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author | vitalyisaev <vitalyisaev@ydb.tech> | 2023-11-30 13:26:22 +0300 |
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committer | vitalyisaev <vitalyisaev@ydb.tech> | 2023-11-30 15:44:45 +0300 |
commit | 0a98fece5a9b54f16afeb3a94b3eb3105e9c3962 (patch) | |
tree | 291d72dbd7e9865399f668c84d11ed86fb190bbf /contrib/libs/antlr4_cpp_runtime/src/atn/Transition.h | |
parent | cb2c8d75065e5b3c47094067cb4aa407d4813298 (diff) | |
download | ydb-0a98fece5a9b54f16afeb3a94b3eb3105e9c3962.tar.gz |
YQ Connector:Use docker-compose in integrational tests
Diffstat (limited to 'contrib/libs/antlr4_cpp_runtime/src/atn/Transition.h')
-rw-r--r-- | contrib/libs/antlr4_cpp_runtime/src/atn/Transition.h | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/contrib/libs/antlr4_cpp_runtime/src/atn/Transition.h b/contrib/libs/antlr4_cpp_runtime/src/atn/Transition.h new file mode 100644 index 0000000000..4c88d698ae --- /dev/null +++ b/contrib/libs/antlr4_cpp_runtime/src/atn/Transition.h @@ -0,0 +1,65 @@ +/* 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 |