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 * @summary Checks that the interaction between annotated and unannotated
27  *         array levels in array creation trees
28 * @modules jdk.compiler/com.sun.tools.javac.api
29 *          jdk.compiler/com.sun.tools.javac.file
30 *          jdk.compiler/com.sun.tools.javac.tree
31 *          jdk.compiler/com.sun.tools.javac.util
32 */
33
34import com.sun.tools.javac.api.JavacTool;
35import com.sun.tools.javac.tree.JCTree.JCNewArray;
36import java.lang.annotation.*;
37import java.io.File;
38import java.io.PrintWriter;
39import java.util.Arrays;
40import java.util.List;
41import java.util.Map;
42import java.util.HashMap;
43import javax.tools.JavaFileManager;
44import javax.tools.JavaFileObject;
45import com.sun.source.tree.*;
46import com.sun.source.util.JavacTask;
47import com.sun.source.util.TreeScanner;
48import javax.tools.StandardJavaFileManager;
49
50
51public class ArrayCreationTree {
52    public static void main(String[] args) throws Exception {
53        PrintWriter out = new PrintWriter(System.out, true);
54        JavacTool tool = JavacTool.create();
55        try (StandardJavaFileManager fm = tool.getStandardFileManager(null, null, null)) {
56            File testSrc = new File(System.getProperty("test.src"));
57            Iterable<? extends JavaFileObject> f =
58                fm.getJavaFileObjectsFromFiles(Arrays.asList(new File(testSrc, "ArrayCreationTree.java")));
59            JavacTask task = tool.getTask(out, fm, null, null, null, f);
60            Iterable<? extends CompilationUnitTree> trees = task.parse();
61            out.flush();
62
63            Scanner s = new Scanner();
64            for (CompilationUnitTree t: trees)
65                s.scan(t, null);
66        }
67    }
68
69    private static class Scanner extends TreeScanner<Void,Void> {
70        int foundAnnotations = 0;
71        public Void visitCompilationUnit(CompilationUnitTree node, Void ignore) {
72            super.visitCompilationUnit(node, ignore);
73            if (foundAnnotations != expectedAnnotations) {
74                throw new AssertionError("Expected " + expectedAnnotations +
75                        " annotations but found: " + foundAnnotations);
76            }
77            return null;
78        }
79
80        private void testAnnotations(List<? extends AnnotationTree> annos, int found) {
81            if (annos.isEmpty()) return;
82
83            String annotation = annos.get(0).toString();
84            foundAnnotations++;
85
86            int expected = -1;
87            if (annotation.equals("@A()"))
88                expected = 0;
89            else if (annotation.equals("@B()"))
90                expected = 1;
91            else if (annotation.equals("@C()"))
92                expected = 2;
93            else
94                throw new AssertionError("found an unexpected annotation: " + annotation);
95            if (found != expected) {
96                throw new AssertionError("Unexpected found length" +
97                    ", found " + found + " but expected " + expected);
98            }
99        }
100
101        public Void visitAnnotatedType(AnnotatedTypeTree node, Void ignore) {
102            testAnnotations(node.getAnnotations(), arrayLength(node));
103            return super.visitAnnotatedType(node, ignore);
104        }
105
106        public Void visitNewArray(NewArrayTree node, Void ignore) {
107            // the Tree API hasn't been updated to expose annotations yet
108            JCNewArray newArray = (JCNewArray)node;
109            int totalLength = node.getDimensions().size()
110                                + arrayLength(node.getType())
111                                + ((newArray.getInitializers() != null) ? 1 : 0);
112            testAnnotations(newArray.annotations, totalLength);
113            int count = 0;
114            for (List<? extends AnnotationTree> annos : newArray.dimAnnotations) {
115                testAnnotations(annos, totalLength - count);
116                count++;
117            }
118            return super.visitNewArray(node, ignore);
119        }
120
121        private int arrayLength(Tree tree) {
122            // TODO: the tree is null when called with node.getType(). Why?
123            if (tree==null) return -1;
124            switch (tree.getKind()) {
125            case ARRAY_TYPE:
126                return 1 + arrayLength(((ArrayTypeTree)tree).getType());
127            case ANNOTATED_TYPE:
128                return arrayLength(((AnnotatedTypeTree)tree).getUnderlyingType());
129            default:
130                return 0;
131            }
132        }
133    }
134
135    static int expectedAnnotations = 21;
136
137    Object a1 = new @A Object @C [2] @B [1];
138    Object b1 = new @A Object @C [2] @B [ ];
139    Object c1 = new @A Object @C [ ] @B [ ] { };
140
141    Object a2 = new @A Object @C [2]    [1];
142    Object b2 = new @A Object @C [2]    [ ];
143    Object c2 = new @A Object @C [ ]    [ ] { };
144
145    Object a3 = new @A Object    [2] @B [1];
146    Object b3 = new @A Object    [2] @B [ ];
147    Object c3 = new @A Object    [ ] @B [ ] { };
148
149    @Target({ElementType.TYPE_USE, ElementType.TYPE_PARAMETER})
150    @interface A {}
151    @Target({ElementType.TYPE_USE, ElementType.TYPE_PARAMETER})
152    @interface B {}
153    @Target({ElementType.TYPE_USE, ElementType.TYPE_PARAMETER})
154    @interface C {}
155
156}
157