Enum TokenKind

pub enum TokenKind {
    Identifier,
    String,
    Number,
    Equals,
    Dash,
    Unknown,
}

As we are only implementing a very simple shell, we only need a few token kinds. These are the token kinds we are going to use:

1. Identifier: A word, such as “ls” or “echo”.
2. String: A string, such as “Hello, world!”.
3. Number: A number, such as “123”.
4. Equals: The equals sign, used for key-value pairs.
5. Dash: The dash sign, used for flags.

Variants

Identifier

String

Number

Equals

Dash

Unknown

Trait Implementations

impl Debug for TokenKind

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

Formats the value using the given formatter.

impl PartialEq for TokenKind

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

impl StructuralPartialEq for TokenKind