AnnotatedArrayOrder.java revision 2877:62e285806e83 
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 8031744
27 * @summary Checks the annotation types targeting array types
28 */
29
30import com.sun.tools.javac.api.JavacTool;
31import java.io.File;
32import java.io.PrintWriter;
33import java.util.Arrays;
34import java.util.List;
35import java.util.Map;
36import java.util.HashMap;
37import java.lang.annotation.*;
38import javax.tools.JavaFileObject;
39import com.sun.source.tree.*;
40import com.sun.source.util.JavacTask;
41import com.sun.source.util.TreeScanner;
42import javax.tools.StandardJavaFileManager;
43
44
45public class AnnotatedArrayOrder {
46    public static void main(String[] args) throws Exception {
47        PrintWriter out = new PrintWriter(System.out, true);
48        JavacTool tool = JavacTool.create();
49        try (StandardJavaFileManager fm = tool.getStandardFileManager(null, null, null)) {
50            File testSrc = new File(System.getProperty("test.src"));
51            Iterable<? extends JavaFileObject> f =
52                fm.getJavaFileObjectsFromFiles(Arrays.asList(new File(testSrc, "AnnotatedArrayOrder.java")));
53            JavacTask task = tool.getTask(out, fm, null, null, null, f);
54            Iterable<? extends CompilationUnitTree> trees = task.parse();
55            out.flush();
56
57            Scanner s = new Scanner();
58            for (CompilationUnitTree t: trees)
59                s.scan(t, null);
60        }
61    }
62
63    private static class Scanner extends TreeScanner<Void,Void> {
64        public Void visitCompilationUnit(CompilationUnitTree node, Void ignore) {
65            super.visitCompilationUnit(node, ignore);
66            if (!expectedLocations.isEmpty()) {
67                throw new AssertionError("Didn't found all annotations: " + expectedLocations);
68            }
69            return null;
70        }
71
72        private void testAnnotations(List<? extends AnnotationTree> annos, int found) {
73            String annotation = annos.get(0).toString();
74
75            if (!expectedLocations.containsKey(annotation))
76                throw new AssertionError("Found unexpected annotation: " + annotation + expectedLocations);
77
78            int expected = expectedLocations.get(annotation);
79            if (found != expected)
80                throw new AssertionError("The expected array length for this error doesn't match");
81
82            expectedLocations.remove(annotation);
83        }
84
85        public Void visitAnnotatedType(AnnotatedTypeTree node, Void ignore) {
86            testAnnotations(node.getAnnotations(), arrayLength(node));
87            return super.visitAnnotatedType(node, ignore);
88        }
89
90        private int arrayLength(Tree tree) {
91            switch (tree.getKind()) {
92            case ARRAY_TYPE:
93                return 1 + arrayLength(((ArrayTypeTree)tree).getType());
94            case ANNOTATED_TYPE:
95                return arrayLength(((AnnotatedTypeTree)tree).getUnderlyingType());
96            default:
97                return 0;
98            }
99        }
100    }
101
102    // expectedLocations values:
103    static Map<String, Integer> expectedLocations = new HashMap<String, Integer>();
104
105    // visited code
106    @A String @C [] @B [] field;
107    static {
108        // Shouldn't find @A(), as it is field annotation
109        expectedLocations.put("@B()", 1);
110        expectedLocations.put("@C()", 2);
111    }
112
113    List<@D String @F [] @E []> typearg;
114    static {
115        expectedLocations.put("@D()", 0);
116        expectedLocations.put("@E()", 1);
117        expectedLocations.put("@F()", 2);
118    }
119
120    void varargSimple(@G String @H ... vararg1) { }
121    static {
122        // Shouldn't find @G(), as it is a parameter annotation
123        expectedLocations.put("@H()", 1);
124    }
125
126    void varargLong(@I String @L [] @K [] @J ... vararg2) { }
127    static {
128        // Shouldn't find @I(), as it is a parameter annotation
129        expectedLocations.put("@J()", 1);
130        expectedLocations.put("@K()", 2);
131        expectedLocations.put("@L()", 3);
132    }
133
134    @Target({ElementType.TYPE_USE, ElementType.TYPE_PARAMETER})
135    @interface A {}
136    @Target({ElementType.TYPE_USE, ElementType.TYPE_PARAMETER})
137    @interface B {}
138    @Target({ElementType.TYPE_USE, ElementType.TYPE_PARAMETER})
139    @interface C {}
140
141    @Target({ElementType.TYPE_USE, ElementType.TYPE_PARAMETER})
142    @interface D {}
143    @Target({ElementType.TYPE_USE, ElementType.TYPE_PARAMETER})
144    @interface E {}
145    @Target({ElementType.TYPE_USE, ElementType.TYPE_PARAMETER})
146    @interface F {}
147
148    @Target({ElementType.TYPE_USE, ElementType.TYPE_PARAMETER})
149    @interface G {}
150    @Target({ElementType.TYPE_USE, ElementType.TYPE_PARAMETER})
151    @interface H {}
152    @Target({ElementType.TYPE_USE, ElementType.TYPE_PARAMETER})
153    @interface I {}
154
155    @Target({ElementType.TYPE_USE, ElementType.TYPE_PARAMETER})
156    @interface J {}
157    @Target({ElementType.TYPE_USE, ElementType.TYPE_PARAMETER})
158    @interface K {}
159    @Target({ElementType.TYPE_USE, ElementType.TYPE_PARAMETER})
160    @interface L {}
161}
162