| package org.checkerframework.dataflow.cfg.node; |
| |
| import java.util.Collection; |
| import java.util.LinkedList; |
| |
| import org.checkerframework.dataflow.util.HashCodeUtils; |
| |
| import org.checkerframework.javacutil.InternalUtils; |
| |
| import com.sun.source.tree.ConditionalExpressionTree; |
| import com.sun.source.tree.Tree.Kind; |
| |
| /** |
| * A node for a conditional expression: |
| * |
| * <pre> |
| * <em>expression</em> ? <em>expression</em> : <em>expression</em> |
| * </pre> |
| * |
| * @author Stefan Heule |
| * @author Charlie Garrett |
| * |
| */ |
| public class TernaryExpressionNode extends Node { |
| |
| protected ConditionalExpressionTree tree; |
| protected Node condition; |
| protected Node thenOperand; |
| protected Node elseOperand; |
| |
| public TernaryExpressionNode(ConditionalExpressionTree tree, Node condition, |
| Node thenOperand, Node elseOperand) { |
| super(InternalUtils.typeOf(tree)); |
| assert tree.getKind().equals(Kind.CONDITIONAL_EXPRESSION); |
| this.tree = tree; |
| this.condition = condition; |
| this.thenOperand = thenOperand; |
| this.elseOperand = elseOperand; |
| } |
| |
| public Node getConditionOperand() { |
| return condition; |
| } |
| |
| public Node getThenOperand() { |
| return thenOperand; |
| } |
| |
| public Node getElseOperand() { |
| return elseOperand; |
| } |
| |
| @Override |
| public ConditionalExpressionTree getTree() { |
| return tree; |
| } |
| |
| @Override |
| public <R, P> R accept(NodeVisitor<R, P> visitor, P p) { |
| return visitor.visitTernaryExpression(this, p); |
| } |
| |
| @Override |
| public String toString() { |
| return "(" + getConditionOperand() + " ? " + getThenOperand() + " : " |
| + getElseOperand() + ")"; |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (obj == null || !(obj instanceof TernaryExpressionNode)) { |
| return false; |
| } |
| TernaryExpressionNode other = (TernaryExpressionNode) obj; |
| return getConditionOperand().equals(other.getConditionOperand()) |
| && getThenOperand().equals(other.getThenOperand()) |
| && getElseOperand().equals(other.getElseOperand()); |
| } |
| |
| @Override |
| public int hashCode() { |
| return HashCodeUtils.hash(getConditionOperand(), getThenOperand(), |
| getElseOperand()); |
| } |
| |
| @Override |
| public Collection<Node> getOperands() { |
| LinkedList<Node> list = new LinkedList<Node>(); |
| list.add(getConditionOperand()); |
| list.add(getThenOperand()); |
| list.add(getElseOperand()); |
| return list; |
| } |
| } |