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