Enum Expr 

pub enum Expr {
    Eq(String, Value),
    Ne(String, Value),
    Lt(String, Value),
    Lte(String, Value),
    Gt(String, Value),
    Gte(String, Value),
    In(String, Vec<Value>),
    Between(String, Value, Value),
    IsNull(String),
    IsNotNull(String),
    Like(String, String),
    And(Box<Expr>, Box<Expr>),
    Or(Box<Expr>, Box<Expr>),
    Not(Box<Expr>),
}

Variants

Eq(String, Value)

Ne(String, Value)

Lt(String, Value)

Lte(String, Value)

Gt(String, Value)

Gte(String, Value)

In(String, Vec<Value>)

Between(String, Value, Value)

IsNull(String)

IsNotNull(String)

Like(String, String)

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

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

Not(Box<Expr>)

Implementations

impl Expr

pub fn and(self, rhs: Expr) -> Expr

pub fn or(self, rhs: Expr) -> Expr

pub fn not(self) -> Expr

pub fn depth(&self) -> usize

Calculates the maximum nesting depth of this expression tree. Used to prevent stack overflow from deeply nested expressions.

pub fn validate_depth(&self) -> Result<(), AedbError>

Validates that the expression depth does not exceed MAX_EXPR_DEPTH. Returns an error if the expression is too deeply nested.

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<'de> Deserialize<'de> for Expr

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Hash for Expr

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for Expr

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

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for Expr

impl StructuralPartialEq for Expr