Enum Modifier 

pub(crate) enum Modifier {
    CouldError,
    IntroducesNulls,
    IsMonotone,
    IsInfixOp,
    PropagatesNulls,
    Inverse,
    PreservesUniqueness,
    IsEliminableCast,
    Negate,
    IsInfinityMonotone,
    IsAssociative,
}

A modifier that maps directly onto one optional trait method.

Modifiers that do not produce a trait method, such as sqlname, output_type, output_type_expr, test, and skip_display, are absent: crate::generate::generate handles those explicitly because they feed Display, the output-type body, or the expansion decision instead.

Variants

CouldError

IntroducesNulls

IsMonotone

IsInfixOp

PropagatesNulls

Inverse

PreservesUniqueness

IsEliminableCast

Negate

IsInfinityMonotone

IsAssociative

Implementations

impl Modifier

pub(crate) const ALL: [Modifier; 11]

Every method-producing modifier.

pub(crate) fn name(&self) -> &'static str

The attribute key, which is also the generated method name.

Trait Implementations

impl Clone for Modifier

fn clone(&self) -> Modifier

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Modifier

impl Debug for Modifier

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

Formats the value using the given formatter.

impl Eq for Modifier

impl PartialEq for Modifier

fn eq(&self, other: &Modifier) -> bool

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Modifier