Method push

crates/core/src/source.rs:12–21

(&mut self, name: &str, contents: &[u8])

impl Files {
    pub fn push(&mut self, name: &str, contents: &[u8]) {
        match self.files.entry(name.to_owned()) {
            Entry::Vacant(entry) => {
                entry.insert(contents.to_owned());
            }
            Entry::Occupied(ref mut entry) => {
                entry.get_mut().extend_from_slice(contents);
            }
        }
    }

    pub fn get_size(&mut self, name: &str) -> Option<usize> {
        self.files.get(name).map(|data| data.len())