1 files changed, 72 insertions, 0 deletions
diff --git a/src/proof/proof_node.cpp b/src/proof/proof_node.cpp
new file mode 100644
index 000000000..e3affb306
--- /dev/null
+++ b/src/proof/proof_node.cpp
@@ -0,0 +1,72 @@
+/******************************************************************************
+ * Top contributors (to current version):
+ *   Andrew Reynolds
+ *
+ * This file is part of the cvc5 project.
+ *
+ * Copyright (c) 2009-2021 by the authors listed in the file AUTHORS
+ * in the top-level source directory and their institutional affiliations.
+ * All rights reserved.  See the file COPYING in the top-level source
+ * directory for licensing information.
+ * ****************************************************************************
+ *
+ * Implementation of proof node utility.
+ */
+
+#include "proof/proof_node.h"
+
+#include "proof/proof_node_algorithm.h"
+#include "proof/proof_node_to_sexpr.h"
+
+namespace cvc5 {
+
+ProofNode::ProofNode(PfRule id,
+                     const std::vector<std::shared_ptr<ProofNode>>& children,
+                     const std::vector<Node>& args)
+{
+  setValue(id, children, args);
+}
+
+PfRule ProofNode::getRule() const { return d_rule; }
+
+const std::vector<std::shared_ptr<ProofNode>>& ProofNode::getChildren() const
+{
+  return d_children;
+}
+
+const std::vector<Node>& ProofNode::getArguments() const { return d_args; }
+
+Node ProofNode::getResult() const { return d_proven; }
+
+bool ProofNode::isClosed()
+{
+  std::vector<Node> assumps;
+  expr::getFreeAssumptions(this, assumps);
+  return assumps.empty();
+}
+
+void ProofNode::setValue(
+    PfRule id,
+    const std::vector<std::shared_ptr<ProofNode>>& children,
+    const std::vector<Node>& args)
+{
+  d_rule = id;
+  d_children = children;
+  d_args = args;
+}
+
+void ProofNode::printDebug(std::ostream& os) const
+{
+  // convert to sexpr and print
+  ProofNodeToSExpr pnts;
+  Node ps = pnts.convertToSExpr(this);
+  os << ps;
+}
+
+std::ostream& operator<<(std::ostream& out, const ProofNode& pn)
+{
+  pn.printDebug(out);
+  return out;
+}
+
+}  // namespace cvc5