Struct rustemo::LRContext

pub struct LRContext<'i, I: Input + ?Sized, S, TK> { /* private fields */ }

Context implementation for LR parsing

Implementations

impl<'i, I: Input + ?Sized, S: Default, TK> LRContext<'i, I, S, TK>

pub fn new(position: usize) -> Self

Trait Implementations

impl<'i, I, S, TK> Context<'i, I, S, TK> for LRContext<'i, I, S, TK>

where I: Input + ?Sized, S: State,

fn state(&self) -> S

The current parser state.

fn set_state(&mut self, state: S)

fn position(&self) -> usize

An absolute position in the input sequence

fn set_position(&mut self, position: usize)

fn location(&self) -> Location

A span in the input sequence, possibly in line-column style.

fn set_location(&mut self, location: Location)

fn range(&self) -> Range<usize>

A span in the input sequence

fn set_range(&mut self, range: Range<usize>)

fn token_ahead(&self) -> Option<&Token<'i, I, TK>>

Next token recognized in the input at the current parsing location

fn set_token_ahead(&mut self, token: Token<'i, I, TK>)

fn layout_ahead(&self) -> Option<&'i I>

A layout before the token ahead

fn set_layout_ahead(&mut self, layout: Option<&'i I>)

impl<'i, I: Debug + Input + ?Sized, S: Debug, TK: Debug> Debug for LRContext<'i, I, S, TK>

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

Formats the value using the given formatter.

impl<'i, I: Input + ?Sized, S: Default, TK> Default for LRContext<'i, I, S, TK>

fn default() -> Self

Returns the “default value” for a type.