TestPos.java revision 553:9d9f26857129 
1/*
2 * Copyright (c) 2006, 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     6413682
27 * @summary Compiler confused about implicit type args and arrays
28 * @author  Peter von der Ah\u00e9
29 */
30
31import com.sun.source.tree.CompilationUnitTree;
32import com.sun.source.tree.ErroneousTree;
33import com.sun.source.tree.Tree;
34import com.sun.source.util.JavacTask;
35import com.sun.source.util.TreeScanner;
36import com.sun.source.util.Trees;
37import java.io.IOException;
38import java.net.URI;
39import java.util.Collections;
40import java.util.List;
41import javax.tools.Diagnostic;
42import javax.tools.DiagnosticListener;
43import javax.tools.JavaCompiler;
44import javax.tools.JavaFileObject;
45import javax.tools.SimpleJavaFileObject;
46import static javax.tools.JavaFileObject.Kind.SOURCE;
47import javax.tools.ToolProvider;
48
49public class TestPos {
50
51    static final String errCode = "compiler.err.cannot.create.array.with.type.arguments";
52    static final String expected =
53        String.format("%s%n%s%n",
54                      "compiler.err.cannot.create.array.with.type.arguments @ 33",
55                      "begin=28, end=50 : new Object[0],T,e,s,t");
56
57    public static void main(String... args) throws IOException {
58        final boolean[] sawError = { false };
59        final StringBuilder log = new StringBuilder();
60        class MyFileObject extends SimpleJavaFileObject {
61            MyFileObject() {
62                super(URI.create("myfo:///Test.java"), SOURCE);
63            }
64            @Override
65            public String getCharContent(boolean ignoreEncodingErrors) {
66                //      0         1         2         3         4         5
67                //      0123456789012345678901234567890123456789012345678901234
68                return "class Test { { Object[] o = new <T,e,s,t>Object[0]; } }";
69            }
70        }
71        class Scanner extends TreeScanner<Void,Trees> {
72            CompilationUnitTree toplevel = null;
73            @Override
74            public Void visitCompilationUnit(CompilationUnitTree node, Trees trees) {
75                toplevel = node;
76                return super.visitCompilationUnit(node, trees);
77            }
78            @Override
79            public Void visitErroneous(ErroneousTree node, Trees trees) {
80                sawError[0] = true;
81                long startPos = trees.getSourcePositions().getStartPosition(toplevel, node);
82                long endPos = trees.getSourcePositions().getEndPosition(toplevel, node);
83                log.append(String.format("begin=%s, end=%s : %s%n",
84                                         startPos,
85                                         endPos,
86                                         node.getErrorTrees()));
87                if (startPos != 28)
88                    error("Start pos for %s is incorrect (%s)!", node, startPos);
89                if (endPos != 50)
90                    error("End pos for %s is incorrect (%s)!", node, endPos);
91                return null;
92            }
93        }
94        JavaCompiler javac = ToolProvider.getSystemJavaCompiler();
95        List<JavaFileObject> compilationUnits =
96                Collections.<JavaFileObject>singletonList(new MyFileObject());
97        DiagnosticListener<JavaFileObject> dl = new DiagnosticListener<JavaFileObject>() {
98            public void report(Diagnostic<? extends JavaFileObject> diag) {
99                log.append(String.format("%s @ %s%n", diag.getCode(), diag.getPosition()));
100                if (!diag.getCode().equals(errCode))
101                    error("unexpected error");
102                if (diag.getPosition() != 33)
103                    error("Error pos for %s is incorrect (%s)!",
104                          diag.getCode(), diag.getPosition());
105                sawError[0] = true;
106            }
107        };
108        JavacTask task = (JavacTask)javac.getTask(null, null, dl, null, null,
109                                                  compilationUnits);
110        Trees trees = Trees.instance(task);
111        Iterable<? extends Tree> toplevels = task.parse();
112        if (!sawError[0])
113            error("No parse error detected");
114        sawError[0] = false;
115        new Scanner().scan(toplevels, trees);
116        if (!sawError[0])
117            error("No error tree detected");
118        if (!log.toString().equals(expected))
119            error("Unexpected log message: %n%s%n", log);
120        System.out.print(log);
121        System.out.flush();
122    }
123
124    static void error(String format, Object... args) {
125        throw new AssertionError(String.format(format, args));
126    }
127
128}
129