Function resolveCobolCopybook

src/resolution/import-resolver.ts:212–251

(
  member: string,
  fromFile: string,
  context: ResolutionContext
)

}

function resolveCobolCopybook(
  member: string,
  fromFile: string,
  context: ResolutionContext
): string | null {
  let index = cobolCopybookIndexes.get(context);
  if (!index) {
    index = new Map();
    for (const fileNode of context.getNodesByKind('file')) {
      const normalized = fileNode.filePath.replace(/\\/g, '/');
      const base = normalized.split('/').pop() ?? '';
      const dot = base.lastIndexOf('.');
      const stem = (dot > 0 ? base.slice(0, dot) : base).toLowerCase();
      const paths = index.get(stem);
      if (paths) paths.push(fileNode.filePath);
      else index.set(stem, [fileNode.filePath]);
    }
    cobolCopybookIndexes.set(context, index);
  }

  const candidates = index.get(member.toLowerCase());
  if (!candidates || candidates.length === 0) return null;

  const fromDir = fromFile.replace(/\\/g, '/').split('/').slice(0, -1).join('/');
  let best: string | null = null;
  let bestScore = -1;
  for (const candidate of candidates) {
    const normalized = candidate.replace(/\\/g, '/');
    const ext = normalized.slice(normalized.lastIndexOf('.')).toLowerCase();
    let score = 0;
    if (ext === '.cpy') score += 4;
    else if (ext === '.cbl' || ext === '.cob' || ext === '.cobol') score += 2;
    if (normalized.split('/').slice(0, -1).join('/') === fromDir) score += 1;
    if (score > bestScore) {
      bestScore = score;
      best = candidate;
    }
  }
  return best;
}

/**
 * C and C++ standard library header names (without delimiters).