1 /*
2 * Copyright 2009 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 */
23
24 /*
25 * @test
26 * @bug 6471577 6517779
27 * @summary Test Elements.getConstantExpression
28 * @author Joseph D. Darcy
29 * @build TestGetConstantExpression
30 * @compile -processor TestGetConstantExpression Foo.java
31 */
32
33 import java.util.Set;
34 import javax.annotation.processing.*;
35 import javax.lang.model.SourceVersion;
36 import static javax.lang.model.SourceVersion.*;
37 import javax.lang.model.element.*;
38 import javax.lang.model.util.*;
39 import static javax.lang.model.util.ElementFilter.*;
40 import static javax.tools.Diagnostic.Kind.*;
41 import static javax.tools.StandardLocation.*;
42 import java.io.*;
43
44 /**
45 * Test basic workings of Elements.getConstantExpression.
46 */
47 @SupportedAnnotationTypes("*")
48 public class TestGetConstantExpression extends AbstractProcessor {
49 private Elements eltUtils;
50 private Filer filer;
51 private int round = 1;
52
53 /**
54 * Check expected behavior on classes and packages.
55 */
56 public boolean process(Set<? extends TypeElement> annotations,
57 RoundEnvironment roundEnv) {
58 int errors = 0;
59 boolean processingOver = roundEnv.processingOver();
60
61 if (!processingOver && round == 1) {
62 errors += expectIllegalArgumentException(null);
63 errors += expectIllegalArgumentException(this);
64
65 // Generate source code with various constant values and
66 // make sure it compiles.
67
68 try {
69 PrintWriter pw = new PrintWriter(filer.createSourceFile("ConstantTest").openWriter());
70 try {
71 Boolean[] booleans = {true, false};
72 Byte[] bytes = {Byte.MIN_VALUE, -1, 0, 1, Byte.MAX_VALUE};
73 Short[] shorts = {Short.MIN_VALUE, -1, 0, 1, Short.MAX_VALUE};
74 Integer[] ints = {Integer.MIN_VALUE, -1, 0, 1, Integer.MAX_VALUE};
75 Long[] longs = {Long.MIN_VALUE, -1L, 0L,1L, Long.MAX_VALUE};
76 Character[] chars = {Character.MIN_VALUE, ' ', '\t', 'a', 'b', 'c', '~', Character.MAX_VALUE};
77 Float[] floats = {Float.NaN, Float.NEGATIVE_INFINITY, -1.0f, -0.0f, 0.0f, 1.0f, Float.POSITIVE_INFINITY};
78 Double[] doubles = {Double.NaN, Double.NEGATIVE_INFINITY, -1.0, -0.0, 0.0, 1.0, Double.POSITIVE_INFINITY};
79
80 pw.println("class ConstantTest {");
81 pw.println(String.format(" private static boolean[] booleans = {%s};",
82 printConstants(booleans)));
83 pw.println(String.format(" private static byte[] bytes = {%s};",
84 printConstants(bytes)));
85 pw.println(String.format(" private static short[] shorts = {%s};",
86 printConstants(shorts)));
87 pw.println(String.format(" private static int[] ints = {%s};",
88 printConstants(ints)));
89 pw.println(String.format(" private static long[] longs = {%s};",
90 printConstants(longs)));
91 pw.println(String.format(" private static char[] chars = {%s};",
92 printConstants(chars)));
93 pw.println(String.format(" private static float[] floats = {%s};",
94 printConstants(floats)));
95 pw.println(String.format(" private static double[] doubles = {%s};",
96 printConstants(doubles)));
97 pw.println("}");
98 } finally {
99 pw.close();
100 }
101 } catch(IOException io) {
102 throw new RuntimeException(io);
103 }
104 round++;
105 } else if (processingOver) {
106 if (errors > 0) {
107 throw new RuntimeException();
108 }
109 }
110 return true;
111 }
112
113 String printConstants(Object[] constants) {
114 StringBuilder sb = new StringBuilder();
115
116 for(Object o : constants) {
117 sb.append(eltUtils.getConstantExpression(o));
118 sb.append(", ");
119 }
120 return sb.toString();
121 }
122
123 int expectIllegalArgumentException(Object o) {
124 String s = "";
125 try {
126 s = eltUtils.getConstantExpression(o);
127 System.err.println("Unexpected string returned: " + s);
128 return 1;
129 } catch (IllegalArgumentException iae) {
130 return 0;
131 }
132 }
133
134 public SourceVersion getSupportedSourceVersion() {
135 return SourceVersion.latest();
136 }
137
138 public void init(ProcessingEnvironment processingEnv) {
139 super.init(processingEnv);
140 eltUtils = processingEnv.getElementUtils();
141 filer = processingEnv.getFiler();
142 }
143 }