Enum Expression 

pub enum Expression {
    Or {
        span: Span,
        operator: LogicalOperator,
        left: Box<Expression>,
        right: Box<Expression>,
    },
    And {
        span: Span,
        operator: LogicalOperator,
        left: Box<Expression>,
        right: Box<Expression>,
    },
    Not {
        span: Span,
        operator: LogicalOperator,
        inner: Box<Expression>,
    },
    Comparison {
        span: Span,
        left: Box<Expression>,
        operator: ComparisonOperator,
        right: Box<Expression>,
    },
    FunctionCall {
        span: Span,
        name: String,
        arguments: Vec<Expression>,
    },
    StringLiteral {
        span: Span,
        value: Vec<Element>,
    },
    NumberLiteral {
        span: Span,
        value: i64,
    },
    BoolLiteral {
        span: Span,
        value: bool,
    },
    Null {
        span: Span,
    },
    Group {
        span: Span,
        inner: Box<Expression>,
    },
    Element(Box<Element>),
}

조건식 Expression AST

Variants

Or

논리 OR 연산 (||)

Fields

span: Span

operator: LogicalOperator

left: Box<Expression>

right: Box<Expression>

And

논리 AND 연산 (&&)

Fields

span: Span

operator: LogicalOperator

left: Box<Expression>

right: Box<Expression>

Not

논리 NOT 연산 (!)

Fields

span: Span

operator: LogicalOperator

inner: Box<Expression>

Comparison

비교 연산 (==, !=, >, <, >=, <=)

Fields

span: Span

left: Box<Expression>

operator: ComparisonOperator

right: Box<Expression>

FunctionCall

함수 호출 (int, len, str)

Fields

span: Span

name: String

arguments: Vec<Expression>

StringLiteral

문자열 리터럴

Fields

span: Span

value: Vec<Element>

NumberLiteral

숫자 리터럴

Fields

span: Span

value: i64

BoolLiteral

불리언 리터럴

Fields

span: Span

value: bool

Null

Null 리터럴

Fields

span: Span

Group

괄호 그룹

Fields

span: Span

inner: Box<Expression>

Element(Box<Element>)

기존 Element를 expression 안에 포함 (Variable, Null 매크로 등)

Trait Implementations

impl Clone for Expression

fn clone(&self) -> Expression

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Expression

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

Formats the value using the given formatter.

impl Serialize for Expression

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

where __S: Serializer,

Serialize this value into the given Serde serializer.