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11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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13  * accompanied this code).
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23 
24 /*
25  * @test
26  * @bug 6403466
27  * @summary javac TaskListener should be informed when annotation processing occurs
28  * @modules jdk.compiler/com.sun.tools.javac.api
29  *          jdk.compiler/com.sun.tools.javac.file
30  */
31 
32 import com.sun.source.util.*;
33 import java.io.*;
34 import java.lang.annotation.*;
35 import java.util.*;
36 import javax.annotation.processing.*;
37 import javax.lang.model.*;
38 import javax.lang.model.element.*;
39 import javax.lang.model.type.*;
40 import javax.lang.model.util.*;
41 import javax.tools.*;
42 import com.sun.tools.javac.api.JavacTool;
43 
44 @Wrap
45 @SupportedAnnotationTypes("Wrap")
46 public class T6403466 extends AbstractProcessor {
47 
48     static final String testSrcDir = System.getProperty("test.src");
49     static final String testClassDir = System.getProperty("test.classes");
50     static final String self = T6403466.class.getName();
51     static PrintWriter out = new PrintWriter(System.err, true);
52 
main(String[] args)53     public static void main(String[] args) throws IOException {
54         JavacTool tool = JavacTool.create();
55 
56         try (StandardJavaFileManager fm = tool.getStandardFileManager(null, null, null)) {
57             Iterable<? extends JavaFileObject> files =
58                 fm.getJavaFileObjectsFromFiles(Arrays.asList(new File(testSrcDir, self + ".java")));
59 
60             Iterable<String> options = Arrays.asList(
61                 "--add-exports", "jdk.compiler/com.sun.tools.javac.api=ALL-UNNAMED",
62                 "--processor-path", testClassDir,
63                 "-processor", self,
64                 "-s", ".",
65                 "-d", ".");
66             JavacTask task = tool.getTask(out, fm, null, options, null, files);
67 
68             VerifyingTaskListener vtl = new VerifyingTaskListener(new File(testSrcDir, self + ".out"));
69             task.setTaskListener(vtl);
70 
71             if (!task.call())
72                 throw new AssertionError("compilation failed");
73 
74             if (vtl.iter.hasNext() || vtl.errors)
75                 throw new AssertionError("comparison against golden file failed.");
76         }
77     }
78 
process(Set<? extends TypeElement> annos, RoundEnvironment rEnv)79     public boolean process(Set<? extends TypeElement> annos, RoundEnvironment rEnv) {
80         if (!rEnv.processingOver()) {
81             Filer filer = processingEnv.getFiler();
82             for (TypeElement anno: annos) {
83                 Set<? extends Element> elts = rEnv.getElementsAnnotatedWith(anno);
84                 System.err.println("anno: " + anno);
85                 System.err.println("elts: " + elts);
86                 for (TypeElement te: ElementFilter.typesIn(elts)) {
87                     try {
88                         Writer out = filer.createSourceFile(te.getSimpleName() + "Wrapper").openWriter();
89                         out.write("class " + te.getSimpleName() + "Wrapper { }");
90                         out.close();
91                     } catch (IOException ex) {
92                         ex.printStackTrace();
93                     }
94                 }
95 
96             }
97         }
98         return true;
99     }
100 
101     @Override
getSupportedSourceVersion()102     public SourceVersion getSupportedSourceVersion() {
103         return SourceVersion.latest();
104     }
105 }
106 
107 @Retention(RetentionPolicy.SOURCE)
108 @Target(ElementType.TYPE)
109 @interface Wrap {
110 }
111 
112 
113 class VerifyingTaskListener implements TaskListener {
VerifyingTaskListener(File ref)114     VerifyingTaskListener(File ref) throws IOException {
115         BufferedReader in = new BufferedReader(new FileReader(ref));
116         String line;
117         List<String> lines = new ArrayList<String>();
118         while ((line = in.readLine()) != null)
119             lines.add(line);
120         in.close();
121         iter = lines.iterator();
122     }
123 
started(TaskEvent e)124     public void started(TaskEvent e) {
125         check("Started " + toString(e));
126     }
finished(TaskEvent e)127     public void finished(TaskEvent e) {
128         check("Finished " + toString(e));
129     }
130 
131     // similar to TaskEvent.toString(), but just prints basename of the file
toString(TaskEvent e)132     private String toString(TaskEvent e) {
133         JavaFileObject file = e.getSourceFile();
134         return "TaskEvent["
135             + e.getKind() + ","
136             + (file == null ? null : new File(file.toUri().getPath()).getName()) + ","
137             // the compilation unit is identified by the file
138             + e.getTypeElement() + "]";
139     }
140 
check(String s)141     private void check(String s) {
142         System.out.println(s); // write a reference copy of expected output to stdout
143 
144         String ref = iter.hasNext() ? iter.next() : null;
145         line++;
146         if (!s.equals(ref)) {
147             if (ref != null)
148                 System.err.println(line + ": expected: " + ref);
149             System.err.println(line + ":    found: " + s);
150             errors = true;
151         }
152     }
153 
154     Iterator<String> iter;
155     int line;
156     boolean errors;
157 }
158