Added antlr4 to exported contribs into github.com/ydb-platform/ydb

4916444b182c044b7cd4c10f838a37a252ea36cf

1 files changed, 42 insertions, 0 deletions

diff --git a/contrib/libs/antlr4_cpp_runtime/src/atn/EpsilonTransition.h b/contrib/libs/antlr4_cpp_runtime/src/atn/EpsilonTransition.h
new file mode 100644
index 0000000000..21bc812822
--- /dev/null
+++ b/contrib/libs/antlr4_cpp_runtime/src/atn/EpsilonTransition.h
@@ -0,0 +1,42 @@
+/* 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 "atn/Transition.h"
+
+namespace antlr4 {
+namespace atn {
+
+  class ANTLR4CPP_PUBLIC EpsilonTransition final : public Transition {
+  public:
+    static bool is(const Transition &transition) { return transition.getTransitionType() == TransitionType::EPSILON; }
+
+    static bool is(const Transition *transition) { return transition != nullptr && is(*transition); }
+
+    explicit EpsilonTransition(ATNState *target);
+    EpsilonTransition(ATNState *target, size_t outermostPrecedenceReturn);
+
+    /**
+     * @return the rule index of a precedence rule for which this transition is
+     * returning from, where the precedence value is 0; otherwise, INVALID_INDEX.
+     *
+     * @see ATNConfig#isPrecedenceFilterSuppressed()
+     * @see ParserATNSimulator#applyPrecedenceFilter(ATNConfigSet)
+     * @since 4.4.1
+     */
+    size_t outermostPrecedenceReturn() const;
+
+    virtual bool isEpsilon() const override;
+    virtual bool matches(size_t symbol, size_t minVocabSymbol, size_t maxVocabSymbol) const override;
+
+    virtual std::string toString() const override;
+
+  private:
+    const size_t _outermostPrecedenceReturn; // A rule index.
+  };
+
+} // namespace atn
+} // namespace antlr4