Struct Token

pub struct Token {
    pub value: TokenEnum,
    pub span: Span,
}

The token type.

Fields

value: TokenEnum

The type of token.

span: Span

The location of the token.

Implementations

impl Token

pub fn expect<T>(&self) -> Result<T>

where TokenEnum: AsVariant<T>, T: Clone,

Downcast this token to its inner type. Returns an ErrorType::UnexpectedToken when T is not the type of the inner token.

Examples

use vyder_core::prelude::*;

let token: Token = Token { value: tokens::Number { value: 0.0 }.into(), span: Span::new((1, 1, 0), "example") };
assert!(token.expect::<tokens::Return>().is_err());
let number_token: tokens::Number = token.expect::<tokens::Number>().unwrap();
assert_eq!(number_token.value, 0.0);

Trait Implementations

impl Clone for Token

fn clone(&self) -> Token

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Token

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

Formats the value using the given formatter.

impl Display for Token

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

Formats the value using the given formatter.

impl PartialEq for Token

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