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comparison: test/tools/javac/api/TestContainTypes.java

test/tools/javac/api/TestContainTypes.java

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1 /*
2 * Copyright (c) 2010, 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 6981185
27 * @summary com.sun.tools.model.JavacTypes.contains() calls Type.contains instead of Types.containsType
28 * @run main TestContainTypes
29 */
30
31 import java.net.URI;
32 import java.util.Arrays;
33 import java.util.HashSet;
34 import java.util.Set;
35 import javax.annotation.processing.AbstractProcessor;
36 import javax.annotation.processing.RoundEnvironment;
37 import javax.lang.model.element.Element;
38 import javax.lang.model.element.TypeElement;
39 import javax.lang.model.element.ExecutableElement;
40 import javax.lang.model.type.TypeMirror;
41 import javax.lang.model.type.DeclaredType;
42 import javax.tools.JavaCompiler;
43 import javax.tools.JavaFileObject;
44 import javax.tools.SimpleJavaFileObject;
45 import javax.tools.ToolProvider;
46
47 import com.sun.source.util.JavacTask;
48 import javax.annotation.processing.SupportedSourceVersion;
49 import javax.lang.model.SourceVersion;
50
51 public class TestContainTypes {
52
53 enum ClassType {
54 OBJECT("Object"),
55 NUMBER("Number"),
56 INTEGER("Integer"),
57 STRING("String");
58
59 String classStub;
60
61 ClassType(String classStub) {
62 this.classStub = classStub;
63 }
64
65 boolean subtypeOf(ClassType that) {
66 switch (that) {
67 case OBJECT: return true;
68 case NUMBER: return this == NUMBER || this == INTEGER;
69 case INTEGER: return this == INTEGER;
70 case STRING: return this == STRING;
71 default: throw new AssertionError("Bad type kind in subtyping test");
72 }
73 }
74 }
75
76 enum ParameterType {
77 INVARIANT("List<#1>"),
78 COVARIANT("List<? extends #1>"),
79 CONTRAVARIANT("List<? super #1>"),
80 BIVARIANT("List<?>");
81
82 String paramTypeStub;
83
84 ParameterType(String paramTypeStub) {
85 this.paramTypeStub = paramTypeStub;
86 }
87
88 String instantiate(ClassType ct) {
89 return paramTypeStub.replace("#1", ct.classStub);
90 }
91
92 static boolean contains(ParameterType pt1, ClassType ct1,
93 ParameterType pt2, ClassType ct2) {
94 switch (pt1) {
95 case INVARIANT: return (pt2 == INVARIANT && ct1 == ct2) ||
96 (pt2 == CONTRAVARIANT && ct1 == ct2 && ct1 == ClassType.OBJECT);
97 case COVARIANT: return ((pt2 == INVARIANT || pt2 == COVARIANT) &&
98 ct2.subtypeOf(ct1)) ||
99 (ct1 == ClassType.OBJECT);
100 case CONTRAVARIANT: return (pt2 == INVARIANT || pt2 == CONTRAVARIANT) &&
101 ct1.subtypeOf(ct2);
102 case BIVARIANT: return true;
103 default: throw new AssertionError("Bad type kind in containment test");
104 }
105 }
106 }
107
108 static class JavaSource extends SimpleJavaFileObject {
109
110 final static String sourceStub =
111 "import java.util.List;\n" +
112 "@interface ToCheck {}\n" +
113 "class Test {\n" +
114 " @ToCheck void test(#A a, #B b) {}\n" +
115 "}\n";
116
117 String source;
118
119 public JavaSource(String typeA, String typeB) {
120 super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE);
121 source = sourceStub.replace("#A", typeA).replace("#B", typeB);
122 }
123
124 @Override
125 public CharSequence getCharContent(boolean ignoreEncodingErrors) {
126 return source;
127 }
128 }
129
130 public static void main(String... args) throws Exception {
131 for (ClassType ctA : ClassType.values()) {
132 for (ParameterType ptA : ParameterType.values()) {
133 for (ClassType ctB : ClassType.values()) {
134 for (ParameterType ptB : ParameterType.values()) {
135 compileAndCheck(ptA, ctA, ptB, ctB);
136 }
137 }
138 }
139 }
140 }
141
142 static void compileAndCheck(ParameterType ptA, ClassType ctA, ParameterType ptB, ClassType ctB) throws Exception {
143 JavaSource source = new JavaSource(ptA.instantiate(ctA), ptB.instantiate(ctB));
144 final JavaCompiler tool = ToolProvider.getSystemJavaCompiler();
145 JavacTask ct = (JavacTask)tool.getTask(null, null, null,
146 null, null, Arrays.asList(source));
147 ct.setProcessors(Arrays.asList(new ContainTypesTester(ParameterType.contains(ptA, ctA, ptB, ctB), source)));
148 System.err.println("A = " + ptA +" / " + ptA.instantiate(ctA));
149 System.err.println("B = " + ptB +" / " + ptB.instantiate(ctB));
150 System.err.println("Source = " + source.source);
151 ct.analyze();
152 }
153
154 @SupportedSourceVersion(SourceVersion.RELEASE_7)
155 static class ContainTypesTester extends AbstractProcessor {
156
157 boolean expected;
158 JavaSource source;
159
160 ContainTypesTester(boolean expected, JavaSource source) {
161 this.expected = expected;
162 this.source = source;
163 }
164
165 @Override
166 public Set<String> getSupportedAnnotationTypes() {
167 Set<String> supportedAnnos = new HashSet();
168 supportedAnnos.add("*");
169 return supportedAnnos;
170 }
171
172 private void error(String msg) {
173 System.err.println(source.source);
174 throw new AssertionError(msg);
175 }
176
177 @Override
178 public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
179 if (roundEnv.getRootElements().size() == 0) {
180 return true;
181 }
182 if (annotations.isEmpty() || annotations.size() > 1) {
183 error("no anno found/wrong number of annotations found: " + annotations.size());
184 }
185 TypeElement anno = (TypeElement)annotations.toArray()[0];
186 Set<? extends Element> annoElems = roundEnv.getElementsAnnotatedWith(anno);
187 if (annoElems.isEmpty() || annoElems.size() > 1) {
188 error("no annotated element found/wrong number of annotated elements found: " + annoElems.size());
189 }
190 Element annoElement = (Element)annoElems.toArray()[0];
191 if (!(annoElement instanceof ExecutableElement)) {
192 error("annotated element must be a method");
193 }
194 ExecutableElement method = (ExecutableElement)annoElement;
195 if (method.getParameters().size() != 2) {
196 error("annotated method must have 2 arguments");
197 }
198 DeclaredType d1 = (DeclaredType)method.getParameters().get(0).asType();
199 DeclaredType d2 = (DeclaredType)method.getParameters().get(1).asType();
200 if (d1.getTypeArguments().size() != 1 ||
201 d1.getTypeArguments().size() != 1) {
202 error("parameter type must be generic in one type-variable");
203 }
204 TypeMirror t1 = d1.getTypeArguments().get(0);
205 TypeMirror t2 = d2.getTypeArguments().get(0);
206
207 if (processingEnv.getTypeUtils().contains(t1, t2) != expected) {
208 error("bad type containment result\n" +
209 "t1 : " + t1 +"\n" +
210 "t2 : " + t2 +"\n" +
211 "expected answer : " + expected +"\n");
212 }
213 return true;
214 }
215 }
216 }

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