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*
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
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*
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* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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/*
* @test
* @summary Checks that the interaction between annotated and unannotated
* array levels in array creation trees
* @modules jdk.compiler/com.sun.tools.javac.api
* jdk.compiler/com.sun.tools.javac.file
* jdk.compiler/com.sun.tools.javac.tree
* jdk.compiler/com.sun.tools.javac.util
*/
import com.sun.tools.javac.api.JavacTool;
import com.sun.tools.javac.tree.JCTree.JCNewArray;
import java.lang.annotation.*;
import java.io.File;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.HashMap;
import javax.tools.JavaFileManager;
import javax.tools.JavaFileObject;
import com.sun.source.tree.*;
import com.sun.source.util.JavacTask;
import com.sun.source.util.TreeScanner;
import javax.tools.StandardJavaFileManager;
public class ArrayCreationTree {
public static void main(String[] args) throws Exception {
PrintWriter out = new PrintWriter(System.out, true);
JavacTool tool = JavacTool.create();
try (StandardJavaFileManager fm = tool.getStandardFileManager(null, null, null)) {
File testSrc = new File(System.getProperty("test.src"));
Iterable<? extends JavaFileObject> f =
fm.getJavaFileObjectsFromFiles(Arrays.asList(new File(testSrc, "ArrayCreationTree.java")));
JavacTask task = tool.getTask(out, fm, null, null, null, f);
Iterable<? extends CompilationUnitTree> trees = task.parse();
out.flush();
Scanner s = new Scanner();
for (CompilationUnitTree t: trees)
s.scan(t, null);
}
}
private static class Scanner extends TreeScanner<Void,Void> {
int foundAnnotations = 0;
public Void visitCompilationUnit(CompilationUnitTree node, Void ignore) {
super.visitCompilationUnit(node, ignore);
if (foundAnnotations != expectedAnnotations) {
throw new AssertionError("Expected " + expectedAnnotations +
" annotations but found: " + foundAnnotations);
}
return null;
}
private void testAnnotations(List<? extends AnnotationTree> annos, int found) {
if (annos.isEmpty()) return;
String annotation = annos.get(0).toString();
foundAnnotations++;
int expected = -1;
if (annotation.equals("@A()"))
expected = 0;
else if (annotation.equals("@B()"))
expected = 1;
else if (annotation.equals("@C()"))
expected = 2;
else
throw new AssertionError("found an unexpected annotation: " + annotation);
if (found != expected) {
throw new AssertionError("Unexpected found length" +
", found " + found + " but expected " + expected);
}
}
public Void visitAnnotatedType(AnnotatedTypeTree node, Void ignore) {
testAnnotations(node.getAnnotations(), arrayLength(node));
return super.visitAnnotatedType(node, ignore);
}
public Void visitNewArray(NewArrayTree node, Void ignore) {
// the Tree API hasn't been updated to expose annotations yet
JCNewArray newArray = (JCNewArray)node;
int totalLength = node.getDimensions().size()
+ arrayLength(node.getType())
+ ((newArray.getInitializers() != null) ? 1 : 0);
testAnnotations(newArray.annotations, totalLength);
int count = 0;
for (List<? extends AnnotationTree> annos : newArray.dimAnnotations) {
testAnnotations(annos, totalLength - count);
count++;
}
return super.visitNewArray(node, ignore);
}
private int arrayLength(Tree tree) {
// TODO: the tree is null when called with node.getType(). Why?
if (tree==null) return -1;
switch (tree.getKind()) {
case ARRAY_TYPE:
return 1 + arrayLength(((ArrayTypeTree)tree).getType());
case ANNOTATED_TYPE:
return arrayLength(((AnnotatedTypeTree)tree).getUnderlyingType());
default:
return 0;
}
}
}
static int expectedAnnotations = 21;
Object a1 = new @A Object @C [2] @B [1];
Object b1 = new @A Object @C [2] @B [ ];
Object c1 = new @A Object @C [ ] @B [ ] { };
Object a2 = new @A Object @C [2] [1];
Object b2 = new @A Object @C [2] [ ];
Object c2 = new @A Object @C [ ] [ ] { };
Object a3 = new @A Object [2] @B [1];
Object b3 = new @A Object [2] @B [ ];
Object c3 = new @A Object [ ] @B [ ] { };
@Target({ElementType.TYPE_USE, ElementType.TYPE_PARAMETER})
@interface A {}
@Target({ElementType.TYPE_USE, ElementType.TYPE_PARAMETER})
@interface B {}
@Target({ElementType.TYPE_USE, ElementType.TYPE_PARAMETER})
@interface C {}
}