orm 0.2.0

A ORM framework written in Rust, unfinished yet
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#[macro_export]
macro_rules! debug {
    ($($e:expr),+) => {{
        let vec = file!().split("\\").collect::<Vec<_>>();
        let file = vec.last().unwrap();
        println!("[{}:{}] {}", file, line!(), debug_format!($($e),+));
    }};
}

macro_rules! debug_format {
    ($e:expr) => {{
        format!("{:?}", $e)
    }};
    ($e:expr, $($x:expr),+) => {{
        format!("{:?}, {}", $e, debug_format!($($x),+))
    }};
}

macro_rules! log{
    ($($x:expr),+) => {{
        println!($($x),+)
    }};
}

macro_rules! join_comma{
    ($e:expr) => {{
        format!("{}", $e)
    }};
    ($e:expr, $($x:expr),+) => {{
        format!("{}, {}", $e, join_comma!($($x),+))
    }};
}

macro_rules! expect {
    () => {{
        format!("[{}:{}]", file!(), line!())
    }};
    ($($x:expr),+) => {{
        format!("{:?}, {}", $e, join_comma!($($x),+))
    }};
}