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
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
use quote::quote_spanned;
use super::{
DelayType, OperatorCategory, OperatorConstraints, OperatorWriteOutput,
WriteContextArgs, RANGE_0, RANGE_1,
};
/// Takes a stream as input and produces a sorted version of the stream as output.
///
/// ```hydroflow
/// source_iter(vec![2, 3, 1])
/// -> sort()
/// -> assert_eq([1, 2, 3]);
/// ```
///
/// `sort` is blocking. Only the values collected within a single tick will be sorted and
/// emitted.
pub const SORT: OperatorConstraints = OperatorConstraints {
name: "sort",
categories: &[OperatorCategory::Persistence],
hard_range_inn: RANGE_1,
soft_range_inn: RANGE_1,
hard_range_out: RANGE_1,
soft_range_out: RANGE_1,
num_args: 0,
persistence_args: RANGE_0,
type_args: RANGE_0,
is_external_input: false,
has_singleton_output: false,
ports_inn: None,
ports_out: None,
input_delaytype_fn: |_| Some(DelayType::Stratum),
write_fn: |&WriteContextArgs {
op_span,
ident,
inputs,
is_pull,
..
},
_| {
assert!(is_pull);
let input = &inputs[0];
let write_iterator = quote_spanned! {op_span=>
// TODO(mingwei): unnecessary extra handoff into_iter() then collect().
// Fix requires handoff specialization.
let #ident = {
let mut v = #input.collect::<::std::vec::Vec<_>>();
v.sort_unstable();
v.into_iter()
};
};
Ok(OperatorWriteOutput {
write_iterator,
..Default::default()
})
},
};