1 files changed, 49 insertions, 0 deletions
diff --git a/third_party/checker_framework_dataflow/java/org/checkerframework/dataflow/cfg/block/SingleSuccessorBlockImpl.java b/third_party/checker_framework_dataflow/java/org/checkerframework/dataflow/cfg/block/SingleSuccessorBlockImpl.java
new file mode 100644
index 0000000000..7e5988e2e7
--- /dev/null
+++ b/third_party/checker_framework_dataflow/java/org/checkerframework/dataflow/cfg/block/SingleSuccessorBlockImpl.java
@@ -0,0 +1,49 @@
+package org.checkerframework.dataflow.cfg.block;
+
+/*>>>
+import org.checkerframework.checker.nullness.qual.Nullable;
+*/
+
+import org.checkerframework.dataflow.analysis.Store;
+
+/**
+ * Implementation of a non-special basic block.
+ *
+ * @author Stefan Heule
+ *
+ */
+public abstract class SingleSuccessorBlockImpl extends BlockImpl implements
+        SingleSuccessorBlock {
+
+    /** Internal representation of the successor. */
+    protected /*@Nullable*/ BlockImpl successor;
+
+    /**
+     * The rule below say that EACH store at the end of a single
+     * successor block flow to the corresponding store of the successor.
+     */
+    protected Store.FlowRule flowRule = Store.FlowRule.EACH_TO_EACH;
+
+    @Override
+    public /*@Nullable*/ Block getSuccessor() {
+        return successor;
+    }
+
+    /**
+     * Set a basic block as the successor of this block.
+     */
+    public void setSuccessor(BlockImpl successor) {
+        this.successor = successor;
+        successor.addPredecessor(this);
+    }
+
+    @Override
+    public Store.FlowRule getFlowRule() {
+        return flowRule;
+    }
+
+    @Override
+    public void setFlowRule(Store.FlowRule rule) {
+        flowRule = rule;
+    }
+}