[PATCH RFC V2 07/10] libxl/gentypes.py: generate JSON object for keyed-union discriminator

[Wei Liu <wei.liu2@citrix.com>]

Parser relies on the discriminator to go to correct branch.

Signed-off-by: Wei Liu <wei.liu2@citrix.com>
---
 tools/libxl/gentypes.py |    5 +++++
 1 file changed, 5 insertions(+)

diff --git a/tools/libxl/gentypes.py b/tools/libxl/gentypes.py
index 61a2b3d..8d7183a 100644
--- a/tools/libxl/gentypes.py
+++ b/tools/libxl/gentypes.py
@@ -229,6 +229,11 @@ def libxl_C_type_gen_json(ty, v, indent = "    ", parent = None):
                 s += "        goto out;\n"
             s += "    break;\n"
         s += "}\n"
+        s += "s = yajl_gen_string(hand, (const unsigned char *)\"%s\", sizeof(\"%s\")-1);\n" \
+             % (ty.keyvar.name, ty.keyvar.name)
+        s += "if (s != yajl_gen_status_ok)\n"
+        s += "    goto out;\n"
+        s += libxl_C_type_gen_json(ty.keyvar.type, (parent + ty.keyvar.name), indent, parent)
     elif isinstance(ty, idl.Struct) and (parent is None or ty.json_gen_fn is None):
         s += "s = yajl_gen_map_open(hand);\n"
         s += "if (s != yajl_gen_status_ok)\n"
-- 
1.7.10.4