1/*
2 * Copyright (c) 2010, 2015, 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 6988836
27 * @summary A new JavacElements is created for each round of annotation processing
28 * @library /tools/javac/lib
29 * @modules jdk.compiler/com.sun.tools.javac.api
30 *          jdk.compiler/com.sun.tools.javac.model
31 *          jdk.compiler/com.sun.tools.javac.processing
32 *          jdk.compiler/com.sun.tools.javac.util
33 * @build JavacTestingAbstractProcessor TestContext
34 * @compile/process -processor TestContext -XprintRounds TestContext
35 */
36
37import java.io.*;
38import java.util.*;
39import javax.annotation.processing.*;
40import javax.lang.model.element.*;
41import static javax.tools.Diagnostic.Kind.*;
42
43import com.sun.source.util.Trees;
44import com.sun.tools.javac.api.JavacTrees;
45import com.sun.tools.javac.model.JavacElements;
46import com.sun.tools.javac.model.JavacTypes;
47import com.sun.tools.javac.processing.JavacProcessingEnvironment;
48import com.sun.tools.javac.util.Context;
49
50public class TestContext extends JavacTestingAbstractProcessor {
51
52    Trees treeUtils;
53    int round = 0;
54
55    @Override
56    public void init(ProcessingEnvironment pEnv) {
57        super.init(pEnv);
58        treeUtils = Trees.instance(processingEnv);
59    }
60
61    @Override
62    public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
63        round++;
64
65        JavacProcessingEnvironment jpe = (JavacProcessingEnvironment) processingEnv;
66        Context c = jpe.getContext();
67        check(c.get(JavacElements.class), eltUtils);
68        check(c.get(JavacTypes.class), typeUtils);
69        check(c.get(JavacTrees.class), treeUtils);
70
71        final int MAXROUNDS = 3;
72        if (round < MAXROUNDS)
73            generateSource("Gen" + round);
74
75        return true;
76    }
77
78    <T> void check(T actual, T expected) {
79//        messager.printMessage(NOTE, "expect: " + expected);
80//        messager.printMessage(NOTE, "actual: " + actual);
81
82        if (actual != expected) {
83            messager.printMessage(ERROR,
84                "round " + round + " unexpected value for " + expected.getClass().getName() + ": " + actual);
85        }
86    }
87
88    void generateSource(String name) {
89        String text = "class " + name + " { }\n";
90
91        try (Writer out = filer.createSourceFile(name).openWriter()) {
92                out.write(text);
93        } catch (IOException e) {
94            throw new Error(e);
95        }
96    }
97
98}
99
100