struct AbstractFunc {
handler: AbstractFuncHandler,
pushdownable: (bool, bool),
}Expand description
The abstract-domain counterpart of a BinaryFunc: a binary function we’ve added special-case handling for; including:
- Either a complete override of ResultSpec computation, or a way to compute monotonicity dynamically from the input specs.
- Metadata on whether / not this function is pushdownable. See Trace.
Note: today a function can have either a handler override or a dynamic-monotonicity verdict, but not both. If a future function wants both, promote AbstractFuncHandler from an enum to a struct with two optional fields.
Fields§
§handler: AbstractFuncHandler§pushdownable: (bool, bool)(left, right): per-argument pushdownability hint consumed by
Trace. true for an argument means the function preserves enough
structure that, with sufficient information about that argument’s
range, the output spec can be predicted — i.e. the predicate is a
pushdown candidate when that argument is constant or a tight range.
Implementations§
Source§impl AbstractFunc
impl AbstractFunc
Sourcefn for_func(func: &BinaryFunc) -> Option<AbstractFunc>
fn for_func(func: &BinaryFunc) -> Option<AbstractFunc>
Returns the special-case handling for a particular function, if it exists.
Auto Trait Implementations§
impl Freeze for AbstractFunc
impl RefUnwindSafe for AbstractFunc
impl Send for AbstractFunc
impl Sync for AbstractFunc
impl Unpin for AbstractFunc
impl UnsafeUnpin for AbstractFunc
impl UnwindSafe for AbstractFunc
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