src/tools/vppapigen/vppapigen_json.py

   1 # JSON generation
   2 import json
   3
   4
   5 def walk_enums(s):
   6     r = []
   7     for e in s:
   8         d = []
   9         d.append(e.name)
  10         for b in e.block:
  11             d.append(b)
  12         d.append({'enumtype': e.enumtype})
  13         r.append(d)
  14     return r
  15
  16
  17 def walk_services(s):
  18     r = {}
  19     for e in s:
  20         d = {'reply': e.reply}
  21         if e.stream:
  22             d['stream'] = True
  23         if e.events:
  24             d['events'] = e.events
  25         r[e.caller] = d
  26     return r
  27
  28
  29 def walk_defs(s):
  30     r = []
  31     for t in s:
  32         d = []
  33         d.append(t.name)
  34         for b in t.block:
  35             if b.type == 'Field':
  36                 d.append([b.fieldtype, b.fieldname])
  37             elif b.type == 'Array':
  38                 if b.lengthfield:
  39                     d.append([b.fieldtype, b.fieldname, b.length, b.lengthfield])
  40                 else:
  41                     d.append([b.fieldtype, b.fieldname, b.length])
  42             elif b.type == 'Union':
  43                 pass
  44             else:
  45                 raise ValueError("Error in processing array type %s" % b)
  46
  47         if t.crc:
  48             c = {}
  49             c['crc'] = "{0:#0{1}x}".format(t.crc, 10)
  50             d.append(c)
  51
  52         r.append(d)
  53     return r
  54
  55
  56 #
  57 # Plugin entry point
  58 #
  59 def run(filename, s, file_crc):
  60     j = {}
  61
  62     j['types'] = walk_defs([o for o in s['types'] if o.__class__.__name__ == 'Typedef'])
  63     j['messages'] = walk_defs(s['Define'])
  64     j['unions'] = walk_defs([o for o in s['types'] if o.__class__.__name__ == 'Union'])
  65     j['enums'] = walk_enums([o for o in s['types'] if o.__class__.__name__ == 'Enum'])
  66     j['services'] = walk_services(s['Service'])
  67     j['aliases'] = s['Alias']
  68     j['vl_api_version'] = hex(file_crc)
  69     return json.dumps(j, indent=4, separators=(',', ': '))