You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: parse_path.m
    path of file: ./repos/gptoolbox/mesh
    
    the code of the file until where you have to start completion: function [P,C,state] = parse_path(dstr,varargin)
  % [P,C] = parse_path(dstr)
  %
  % Inputs:
  %   dstr  string of the value of the 'd' attribute
  % Outputs:
  %   P  #P by 2 list of control point locations
  %   C  #C by 4 list of indices into P of cubics
  %   state
  %
  % Known issues:
  %   This implementation is surely O(#dst
    
function [state,pos] = parse_A(state,dstr,pos)
    [rx, pos] = parse_x(dstr,pos);
    [ry, pos] = parse_x(dstr,pos);
    [phi,pos] = parse_x(dstr,pos);
    % it seems valid for the flags to appear immediately adjacent to each
    % other like '10' or '11' which should be read as '1 0' and '1 1' rather
    % than 10→1 and 11→1
    % 
    % Another file ('222268.svg') appeared to use '1,11' to mean '1 1' but I
    % can't think of a way to correctly handle both uses.
    [large_arc,pos] = parse_flag(dstr,pos);
    [sweep,pos] = parse_flag(dstr,pos);
    [Pnext,pos] = parse_xy(dstr,pos);
    if isempty(Pnext)
      error('parse_path: wrong number of args for A,a');
    end