public void Compile()
{
if (compiled)
{
return;
}
tokenCreators = new Dictionary <int, Func <Token> >();
for (int i = 0; i < tokenTypes.Count; i++)
{
if (tokenTypes[i] != null)
{
tokenCreators[i] = CreatorActivator(tokenTypes[i]);
}
}
NFA nfa = NFA.Empty();
for (int i = 0; i < tokenTypes.Count; i++)
{
if (tokenTypes[i] == null)
{
continue;
}
IHasPattern token = (IHasPattern)tokenCreators[i]();
string pattern = token.Pattern;
if (pattern != null)
{
RegularExpression regex = new RegularExpression(pattern);
NFA automaton = regex.ToNfa();
automaton.Exit.Values = new[] { i };
nfa = NFA.Or(nfa, automaton);
}
}
dfa = nfa.ToDfa();
dfa.Minimize();
compiled = true;
}