src/tools/vppapigen/vppapigen_json.py

   1 # JSON generation
   2 import json
   3
   4 process_imports = True
   5
   6
   7 def walk_imports(s):
   8     r = []
   9     for e in s:
  10         r.append(str(e))
  11     return r
  12
  13
  14 def walk_counters(s, pathset):
  15     r = []
  16     for e in s:
  17         r2 = {"name": e.name, "elements": e.block}
  18         r.append(r2)
  19
  20     r3 = []
  21     for p in pathset:
  22         r3.append(p.paths)
  23
  24     return r, r3
  25
  26
  27 def walk_enums(s):
  28     r = []
  29     for e in s:
  30         d = []
  31         d.append(e.name)
  32         for b in e.block:
  33             d.append(b)
  34         d.append({"enumtype": e.enumtype})
  35         r.append(d)
  36     return r
  37
  38
  39 def walk_services(s):
  40     r = {}
  41     for e in s:
  42         d = {"reply": e.reply}
  43         if e.stream:
  44             d["stream"] = True
  45         if e.stream_message:
  46             d["stream_msg"] = e.stream_message
  47         if e.events:
  48             d["events"] = e.events
  49         r[e.caller] = d
  50     return r
  51
  52
  53 def walk_defs(s, is_message=False):
  54     r = []
  55     for t in s:
  56         d = []
  57         d.append(t.name)
  58         for b in t.block:
  59             if b.type == "Option":
  60                 continue
  61             if b.type == "Field":
  62                 if b.limit:
  63                     d.append([b.fieldtype, b.fieldname, b.limit])
  64                 else:
  65                     d.append([b.fieldtype, b.fieldname])
  66             elif b.type == "Array":
  67                 if b.lengthfield:
  68                     d.append([b.fieldtype, b.fieldname, b.length, b.lengthfield])
  69                 else:
  70                     d.append([b.fieldtype, b.fieldname, b.length])
  71             elif b.type == "Union":
  72                 pass
  73             else:
  74                 raise ValueError("Error in processing array type %s" % b)
  75
  76         if is_message and t.crc:
  77             c = {}
  78             c["crc"] = "{0:#0{1}x}".format(t.crc, 10)
  79             c["options"] = t.options
  80             d.append(c)
  81
  82         r.append(d)
  83     return r
  84
  85
  86 #
  87 # Plugin entry point
  88 #
  89 def run(output_dir, filename, s):
  90     j = {}
  91
  92     j["types"] = walk_defs([o for o in s["types"] if o.__class__.__name__ == "Typedef"])
  93     j["messages"] = walk_defs(s["Define"], True)
  94     j["unions"] = walk_defs([o for o in s["types"] if o.__class__.__name__ == "Union"])
  95     j["enums"] = walk_enums([o for o in s["types"] if o.__class__.__name__ == "Enum"])
  96     j["enumflags"] = walk_enums(
  97         [o for o in s["types"] if o.__class__.__name__ == "EnumFlag"]
  98     )
  99     j["services"] = walk_services(s["Service"])
 100     j["options"] = s["Option"]
 101     j["aliases"] = {
 102         o.name: o.alias for o in s["types"] if o.__class__.__name__ == "Using"
 103     }
 104     j["vl_api_version"] = hex(s["file_crc"])
 105     j["imports"] = walk_imports(i for i in s["Import"])
 106     j["counters"], j["paths"] = walk_counters(s["Counters"], s["Paths"])
 107     return json.dumps(j, indent=4, separators=(",", ": "))