public int GetTokenIndex(int lexerState)
{
if (m_scannerInfo == null)
{
throw new InvalidOperationException("This lexeme is not initialized");
}
return(m_scannerInfo.GetTokenIndex(m_stateIndex, lexerState));
}
public void LexerStateToDFATest()
{
Lexicon lexicon = new Lexicon();
LexerState global = lexicon.DefaultLexer;
LexerState keywords = global.CreateSubState();
LexerState xml = keywords.CreateSubState();
var ID = global.DefineToken(RE.Range('a', 'z').Concat(
(RE.Range('a', 'z') | RE.Range('0', '9')).Many()));
var NUM = global.DefineToken(RE.Range('0', '9').Many1());
var ERROR = global.DefineToken(RE.Range(Char.MinValue, (char)255));
var IF = keywords.DefineToken(RE.Literal("if"));
var ELSE = keywords.DefineToken(RE.Literal("else"));
var XMLNS = xml.DefineToken(RE.Literal("xmlns"));
DFAModel dfa = DFAModel.Create(lexicon);
CompressedTransitionTable tc = CompressedTransitionTable.Compress(dfa);
ScannerInfo si = lexicon.CreateScannerInfo();
FiniteAutomationEngine engine = new FiniteAutomationEngine(si.TransitionTable, si.CharClassTable);
engine.InputString("if");
Assert.AreEqual(ID.Index, si.GetTokenIndex(engine.CurrentState));
engine.Reset();
engine.InputString("12345");
Assert.AreEqual(NUM.Index, si.GetTokenIndex(engine.CurrentState));
engine.Reset();
engine.InputString("asdf12dd");
Assert.AreEqual(ID.Index, si.GetTokenIndex(engine.CurrentState));
engine.Reset();
engine.InputString("A");
Assert.AreEqual(ERROR.Index, si.GetTokenIndex(engine.CurrentState));
engine.Reset();
engine.InputString("AAA");
Assert.IsTrue(engine.IsAtStoppedState);
engine.Reset();
engine.InputString("if ");
Assert.IsTrue(engine.IsAtStoppedState);
engine.Reset();
si.LexerStateIndex = keywords.Index;
engine.InputString("if");
Assert.AreEqual(IF.Index, si.GetTokenIndex(engine.CurrentState));
engine.Reset();
engine.InputString("else");
Assert.AreEqual(ELSE.Index, si.GetTokenIndex(engine.CurrentState));
engine.Reset();
engine.InputString("xmlns");
Assert.AreEqual(ID.Index, si.GetTokenIndex(engine.CurrentState));
engine.Reset();
si.LexerStateIndex = xml.Index;
engine.InputString("if");
Assert.AreEqual(IF.Index, si.GetTokenIndex(engine.CurrentState));
engine.Reset();
engine.InputString("xml");
Assert.IsFalse(engine.IsAtStoppedState);
engine.Reset();
engine.InputString("xmlns");
Assert.AreEqual(XMLNS.Index, si.GetTokenIndex(engine.CurrentState));
;
}