Enum ExpressionKind 

pub enum ExpressionKind {
    Literal(LiteralValue),
    FactReference(FactReference),
    RuleReference(RuleReference),
    LogicalAnd(Box<Expression>, Box<Expression>),
    LogicalOr(Box<Expression>, Box<Expression>),
    Arithmetic(Box<Expression>, ArithmeticOperation, Box<Expression>),
    Comparison(Box<Expression>, ComparisonOperator, Box<Expression>),
    FactHasAnyValue(FactReference),
    UnitConversion(Box<Expression>, ConversionTarget),
    LogicalNegation(Box<Expression>, NegationType),
    MathematicalOperator(MathematicalOperator, Box<Expression>),
    Veto(VetoExpression),
}

The kind/type of expression

Variants

Literal(LiteralValue)

FactReference(FactReference)

RuleReference(RuleReference)

LogicalAnd(Box<Expression>, Box<Expression>)

LogicalOr(Box<Expression>, Box<Expression>)

Arithmetic(Box<Expression>, ArithmeticOperation, Box<Expression>)

Comparison(Box<Expression>, ComparisonOperator, Box<Expression>)

FactHasAnyValue(FactReference)

UnitConversion(Box<Expression>, ConversionTarget)

LogicalNegation(Box<Expression>, NegationType)

MathematicalOperator(MathematicalOperator, Box<Expression>)

Veto(VetoExpression)

Trait Implementations

impl Clone for ExpressionKind

fn clone(&self) -> ExpressionKind

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ExpressionKind

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

Formats the value using the given formatter.

impl PartialEq for ExpressionKind

fn eq(&self, other: &ExpressionKind) -> 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 ExpressionKind