Struct Position 

pub struct Position {
    pub start: u32,
    pub end: u32,
}

A position or span of text in the source code.

Fields

start: u32

The starting index of the position, byte-wise. This is inclusive.

end: u32

The ending index of the position, byte-wise. This is exclusive.

Implementations

impl Position

pub fn new(start: usize, end: usize) -> Self

Creates a new position from a start and end index.

pub fn starting_char(&self) -> usize

Returns the starting index of the position.

pub fn ending_char(&self) -> usize

Returns the ending index of the position. Note that this is exclusive, so self.end - 1 is the last index of the position.

pub fn join(&self, other: &Self) -> Self

Joins two positions together.

pub fn len(&self) -> usize

Returns the length of the position.

pub fn is_empty(&self) -> bool

Returns whether or not the position is empty (i.e., the start and end are the same). This means that the position is an EOF.

Trait Implementations

impl Clone for Position

fn clone(&self) -> Position

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Position

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

Formats the value using the given formatter.

impl From<(usize, usize)> for Position

Creates a position from a start and end index.

fn from((start, end): (usize, usize)) -> Self

Converts to this type from the input type.

impl From<Position> for SourceSpan

Creates a miette::SourceSpan from a Position.

fn from(val: Position) -> Self

Converts to this type from the input type.

impl From<usize> for Position

Creates a position from a start index.

fn from(start: usize) -> Self

Converts to this type from the input type.

impl PartialEq for Position

fn eq(&self, other: &Position) -> 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 Copy for Position

impl Eq for Position

impl StructuralPartialEq for Position