FileDescriptorEx.java 文件源码

private FileDescriptor getDeepCanonicalFileDescriptor(final FileDescriptor file,
    final boolean forceRebuild) throws DescriptorValidationException {
  if (!forceRebuild && isDeeplyCanonical(file)) {
    return file;
  }

  final FileDescriptor[] dependencies = new FileDescriptor[file.getDependencies().size()];
  int i = 0;

  for (final FileDescriptor dependency : file.getDependencies()) {
    dependencies[i++] = getDeepCanonicalFileDescriptor(dependency, forceRebuild);
  }

  final FileDescriptorProto proto = isCanonical(file) ? file.toProto() : makeCanonicalProto(file);
  return buildFileDescriptorWithReserializedProto(proto, dependencies);
}