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authorvitalyisaev <vitalyisaev@ydb.tech>2023-11-30 13:26:22 +0300
committervitalyisaev <vitalyisaev@ydb.tech>2023-11-30 15:44:45 +0300
commit0a98fece5a9b54f16afeb3a94b3eb3105e9c3962 (patch)
tree291d72dbd7e9865399f668c84d11ed86fb190bbf /contrib/libs/antlr4_cpp_runtime/src/atn/Transition.h
parentcb2c8d75065e5b3c47094067cb4aa407d4813298 (diff)
downloadydb-0a98fece5a9b54f16afeb3a94b3eb3105e9c3962.tar.gz
YQ Connector:Use docker-compose in integrational tests
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+/* 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 "misc/IntervalSet.h"
+#include "atn/TransitionType.h"
+
+namespace antlr4 {
+namespace atn {
+
+ /// <summary>
+ /// An ATN transition between any two ATN states. Subclasses define
+ /// atom, set, epsilon, action, predicate, rule transitions.
+ /// <p/>
+ /// This is a one way link. It emanates from a state (usually via a list of
+ /// transitions) and has a target state.
+ /// <p/>
+ /// Since we never have to change the ATN transitions once we construct it,
+ /// we can fix these transitions as specific classes. The DFA transitions
+ /// on the other hand need to update the labels as it adds transitions to
+ /// the states. We'll use the term Edge for the DFA to distinguish them from
+ /// ATN transitions.
+ /// </summary>
+ class ANTLR4CPP_PUBLIC Transition {
+ public:
+ /// The target of this transition.
+ // ml: this is a reference into the ATN.
+ ATNState *target;
+
+ virtual ~Transition() = default;
+
+ TransitionType getTransitionType() const { return _transitionType; }
+
+ /**
+ * Determines if the transition is an "epsilon" transition.
+ *
+ * <p>The default implementation returns {@code false}.</p>
+ *
+ * @return {@code true} if traversing this transition in the ATN does not
+ * consume an input symbol; otherwise, {@code false} if traversing this
+ * transition consumes (matches) an input symbol.
+ */
+ virtual bool isEpsilon() const;
+ virtual misc::IntervalSet label() const;
+ virtual bool matches(size_t symbol, size_t minVocabSymbol, size_t maxVocabSymbol) const = 0;
+
+ virtual std::string toString() const;
+
+ Transition(Transition const&) = delete;
+ Transition& operator=(Transition const&) = delete;
+
+ protected:
+ Transition(TransitionType transitionType, ATNState *target);
+
+ private:
+ const TransitionType _transitionType;
+ };
+
+ using ConstTransitionPtr = std::unique_ptr<const Transition>;
+
+} // namespace atn
+} // namespace antlr4