Enum FilterExpression 

pub enum FilterExpression {
    Comparison {
        field: String,
        op: CompareOp,
        value: Literal,
    },
    Boolean {
        op: BoolOp,
        lhs: Box<FilterExpression>,
        rhs: Box<FilterExpression>,
    },
}

Filter-Expression — boolescher Ausdruck ueber Field-Referenzen.

Variants

Comparison

Einzelner Vergleich.

Fields

field: String

Field-Pfad (z.B. position.x).

op: CompareOp

Vergleichs-Operator.

value: Literal

Literal-Wert (rechte Seite).

Boolean

Konjunktion / Disjunktion.

Fields

op: BoolOp

Boolescher Operator.

lhs: Box<FilterExpression>

Linke Sub-Expression.

rhs: Box<FilterExpression>

Rechte Sub-Expression.

Trait Implementations

impl Clone for FilterExpression

fn clone(&self) -> FilterExpression

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FilterExpression

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

Formats the value using the given formatter.

impl PartialEq for FilterExpression

fn eq(&self, other: &FilterExpression) -> 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 Eq for FilterExpression

impl StructuralPartialEq for FilterExpression