public LexicalAnalyzer()
{
TableToken.ClearTable();
TableSymbol.ClearTable();
TableSymbol.AddSymbol(new Symbol {
Id = 1, Name = "algoritmo"
});
TableSymbol.AddSymbol(new Symbol {
Id = 2, Name = "var"
});
TableSymbol.AddSymbol(new Symbol {
Id = 3, Name = "inicio"
});
TableSymbol.AddSymbol(new Symbol {
Id = 4, Name = "fimalgoritmo"
});
TableSymbol.AddSymbol(new Symbol {
Id = 5, Name = "inteiro"
});
TableSymbol.AddSymbol(new Symbol {
Id = 6, Name = "real"
});
TableSymbol.AddSymbol(new Symbol {
Id = 7, Name = "caractere"
});
TableSymbol.AddSymbol(new Symbol {
Id = 8, Name = "logico"
});
TableSymbol.AddSymbol(new Symbol {
Id = 9, Name = "vetor"
});
TableSymbol.AddSymbol(new Symbol {
Id = 10, Name = "escreval"
});
TableSymbol.AddSymbol(new Symbol {
Id = 11, Name = "leia"
});
TableSymbol.AddSymbol(new Symbol {
Id = 12, Name = "para"
});
TableSymbol.AddSymbol(new Symbol {
Id = 13, Name = "de"
});
TableSymbol.AddSymbol(new Symbol {
Id = 14, Name = "ate"
});
TableSymbol.AddSymbol(new Symbol {
Id = 15, Name = "faca"
});
TableSymbol.AddSymbol(new Symbol {
Id = 16, Name = "fimpara"
});
TableSymbol.AddSymbol(new Symbol {
Id = 17, Name = "se"
});
TableSymbol.AddSymbol(new Symbol {
Id = 18, Name = "senao"
});
TableSymbol.AddSymbol(new Symbol {
Id = 19, Name = "fimse"
});
TableSymbol.AddSymbol(new Symbol {
Id = 19, Name = "entao"
});
}
public void AnalyzeCode(string code)
{
code = code.ToLower();
StringBuilder str = new StringBuilder();
int estate = 0;
Symbol symbol;
bool literal = false;
for (int i = 0; i < code.Length; i++)
{
while (estate != -1)
{
if (i >= code.Length)
{
break;
}
if (char.IsDigit(code[i]))
{
estate = TransitionTable[estate, GetKeywordColumn('d')];
}
else if (char.IsLetter(code[i]))
{
estate = TransitionTable[estate, GetKeywordColumn('l')];
}
else if (char.IsWhiteSpace(code[i]) && literal == false)
{
break;
}
else if (!char.IsLetterOrDigit(code[i]))
{
if (!char.IsWhiteSpace(code[i]))
{
estate = TransitionTable[estate, GetKeywordColumn(code[i])];
if (code[i] == '\"')
{
if (literal == false)
{
literal = true;
}
else
{
literal = false;
}
}
}
if (literal == false && code[i] != '\"')
{
break;
}
}
if (estate == -1)
{
break;
}
str.Append(code[i]);
i++;
}
double num;
if (!string.IsNullOrWhiteSpace(str.ToString()))
{
symbol = new Symbol()
{
Id = TableSymbol.Table.Count + 1, Name = str.ToString()
};
if (!TableSymbol.ContainsSymbol(symbol))
{
TableSymbol.AddSymbol(symbol);
}
if (reservedWords.Contains(symbol.Name))
{
TableToken.AddToken(new Token()
{
Id = TableSymbol.GetSymbolId(symbol), Name = symbol.Name, Type = TypeToken.PALAVRA_RESERVADA
});
}
else if (separators.Contains(symbol.Name))
{
TableToken.AddToken(new Token()
{
Id = TableSymbol.GetSymbolId(symbol), Name = symbol.Name, Type = TypeToken.SEPARADOR
});
}
else if (operators.Contains(symbol.Name))
{
TableToken.AddToken(new Token()
{
Id = TableSymbol.GetSymbolId(symbol), Name = symbol.Name, Type = TypeToken.OPERADOR
});
}
else if (symbol.Name.StartsWith("\\"))
{
TableToken.AddToken(new Token()
{
Id = TableSymbol.GetSymbolId(symbol), Name = symbol.Name, Type = TypeToken.COMENTARIO
});
}
else if (symbol.Name.StartsWith("\"") && symbol.Name.EndsWith("\""))
{
TableToken.AddToken(new Token()
{
Id = TableSymbol.GetSymbolId(symbol), Name = symbol.Name, Type = TypeToken.LITERAL
});
}
else if (double.TryParse(symbol.Name, out num))
{
TableToken.AddToken(new Token()
{
Id = TableSymbol.GetSymbolId(symbol), Name = symbol.Name, Type = TypeToken.NUMERO
});
}
else
{
TableToken.AddToken(new Token()
{
Id = TableSymbol.GetSymbolId(symbol), Name = symbol.Name, Type = TypeToken.IDENTIFICADOR
});
}
}
str = new StringBuilder();
estate = 0;
}
}
