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                 if b.limit:
  37                     d.append([b.fieldtype, b.fieldname, b.limit])
  38                 else:
  39                     d.append([b.fieldtype, b.fieldname])
  40             elif b.type == 'Array':
  41                 if b.lengthfield:
  42                     d.append([b.fieldtype, b.fieldname, b.length, b.lengthfield])
  43                 else:
  44                     d.append([b.fieldtype, b.fieldname, b.length])
  45             elif b.type == 'Union':
  46                 pass
  47             else:
  48                 raise ValueError("Error in processing array type %s" % b)
  49
  50         if t.crc:
  51             c = {}
  52             c['crc'] = "{0:#0{1}x}".format(t.crc, 10)
  53             d.append(c)
  54
  55         r.append(d)
  56     return r
  57
  58
  59 #
  60 # Plugin entry point
  61 #
  62 def run(filename, s, file_crc):
  63     j = {}
  64
  65     j['types'] = walk_defs([o for o in s['types'] if o.__class__.__name__ == 'Typedef'])
  66     j['messages'] = walk_defs(s['Define'])
  67     j['unions'] = walk_defs([o for o in s['types'] if o.__class__.__name__ == 'Union'])
  68     j['enums'] = walk_enums([o for o in s['types'] if o.__class__.__name__ == 'Enum'])
  69     j['services'] = walk_services(s['Service'])
  70     j['options'] = s['Option']
  71     j['aliases'] = s['Alias']
  72     j['vl_api_version'] = hex(file_crc)
  73     return json.dumps(j, indent=4, separators=(',', ': '))