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-rw-r--r--src/tools/vppapigen/JSON.py66
1 files changed, 66 insertions, 0 deletions
diff --git a/src/tools/vppapigen/JSON.py b/src/tools/vppapigen/JSON.py
new file mode 100644
index 00000000000..d1f47ebc560
--- /dev/null
+++ b/src/tools/vppapigen/JSON.py
@@ -0,0 +1,66 @@
+# JSON generation
+import json
+
+
+def walk_enums(s):
+ r = []
+ for e in s:
+ d = []
+ d.append(e.name)
+ for b in e.block:
+ d.append(b)
+ d.append({'enumtype': e.enumtype})
+ r.append(d)
+ return r
+
+
+def walk_services(s):
+ r = []
+ for e in s:
+ d = {'reply': e.reply}
+ if e.stream:
+ d['stream'] = True
+ if e.events:
+ d['events'] = e.events
+ r.append({e.caller: d})
+ return r
+
+
+def walk_defs(s):
+ r = []
+ for t in s:
+ d = []
+ d.append(t.name)
+ for b in t.block:
+ f = []
+ if b.type == 'Field':
+ f = [b.fieldtype, b.fieldname]
+ elif b.type == 'Array':
+ if b.lengthfield:
+ f = [b.fieldtype, b.fieldname, b.length, b.lengthfield]
+ else:
+ f = [b.fieldtype, b.fieldname, b.length]
+ else:
+ raise ValueError("Error in processing array type %s" % b)
+ d.append(f)
+ if t.crc:
+ c = {}
+ c['crc'] = "{0:#0{1}x}".format(t.crc, 10)
+ d.append(c)
+
+ r.append(d)
+ return r
+
+
+#
+# Plugin entry point
+#
+def run(filename, s, file_crc):
+ j = {}
+
+ j['types'] = walk_defs(s['typedefs'])
+ j['messages'] = walk_defs(s['defines'])
+ j['enums'] = walk_enums(s['enums'])
+ j['services'] = walk_services(s['services'])
+ j['vl_api_version'] = hex(file_crc)
+ return json.dumps(j, indent=4, separators=(',', ': '))