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package org.netbeans.modules.scala.debugger.projects;
import com.sun.source.tree.ClassTree;
import com.sun.source.util.TreePathScanner;
import com.sun.source.util.Trees;
import javax.lang.model.element.TypeElement;
import javax.lang.model.util.Elements;
/**
* Search for a class matching the given binary filter.
*
* @author martin
*/
class ClassScanner extends TreePathScanner<TypeElement, Void> {
private Trees trees;
private Elements elements;
private String binaryClassName;
private String[] classExcludeNames;
public ClassScanner(Trees trees, Elements elements, String binaryClassName, String[] classExcludeNames) {
this.trees = trees;
this.elements = elements;
this.binaryClassName = binaryClassName;
this.classExcludeNames = classExcludeNames;
}
@Override
public TypeElement reduce(TypeElement arg0, TypeElement arg1) {
if (arg0 != null) {
return arg0;
} else {
return arg1;
}
}
@Override
public TypeElement visitClass(ClassTree arg0, Void arg1) {
TypeElement typeElement = (TypeElement) trees.getElement(getCurrentPath());
if (typeElement == null) {
return super.visitClass(arg0, arg1);
}
String binaryName = elements.getBinaryName(typeElement).toString();
if (match(binaryName)) {
return typeElement;
} else {
return super.visitClass(arg0, arg1);
}
}
private boolean match(String binaryName) {
if (match(binaryName, binaryClassName)) {
if (classExcludeNames != null) {
for (String classExcludeName : classExcludeNames) {
if (match(binaryName, classExcludeName)) {
return false;
}
}
}
return true;
}
return false;
}
private static boolean match (String name, String pattern) {
if (pattern.startsWith ("*"))
return name.endsWith (pattern.substring (1));
else
if (pattern.endsWith ("*"))
return name.startsWith (
pattern.substring (0, pattern.length () - 1)
);
return name.equals (pattern);
}
}