Enum phreak_engine::condition::ConditionField

pub enum ConditionField {
    Const(String),
    Variable(String),
    Any,
}

A ConditionField describes when a Fact element matches

The simplest match is a constant match. Constants are checked in the alphamemories, and must match exactly against the field. They are used as the most basic rules, and will be checked before any further processing occurs.

Variable fields are more complex. They are used to compare between different facts. A Variable on a single fact does nothing. Only when it is compared against another variable does it affect the matching. Variables are used to construct the more complex rules.

Variants

Const(String)

A Const must match exactly.

Variable(String)

A Variable is named, and matches anything. It will be compared against an other Variable.

Any

This field is irrelevant for the matching rules.

Trait Implementations

impl Clone for ConditionField

fn clone(&self) -> ConditionField

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ConditionField

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

Formats the value using the given formatter.

impl Eq for ConditionField

impl<'_> From<&'_ ConditionField> for Memory

fn from(field: &ConditionField) -> Self

Performs the conversion.

impl PartialEq<ConditionField> for ConditionField

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

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

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

This method tests for !=.

impl StructuralEq for ConditionField

impl StructuralPartialEq for ConditionField