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// Copyright 2012-2022 The ANTLR Project
//
// Redistribution and use in source and binary forms, with or without modification, are permitted
// provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this list of conditions
// and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice, this list of
// conditions and the following disclaimer in the documentation and/or other materials provided
// with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its contributors may be used to
// endorse or promote products derived from this software without specific prior written
// permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
// IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
// FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
// WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
// WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include "atn/PredictionContextCache.h"
using namespace antlr4::atn;
void PredictionContextCache::put(const Ref<const PredictionContext> &value) {
assert(value);
_data.insert(value);
}
Ref<const PredictionContext> PredictionContextCache::get(
const Ref<const PredictionContext> &value) const {
assert(value);
auto iterator = _data.find(value);
if (iterator == _data.end()) {
return nullptr;
}
return *iterator;
}
size_t PredictionContextCache::PredictionContextHasher::operator()(
const Ref<const PredictionContext> &predictionContext) const {
return predictionContext->hashCode();
}
bool PredictionContextCache::PredictionContextComparer::operator()(
const Ref<const PredictionContext> &lhs,
const Ref<const PredictionContext> &rhs) const {
return *lhs == *rhs;
}