Struct PointerOffset

pub struct PointerOffset<T: ?Sized>(pub usize, _);

Newtype around a pointer offset into a slice stream (&[T]/&str).

Tuple Fields

0: usize

Implementations

impl<T> PointerOffset<T>

where T: ?Sized,

pub fn new(offset: usize) -> Self

pub fn translate_position(self, initial_slice: &T) -> usize

Converts the pointer-based position into an indexed position.

let text = "b";
let err = token('a').easy_parse(text).unwrap_err();
assert_eq!(err.position.0, text.as_ptr() as usize);
assert_eq!(err.map_position(|p| p.translate_position(text)).position, 0);

Trait Implementations

impl<T: ?Sized> Clone for PointerOffset<T>

fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<T> Debug for PointerOffset<T>

where T: ?Sized,

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

Formats the value using the given formatter.

impl<T: ?Sized> Default for PointerOffset<T>

fn default() -> Self

Returns the “default value” for a type.

impl<T> Display for PointerOffset<T>

where T: ?Sized,

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

Formats the value using the given formatter.

impl<T: ?Sized> Ord for PointerOffset<T>

fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl<T: ?Sized> PartialEq for PointerOffset<T>

fn eq(&self, other: &Self) -> 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<T: ?Sized> PartialOrd for PointerOffset<T>

fn partial_cmp(&self, other: &Self) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl<T: ?Sized> Copy for PointerOffset<T>

impl<T: ?Sized> Eq for PointerOffset<T>