Enum Expr 

pub enum Expr {
    And(Box<Expr>, Box<Expr>),
    Or(Box<Expr>, Box<Expr>),
    Not(Box<Expr>),
    Cmp {
        lhs: Operand,
        op: CmpOp,
        rhs: Operand,
    },
    Truthy(Operand),
    IsNull(Operand),
    IsNotNull(Operand),
    In {
        expr: Operand,
        list: Vec<Operand>,
    },
}

Variants

And(Box<Expr>, Box<Expr>)

Or(Box<Expr>, Box<Expr>)

Not(Box<Expr>)

Cmp

Fields

lhs: Operand

op: CmpOp

rhs: Operand

Truthy(Operand)

Standalone operand used as a boolean predicate.

Enables WHERE textMatches(n.bio, 'query') without requiring an explicit comparison. Truthiness: Bool(true) → true, Bool(false) → false, null → false, any other non-null non-false value → true.

IsNull(Operand)

operand IS NULL — true iff the operand evaluates to null.

IsNotNull(Operand)

operand IS NOT NULL — true iff the operand is non-null.

In

expr IN [a, b, $p] or expr IN $list ($list is Value::List).

Fields

expr: Operand

list: Vec<Operand>

Trait Implementations

impl Clone for Expr

fn clone(&self) -> Expr

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Expr

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

Formats the value using the given formatter.

impl PartialEq for Expr

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Expr