1 /* Copyright (c) 2012-2017 The ANTLR Project. All rights reserved.
2 * Use of this file is governed by the BSD 3-clause license that
3 * can be found in the LICENSE.txt file in the project root.
8 #include "atn/SingletonPredictionContext.h"
13 class ANTLR4CPP_PUBLIC EmptyPredictionContext : public SingletonPredictionContext {
15 EmptyPredictionContext();
17 virtual bool isEmpty() const override;
18 virtual size_t size() const override;
19 virtual Ref<PredictionContext> getParent(size_t index) const override;
20 virtual size_t getReturnState(size_t index) const override;
21 virtual std::string toString() const override;
23 virtual bool operator == (const PredictionContext &o) const override;