44 lines
1.5 KiB
C
44 lines
1.5 KiB
C
|
|
|||
|
|
/* 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
|
|||
|
|
|