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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/ProfilingATNSimulator.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/ProfilingATNSimulator.h')
-rw-r--r-- | contrib/libs/antlr4_cpp_runtime/src/atn/ProfilingATNSimulator.h | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/contrib/libs/antlr4_cpp_runtime/src/atn/ProfilingATNSimulator.h b/contrib/libs/antlr4_cpp_runtime/src/atn/ProfilingATNSimulator.h new file mode 100644 index 0000000000..551efb8556 --- /dev/null +++ b/contrib/libs/antlr4_cpp_runtime/src/atn/ProfilingATNSimulator.h @@ -0,0 +1,60 @@ +/* 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/ParserATNSimulator.h" +#include "atn/DecisionInfo.h" + +namespace antlr4 { +namespace atn { + + class ANTLR4CPP_PUBLIC ProfilingATNSimulator : public ParserATNSimulator { + public: + explicit ProfilingATNSimulator(Parser *parser); + + virtual size_t adaptivePredict(TokenStream *input, size_t decision, ParserRuleContext *outerContext) override; + + virtual std::vector<DecisionInfo> getDecisionInfo() const; + virtual dfa::DFAState* getCurrentState() const; + + protected: + std::vector<DecisionInfo> _decisions; + + int _sllStopIndex = 0; + int _llStopIndex = 0; + + size_t _currentDecision = 0; + dfa::DFAState *_currentState; + + /// <summary> + /// At the point of LL failover, we record how SLL would resolve the conflict so that + /// we can determine whether or not a decision / input pair is context-sensitive. + /// If LL gives a different result than SLL's predicted alternative, we have a + /// context sensitivity for sure. The converse is not necessarily true, however. + /// It's possible that after conflict resolution chooses minimum alternatives, + /// SLL could get the same answer as LL. Regardless of whether or not the result indicates + /// an ambiguity, it is not treated as a context sensitivity because LL prediction + /// was not required in order to produce a correct prediction for this decision and input sequence. + /// It may in fact still be a context sensitivity but we don't know by looking at the + /// minimum alternatives for the current input. + /// </summary> + size_t conflictingAltResolvedBySLL = 0; + + virtual dfa::DFAState* getExistingTargetState(dfa::DFAState *previousD, size_t t) override; + virtual dfa::DFAState* computeTargetState(dfa::DFA &dfa, dfa::DFAState *previousD, size_t t) override; + virtual std::unique_ptr<ATNConfigSet> computeReachSet(ATNConfigSet *closure, size_t t, bool fullCtx) override; + virtual bool evalSemanticContext(Ref<const SemanticContext> const& pred, ParserRuleContext *parserCallStack, + size_t alt, bool fullCtx) override; + virtual void reportAttemptingFullContext(dfa::DFA &dfa, const antlrcpp::BitSet &conflictingAlts, ATNConfigSet *configs, + size_t startIndex, size_t stopIndex) override; + virtual void reportContextSensitivity(dfa::DFA &dfa, size_t prediction, ATNConfigSet *configs, + size_t startIndex, size_t stopIndex) override; + virtual void reportAmbiguity(dfa::DFA &dfa, dfa::DFAState *D, size_t startIndex, size_t stopIndex, bool exact, + const antlrcpp::BitSet &ambigAlts, ATNConfigSet *configs) override; + }; + +} // namespace atn +} // namespace antlr4 |