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#[macro_export]
macro_rules! unwrap_result_or_return_error
{
    ( $expression:expr, $message:expr ) =>
    {
        match $expression
        {
            Ok(x) => x,
            Err(y) => return Err(format!("{}: {}",$message, y))
        }
    }
}

#[macro_export]
macro_rules! unwrap_result_or_return_error_debug
{
    ( $expression:expr, $message:expr ) =>
    {
        match $expression
        {
            Ok(x) => x,
            Err(y) => return Err(format!("{}: {:?}",$message, y))
        }
    }
}

#[macro_export]
macro_rules! unwrap_option_or_return_error
{
    ( $expression:expr, $message:expr ) =>
    {
        match $expression
        {
            Some(x) => x,
            None => return Err(format!("{}", $message))
        }
    }
}

#[macro_export]
macro_rules! unwrap_option_or_return
{
    ( $expression:expr, $return_val:expr ) =>
    {
        match $expression
        {
            Some(x) => x,
            None => return $return_val
        }
    }
}

#[macro_export]
macro_rules! unwrap_or_panic
{
    ( $expression:expr ) =>
    {
        match $expression
        {
            Ok(x) => x,
            Err(y) => panic!(y)
        }
    }
}