1 files changed, 37 insertions, 0 deletions
diff --git a/third_party/checker_framework_dataflow/java/org/checkerframework/dataflow/cfg/block/Block.java b/third_party/checker_framework_dataflow/java/org/checkerframework/dataflow/cfg/block/Block.java
new file mode 100644
index 0000000000..09aa2d4180
--- /dev/null
+++ b/third_party/checker_framework_dataflow/java/org/checkerframework/dataflow/cfg/block/Block.java
@@ -0,0 +1,37 @@
+package org.checkerframework.dataflow.cfg.block;
+
+/**
+ * Represents a basic block in a control flow graph.
+ *
+ * @author Stefan Heule
+ *
+ */
+public interface Block {
+
+    /** The types of basic blocks */
+    public static enum BlockType {
+
+        /** A regular basic block. */
+        REGULAR_BLOCK,
+
+        /** A conditional basic block. */
+        CONDITIONAL_BLOCK,
+
+        /** A special basic block. */
+        SPECIAL_BLOCK,
+
+        /** A basic block that can throw an exception. */
+        EXCEPTION_BLOCK,
+    }
+
+    /**
+     * @return the type of this basic block
+     */
+    BlockType getType();
+
+    /**
+     * @return the unique identifier of this block
+     */
+    long getId();
+
+}