Enum Expr 

pub enum Expr {
    Cmp {
        op: CmpOp,
        lhs: Box<Expr>,
        rhs: Box<Expr>,
    },
    And(Box<Expr>, Box<Expr>),
    Or(Box<Expr>, Box<Expr>),
    Not(Box<Expr>),
    IsNull(Box<Expr>),
    IsNotNull(Box<Expr>),
    StartsWith {
        expr: Box<Expr>,
        pattern: String,
    },
    EndsWith {
        expr: Box<Expr>,
        pattern: String,
    },
    Contains {
        expr: Box<Expr>,
        pattern: String,
    },
    PropAccess {
        var: String,
        prop: String,
    },
    VarRef(String),
    Lit(Literal),
    Agg {
        fn_: AggFn,
        expr: Option<Box<Expr>>,
    },
    Arith {
        op: ArithOp,
        lhs: Box<Expr>,
        rhs: Box<Expr>,
    },
    Param {
        name: String,
    },
    Case {
        arms: Vec<CaseArm>,
        else_expr: Option<Box<Expr>>,
    },
    In {
        expr: Box<Expr>,
        items: Vec<Expr>,
    },
    ListLiteral {
        items: Vec<Expr>,
    },
    MapLiteral {
        entries: Vec<(String, Expr)>,
    },
    Exists {
        inner: Box<Expr>,
    },
    ListComprehension {
        var: String,
        list: Box<Expr>,
        predicate: Option<Box<Expr>>,
        map: Box<Expr>,
    },
}

Variants

Cmp

Fields

op: CmpOp

lhs: Box<Expr>

rhs: Box<Expr>

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

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

Not(Box<Expr>)

IsNull(Box<Expr>)

IsNotNull(Box<Expr>)

StartsWith

Fields

expr: Box<Expr>

pattern: String

EndsWith

Fields

expr: Box<Expr>

pattern: String

Contains

Fields

expr: Box<Expr>

pattern: String

PropAccess

var.prop property access

Fields

var: String

prop: String

VarRef(String)

Bare variable reference (used in RETURN, ORDER BY, etc.)

Lit(Literal)

Agg

Aggregation function. expr is None for COUNT(*).

Fields

fn_: AggFn

expr: Option<Box<Expr>>

Arith

Fields

op: ArithOp

lhs: Box<Expr>

rhs: Box<Expr>

Param

Fields

name: String

Case

Fields

arms: Vec<CaseArm>

else_expr: Option<Box<Expr>>

In

expr IN [item1, item2, ...]

Fields

expr: Box<Expr>

items: Vec<Expr>

ListLiteral

[item1, item2, ...]

Fields

items: Vec<Expr>

MapLiteral

{key: value, ...}

Fields

entries: Vec<(String, Expr)>

Exists

exists(inner)

Fields

inner: Box<Expr>

ListComprehension

[var IN list WHERE predicate | map]

Fields

var: String

list: Box<Expr>

predicate: Option<Box<Expr>>

map: Box<Expr>

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

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 Expr