use super::{Context, Error, Parse, Parser};
use decoded_char::DecodedChar;
#[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash, Debug)]
pub enum StartFragment {
Empty,
NonEmpty,
}
impl Parse for StartFragment {
fn parse_in<C, E>(
parser: &mut Parser<C, E>,
_context: Context,
) -> Result<(Self, usize), Error<E>>
where
C: Iterator<Item = Result<DecodedChar, E>>,
{
let i = parser.begin_fragment();
match parser.next_char()? {
(_, Some('[')) => {
parser.skip_whitespaces()?;
match parser.peek_char()? {
Some(']') => {
parser.next_char()?;
parser.end_fragment(i);
Ok((StartFragment::Empty, i))
}
_ => {
Ok((StartFragment::NonEmpty, i))
}
}
}
(p, unexpected) => Err(Error::unexpected(p, unexpected)),
}
}
}
#[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash, Debug)]
pub enum ContinueFragment {
Item,
End,
}
impl ContinueFragment {
pub fn parse_in<C, E>(parser: &mut Parser<C, E>, array: usize) -> Result<Self, Error<E>>
where
C: Iterator<Item = Result<DecodedChar, E>>,
{
parser.skip_whitespaces()?;
match parser.next_char()? {
(_, Some(',')) => Ok(Self::Item),
(_, Some(']')) => {
parser.end_fragment(array);
Ok(Self::End)
}
(p, unexpected) => Err(Error::unexpected(p, unexpected)),
}
}
}