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location.rs
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44 lines (35 loc) · 847 Bytes
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//! Datatypes to support source location information.
use std::fmt;
/// A location somewhere in the sourcecode.
#[derive(Clone, Debug, Default, PartialEq)]
pub struct Location {
row: usize,
column: usize,
}
impl fmt::Display for Location {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "line {} column {}", self.row, self.column)
}
}
impl Location {
pub fn new(row: usize, column: usize) -> Self {
Location { row, column }
}
pub fn row(&self) -> usize {
self.row
}
pub fn column(&self) -> usize {
self.column
}
pub fn reset(&mut self) {
self.row = 1;
self.column = 1;
}
pub fn go_right(&mut self) {
self.column += 1;
}
pub fn newline(&mut self) {
self.row += 1;
self.column = 1;
}
}