Function render_error

src/sql-parser/src/lib.rs:52–68

(sql: &str, e: parser::ParserError)

    use unicode_width::UnicodeWidthStr;

    fn render_error(sql: &str, e: parser::ParserError) -> String {
        let mut s = format!("error: {}\n", e.message);

        // Do our best to emulate psql in rendering a caret pointing at the
        // offending character in the query. This makes it possible to detect
        // incorrect error positions by visually scanning the test files.
        let end = sql.len();
        let line_start = sql[..e.pos].rfind('\n').map(|p| p + 1).unwrap_or(0);
        let line_end = sql[e.pos..].find('\n').map(|p| e.pos + p).unwrap_or(end);
        writeln!(s, "{}", &sql[line_start..line_end]);
        for _ in 0..sql[line_start..e.pos].width() {
            write!(s, " ");
        }
        writeln!(s, "^");

        s
    }

    fn parse_statement(tc: &TestCase) -> String {
        let input = tc.input.strip_suffix('\n').unwrap_or(&tc.input);