ovsdb-idlc: Add "cDecls" and "hDecls" IDL schema extensions.

An IDL schema is an OVSDB schema with some extra stuff in it: an idlPrefix
and an idlHeader at the top level to indicate what ovsdb-idlc needs to
generate the interface definitions.  This commit adds support for two more
optional IDL schema extensions that allow extra code to be written to the
.c and .h file that ovsdb-idlc generates.

Signed-off-by: Ben Pfaff <blp@ovn.org>

1 files changed, 9 insertions, 2 deletions

diff --git a/python/ovs/db/schema.py b/python/ovs/db/schema.py
index b68c19e00..5f1f6c41a 100644
--- a/python/ovs/db/schema.py
+++ b/python/ovs/db/schema.py
@@ -125,24 +125,31 @@ class DbSchema(object):
 
 
 class IdlSchema(DbSchema):
-    def __init__(self, name, version, tables, idlPrefix, idlHeader):
+    def __init__(self, name, version, tables, idlPrefix, idlHeader,
+                 cDecls, hDecls):
         DbSchema.__init__(self, name, version, tables)
         self.idlPrefix = idlPrefix
         self.idlHeader = idlHeader
+        self.cDecls = cDecls
+        self.hDecls = hDecls
 
     @staticmethod
     def from_json(json):
         parser = ovs.db.parser.Parser(json, "IDL schema")
         idlPrefix = parser.get("idlPrefix", six.string_types)
         idlHeader = parser.get("idlHeader", six.string_types)
+        cDecls = parser.get_optional("cDecls", six.string_types, "")
+        hDecls = parser.get_optional("hDecls", six.string_types, "")
 
         subjson = dict(json)
         del subjson["idlPrefix"]
         del subjson["idlHeader"]
+        subjson.pop("cDecls", None)
+        subjson.pop("hDecls", None)
         schema = DbSchema.from_json(subjson)
 
         return IdlSchema(schema.name, schema.version, schema.tables,
-                         idlPrefix, idlHeader)
+                         idlPrefix, idlHeader, cDecls, hDecls)
 
 
 def column_set_from_json(json, columns):