36 lines
884 B
C++
36 lines
884 B
C++
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/* Copyright (c) 2012-2017 The ANTLR Project. All rights reserved.
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* Use of this file is governed by the BSD 3-clause license that
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* can be found in the LICENSE.txt file in the project root.
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*/
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#include "atn/EmptyPredictionContext.h"
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using namespace antlr4::atn;
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EmptyPredictionContext::EmptyPredictionContext() : SingletonPredictionContext(nullptr, EMPTY_RETURN_STATE) {
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}
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bool EmptyPredictionContext::isEmpty() const {
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return true;
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}
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size_t EmptyPredictionContext::size() const {
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return 1;
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}
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Ref<PredictionContext> EmptyPredictionContext::getParent(size_t /*index*/) const {
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return nullptr;
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}
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size_t EmptyPredictionContext::getReturnState(size_t /*index*/) const {
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return returnState;
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}
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bool EmptyPredictionContext::operator == (const PredictionContext &o) const {
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return this == &o;
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}
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std::string EmptyPredictionContext::toString() const {
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return "$";
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}
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