Struct Token 

pub struct Token {
    pub kind: TokenKind,
    pub span: Span,
}

A single token produced by the lexer, pairing a TokenKind with its source Span.

Fields

kind: TokenKind

What kind of token this is.

span: Span

Where in the source text this token appears.

Implementations

impl Token

pub fn symbol_eq(&self, s: &str) -> bool

Return true if this token is a TokenKind::Symbol matching s (case-insensitive).

Arguments

• s - The symbol string to compare against (e.g. "define", "and")

pub fn keyword_eq(&self, s: &str) -> bool

Return true if this token is a TokenKind::Keyword matching s (case-insensitive).

Arguments

• s - The keyword to compare against, without the leading : (e.g. "requirements")

pub fn variable_eq(&self, s: &str) -> bool

Return true if this token is a TokenKind::Variable matching s (case-insensitive).

Arguments

• s - The variable to compare against, with the leading ? (e.g. "?x")

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 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