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Diffstat (limited to 'antlr4-cpp-runtime-4.9.2-source/install/include/antlr4-runtime/atn/ArrayPredictionContext.h')
| -rw-r--r-- | antlr4-cpp-runtime-4.9.2-source/install/include/antlr4-runtime/atn/ArrayPredictionContext.h | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/antlr4-cpp-runtime-4.9.2-source/install/include/antlr4-runtime/atn/ArrayPredictionContext.h b/antlr4-cpp-runtime-4.9.2-source/install/include/antlr4-runtime/atn/ArrayPredictionContext.h new file mode 100644 index 0000000..53a5b17 --- /dev/null +++ b/antlr4-cpp-runtime-4.9.2-source/install/include/antlr4-runtime/atn/ArrayPredictionContext.h @@ -0,0 +1,43 @@ + +/* 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/PredictionContext.h" + +namespace antlr4 { +namespace atn { + + class SingletonPredictionContext; + + class ANTLR4CPP_PUBLIC ArrayPredictionContext : public PredictionContext { + public: + /// Parent can be empty only if full ctx mode and we make an array + /// from EMPTY and non-empty. We merge EMPTY by using null parent and + /// returnState == EMPTY_RETURN_STATE. + // Also here: we use a strong reference to our parents to avoid having them freed prematurely. + // See also SinglePredictionContext. + const std::vector<Ref<PredictionContext>> parents; + + /// Sorted for merge, no duplicates; if present, EMPTY_RETURN_STATE is always last. + const std::vector<size_t> returnStates; + + ArrayPredictionContext(Ref<SingletonPredictionContext> const& a); + ArrayPredictionContext(std::vector<Ref<PredictionContext>> const& parents_, std::vector<size_t> const& returnStates); + virtual ~ArrayPredictionContext(); + + virtual bool isEmpty() const override; + virtual size_t size() const override; + virtual Ref<PredictionContext> getParent(size_t index) const override; + virtual size_t getReturnState(size_t index) const override; + bool operator == (const PredictionContext &o) const override; + + virtual std::string toString() const override; + }; + +} // namespace atn +} // namespace antlr4 + |
