pub struct InlineLet {
    pub inline_mfp: bool,
    recursion_guard: RecursionGuard,
}
Expand description

Install replace certain Get operators with their Let value.

Fields

inline_mfp: bool

If true, inline MFPs around a Get.

We want this value to be true for the InlineLet call that comes right before crate::join_implementation::JoinImplementation runs because crate::join_implementation::JoinImplementation cannot lift MFPs through a Let.

Generally, though, we prefer to be more conservative in our inlining in order to be able to better detect CSEs.

recursion_guard: RecursionGuard

A RecursionGuard to be used by the CheckedRecursion implementation.

Implementations

Construct a new InlineLet instance with the given inline_mfp where recursion_guard is initialized with RECURSION_LIMIT as limit.

Install replace certain Get operators with their Let value.

IMPORTANT: This transform is used for cleaning up after RelationCSE, which adds Let operators pretty aggressively, leading to very deep dataflows. Nothing in this transform should lead to expensive recursive traversal of the subgraph, such as the one in MirRelationExpr::typ, since that may result in a stack overflow.

Trait Implementations

Extracts a reference to the recursion guard embedded within the type.

Checks whether it is safe to recur and calls f if so. Read more

Like CheckedRecursion::checked_recur, but operates on a mutable reference to Self. Read more

Formats the value using the given formatter. Read more

Transform a relation into a functionally equivalent relation.

A string describing the transform. Read more

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Attaches the provided Context to this type, returning a WithContext wrapper. Read more

Attaches the current Context to this type, returning a WithContext wrapper. Read more

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

Wrap the input message T in a tonic::Request

The alignment of pointer.

The type for initializers.

Initializes a with the given initializer. Read more

Dereferences the given pointer. Read more

Mutably dereferences the given pointer. Read more

Drops the object pointed to by the given pointer. Read more

Should always be Self

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more