Function git_config::parse::from_bytes

source · 
pub fn from_bytes<'a>(
    input: &'a [u8],
    dispatch: impl FnMut(Event<'a>)
) -> Result<(), Error>
Expand description

Attempt to zero-copy parse the provided bytes, passing results to dispatch.

Examples found in repository?
src/parse/events.rs (lines 298-322)
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fn from_bytes<'a, 'b>(
    input: &'a [u8],
    convert: impl Fn(Event<'a>) -> Event<'b>,
    filter: Option<fn(&Event<'a>) -> bool>,
) -> Result<Events<'b>, parse::Error> {
    let mut header = None;
    let mut events = section::Events::default();
    let mut frontmatter = FrontMatterEvents::default();
    let mut sections = Vec::new();
    parse::from_bytes(input, |e: Event<'_>| match e {
        Event::SectionHeader(next_header) => {
            match header.take() {
                None => {
                    frontmatter = std::mem::take(&mut events).into_iter().collect();
                }
                Some(prev_header) => {
                    sections.push(parse::Section {
                        header: prev_header,
                        events: std::mem::take(&mut events),
                    });
                }
            };
            header = match convert(Event::SectionHeader(next_header)) {
                Event::SectionHeader(h) => h,
                _ => unreachable!("BUG: convert must not change the event type, just the lifetime"),
            }
            .into();
        }
        event => {
            if filter.map_or(true, |f| f(&event)) {
                events.push(convert(event))
            }
        }
    })?;

    match header {
        None => {
            frontmatter = events.into_iter().collect();
        }
        Some(prev_header) => {
            sections.push(parse::Section {
                header: prev_header,
                events: std::mem::take(&mut events),
            });
        }
    }
    Ok(Events { frontmatter, sections })
}