Struct State 

pub struct State<'i> {
    pub input: &'i str,
    pub pos: Pos,
    pub n: i32,
    pub c: Context,
}

Immutable parser state threaded through every combinator.

State borrows the input slice for the lifetime 'i. Positions in the slice are tracked via pos; n and c carry the YAML context parameters (indentation level and context mode) through combinator composition.

Fields

input: &'i str

Remaining (unconsumed) input.

pos: Pos

Position of the first byte of input within the original document.

n: i32

Indentation level n (YAML spec parameter).

c: Context

Context mode c (YAML spec parameter).

Implementations

impl<'i> State<'i>

pub const fn new(input: &'i str) -> Self

Construct a fresh state at the beginning of input.

pub const fn with_context(input: &'i str, n: i32, c: Context) -> Self

Construct a state with explicit context parameters.

pub fn peek(&self) -> Option<char>

Peek at the next char without advancing.

pub fn advance(self, ch: char) -> Self

Advance the state past ch, returning the updated state.

The ch must equal the first character of self.input.

Trait Implementations

impl<'i> Clone for State<'i>

fn clone(&self) -> State<'i>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<'i> Debug for State<'i>

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

Formats the value using the given formatter.