Method expect_and_consume_with_pos

core/src/parser.rs:288–300

Expects the peeked token to be `t` and consumes it. Otherwise, leaves the token in the stream and fails with error `err`, pointing at `pos` as the original location of the problem.

(
        &mut self,
        t: Token,
        pos: LineCol,
        err: E,
    )

    /// stream and fails with error `err`, pointing at `pos` as the original location of the
    /// problem.
    fn expect_and_consume_with_pos<E: Into<String>>(
        &mut self,
        t: Token,
        pos: LineCol,
        err: E,
    ) -> Result<()> {
        let peeked = self.lexer.peek()?;
        if peeked.token != t {
            return Err(Error::Bad(pos, err.into()));
        }
        self.lexer.consume_peeked();
        Ok(())
    }

    /// Reads statements until the `delim` keyword is found.  The delimiter is not consumed.
    fn parse_until(&mut self, delim: Token) -> Result<Vec<Statement>> {