Expresiones parexp()
{
if (currentToken.Tipo == TipoToken.TK_OPENPAR)
{
currentToken = lex.NextToken();
Expresiones tmp;
try
{
tmp = Expr();
}
catch (Exception ex) { throw ex; }
if (currentToken.Tipo == TipoToken.TK_CLOSEPAR)
{
currentToken = lex.NextToken();
return tmp;
}
else throw new Exception("Se esperaba )");
}
else if (currentToken.Tipo == TipoToken.TK_NOT)
{
currentToken = lex.NextToken();
try
{
return new Not(Expr());
}
catch (Exception ex) { throw ex; }
}
else if (currentToken.Tipo == TipoToken.TK_ID)
{
string tmp = currentToken.Lexema;
currentToken = lex.NextToken();
if (currentToken.Tipo == TipoToken.TK_OPENPAR)
{
ExprFuncion ret = new ExprFuncion();
ret.ID = new Variable(tmp, null);
ret.VarList = new ListaExpre();
try
{
ret.VarList.Ex = ExprList();
}
catch (Exception ex) { throw ex; }
if (currentToken.Tipo != TipoToken.TK_CLOSEPAR)
throw new Exception("Se esperaba ).");
else
{
currentToken = lex.NextToken();
return ret;
}
}
else
{
try
{
return new Variable(tmp, AccessList(tmp));
}
catch (Exception ex) { throw ex; }
}
}
else return LIT();
}
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;
}
}