| package org.checkerframework.dataflow.cfg.node; |
| |
| import com.sun.source.tree.LiteralTree; |
| import com.sun.source.tree.Tree; |
| import java.util.Collection; |
| import java.util.Collections; |
| |
| /** |
| * A node for a character literal. For example: |
| * |
| * <pre> |
| * <em>'a'</em> |
| * <em>'\t'</em> |
| * <em>'\u03a9'</em> |
| * </pre> |
| * |
| * @author Stefan Heule |
| * @author Charlie Garrett |
| */ |
| public class CharacterLiteralNode extends ValueLiteralNode { |
| |
| public CharacterLiteralNode(LiteralTree t) { |
| super(t); |
| assert t.getKind().equals(Tree.Kind.CHAR_LITERAL); |
| } |
| |
| @Override |
| public Character getValue() { |
| return (Character) tree.getValue(); |
| } |
| |
| @Override |
| public <R, P> R accept(NodeVisitor<R, P> visitor, P p) { |
| return visitor.visitCharacterLiteral(this, p); |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| // test that obj is a CharacterLiteralNode |
| if (obj == null || !(obj instanceof CharacterLiteralNode)) { |
| return false; |
| } |
| // super method compares values |
| return super.equals(obj); |
| } |
| |
| @Override |
| public Collection<Node> getOperands() { |
| return Collections.emptyList(); |
| } |
| } |