Enum FilterExpression 

pub enum FilterExpression {
    Comparison {
        left: Box<FilterExpression>,
        op: ComparisonOp,
        right: Box<FilterExpression>,
    },
    Logical {
        left: Box<FilterExpression>,
        op: LogicalOp,
        right: Box<FilterExpression>,
    },
    Not(Box<FilterExpression>),
    Arithmetic {
        left: Box<FilterExpression>,
        op: ArithmeticOp,
        right: Box<FilterExpression>,
    },
    UnaryMinus(Box<FilterExpression>),
    FunctionCall {
        name: String,
        args: Vec<FilterExpression>,
    },
    In {
        field: Box<FilterExpression>,
        values: Vec<FilterExpression>,
    },
    Lambda {
        collection: String,
        operator: LambdaOp,
        variable: String,
        predicate: Box<FilterExpression>,
    },
    Field(String),
    StringLiteral(String),
    NumberLiteral(f64),
    BooleanLiteral(bool),
    Null,
    GuidLiteral(String),
    DateLiteral(String),
}

Filter expression AST nodes

Variants

Comparison

Comparison: field eq value

Fields

left: Box<FilterExpression>

op: ComparisonOp

right: Box<FilterExpression>

Logical

Logical: expr and expr

Fields

left: Box<FilterExpression>

op: LogicalOp

right: Box<FilterExpression>

Not(Box<FilterExpression>)

Unary not: not expr

Arithmetic

Arithmetic: expr add expr

Fields

left: Box<FilterExpression>

op: ArithmeticOp

right: Box<FilterExpression>

UnaryMinus(Box<FilterExpression>)

Unary minus: -expr

FunctionCall

Function call: contains(Name, ‘value’)

Fields

name: String

args: Vec<FilterExpression>

In

In operator: Name in (‘A’, ‘B’, ‘C’)

Fields

field: Box<FilterExpression>

values: Vec<FilterExpression>

Lambda

Lambda operator: Items/any(i: i/Value eq 5)

Fields

collection: String

operator: LambdaOp

variable: String

predicate: Box<FilterExpression>

Field(String)

Field reference

StringLiteral(String)

String literal

NumberLiteral(f64)

Number literal

BooleanLiteral(bool)

Boolean literal

Null

Null literal

GuidLiteral(String)

GUID literal

DateLiteral(String)

Date literal

Trait Implementations

impl Clone for FilterExpression

fn clone(&self) -> FilterExpression

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FilterExpression

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

Formats the value using the given formatter.

impl PartialEq for FilterExpression

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