public IRuleBuilder Rule(params object[] symbols)
{
var symbolList = new List<ISymbol>();
if (symbols != null)
{
foreach (var symbol in symbols)
{
if (symbol is char)
{
var terminal = new Terminal((char)symbol);
var lexerRule = new TerminalLexerRule(
terminal,
new TokenType(terminal.ToString()));
symbolList.Add(lexerRule);
}
else if (symbol is ITerminal)
{
var terminal = symbol as ITerminal;
var lexerRule = new TerminalLexerRule(
terminal,
new TokenType(terminal.ToString()));
symbolList.Add(lexerRule);
}
else if (symbol is ILexerRule)
{
symbolList.Add(symbol as ILexerRule);
}
else if (symbol is string)
{
var nonTerminal = new NonTerminal(symbol as string);
symbolList.Add(nonTerminal);
}
else if (symbol == null)
{ }
else { throw new ArgumentException("unrecognized terminal or nonterminal"); }
}
}
_rules.Add(symbolList);
return this;
}
private static ILexerRule CreateNotDoubleQuoteLexerRule()
{
// ( [^"\\] | (\\ .) ) +
var start = new DfaState();
var escape = new DfaState();
var final = new DfaState(true);
var notQuoteTerminal = new NegationTerminal(
new SetTerminal('"', '\\'));
var escapeTerminal = new Terminal('\\');
var anyTerminal = new AnyTerminal();
var notQuoteEdge = new DfaEdge(notQuoteTerminal, final);
start.AddEdge(notQuoteEdge);
final.AddEdge(notQuoteEdge);
var escapeEdge = new DfaEdge(escapeTerminal, escape);
start.AddEdge(escapeEdge);
final.AddEdge(escapeEdge);
var anyEdge = new DfaEdge(anyTerminal, final);
escape.AddEdge(anyEdge);
return new DfaLexerRule(start, new TokenType("not-double-quote"));
}
public IRuleBuilder Rule1(params object[] symbols)
{
var symbolList = new List<ISymbol>();
var terminalNeighborList = new List<ITerminal>();
if (symbols.IsNullOrEmpty())
return this;
foreach (var symbol in symbols)
{
var flushTerminals = false;
if (symbol is INonTerminal)
{
flushTerminals = true;
symbolList.Add(symbol as INonTerminal);
}
else if (symbol is string)
{
flushTerminals = true;
var nonTerminal = new NonTerminal(symbol as string);
symbolList.Add(nonTerminal);
}
else if (symbol is char)
{
var terminal = new Terminal((char)symbol);
terminalNeighborList.Add(terminal);
}
else if (symbol is ITerminal)
{
terminalNeighborList.Add(symbol as ITerminal);
}
else if (symbol is ILexerRule)
{
flushTerminals = true;
symbolList.Add(symbol as ILexerRule);
}
else if (symbol == null)
{ }
else { throw new ArgumentException("unrecognized terminal or nonterminal"); }
if (flushTerminals)
{
var grammarLexerRule = CreateGrammarLexerRule(terminalNeighborList);
symbolList.Add(grammarLexerRule);
terminalNeighborList.Clear();
}
}
if (terminalNeighborList.Count > 0)
{
var grammarLexerRule = CreateGrammarLexerRule(terminalNeighborList);
symbolList.Add(grammarLexerRule);
terminalNeighborList.Clear();
}
_rules.Add(symbolList);
return this;
}