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/* 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.
*/
#include "misc/MurmurHash.h"
#include "atn/DecisionState.h"
#include "atn/PredictionContext.h"
#include "SemanticContext.h"
#include "atn/LexerActionExecutor.h"
#include "support/CPPUtils.h"
#include "support/Casts.h"
#include "atn/LexerATNConfig.h"
using namespace antlr4::atn;
using namespace antlrcpp;
LexerATNConfig::LexerATNConfig(ATNState *state, int alt, Ref<const PredictionContext> context)
: ATNConfig(state, alt, std::move(context)) {}
LexerATNConfig::LexerATNConfig(ATNState *state, int alt, Ref<const PredictionContext> context, Ref<const LexerActionExecutor> lexerActionExecutor)
: ATNConfig(state, alt, std::move(context)), _lexerActionExecutor(std::move(lexerActionExecutor)) {}
LexerATNConfig::LexerATNConfig(LexerATNConfig const& other, ATNState *state)
: ATNConfig(other, state), _lexerActionExecutor(other._lexerActionExecutor), _passedThroughNonGreedyDecision(checkNonGreedyDecision(other, state)) {}
LexerATNConfig::LexerATNConfig(LexerATNConfig const& other, ATNState *state, Ref<const LexerActionExecutor> lexerActionExecutor)
: ATNConfig(other, state), _lexerActionExecutor(std::move(lexerActionExecutor)), _passedThroughNonGreedyDecision(checkNonGreedyDecision(other, state)) {}
LexerATNConfig::LexerATNConfig(LexerATNConfig const& other, ATNState *state, Ref<const PredictionContext> context)
: ATNConfig(other, state, std::move(context)), _lexerActionExecutor(other._lexerActionExecutor), _passedThroughNonGreedyDecision(checkNonGreedyDecision(other, state)) {}
size_t LexerATNConfig::hashCode() const {
size_t hashCode = misc::MurmurHash::initialize(7);
hashCode = misc::MurmurHash::update(hashCode, state->stateNumber);
hashCode = misc::MurmurHash::update(hashCode, alt);
hashCode = misc::MurmurHash::update(hashCode, context);
hashCode = misc::MurmurHash::update(hashCode, semanticContext);
hashCode = misc::MurmurHash::update(hashCode, _passedThroughNonGreedyDecision ? 1 : 0);
hashCode = misc::MurmurHash::update(hashCode, _lexerActionExecutor);
hashCode = misc::MurmurHash::finish(hashCode, 6);
return hashCode;
}
bool LexerATNConfig::operator==(const LexerATNConfig& other) const
{
if (this == &other)
return true;
if (_passedThroughNonGreedyDecision != other._passedThroughNonGreedyDecision)
return false;
if (_lexerActionExecutor == nullptr)
return other._lexerActionExecutor == nullptr;
if (*_lexerActionExecutor != *(other._lexerActionExecutor)) {
return false;
}
return ATNConfig::operator==(other);
}
bool LexerATNConfig::checkNonGreedyDecision(LexerATNConfig const& source, ATNState *target) {
return source._passedThroughNonGreedyDecision ||
(DecisionState::is(target) && downCast<DecisionState*>(target)->nonGreedy);
}
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