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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 "atn/ATNType.h"
#include "atn/LexerATNSimulator.h"
#include "dfa/DFA.h"
#include "Exceptions.h"
#include "Vocabulary.h"
#include "LexerInterpreter.h"
using namespace antlr4;
LexerInterpreter::LexerInterpreter(const std::string &grammarFileName, const dfa::Vocabulary &vocabulary,
const std::vector<std::string> &ruleNames, const std::vector<std::string> &channelNames, const std::vector<std::string> &modeNames,
const atn::ATN &atn, CharStream *input)
: Lexer(input), _grammarFileName(grammarFileName), _atn(atn), _ruleNames(ruleNames),
_channelNames(channelNames), _modeNames(modeNames),
_vocabulary(vocabulary) {
if (_atn.grammarType != atn::ATNType::LEXER) {
throw IllegalArgumentException("The ATN must be a lexer ATN.");
}
for (size_t i = 0; i < atn.getNumberOfDecisions(); ++i) {
_decisionToDFA.push_back(dfa::DFA(_atn.getDecisionState(i), i));
}
_interpreter = new atn::LexerATNSimulator(this, _atn, _decisionToDFA, _sharedContextCache); /* mem-check: deleted in d-tor */
}
LexerInterpreter::~LexerInterpreter()
{
delete _interpreter;
}
const atn::ATN& LexerInterpreter::getATN() const {
return _atn;
}
std::string LexerInterpreter::getGrammarFileName() const {
return _grammarFileName;
}
const std::vector<std::string>& LexerInterpreter::getRuleNames() const {
return _ruleNames;
}
const std::vector<std::string>& LexerInterpreter::getChannelNames() const {
return _channelNames;
}
const std::vector<std::string>& LexerInterpreter::getModeNames() const {
return _modeNames;
}
const dfa::Vocabulary& LexerInterpreter::getVocabulary() const {
return _vocabulary;
}
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