dfir_lang/graph/ops/
join_fused_rhs.rs

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1use quote::{ToTokens, quote_spanned};
2use syn::parse_quote;
3
4use super::{
5    DelayType, OperatorCategory, OperatorConstraints, OperatorWriteOutput, PortIndexValue, RANGE_0,
6    RANGE_1, WriteContextArgs,
7};
8
9/// See `join_fused_lhs`
10///
11/// This operator is identical to `join_fused_lhs` except that it is the right hand side that is fused instead of the left hand side.
12pub const JOIN_FUSED_RHS: OperatorConstraints = OperatorConstraints {
13    name: "join_fused_rhs",
14    categories: &[OperatorCategory::MultiIn],
15    hard_range_inn: &(2..=2),
16    soft_range_inn: &(2..=2),
17    hard_range_out: RANGE_1,
18    soft_range_out: RANGE_1,
19    num_args: 1,
20    persistence_args: &(0..=2),
21    type_args: RANGE_0,
22    is_external_input: false,
23    has_singleton_output: false,
24    flo_type: None,
25    ports_inn: Some(|| super::PortListSpec::Fixed(parse_quote! { 0, 1 })),
26    ports_out: None,
27    input_delaytype_fn: |idx| match idx {
28        PortIndexValue::Int(path) if "1" == path.to_token_stream().to_string() => {
29            Some(DelayType::Stratum)
30        }
31        _ => None,
32    },
33    write_fn: |wc @ &WriteContextArgs {
34                   op_span,
35                   ident,
36                   inputs,
37                   ..
38               },
39               diagnostics| {
40        let inputs = inputs.iter().cloned().rev().collect::<Vec<_>>();
41
42        let wc = WriteContextArgs {
43            inputs: &inputs[..],
44            ..wc.clone()
45        };
46
47        let OperatorWriteOutput {
48            write_prologue,
49            write_prologue_after,
50            write_iterator,
51            write_iterator_after,
52        } = (super::join_fused_lhs::JOIN_FUSED_LHS.write_fn)(&wc, diagnostics)?;
53
54        let write_iterator = quote_spanned! {op_span=>
55            #write_iterator
56            let #ident = #ident.map(|(k, (v1, v2))| (k, (v2, v1)));
57        };
58
59        Ok(OperatorWriteOutput {
60            write_prologue,
61            write_prologue_after,
62            write_iterator,
63            write_iterator_after,
64        })
65    },
66};
dfir_lang/graph/ops/join_fused_rhs.rs

dfir_lang/graph/ops/
join_fused_rhs.rs
