use super::common::{Range};
#[derive(Debug, PartialEq)]
pub struct ParseError {
pub range: Range,
pub message: String,
}
impl ParseError {
pub(super) fn new(range: Range, message: &str) -> ParseError {
ParseError {
range,
message: String::from(message),
}
}
pub fn get_message_with_range(&self, file_text: &str) -> String {
return format!(
"{} on line {} column {}.",
self.message,
self.range.start_line + 1,
get_column_number(self.range.start, file_text) + 1,
);
fn get_column_number(pos: usize, file_text: &str) -> usize {
let mut column_number = 0;
for (indice, c) in file_text.char_indices() {
if c == '\n' {
column_number = 0;
} else if indice >= pos {
break;
} else {
column_number += 1;
}
}
column_number
}
}
}