assertTrue(boolean cond, String msg) {
135 assertionCount++;
136 if (!cond)
137 throw new AssertionError(msg);
138 }
139
140 static int assertionCount = 0;
141 }