1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
pub fn push<'a,T: ?Sized>(arg: &[&'a T], param_prefix: &str, sql: &mut String, args: &mut Vec<&'a T>) {
let start = args.len() + 1;
let end = start + arg.len();
let range = start..end;
let mut iter = range.into_iter();
if let Some( n ) = iter.next() {
sql.push_str(param_prefix);
sql.push_str(&n.to_string());
for n in iter {
sql.push(',');
sql.push_str(param_prefix);
sql.push_str(&n.to_string());
}
}
args.extend_from_slice(arg);
}
#[macro_export]
macro_rules! def_args {
($s:tt => $macro_name:ident : $args_struct:ident = $($field:ident),+) => {
#[allow(unused_macros)]
macro_rules! $macro_name {
($s($s name:ident : $s value:expr),+) => {{
let args = $args_struct { $s( $s name : $s value ),+ };
&[ $(args.$field),+ ]
}};
}
};
}