Struct FilterContext 

pub struct FilterContext<'a> {
    pub op: OpKind,
    pub dtypes: &'a [DType],
    pub input_layouts: &'a [Layout],
    pub tag: Option<&'a str>,
}

Read-only side-channel the filter chain passes to each AlternativeFilter. The fields are the union of what any shipped or planned filter needs; new fields are additive.

Borrowed lifetime — the context lives for the duration of one apply_filter_chain call, no allocation beyond what the caller already has on hand.

Fields

op: OpKind

Op kind at this decision point. Filters that index by op (a fused-op-specific preference, a Judge lookup) read this.

dtypes: &'a [DType]

Per-operand dtype list — inputs in order, then outputs. Matches the binding-table lookup key shape.

input_layouts: &'a [Layout]

Layouts of the input operands. Caps-preference filters read this to decide whether to prefer kernels that advertise strided_input.

tag: Option<&'a str>

Optional caller-supplied diagnostic tag. The pipeline echoes it into Error::FilterRejected’s ctx_summary when a hard filter rejects everything.

Implementations

impl<'a> FilterContext<'a>

pub fn new(op: OpKind, dtypes: &'a [DType], input_layouts: &'a [Layout]) -> Self

Build a context with no tag — the common case.

pub fn with_tag(self, tag: &'a str) -> Self

Builder-style: attach a diagnostic tag (e.g. the graph NodeId’s display form) for richer error messages.

pub fn summary(&self) -> String

Short diagnostic summary used in Error::FilterRejected’s ctx_summary field. Format chosen for grep-ability — op=MatMul dtypes=[F32,F32,F32] layouts=2 tag=NodeId(42).

Trait Implementations

impl<'a> Clone for FilterContext<'a>

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<'a> Copy for FilterContext<'a>

impl<'a> Debug for FilterContext<'a>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.