Function parse_manifest

compiler/src/modules/packages/manifest.rs:15–43

Parse `{ "imports": {...}, "extends": "..." }`. Both optional; unknown keys skipped for forward compat; numbers, arrays, bools rejected. */

(bytes: &[u8])

/* Parse `{ "imports": {...}, "extends": "..." }`. Both optional; unknown keys skipped for forward compat; numbers, arrays, bools rejected. */
pub fn parse_manifest(bytes: &[u8]) -> Result<Manifest, String> {
    let src = core::str::from_utf8(bytes).map_err(|_| s!("packages.json is not valid UTF-8"))?;
    let mut p = Reader { src: src.as_bytes(), pos: 0 };
    let mut m = Manifest { imports: Vec::new(), extends: None };

    p.skip_ws();
    p.expect(b'{', "packages.json must be a JSON object")?;
    p.skip_ws();
    if p.peek() == Some(b'}') { return Ok(m); }

    loop {
        p.skip_ws();
        let key = p.read_string()?;
        p.skip_ws();
        p.expect(b':', "expected ':' after key in packages.json")?;
        p.skip_ws();
        match key.as_str() {
            "imports" => p.read_imports_into(&mut m.imports)?,
            "extends" => m.extends = Some(p.read_string()?),
            _ => p.skip_value()?,
        }
        p.skip_ws();
        match p.peek() {
            Some(b',') => { p.pos += 1; continue; }
            Some(b'}') => return Ok(m),
            _ => return Err(s!("expected ',' or '}' in packages.json")),
        }
    }
}

/* Yield the directory of `start` and every parent, in order. Each ends in '/' or is "" (topmost). */
pub fn walk_up_dirs(start: &str) -> impl Iterator<Item = String> + '_ {