use std::error::Error;

#[derive(Debug, Clone, Copy)]
pub struct Location<'a> {
	pub line: usize,
	pub col: usize,
	pub file: Option<&'a str>,
}

#[derive(Debug, Clone)]
pub struct OwnedLocation {
	pub line: usize,
	pub col: usize,
	pub file: Option<String>,
}

impl<'a> From<Location<'a>> for OwnedLocation {
	fn from(l: Location<'a>) -> OwnedLocation {
		OwnedLocation {
			line: l.line,
			col: l.col,
			file: l.file.map(|v| v.to_string()),
		}
	}
}

impl<'a> From<&'a OwnedLocation> for Location<'a> {
	fn from(l: &'a OwnedLocation) -> Location<'a> {
		Location {
			line: l.line,
			col: l.col,
			file: l.file.as_ref().map(|v| v.as_str()),
		}
	}
}

pub trait ErrorWithLocation: Error {
	fn get_location(&self) -> Location;
}