/
githubmirror
/
nbs
Обзор
Документация
Войти
/
githubmirror
/
nbs
Код
Запросы
0
Пакеты
0
Релизы
0
Аналитика
Безопасность
main
contrib/libs/antlr4_cpp_runtime/src/atn/PredicateTransition.h
50 строк
2 KB
Anton Myagkov
Update ydb version to 24.4 (#4579)
07 фев 2026, 11:59
Не верифицирован
07 фев 2026, 11:59
2c21cae
Код
Авторство
О чём код?
/* 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" #include "atn/SemanticContext.h" namespace antlr4 { namespace atn { /// TODO: this is old comment: /// A tree of semantic predicates from the grammar AST if label==SEMPRED. /// In the ATN, labels will always be exactly one predicate, but the DFA /// may have to combine a bunch of them as it collects predicates from /// multiple ATN configurations into a single DFA state. class ANTLR4CPP_PUBLIC PredicateTransition final : public Transition { public: static bool is(const Transition &transition) { return transition.getTransitionType() == TransitionType::PREDICATE; } static bool is(const Transition *transition) { return transition != nullptr && is(*transition); } PredicateTransition(ATNState *target, size_t ruleIndex, size_t predIndex, bool isCtxDependent); size_t getRuleIndex() const { return _predicate->ruleIndex; } size_t getPredIndex() const { return _predicate->predIndex; } bool isCtxDependent() const { return _predicate->isCtxDependent; } bool isEpsilon() const override; bool matches(size_t symbol, size_t minVocabSymbol, size_t maxVocabSymbol) const override; std::string toString() const override; const Ref<const SemanticContext::Predicate>& getPredicate() const { return _predicate; } private: const std::shared_ptr<const SemanticContext::Predicate> _predicate; }; } // namespace atn } // namespace antlr4