Function scanPythonGetattr

src/mcp/dynamic-boundaries.ts:327–371

(stripped: string, original: string, fileStartLine: number, out: BoundaryMatch[], seen: Map<string, BoundaryMatch>)

const MAX_GETATTR_ARGS = 300;

function scanPythonGetattr(stripped: string, original: string, fileStartLine: number, out: BoundaryMatch[], seen: Map<string, BoundaryMatch>): void {
  GETATTR_RE.lastIndex = 0;
  let m: RegExpExecArray | null;
  while ((m = GETATTR_RE.exec(stripped)) !== null && out.length < MAX_MATCHES_PER_BODY) {
    const open = m.index + m[0].length - 1;
    const close = matchBalancedParen(stripped, open);
    if (close === -1) continue;

    let form: string | undefined;
    let label = '';
    // Immediate call: getattr(...)(
    const after = stripped.slice(close + 1, close + 8);
    if (/^\s*\(/.test(after)) {
      form = 'getattr-call';
      label = 'getattr dispatch';
    } else {
      // Assigned form: look back for `name =` and forward for `name(`.
      const lineStart = stripped.lastIndexOf('\n', m.index) + 1;
      const before = stripped.slice(lineStart, m.index);
      const assign = before.match(/(\w+)\s*=\s*$/);
      if (assign && new RegExp(`\\b${assign[1]}\\s*\\(`).test(stripped.slice(close + 1))) {
        form = 'getattr-assign';
        label = 'getattr dispatch (assigned, called later)';
      }
    }
    if (!form) continue;

    const key = singleStringLiteral(original.slice(open + 1, close));
    const dedupeKey = `${form}|${key ?? ''}`;
    const prior = seen.get(dedupeKey);
    if (prior) {
      prior.moreSites = (prior.moreSites ?? 0) + 1;
      continue;
    }
    const match: BoundaryMatch = {
      form,
      label,
      snippet: snippetAround(original, m.index),
      line: fileStartLine + countNewlines(original, m.index),
      ...(key ? { key } : {}),
    };
    seen.set(dedupeKey, match);
    out.push(match);
  }
}

/** Index of the `)` balancing `text[open]`, or -1 (cap: MAX_GETATTR_ARGS chars). */
function matchBalancedParen(text: string, open: number): number {