Enum ObservationExpression 

pub enum ObservationExpression {
    Observation(Box<ComparisonExpression>),
    And(Box<ObservationExpression>, Box<ObservationExpression>),
    Or(Box<ObservationExpression>, Box<ObservationExpression>),
    FollowedBy(Box<ObservationExpression>, Box<ObservationExpression>),
    Qualified {
        expression: Box<ObservationExpression>,
        qualifier: Qualifier,
    },
}

Observation-level expression tree. FOLLOWEDBY/AND/OR combine observations; qualifiers attach to a sub-expression.

Variants

Observation(Box<ComparisonExpression>)

A single [ comparisonExpr ] observation.

And(Box<ObservationExpression>, Box<ObservationExpression>)

AND of two observation expressions.

Or(Box<ObservationExpression>, Box<ObservationExpression>)

OR of two observation expressions.

FollowedBy(Box<ObservationExpression>, Box<ObservationExpression>)

FOLLOWEDBY: the left expression’s observations precede the right’s.

Qualified

A sub-expression with a postfix Qualifier attached.

Fields

expression: Box<ObservationExpression>

The qualified sub-expression.

qualifier: Qualifier

The attached qualifier.

Trait Implementations

impl Clone for ObservationExpression

fn clone(&self) -> ObservationExpression

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ObservationExpression

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ObservationExpression

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for ObservationExpression

fn eq(&self, other: &ObservationExpression) -> 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 Serialize for ObservationExpression

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for ObservationExpression