TypeProcOnly.java revision 1520:71f35e4b93a5 
1/*
2 * Copyright (c) 2009 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 */
23import java.io.*;
24import java.util.Set;
25import java.util.HashSet;
26
27import javax.annotation.processing.*;
28import javax.lang.model.SourceVersion;
29import javax.lang.model.element.*;
30import javax.lang.model.util.ElementFilter;
31
32import com.sun.source.util.JavacTask;
33import com.sun.source.util.TaskEvent;
34import com.sun.source.util.TaskListener;
35import com.sun.source.util.TreePath;
36import com.sun.tools.javac.main.JavaCompiler;
37import com.sun.tools.javac.main.JavaCompiler.CompileState;
38import com.sun.tools.javac.processing.JavacProcessingEnvironment;
39import com.sun.tools.javac.util.Context;
40
41/*
42 * @test
43 * @summary test that type processors are run when -proc:only is passed.
44 * This class implements the functionality of a type processor, as previously
45 * embodied by the AbstractTypeProcessor class.
46 *
47 * @author Mahmood Ali
48 * @author Werner Dietl
49 */
50@SupportedAnnotationTypes("*")
51public class TypeProcOnly extends AbstractProcessor {
52    private static final String INDICATOR = "INDICATOR";
53
54    private final AttributionTaskListener listener = new AttributionTaskListener();
55    private final Set<Name> elements = new HashSet<Name>();
56
57    @Override
58    public final void init(ProcessingEnvironment env) {
59        super.init(env);
60        JavacTask.instance(env).addTaskListener(listener);
61        Context ctx = ((JavacProcessingEnvironment)processingEnv).getContext();
62        JavaCompiler compiler = JavaCompiler.instance(ctx);
63        compiler.shouldStopPolicyIfNoError = CompileState.max(
64                compiler.shouldStopPolicyIfNoError,
65                CompileState.FLOW);
66    }
67
68    @Override
69    public final boolean process(Set<? extends TypeElement> annotations,
70            RoundEnvironment roundEnv) {
71        for (TypeElement elem : ElementFilter.typesIn(roundEnv.getRootElements())) {
72            elements.add(elem.getQualifiedName());
73        }
74        return false;
75    }
76
77    @Override
78    public SourceVersion getSupportedSourceVersion() {
79        return SourceVersion.latest();
80    }
81
82    private final class AttributionTaskListener implements TaskListener {
83        @Override
84        public void started(TaskEvent e) { }
85
86        @Override
87        public void finished(TaskEvent e) {
88            if (e.getKind() != TaskEvent.Kind.ANALYZE)
89                return;
90
91            if (!elements.remove(e.getTypeElement().getQualifiedName()))
92                return;
93
94            System.out.println(INDICATOR);
95        }
96    }
97
98
99    private static File writeTestFile() throws IOException {
100        File f = new File("Test.java");
101        PrintWriter out = new PrintWriter(new BufferedWriter(new FileWriter(f)));
102        out.println("class Test { }");
103        out.close();
104        return f;
105    }
106
107    public static void main(String[] args) throws Exception {
108        PrintStream prevOut = System.out;
109
110        ByteArrayOutputStream bytes = new ByteArrayOutputStream();
111        PrintStream out = new PrintStream(bytes);
112        System.setOut(out);
113
114        try {
115            File f = writeTestFile();
116            com.sun.tools.javac.Main.compile(new String[] {"-proc:only", "-processor", "TypeProcOnly", f.getAbsolutePath()});
117        } finally {
118            System.setOut(prevOut);
119        }
120
121        if (bytes.toString().trim().equals(INDICATOR)) {
122            System.out.println("PASSED");
123        } else {
124            throw new Exception("Processor did not run correctly. Output: " + bytes);
125        }
126    }
127}
128