Enum rustc_hir_typeck::fn_ctxt::arg_matrix::Error

pub(crate) enum Error<'tcx> {
    Invalid(ProvidedIdx, ExpectedIdx, Compatibility<'tcx>),
    Missing(ExpectedIdx),
    Extra(ProvidedIdx),
    Swap(ProvidedIdx, ProvidedIdx, ExpectedIdx, ExpectedIdx),
    Permutation(Vec<(ExpectedIdx, ProvidedIdx)>),
}

Similar to Issue, but contains some extra information

Variants

Invalid(ProvidedIdx, ExpectedIdx, Compatibility<'tcx>)

The provided argument is the invalid type for the expected input

Missing(ExpectedIdx)

There is a missing input

Extra(ProvidedIdx)

There’s a superfluous argument

Swap(ProvidedIdx, ProvidedIdx, ExpectedIdx, ExpectedIdx)

Two arguments should be swapped

Permutation(Vec<(ExpectedIdx, ProvidedIdx)>)

Several arguments should be reordered

Trait Implementations

impl<'tcx> Debug for Error<'tcx>

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

Formats the value using the given formatter.

impl Ord for Error<'_>

fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized + PartialOrd,

Restrict a value to a certain interval.

impl<'tcx> PartialEq for Error<'tcx>

fn eq(&self, other: &Error<'tcx>) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for Error<'_>

fn partial_cmp(&self, other: &Self) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl<'tcx> Eq for Error<'tcx>

impl<'tcx> StructuralPartialEq for Error<'tcx>

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: 40 bytes

Size for each variant:

• Invalid: 40 bytes
• Missing: 4 bytes
• Extra: 4 bytes
• Swap: 16 bytes
• Permutation: 24 bytes