1 files changed, 57 insertions, 0 deletions
diff --git a/third_party/checker_framework_dataflow/java/org/checkerframework/dataflow/cfg/node/ShortLiteralNode.java b/third_party/checker_framework_dataflow/java/org/checkerframework/dataflow/cfg/node/ShortLiteralNode.java
new file mode 100644
index 0000000000..f61da82397
--- /dev/null
+++ b/third_party/checker_framework_dataflow/java/org/checkerframework/dataflow/cfg/node/ShortLiteralNode.java
@@ -0,0 +1,57 @@
+package org.checkerframework.dataflow.cfg.node;
+
+import java.util.Collection;
+import java.util.Collections;
+
+import com.sun.source.tree.LiteralTree;
+import com.sun.source.tree.Tree;
+
+/**
+ * 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();
+    }
+}