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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
* 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 6993305
* @ summary starting position of a method without modifiers and with type parameters is incorrect
* @ modules jdk . compiler / com . sun . tools . javac . api
* jdk . compiler / com . sun . tools . javac . file
*/
import java.io.File;
import javax.tools.JavaFileObject;
import javax.tools.StandardJavaFileManager;
import com.sun.source.tree.CompilationUnitTree;
import com.sun.source.tree.MethodTree;
import com.sun.source.util.JavacTask;
import com.sun.source.util.SourcePositions;
import com.sun.source.util.TreeScanner;
import com.sun.source.util.Trees;
import com.sun.tools.javac.api.JavacTool;
import java.io.IOException;
/*
* Test verifies the starting position of all methods by computing the start position
* of each method as the first non - white character on the first line containing
* ( " " + methodName + " ( " ) , and then comparing this value against the reported
* value in the SourcePositions table .
*/
public class T6993305 {
<T> void test1(T t) { } // this is the primary case to be tested
public <T> void test2(T t) { }
@Deprecated <T> void test3(T t) { }
public static void main(String... args) throws Exception {
new T6993305().run();
}
void run() throws Exception {
File testSrc = new File(System.getProperty("test.src" ));
JavacTool tool = JavacTool.create();
try (StandardJavaFileManager fm = tool.getStandardFileManager(null , null , null )) {
File f = new File(testSrc, T6993305.class .getSimpleName() + ".java" );
Iterable<? extends JavaFileObject> fos = fm.getJavaFileObjects(f);
JavacTask task = tool.getTask(null , fm, null , null , null , fos);
Iterable<? extends CompilationUnitTree> cus = task.parse();
TestScanner s = new TestScanner();
s.scan(cus, task);
if (errors > 0 )
throw new Exception(errors + " errors occurred" );
}
}
void error(String msg) {
System.err.println("Error: " + msg);
errors++;
}
int errors;
class TestScanner extends TreeScanner<Void , JavacTask> {
CompilationUnitTree cu;
SourcePositions sourcePositions;
String source;
void show(String label, int pos) {
System.err.println(label + ": " +
source.substring(pos, Math.min(source.length(), pos + 10 )));
}
@Override public Void visitCompilationUnit(CompilationUnitTree tree, JavacTask task) {
cu = tree;
Trees trees = Trees.instance(task);
sourcePositions = trees.getSourcePositions();
try {
source = String.valueOf(tree.getSourceFile().getCharContent(true ));
} catch (IOException e) {
throw new Error(e);
}
return super .visitCompilationUnit(tree, task);
}
// this is the core of the test
@Override public Void visitMethod(MethodTree tree, JavacTask task) {
String name = String.valueOf(tree.getName());
int pos = source.indexOf(" " + name + "(" );
while (source.charAt(pos - 1 ) != '\n' ) pos--;
while (source.charAt(pos) == ' ' ) pos++;
int expectedStart = pos;
int reportedStart = (int ) sourcePositions.getStartPosition(cu, tree);
System.err.println("Method " + name
+ " expectedStart:" + expectedStart
+ " reportedStart:" + reportedStart);
if (expectedStart != reportedStart) {
error("Unexpected value for " + name);
show("expected" , expectedStart);
show("reported" , reportedStart);
}
return super .visitMethod(tree, task);
}
}
}
Messung V0.5 in Prozent C=56 H=97 G=79
¤ Dauer der Verarbeitung: 0.9 Sekunden
(vorverarbeitet am 2026-06-10)
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