antiQuoteExpr :: Parser Expr
antiQuoteExpr = do
    symbol "@{"
    q <- many $ noneOf "}"
    symbol "}"
    return $ AntiQuote q
antiQuoteExpr :: Parser Expr
antiQuoteExpr = do
    symbol "@{"
    q <- many $ noneOf "}"
    symbol "}"
    return $ AntiQuote q
antiQuoteExpr = do
    symbol "@{"
    q <- many $ noneOf "}"
    symbol "}"
    return $ AntiQuote q