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Diffstat (limited to 'antlr4-cpp-runtime-4.9.2-source/install/include/antlr4-runtime/atn/ContextSensitivityInfo.h')
| -rw-r--r-- | antlr4-cpp-runtime-4.9.2-source/install/include/antlr4-runtime/atn/ContextSensitivityInfo.h | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/antlr4-cpp-runtime-4.9.2-source/install/include/antlr4-runtime/atn/ContextSensitivityInfo.h b/antlr4-cpp-runtime-4.9.2-source/install/include/antlr4-runtime/atn/ContextSensitivityInfo.h new file mode 100644 index 0000000..430ce3b --- /dev/null +++ b/antlr4-cpp-runtime-4.9.2-source/install/include/antlr4-runtime/atn/ContextSensitivityInfo.h @@ -0,0 +1,47 @@ +/* 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/DecisionEventInfo.h" + +namespace antlr4 { +namespace atn { + + /// <summary> + /// This class represents profiling event information for a context sensitivity. + /// Context sensitivities are decisions where a particular input resulted in an + /// SLL conflict, but LL prediction produced a single unique alternative. + /// + /// <para> + /// In some cases, the unique alternative identified by LL prediction is not + /// equal to the minimum represented alternative in the conflicting SLL + /// configuration set. Grammars and inputs which result in this scenario are + /// unable to use <seealso cref="PredictionMode#SLL"/>, which in turn means they cannot use + /// the two-stage parsing strategy to improve parsing performance for that + /// input.</para> + /// </summary> + /// <seealso cref= ParserATNSimulator#reportContextSensitivity </seealso> + /// <seealso cref= ANTLRErrorListener#reportContextSensitivity + /// + /// @since 4.3 </seealso> + class ANTLR4CPP_PUBLIC ContextSensitivityInfo : public DecisionEventInfo { + public: + /// <summary> + /// Constructs a new instance of the <seealso cref="ContextSensitivityInfo"/> class + /// with the specified detailed context sensitivity information. + /// </summary> + /// <param name="decision"> The decision number </param> + /// <param name="configs"> The final configuration set containing the unique + /// alternative identified by full-context prediction </param> + /// <param name="input"> The input token stream </param> + /// <param name="startIndex"> The start index for the current prediction </param> + /// <param name="stopIndex"> The index at which the context sensitivity was + /// identified during full-context prediction </param> + ContextSensitivityInfo(size_t decision, ATNConfigSet *configs, TokenStream *input, size_t startIndex, size_t stopIndex); + }; + +} // namespace atn +} // namespace antlr4 |
