Struct Position 

pub struct Position {
    pub byte: usize,
    pub line: u32,
    pub column: u32,
}

A position in a source file with byte offset, line, and column

This is an engine type for internal parsing use. It tracks byte offsets and 1-based line/column for human-friendly display.

Fields

byte: usize

Byte offset in the source (0-based)

line: u32

Line number (1-based for user display)

column: u32

Column number (1-based for user display)

Implementations

impl Position

pub fn new(byte: usize, line: u32, column: u32) -> Position

Create a new position

pub fn start() -> Position

Create a position at the start of a file

pub fn advance(&mut self, text: &str)

Advance the position by the given text

pub fn advance_char(&mut self, ch: char)

Advance by a single character

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<(), Error>

Formats the value using the given formatter.

impl Default for Position

fn default() -> Position

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Position

fn deserialize<__D>( __deserializer: __D, ) -> Result<Position, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for Position

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

Formats the value using the given formatter.

impl Hash for Position

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

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 Serialize for Position

fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for Position

impl Eq for Position

impl StructuralPartialEq for Position