Adds the source of the checker framework

This needs to predate the rest of the changes to the checker framework to keep the build green.

Also add the source of javacutil part of the checker framework, that will be included in the next change.

Change-Id: Ie18d0e8e21035ce5141416e552a83d893f71b88b

1 files changed, 87 insertions, 0 deletions

diff --git a/third_party/checker_framework_dataflow/java/org/checkerframework/dataflow/cfg/block/ConditionalBlockImpl.java b/third_party/checker_framework_dataflow/java/org/checkerframework/dataflow/cfg/block/ConditionalBlockImpl.java
new file mode 100644
index 0000000000..15c3842bad
--- /dev/null
+++ b/third_party/checker_framework_dataflow/java/org/checkerframework/dataflow/cfg/block/ConditionalBlockImpl.java
@@ -0,0 +1,87 @@
+package org.checkerframework.dataflow.cfg.block;
+
+import org.checkerframework.dataflow.analysis.Store;
+
+/**
+ * Implementation of a conditional basic block.
+ *
+ * @author Stefan Heule
+ *
+ */
+public class ConditionalBlockImpl extends BlockImpl implements ConditionalBlock {
+
+    /** Successor of the then branch. */
+    protected BlockImpl thenSuccessor;
+
+    /** Successor of the else branch. */
+    protected BlockImpl elseSuccessor;
+
+    /**
+     * The rules below say that the THEN store before a conditional
+     * block flows to BOTH of the stores of the then successor, while
+     * the ELSE store before a conditional block flows to BOTH of the
+     * stores of the else successor.
+     */
+    protected Store.FlowRule thenFlowRule = Store.FlowRule.THEN_TO_BOTH;
+
+    protected Store.FlowRule elseFlowRule = Store.FlowRule.ELSE_TO_BOTH;
+
+    /**
+     * Initialize an empty conditional basic block to be filled with contents
+     * and linked to other basic blocks later.
+     */
+    public ConditionalBlockImpl() {
+        type = BlockType.CONDITIONAL_BLOCK;
+    }
+
+    /**
+     * Set the then branch successor.
+     */
+    public void setThenSuccessor(BlockImpl b) {
+        thenSuccessor = b;
+        b.addPredecessor(this);
+    }
+
+    /**
+     * Set the else branch successor.
+     */
+    public void setElseSuccessor(BlockImpl b) {
+        elseSuccessor = b;
+        b.addPredecessor(this);
+    }
+
+    @Override
+    public Block getThenSuccessor() {
+        return thenSuccessor;
+    }
+
+    @Override
+    public Block getElseSuccessor() {
+        return elseSuccessor;
+    }
+
+    @Override
+    public Store.FlowRule getThenFlowRule() {
+        return thenFlowRule;
+    }
+
+    @Override
+    public Store.FlowRule getElseFlowRule() {
+        return elseFlowRule;
+    }
+
+    @Override
+    public void setThenFlowRule(Store.FlowRule rule) {
+        thenFlowRule = rule;
+    }
+
+    @Override
+    public void setElseFlowRule(Store.FlowRule rule) {
+        elseFlowRule = rule;
+    }
+
+    @Override
+    public String toString() {
+        return "ConditionalBlock()";
+    }
+}