| 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 short literal. For example: |
| * |
| * <pre> |
| * <em>5</em> |
| * <em>0x8fff</em> |
| * </pre> |
| * |
| * Java source and the AST representation do not have "short" literals. They have integer literals |
| * that may be narrowed to shorts depending on context. If we use explicit NarrowingConversionNodes, |
| * do we need ShortLiteralNodes too? TODO: Decide this question. |
| * |
| * @author Stefan Heule |
| * @author Charlie Garrett |
| */ |
| public class ShortLiteralNode extends ValueLiteralNode { |
| |
| public ShortLiteralNode(LiteralTree t) { |
| super(t); |
| assert t.getKind().equals(Tree.Kind.INT_LITERAL); |
| } |
| |
| @Override |
| public Short getValue() { |
| return (Short) tree.getValue(); |
| } |
| |
| @Override |
| public <R, P> R accept(NodeVisitor<R, P> visitor, P p) { |
| return visitor.visitShortLiteral(this, p); |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| // test that obj is a ShortLiteralNode |
| if (obj == null || !(obj instanceof ShortLiteralNode)) { |
| return false; |
| } |
| // super method compares values |
| return super.equals(obj); |
| } |
| |
| @Override |
| public Collection<Node> getOperands() { |
| return Collections.emptyList(); |
| } |
| } |