public AscendentDealer(GrammarDeterministicAutomata afd)
{
_afd = afd;
//Para a geração dos firsts e follows
_nonRecursiveDealer = new NonRecursiveDealer();
_finalStatesList = new List <GrammarState>();
_table = new SyntaxTable();
_productions = new List <String>();
//Numera todas as produções
NumerateProductions();
//Método que gera a tabela
GenerateTable();
}
private bool NonRecursiveAnalizer(ref string feedback)
{
NonRecursiveDealer dealer = new NonRecursiveDealer();
SimpleStack <Symbol> analizerStack = new SimpleStack <Symbol>();
analizerStack.Push(Terminal.Initial);
analizerStack.Push(NonTerminal.InitialSymbol);
//Empilha código
Token token = null;
bool nextToken = true;
bool errorFound = false;
if (Lexic.ListToken != null && Lexic.ListToken.Count > 0)
{
//Quando um token é removido da pilha, o seu valor fica null
while (analizerStack.Size > 0 && !errorFound)
{
if (nextToken)
{
token = Lexic.NextToken();
if (token != null)
{
while (token.Type == TokenType.LINE_BREAK)
{
line++;
token = Lexic.NextToken();
}
}
nextToken = false;
}
Symbol symbol = analizerStack.Pop();
if (symbol is NonTerminal)
{
NonTerminal nonTerminal = (NonTerminal)symbol;
List <Symbol> list = nonTerminal.GetRuleForToken(token);
if (list != null && list.Count != 0)
{
//Coloca os elementos da lista na ordem
for (int i = list.Count - 1; i >= 0; i--)
{
analizerStack.Push(list[i]);
}
}
else
{
if (!nonTerminal.ContainsEmpty())
{
feedback += INCOMPLETE_TENSE_MISS + nonTerminal.Value + ", linha " + line + "\r\n";
errorFound = true;
}
else if ((nonTerminal.Equals(NonTerminal.InitialSymbol)) && (token != null))
{
feedback += INSTRUCTION_INVALID + token.Value + ", linha " + line + "\r\n";
errorFound = true;
}
}
}
else
{
if (symbol.Value != "$")
{
Terminal terminal = (Terminal)symbol;
if (terminal != null)
{
if (token == null)
{
feedback += INCOMPLETE_TENSE_MISS + terminal.Value + ", linha " + line + "\r\n";
errorFound = true;
}
else
{
if (terminal.EquivalentToToken(token))
{
//Seta a variável para buscar o próximo token
nextToken = true;
}
else
{
feedback += INCOMPLETE_TENSE_MISS + terminal.Value + ", linha " + line + "\r\n";
errorFound = true;
}
}
}
}
}
}
token = Lexic.NextToken();
if ((token != null) && (token.Type != TokenType.LINE_BREAK) && (!errorFound))
{
feedback += INSTRUCTION_INVALID + token.Value + ", linha " + line + "\r\n";
errorFound = true;
}
}
return(!errorFound);
}