Intermediate changes

1 files changed, 32 insertions, 0 deletions

diff --git a/contrib/libs/antlr4_cpp_runtime/src/dfa/DFASerializer.h b/contrib/libs/antlr4_cpp_runtime/src/dfa/DFASerializer.h
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index 00000000000..b541714078f
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+++ b/contrib/libs/antlr4_cpp_runtime/src/dfa/DFASerializer.h
@@ -0,0 +1,32 @@
+/* Copyright (c) 2012-2017 The ANTLR Project. All rights reserved.
+ * Use of this file is governed by the BSD 3-clause license that
+ * can be found in the LICENSE.txt file in the project root.
+ */
+
+#pragma once
+
+#include "Vocabulary.h"
+
+namespace antlr4 {
+namespace dfa {
+
+  /// A DFA walker that knows how to dump them to serialized strings.
+  class ANTLR4CPP_PUBLIC DFASerializer {
+  public:
+    DFASerializer(const DFA *dfa, const Vocabulary &vocabulary);
+
+    virtual ~DFASerializer() = default;
+
+    std::string toString() const;
+
+  protected:
+    virtual std::string getEdgeLabel(size_t i) const;
+    std::string getStateString(DFAState *s) const;
+
+  private:
+    const DFA *_dfa;
+    const Vocabulary &_vocabulary;
+  };
+
+} // namespace atn
+} // namespace antlr4