package org.reflections.scanners;
import javassist.bytecode.CodeAttribute;
import javassist.bytecode.LocalVariableAttribute;
import javassist.bytecode.MethodInfo;
import org.reflections.Store;
import org.reflections.adapters.MetadataAdapter;
import java.lang.reflect.Modifier;
import java.util.ArrayList;
import java.util.List;
import static org.reflections.util.Utils.join;
scans methods/constructors and indexes parameter names /** scans methods/constructors and indexes parameter names */
@SuppressWarnings("unchecked")
public class MethodParameterNamesScanner extends AbstractScanner {
@Override
public void scan(Object cls, Store store) {
final MetadataAdapter md = getMetadataAdapter();
for (Object method : md.getMethods(cls)) {
String key = md.getMethodFullKey(cls, method);
if (acceptResult(key)) {
CodeAttribute codeAttribute = ((MethodInfo) method).getCodeAttribute();
LocalVariableAttribute table = codeAttribute != null ? (LocalVariableAttribute) codeAttribute.getAttribute(LocalVariableAttribute.tag) : null;
int length = table != null ? table.tableLength() : 0;
int i = Modifier.isStatic(((MethodInfo) method).getAccessFlags()) ? 0 : 1; //skip this
if (i < length) {
List<String> names = new ArrayList<>(length - i);
while (i < length) names.add(((MethodInfo) method).getConstPool().getUtf8Info(table.nameIndex(i++)));
put(store, key, join(names, ", "));
}
}
}
}
}