diff options
Diffstat (limited to 'third_party/checker_framework_dataflow/java/org/checkerframework/dataflow/cfg/node/UnsignedRightShiftNode.java')
-rw-r--r-- | third_party/checker_framework_dataflow/java/org/checkerframework/dataflow/cfg/node/UnsignedRightShiftNode.java | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/third_party/checker_framework_dataflow/java/org/checkerframework/dataflow/cfg/node/UnsignedRightShiftNode.java b/third_party/checker_framework_dataflow/java/org/checkerframework/dataflow/cfg/node/UnsignedRightShiftNode.java new file mode 100644 index 0000000000..0ddea5b6c6 --- /dev/null +++ b/third_party/checker_framework_dataflow/java/org/checkerframework/dataflow/cfg/node/UnsignedRightShiftNode.java @@ -0,0 +1,83 @@ +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.Tree; +import com.sun.source.tree.Tree.Kind; + +/** + * A node for bitwise right shift operations with zero extension: + * + * <pre> + * <em>expression</em> >>> <em>expression</em> + * </pre> + * + * @author Stefan Heule + * @author Charlie Garrett + * + */ +public class UnsignedRightShiftNode extends Node { + + protected Tree tree; + protected Node left; + protected Node right; + + public UnsignedRightShiftNode(Tree tree, Node left, Node right) { + super(InternalUtils.typeOf(tree)); + assert tree.getKind() == Kind.UNSIGNED_RIGHT_SHIFT; + this.tree = tree; + this.left = left; + this.right = right; + } + + public Node getLeftOperand() { + return left; + } + + public Node getRightOperand() { + return right; + } + + @Override + public Tree getTree() { + return tree; + } + + @Override + public <R, P> R accept(NodeVisitor<R, P> visitor, P p) { + return visitor.visitUnsignedRightShift(this, p); + } + + @Override + public String toString() { + return "(" + getLeftOperand() + " >>> " + getRightOperand() + ")"; + } + + @Override + public boolean equals(Object obj) { + if (obj == null || !(obj instanceof UnsignedRightShiftNode)) { + return false; + } + UnsignedRightShiftNode other = (UnsignedRightShiftNode) obj; + return getLeftOperand().equals(other.getLeftOperand()) + && getRightOperand().equals(other.getRightOperand()); + } + + @Override + public int hashCode() { + return HashCodeUtils.hash(getLeftOperand(), getRightOperand()); + } + + @Override + public Collection<Node> getOperands() { + LinkedList<Node> list = new LinkedList<Node>(); + list.add(getLeftOperand()); + list.add(getRightOperand()); + return list; + } +} |