Enum Expression 

pub enum Expression {
    Literal {
        value: Literal,
        span: AstSpan,
    },
    Constant {
        name: String,
        span: AstSpan,
    },
    Binary {
        left: Box<Expression>,
        op: BinaryOp,
        right: Box<Expression>,
        span: AstSpan,
    },
    Unary {
        op: UnaryOp,
        expr: Box<Expression>,
        span: AstSpan,
    },
    Grouped {
        expr: Box<Expression>,
        span: AstSpan,
    },
    ArgCall {
        macro_name: String,
        name: String,
        span: AstSpan,
    },
}

An arithmetic expression node

Variants

Literal

A literal value

Fields

value: Literal

The literal value

span: AstSpan

The span of the literal

Constant

Reference to a named constant

Fields

name: String

The name of the constant

span: AstSpan

The span of the constant reference

Binary

Binary operation (e.g., 1 + 2, 3 * 4)

Fields

left: Box<Expression>

Left operand

op: BinaryOp

Binary operator

right: Box<Expression>

Right operand

span: AstSpan

The span of the binary operation

Unary

Unary operation (e.g., -5)

Fields

op: UnaryOp

Unary operator

expr: Box<Expression>

Operand expression

span: AstSpan

The span of the unary operation

Grouped

Grouped/parenthesized expression

Fields

expr: Box<Expression>

The inner expression

span: AstSpan

The span of the grouped expression (including parentheses)

ArgCall

Reference to a macro argument (e.g., <arg>)

Fields

macro_name: String

The parent macro name

name: String

The argument name

span: AstSpan

The span of the arg call

Implementations

impl Expression

pub fn span(&self) -> &AstSpan

Get the span of this expression

Trait Implementations

impl Clone for Expression

fn clone(&self) -> Self

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 Eq for Expression

impl Ord for Expression

fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

fn clamp_to<R>(self, range: R) -> Self

where Self: Sized, R: ClampBounds<Self>,

🔬This is a nightly-only experimental API. (clamp_to)

Restrict a value to a certain range.

impl PartialEq for Expression

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for Expression

fn partial_cmp(&self, other: &Self) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for Expression

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 72 bytes

Size for each variant:

• Literal: 64 bytes
• Constant: 56 bytes
• Binary: 56 bytes
• Unary: 48 bytes
• Grouped: 40 bytes
• ArgCall: 72 bytes