public void compile()
{
currentToken = lex.nextToken();
Sentence programa = program();
Console.WriteLine(programa.genCode() + "\n\n");
programa.validarSemantica();
programa.interpretar();
int x = 0;
}
void match(TokenType tokentype)
{
if (currentToken.Tipo == tokentype)
currentToken = lex.nextToken();
else
throw new Exception("En la linea: " + Lexer.line + " columna: " + Lexer.column + " se esperaba \'" + tokentype + "\' token actual -> " + currentToken.Tipo);
}
void match(string token)
{
try
{
TokenType type = lex.getTokenType(token);
if (currentToken.Tipo == type)
currentToken = lex.nextToken();
else
throw new Exception("En la linea: " + Lexer.line + " columna: " + Lexer.column + " se esperaba \'" + token + "\' con id \'" + type + "\' token actual -> " + currentToken.Lexema);
}
catch (Exception ex)
{
throw new Exception(ex.ToString());
}
}
Expr primary_expr()
{
switch (currentToken.Tipo)
{
case TokenType.TRUE:
BooleanoLiteral booleanoTrue = new BooleanoLiteral(true);
match(TokenType.TRUE);
return booleanoTrue;
case TokenType.FALSE:
BooleanoLiteral booleanoFalse = new BooleanoLiteral(false);
match(TokenType.FALSE);
return booleanoFalse;
case TokenType.CHARACTER_LITERAL:
CaracterLiteral caracter = new CaracterLiteral(char.Parse(currentToken.Lexema));
currentToken = lex.nextToken();
return caracter;
case TokenType.STRING_LITERAL:
CadenaLiteral cadena = new CadenaLiteral(currentToken.Lexema);
currentToken = lex.nextToken();
return cadena;
case TokenType.INTEGER_LITERAL:
EnteroLiteral entero = new EnteroLiteral(int.Parse(currentToken.Lexema));
match(TokenType.INTEGER_LITERAL);
return entero;
case TokenType.REAL_LITERAL:
RealLiteral real = new RealLiteral(float.Parse(currentToken.Lexema));
match(TokenType.INTEGER_LITERAL);
return real;
case TokenType.LEFT_PARENTHESIS:
match("("); Expr expresion = expr(); match(")");
return expresion;
default:
throw new Exception("Error en la expresion linea: " + Lexer.line + " columna: " + Lexer.column + " currenttoken -> " + currentToken.Lexema);
}
}