Function resolveInclude

src/resolution/cpp-macro-visibility.ts:212–246

(
  file: string,
  quote: string,
  spec: string,
  language: UnresolvedRef['language'],
  context: ResolutionContext,
  cache: Cache
)

}

function resolveInclude(
  file: string,
  quote: string,
  spec: string,
  language: UnresolvedRef['language'],
  context: ResolutionContext,
  cache: Cache
): string | null {
  const key = `${language}\0${file}\0${quote}${spec}`;
  const cached = cache.includes.get(key);
  if (cached !== undefined) return cached;
  const local = path.posix.normalize(path.posix.join(path.posix.dirname(file), spec.replace(/\\/g, '/')));
  let target =
    quote === '"' && !local.startsWith('../') && !path.posix.isAbsolute(local) && context.fileExists(local)
      ? local
      : resolveImportPath(spec, file, language, context);
  if (!target) {
    if (!cache.byBasename) {
      cache.byBasename = new Map();
      for (const f of context.getAllFiles()) {
        const base = f.slice(f.lastIndexOf('/') + 1);
        const list = cache.byBasename.get(base);
        if (list) list.push(f);
        else cache.byBasename.set(base, [f]);
      }
    }
    const normalized = spec.replace(/\\/g, '/');
    const matches = (cache.byBasename.get(normalized.slice(normalized.lastIndexOf('/') + 1)) ?? []).filter(
      (f) => f === normalized || f.endsWith('/' + normalized)
    );
    if (matches.length === 1) target = matches[0]!;
  }
  cache.includes.set(key, target);
  return target;
}

function walkTranslationUnit(
  rootFile: string,