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package org.checkerframework.dataflow.cfg.node;
/*>>>
import org.checkerframework.checker.nullness.qual.Nullable;
*/
import com.sun.source.tree.ClassTree;
import com.sun.source.tree.IdentifierTree;
import com.sun.source.tree.MemberSelectTree;
import com.sun.source.tree.Tree;
import java.util.Collection;
import java.util.Collections;
import javax.lang.model.element.Element;
import javax.lang.model.type.TypeMirror;
import org.checkerframework.dataflow.util.HashCodeUtils;
import org.checkerframework.javacutil.InternalUtils;
import org.checkerframework.javacutil.TreeUtils;
/**
* A node representing a class name used in an expression such as a static method invocation.
*
* <p>parent.<em>class</em> .forName(...)
*
* @author Stefan Heule
* @author Charlie Garrett
*/
public class ClassNameNode extends Node {
protected final Tree tree;
/** The class named by this node */
protected final Element element;
/** The parent name, if any. */
protected final /*@Nullable*/ Node parent;
public ClassNameNode(IdentifierTree tree) {
super(InternalUtils.typeOf(tree));
assert tree.getKind() == Tree.Kind.IDENTIFIER;
this.tree = tree;
this.element = TreeUtils.elementFromUse(tree);
this.parent = null;
}
public ClassNameNode(ClassTree tree) {
super(InternalUtils.typeOf(tree));
assert tree.getKind() == Tree.Kind.CLASS
|| tree.getKind() == Tree.Kind.ENUM
|| tree.getKind() == Tree.Kind.INTERFACE
|| tree.getKind() == Tree.Kind.ANNOTATION_TYPE;
this.tree = tree;
this.element = TreeUtils.elementFromDeclaration(tree);
this.parent = null;
}
public ClassNameNode(MemberSelectTree tree, Node parent) {
super(InternalUtils.typeOf(tree));
this.tree = tree;
this.element = TreeUtils.elementFromUse(tree);
this.parent = parent;
}
public ClassNameNode(TypeMirror type, Element element) {
super(type);
this.tree = null;
this.element = element;
this.parent = null;
}
public Element getElement() {
return element;
}
public Node getParent() {
return parent;
}
@Override
public Tree getTree() {
return tree;
}
@Override
public <R, P> R accept(NodeVisitor<R, P> visitor, P p) {
return visitor.visitClassName(this, p);
}
@Override
public String toString() {
return getElement().getSimpleName().toString();
}
@Override
public boolean equals(Object obj) {
if (obj == null || !(obj instanceof ClassNameNode)) {
return false;
}
ClassNameNode other = (ClassNameNode) obj;
if (getParent() == null) {
return other.getParent() == null && getElement().equals(other.getElement());
} else {
return getParent().equals(other.getParent()) && getElement().equals(other.getElement());
}
}
@Override
public int hashCode() {
if (parent == null) {
return HashCodeUtils.hash(getElement());
}
return HashCodeUtils.hash(getElement(), getParent());
}
@Override
public Collection<Node> getOperands() {
if (parent == null) {
return Collections.emptyList();
}
return Collections.singleton(parent);
}
}
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