struct CostChecker<'b, 'tcx> {
    tcx: TyCtxt<'tcx>,
    param_env: ParamEnv<'tcx>,
    cost: usize,
    callee_body: &'b Body<'tcx>,
    instance: Instance<'tcx>,
    validation: Result<(), &'static str>,
}
Expand description

Verify that the callee body is compatible with the caller.

This visitor mostly computes the inlining cost, but also needs to verify that types match because of normalization failure.

Fields

tcx: TyCtxt<'tcx>param_env: ParamEnv<'tcx>cost: usizecallee_body: &'b Body<'tcx>instance: Instance<'tcx>validation: Result<(), &'static str>

Trait Implementations

Count up the cost of local variables and temps, if we know the size use that, otherwise we use a moderately-large dummy cost.

This method duplicates code from MIR validation in an attempt to detect type mismatches due to normalization failure.

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.

Calls U::from(self).

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

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.

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference’s “Type Layout” chapter for details on type layout guarantees.

Size: 80 bytes