Initial commit from sysy-main

antlr/antlr4-runtime-4.13.2/runtime/src/LexerInterpreter.cpp

@@ -0,0 +1,60 @@
+/* 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;
+}