tract_core/ops/array/
broadcast.rs

1use crate::internal::*;
2
3#[derive(Debug, Clone, new, Hash)]
4pub struct MultiBroadcastTo {
5    pub shape: ShapeFact,
6}
7
8impl Op for MultiBroadcastTo {
9    fn name(&self) -> StaticName {
10        "MultiBroadcastTo".into()
11    }
12
13    op_as_typed_op!();
14}
15
16impl EvalOp for MultiBroadcastTo {
17    fn is_stateless(&self) -> bool {
18        true
19    }
20
21    fn eval_with_session(
22        &self,
23        _node_id: usize,
24        session: &SessionState,
25        inputs: TVec<TValue>,
26    ) -> TractResult<TVec<TValue>> {
27        let shape = self.shape.eval_to_usize(&session.resolved_symbols)?;
28        Ok(tvec!(inputs[0].broadcast_to_shape(&shape)?.into_tvalue()))
29    }
30}
31
32impl TypedOp for MultiBroadcastTo {
33    fn output_facts(&self, inputs: &[&TypedFact]) -> TractResult<TVec<TypedFact>> {
34        ensure!(inputs.len() == 1);
35        let mut fact = inputs[0].datum_type.fact(self.shape.clone());
36        fact.uniform.clone_from(&inputs[0].uniform);
37        Ok(tvec!(fact))
38    }
39
40    fn concretize_dims(
41        &self,
42        _source: &TypedModel,
43        node: &TypedNode,
44        target: &mut TypedModel,
45        mapping: &HashMap<OutletId, OutletId>,
46        values: &SymbolValues,
47    ) -> TractResult<TVec<OutletId>> {
48        let input = mapping[&node.inputs[0]];
49        let op =
50            Self { shape: self.shape.iter().map(|d| d.eval(values)).collect::<TVec<_>>().into() };
51        target.wire_node(&node.name, op, &[input])
52    }
53
54    fn declutter(
55        &self,
56        model: &TypedModel,
57        node: &TypedNode,
58    ) -> TractResult<Option<TypedModelPatch>> {
59        let input_fact = model.outlet_fact(node.inputs[0])?;
60        if input_fact.shape == self.shape {
61            TypedModelPatch::shunt_one_op(model, node)
62        } else {
63            Ok(None)
64        }
65    }
66
67    as_op!();
68}
tract_core/ops/array/broadcast.rs

tract_core/ops/array/
broadcast.rs
