Enum Expr 

pub enum Expr {
    Number {
        value: f64,
        text: String,
        span: Span,
    },
    String {
        value: String,
        span: Span,
    },
    Bool {
        value: bool,
        span: Span,
    },
    Null {
        span: Span,
    },
    Array {
        elements: Vec<Expr>,
        span: Span,
    },
    Dict {
        entries: Vec<DictEntry>,
        span: Span,
    },
    Comprehension {
        element: Box<Expr>,
        variable: String,
        variable_span: Span,
        index: Option<(String, Span)>,
        iterable: Box<Expr>,
        condition: Option<Box<Expr>>,
        span: Span,
    },
    Lambda {
        params: Vec<(String, Span)>,
        body: Box<Expr>,
        span: Span,
    },
    StringModifier {
        modifier: char,
        value: String,
        format_text: Option<String>,
        interpolations: Vec<Expr>,
        span: Span,
    },
    Call {
        name: String,
        args: Vec<CallArg>,
        span: Span,
    },
    ReceiverCall {
        receiver: Box<Expr>,
        name: String,
        args: Vec<CallArg>,
        span: Span,
    },
    Name {
        name: String,
        span: Span,
    },
    Member {
        receiver: Box<Expr>,
        member: String,
        member_span: Span,
        span: Span,
    },
    Index {
        array: Box<Expr>,
        index: Box<Expr>,
        span: Span,
    },
    Binary {
        op: String,
        left: Box<Expr>,
        right: Box<Expr>,
        span: Span,
    },
    Unary {
        op: String,
        operand: Box<Expr>,
        span: Span,
    },
}

An expression.

Variants

Number

Fields

value: f64

text: String

span: Span

String

Fields

value: String

span: Span

Bool

Fields

value: bool

span: Span

Null

Fields

span: Span

Array

Fields

elements: Vec<Expr>

span: Span

Dict

Fields

entries: Vec<DictEntry>

span: Span

Comprehension

Fields

element: Box<Expr>

variable: String

variable_span: Span

index: Option<(String, Span)>

iterable: Box<Expr>

condition: Option<Box<Expr>>

span: Span

Lambda

Fields

params: Vec<(String, Span)>

body: Box<Expr>

span: Span

StringModifier

Fields

modifier: char

value: String

format_text: Option<String>

The decoded f-string template, with interpolation placeholders normalized to {0}, {1}, …; present only for modifier f.

interpolations: Vec<Expr>

Expressions parsed from f-string interpolation regions, in source order. Their spans point into the original string literal.

span: Span

Call

A plain function call.

Fields

name: String

args: Vec<CallArg>

span: Span

ReceiverCall

A call on a receiver (x.f(...)).

Fields

receiver: Box<Expr>

name: String

args: Vec<CallArg>

span: Span

Name

An unresolved identifier (resolved during lowering).

Fields

name: String

span: Span

Member

A member access x.y (resolved during lowering).

Fields

receiver: Box<Expr>

member: String

member_span: Span

The exact span of the member identifier after ..

span: Span

Index

Fields

array: Box<Expr>

index: Box<Expr>

span: Span

Binary

Fields

op: String

left: Box<Expr>

right: Box<Expr>

span: Span

Unary

Fields

op: String

operand: Box<Expr>

span: Span

Implementations

impl Expr

pub fn span(&self) -> Span

The source span of this expression.

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.