Function load_fields_from_file

deps/v8/tools/gen-postmortem-metadata.py:881–936

(filename)

def load_fields_from_file(filename):
  inlfile = io.open(filename, 'r', encoding='utf-8');

  #
  # Each class's fields and the corresponding offsets are described in the
  # source by calls to macros like "ACCESSORS" (and friends).  All we do
  # here is extract these macro invocations, taking into account that they
  # may span multiple lines and may contain nested parentheses.  We also
  # call parse_field() to pick apart the invocation.
  #
  prefixes = [
      'ACCESSORS', 'ACCESSORS2', 'ACCESSORS_GCSAFE', 'SMI_ACCESSORS',
      'ACCESSORS_TO_SMI', 'RELEASE_ACQUIRE_ACCESSORS'
  ]
  prefixes += ([prefix + "_CHECKED" for prefix in prefixes] +
               [prefix + "_CHECKED2" for prefix in prefixes])
  current = ''
  opens = 0

  for line in inlfile:
    if (opens > 0):
      # Continuation line
      for ii in range(0, len(line)):
        if (line[ii] == '('):
          opens += 1;
        elif (line[ii] == ')'):
          opens -= 1;

        if (opens == 0):
          break;

      current += line[0:ii + 1];
      continue;

    for prefix in prefixes:
      if (not line.startswith(prefix + '(')):
        continue;

      if (len(current) > 0):
        fields.append(parse_field(current));
        current = '';

      for ii in range(len(prefix), len(line)):
        if (line[ii] == '('):
          opens += 1;
        elif (line[ii] == ')'):
          opens -= 1;

        if (opens == 0):
          break;

      current += line[0:ii + 1];

  if (len(current) > 0):
    fields.append(parse_field(current));
    current = '';

#