Enum Token

pub enum Token {
    Symbol(Box<str>),
    List(Vec<Token>),
}

Represents the token lists.

Variants

Symbol(Box<str>)

A symbol token represented by its name.

List(Vec<Token>)

A list token containing other tokens.

Implementations

impl Token

pub fn symbol(self) -> Option<Box<str>>

If the token is a Symbol, returns an Option, containing the symbol name. Else returns None.

pub fn symbol_ref(&self) -> Option<&str>

Same as fn symbol, but returns a ref.

pub fn list(self) -> Option<Vec<Self>>

If the token is a List, returns an Option, containing the elements. Else returns None.

pub fn list_ref(&self) -> Option<&Vec<Self>>

Same as fn list, but returns a ref.

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<T: Copy + Into<Self>> From<&T> for Token

fn from(arg: &T) -> Self

Converts to this type from the input type.

impl From<&str> for Token

fn from(arg: &str) -> Self

Converts to this type from the input type.

impl From<Box<str>> for Token

fn from(arg: Box<str>) -> Self

Converts to this type from the input type.

impl From<String> for Token

fn from(arg: String) -> Self

Converts to this type from the input type.

impl<T: Into<Self>> From<Vec<T>> for Token

fn from(list: Vec<T>) -> Self

Converts to this type from the input type.

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 Eq for Token

impl StructuralPartialEq for Token