Expresiones LIT()
{
switch (currentToken.Tipo)
{
case TipoToken.TK_INT_LIT:
LiteralEntero asd = new LiteralEntero(int.Parse(currentToken.Lexema));
currentToken = lex.NextToken();
return asd;
case TipoToken.TK_FLOAT_LIT:
LiteralFlotante flo = new LiteralFlotante(float.Parse(currentToken.Lexema));
currentToken = lex.NextToken();
return flo;
case TipoToken.TK_CHAR_LIT:
string car = currentToken.Lexema;
currentToken = lex.NextToken();
return new LitChar(car);
case TipoToken.TK_STRING_LIT:
string cad = currentToken.Lexema;
currentToken = lex.NextToken();
return new LitString(cad);
case TipoToken.TK_TRUE:
currentToken = lex.NextToken();
return new LitBool(true);
case TipoToken.TK_FALSE:
currentToken = lex.NextToken();
return new LitBool(false);
default:
throw new Exception("Se esperaba una literal");
}
}
public Expresiones Parexp()
{
try
{
if (currentToken.Tipo == Lexico.TipoToken.TK_INT_LIT)
{
LiteralEntero lit = new LiteralEntero(Convert.ToInt32(currentToken.Lexema));
currentToken = lex.NextToken();
return lit;
}
else if (currentToken.Tipo == Lexico.TipoToken.TK_FLOAT_LIT)
{
LiteralFlotante lit = new LiteralFlotante(float.Parse(currentToken.Lexema));
currentToken = lex.NextToken();
return lit;
}
else if (currentToken.Tipo == Lexico.TipoToken.TK_CHAR_LIT)
{
LitChar lit = new LitChar(currentToken.Lexema);
currentToken = lex.NextToken();
return lit;
}
else if (currentToken.Tipo == Lexico.TipoToken.TK_STRING_LIT)
{
LitString lit = new LitString(currentToken.Lexema);
currentToken = lex.NextToken();
return lit;
}
else if (currentToken.Tipo == Lexico.TipoToken.TK_TRUE)
{
LitBool lit = new LitBool(true);
currentToken = lex.NextToken();
return lit;
}
else if (currentToken.Tipo == Lexico.TipoToken.TK_FALSE)
{
LitBool lit = new LitBool(false);
currentToken = lex.NextToken();
return lit;
}
else if (currentToken.Tipo == Lexico.TipoToken.TK_ID)
{
ExprFuncion V = new ExprFuncion();
V.ID = new Variable(currentToken.Lexema, null);
currentToken = lex.NextToken();
if (currentToken.Tipo == Lexico.TipoToken.TK_PUNTO || currentToken.Tipo == Lexico.TipoToken.TK_ID || currentToken.Tipo == Lexico.TipoToken.TK_OPENPAR || currentToken.Tipo == Lexico.TipoToken.TK_OPENCOR)
{
try
{
V.ID.accesor = Accesories(V.ID.accesor);
Access tmp = ((Access)V.ID.accesor);
if (tmp.Next != null)
{
tmp = tmp.Last();
}
if (V.ID.accesor != null && tmp is AccessFunc)
{
AccessFunc v = ((AccessFunc)tmp);
V.VarList = v.Variables;
return V;
}
else
return V.ID;
}
catch (Exception ex)
{
throw ex;
}
}
else
{
return V.ID;
}
}
return null;
/*
ExprFuncion V = new ExprFuncion();
V.ID = new Variable(currentToken.Lexema, null);
currentToken = lex.NextToken();
V.ID.accesor = Accesories(V.ID.accesor);
if (V.ID.accesor != null)
return V;
else
return V.ID;
*/
// return null;
}
catch (Exception ex)
{
throw ex;
}
}