| package org.checkerframework.dataflow.cfg.node; |
| |
| import com.sun.source.tree.InstanceOfTree; |
| import com.sun.source.tree.Tree; |
| import java.util.Collection; |
| import java.util.Collections; |
| import javax.lang.model.type.TypeKind; |
| import javax.lang.model.type.TypeMirror; |
| import javax.lang.model.util.Types; |
| import org.checkerframework.dataflow.util.HashCodeUtils; |
| |
| /** |
| * A node for the instanceof operator: |
| * |
| * <p><em>x</em> instanceof <em>Point</em> |
| * |
| * @author Stefan Heule |
| * @author Charlie Garrett |
| */ |
| public class InstanceOfNode extends Node { |
| |
| /** The value being tested. */ |
| protected Node operand; |
| |
| /** The reference type being tested against. */ |
| protected TypeMirror refType; |
| |
| /** The tree associated with this node. */ |
| protected final InstanceOfTree tree; |
| |
| public InstanceOfNode(Tree tree, Node operand, TypeMirror refType, Types types) { |
| super(types.getPrimitiveType(TypeKind.BOOLEAN)); |
| assert tree.getKind() == Tree.Kind.INSTANCE_OF; |
| this.tree = (InstanceOfTree) tree; |
| this.operand = operand; |
| this.refType = refType; |
| } |
| |
| public Node getOperand() { |
| return operand; |
| } |
| |
| @Override |
| public TypeMirror getType() { |
| return type; |
| } |
| |
| public TypeMirror getRefType() { |
| return refType; |
| } |
| |
| @Override |
| public InstanceOfTree getTree() { |
| return tree; |
| } |
| |
| @Override |
| public <R, P> R accept(NodeVisitor<R, P> visitor, P p) { |
| return visitor.visitInstanceOf(this, p); |
| } |
| |
| @Override |
| public String toString() { |
| return "(" + getOperand() + " instanceof " + getRefType() + ")"; |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (obj == null || !(obj instanceof InstanceOfNode)) { |
| return false; |
| } |
| InstanceOfNode other = (InstanceOfNode) obj; |
| // TODO: TypeMirror.equals may be too restrictive. |
| // Check whether Types.isSameType is the better comparison. |
| return getOperand().equals(other.getOperand()) && getRefType().equals(other.getRefType()); |
| } |
| |
| @Override |
| public int hashCode() { |
| return HashCodeUtils.hash(getOperand()); |
| } |
| |
| @Override |
| public Collection<Node> getOperands() { |
| return Collections.singletonList(getOperand()); |
| } |
| } |