JavacTool tool = JavacTool.create(); try (StandardJavaFileManager fm = tool.getStandardFileManager(null, null, null)) {
fm.setLocation(StandardLocation.CLASS_PATH, Arrays.asList(testClasses));
Iterable<? extends JavaFileObject> files =
fm.getJavaFileObjectsFromFiles(Arrays.asList(new File(testSrc, T6412669.class.getName()+".java")));
String[] opts = { "-proc:only", "-processor", T6412669.class.getName(), "--add-exports", "jdk.compiler/com.sun.tools.javac.api=ALL-UNNAMED"
};
StringWriter sw = new StringWriter();
JavacTask task = tool.getTask(sw, fm, null, Arrays.asList(opts), null, files); boolean ok = task.call();
String out = sw.toString(); if (!out.isEmpty())
System.err.println(out); if (!ok) thrownew AssertionError("compilation of test program failed"); // verify we found an annotated element to exercise the SourcePositions API if (!out.contains("processing element")) thrownew AssertionError("expected text not found in compilation output");
}
}
publicboolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
Trees trees = Trees.instance(processingEnv);
SourcePositions sp = trees.getSourcePositions();
Messager m = processingEnv.getMessager();
m.printNote("processing annotations"); int count = 0; for (TypeElement anno: annotations) {
count++;
m.printNote(" processing annotation " + anno); for (Element e: roundEnv.getElementsAnnotatedWith(anno)) {
m.printNote(" processing element " + e);
TreePath p = trees.getPath(e); long start = sp.getStartPosition(p.getCompilationUnit(), p.getLeaf()); long end = sp.getEndPosition(p.getCompilationUnit(), p.getLeaf());
Diagnostic.Kind k = (start > 0 && end > 0 && start < end
? Diagnostic.Kind.NOTE : Diagnostic.Kind.ERROR);
m.printMessage(k, "test [" + start + "," + end + "]", e);
}
} if (count == 0)
m.printNote("no annotations found"); returntrue;
}
@Override public SourceVersion getSupportedSourceVersion() { return SourceVersion.latest();
}
}
Messung V0.5 in Prozent
¤ Dauer der Verarbeitung: 0.12 Sekunden
(vorverarbeitet am 2026-06-10)
¤
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