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* Copyright ( c ) 2013 , 2015 , Oracle and / or its affiliates . All rights reserved .
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER .
*
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* under the terms of the GNU General Public License version 2 only , as
* published by the Free Software Foundation .
*
* This code is distributed in the hope that it will be useful , but WITHOUT
* ANY WARRANTY ; without even the implied warranty of MERCHANTABILITY or
* 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
* accompanied this code ) .
*
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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
* @ bug 8023835
* @ summary Verify that TreeMaker . QualIdent ( Symbol ) field access cascade ends with
* the top - level package ( when no toplevel is set in TreeMaker )
* @ modules jdk . compiler / com . sun . tools . javac . api
* jdk . compiler / com . sun . tools . javac . code
* jdk . compiler / com . sun . tools . javac . tree
* jdk . compiler / com . sun . tools . javac . util
* @ run main MakeQualIdent
*/
import com.sun.source.tree.IdentifierTree;
import com.sun.source.tree.MemberSelectTree;
import com.sun.source.tree.Tree;
import com.sun.source.util.JavacTask;
import com.sun.source.util.TreeScanner;
import com.sun.tools.javac.api.JavacTaskImpl;
import com.sun.tools.javac.api.JavacTool;
import com.sun.tools.javac.code.Symtab;
import com.sun.tools.javac.tree.TreeMaker;
import com.sun.tools.javac.util.Context;
import java.util.ArrayList;
public class MakeQualIdent {
public static void main(String... args) throws Exception {
JavacTool tool = JavacTool.create();
JavacTask task = tool.getTask(null , null , null , new ArrayList<String>(), null , null );
Context ctx = ((JavacTaskImpl)task).getContext();
TreeMaker treeMaker = TreeMaker.instance(ctx);
Symtab syms = Symtab.instance(ctx);
String stringTree = printTree(treeMaker.QualIdent(syms.stringType.tsym));
if (!"java.lang.String" .equals(stringTree)) {
throw new IllegalStateException(stringTree);
}
}
private static String printTree(Tree tree) {
final StringBuilder result = new StringBuilder();
new TreeScanner<Void , Void >() {
@Override public Void visitIdentifier(IdentifierTree node, Void p) {
result.append(node.getName());
return super .visitIdentifier(node, p);
}
@Override public Void visitMemberSelect(MemberSelectTree node, Void p) {
scan(node.getExpression(), null );
result.append("." );
result.append(node.getIdentifier());
return null ;
}
}.scan(tree, null );
return result.toString();
}
}
Messung V0.5 in Prozent C=86 H=90 G=87
¤ Dauer der Verarbeitung: 0.11 Sekunden
(vorverarbeitet am 2026-06-10)
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