Struct Loc

pub struct Loc {
    pub line: isize,
    pub col: isize,
    pub pos: isize,
    pub source: Rc<Source>,
}

Loc(line, col, pos, source) is a location referring to line line and column col of source, where the combination of line and col produces a direct offset pos. It is formatted as "{source}:{line}:{col}" where {source} is the formatted substitution of source and likewise for line/col. It is required that no numeric field is negative, that is, line, col, and pos should be treated as if they were of type usize.

Fields

line: isize

col: isize

pos: isize

source: Rc<Source>

Implementations

impl Loc

pub fn lines(&self, before: usize, after: usize) -> (Vec<String>, usize)

loc.lines(before, after) is a pair of a vector containing the line in loc.source at position loc.pos, preceded by the up to before previous lines and up to after subsequent lines, as well as an index into the vector for the line containing loc.pos.

Requires: loc.pos is a valid position in loc.source.

pub fn make_invalid() -> Self

pub fn is_invalid(&self) -> bool

Trait Implementations

impl Clone for Loc

fn clone(&self) -> Loc

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Loc

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

Formats the value using the given formatter.

impl Default for Loc

fn default() -> Self

Returns the “default value” for a type.

impl Display for Loc

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

Formats the value using the given formatter.

impl PartialEq for Loc

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 PartialOrd for Loc

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 Eq for Loc