1 /*
2 * Copyright (c) 2009, 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 * @bug 6471577 6517779
27 * @summary Test Elements.getConstantExpression
28 * @author Joseph D. Darcy
29 * @library ../../../../lib
30 * @build JavacTestingAbstractProcessor
31 * @build TestGetConstantExpression
32 * @compile -processor TestGetConstantExpression Foo.java
33 */
34
35 import java.util.Set;
36 import javax.annotation.processing.*;
37 import javax.lang.model.SourceVersion;
38 import static javax.lang.model.SourceVersion.*;
39 import javax.lang.model.element.*;
40 import javax.lang.model.util.*;
41 import static javax.lang.model.util.ElementFilter.*;
42 import static javax.tools.Diagnostic.Kind.*;
43 import static javax.tools.StandardLocation.*;
44 import java.io.*;
45
46 /**
47 * Test basic workings of Elements.getConstantExpression.
48 */
49 public class TestGetConstantExpression extends JavacTestingAbstractProcessor {
50 private int round = 1;
51
52 /**
53 * Check expected behavior on classes and packages.
54 */
55 public boolean process(Set<? extends TypeElement> annotations,
56 RoundEnvironment roundEnv) {
57 int errors = 0;
58 boolean processingOver = roundEnv.processingOver();
59
60 if (!processingOver && round == 1) {
61 errors += expectIllegalArgumentException(null);
62 errors += expectIllegalArgumentException(this);
63
64 // Generate source code with various constant values and
65 // make sure it compiles.
66
67 try {
68 PrintWriter pw = new PrintWriter(filer.createSourceFile("ConstantTest").openWriter());
69 try {
70 Boolean[] booleans = {true, false};
71 Byte[] bytes = {Byte.MIN_VALUE, -1, 0, 1, Byte.MAX_VALUE};
72 Short[] shorts = {Short.MIN_VALUE, -1, 0, 1, Short.MAX_VALUE};
73 Integer[] ints = {Integer.MIN_VALUE, -1, 0, 1, Integer.MAX_VALUE};
74 Long[] longs = {Long.MIN_VALUE, -1L, 0L,1L, Long.MAX_VALUE};
75 Character[] chars = {Character.MIN_VALUE, ' ', '\t', 'a', 'b', 'c', '~', Character.MAX_VALUE};
76 Float[] floats = {Float.NaN, Float.NEGATIVE_INFINITY, -1.0f, -0.0f, 0.0f, 1.0f, Float.POSITIVE_INFINITY};
77 Double[] doubles = {Double.NaN, Double.NEGATIVE_INFINITY, -1.0, -0.0, 0.0, 1.0, Double.POSITIVE_INFINITY};
78
79 pw.println("class ConstantTest {");
80 pw.println(String.format(" private static boolean[] booleans = {%s};",
81 printConstants(booleans)));
82 pw.println(String.format(" private static byte[] bytes = {%s};",
83 printConstants(bytes)));
84 pw.println(String.format(" private static short[] shorts = {%s};",
85 printConstants(shorts)));
86 pw.println(String.format(" private static int[] ints = {%s};",
87 printConstants(ints)));
88 pw.println(String.format(" private static long[] longs = {%s};",
89 printConstants(longs)));
90 pw.println(String.format(" private static char[] chars = {%s};",
91 printConstants(chars)));
92 pw.println(String.format(" private static float[] floats = {%s};",
93 printConstants(floats)));
94 pw.println(String.format(" private static double[] doubles = {%s};",
95 printConstants(doubles)));
96 pw.println("}");
97 } finally {
98 pw.close();
99 }
100 } catch(IOException io) {
101 throw new RuntimeException(io);
102 }
103 round++;
104 } else if (processingOver) {
105 if (errors > 0) {
106 throw new RuntimeException();
107 }
108 }
109 return true;
110 }
111
112 String printConstants(Object[] constants) {
113 StringBuilder sb = new StringBuilder();
114
115 for(Object o : constants) {
116 sb.append(eltUtils.getConstantExpression(o));
117 sb.append(", ");
118 }
119 return sb.toString();
120 }
121
122 int expectIllegalArgumentException(Object o) {
123 String s = "";
124 try {
125 s = eltUtils.getConstantExpression(o);
126 System.err.println("Unexpected string returned: " + s);
127 return 1;
128 } catch (IllegalArgumentException iae) {
129 return 0;
130 }
131 }
132 }