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