Enum ReturnKind

pub enum ReturnKind {
    Unknown(Box<UnknownCause>),
    Scalar,
    String,
    InstantVector,
    RangeVector,
}

A predicted return datatype

Variants

Unknown(Box<UnknownCause>)

Scalar

String

InstantVector

RangeVector

Implementations

impl ReturnKind

pub fn unknown<S>(message: S, expression: Expression) -> Self

where S: Into<String>,

pub fn is_operator_valid(&self) -> bool

Returns true if this ReturnKind is a valid sub-expression of an operator, false if not.

pub fn is_scalar(&self) -> bool

Trait Implementations

impl Clone for ReturnKind

fn clone(&self) -> ReturnKind

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ReturnKind

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

Formats the value using the given formatter.

impl PartialEq for ReturnKind

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl StructuralPartialEq for ReturnKind