Struct TokenCursor

pub struct TokenCursor {
    pub tokens: Vec<Token>,
    pub current_position: usize,
}

Cursor for navigating through a vector of tokens

This struct provides methods to access the current token, peek ahead or behind, and advance the cursor position.

Fields

• tokens - A vector of tokens to navigate through.
• current_position - The current position of the cursor within the token vector.

Fields

tokens: Vec<Token>

current_position: usize

Implementations

impl TokenCursor

pub fn current(&self) -> Option<&Token>

Returns the current token, if any.

pub fn peek_ahead(&self, n: usize) -> Option<&Token>

Returns the nth next token, if any.

Arguments

• n - The number of tokens to look ahead.

Returns

An Option containing a reference to the token if it exists, or None if it is out of bounds.

pub fn _peek_behind(&self, n: usize) -> Option<&Token>

Returns the nth previous token, if any.

Arguments

• n - The number of tokens to look behind.

Returns

An Option containing a reference to the token if it exists, or None if it is out of

pub fn advance(&mut self)

Moves the cursor forward one position.

pub fn _set_position(&mut self, pos: usize)

Sets the cursor’s position to the specified position.

Arguments

• pos - The position to set the cursor to.

Panics

Panics if the position is out of bounds for the token list.

pub fn position(&self) -> usize

Returns the current position of the cursor.

pub fn is_at_eof(&self) -> bool

Returns whether the cursor is at the end of the token list.

Trait Implementations

impl Debug for TokenCursor

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

Formats the value using the given formatter.