API: Add support for type aliases

Previously all types are compound. This adds support for aliases,
so one can do things like:

typedef u32 interface_index;

or
typedef u8 ip4_address[4];

Change-Id: I0455cad0123fc88acb491d2a3ea2725426bdb246
Signed-off-by: Ole Troan <ot@cisco.com>
Signed-off-by: Klement Sekera <ksekera@cisco.com>

1 files changed, 11 insertions, 2 deletions

diff --git a/src/tools/vppapigen/vppapigen_c.py b/src/tools/vppapigen/vppapigen_c.py
index b56e0722122..2a66ff3159e 100644
--- a/src/tools/vppapigen/vppapigen_c.py
+++ b/src/tools/vppapigen/vppapigen_c.py
@@ -94,7 +94,7 @@ def duplicate_wrapper_tail():
     return '#endif\n\n'
 
 
-def typedefs(objs, filename):
+def typedefs(objs, aliases, filename):
     name = filename.replace('.', '_')
     output = '''\
 
@@ -106,6 +106,15 @@ def typedefs(objs, filename):
 #define included_{module}
 '''
     output = output.format(module=name)
+
+    for k, v in aliases.items():
+        output += duplicate_wrapper_head(k)
+        if 'length' in v:
+            output +=  'typedef %s vl_api_%s_t[%s];\n' % (v['type'], k, v['length'])
+        else:
+            output += 'typedef %s vl_api_%s_t;\n' % (v['type'], k)
+        output += duplicate_wrapper_tail()
+
     for o in objs:
         tname = o.__class__.__name__
         output += duplicate_wrapper_head(o.name)
@@ -276,7 +285,7 @@ def run(input_filename, s, file_crc):
     output += msg_ids(s)
     output += msg_names(s)
     output += msg_name_crc_list(s, filename)
-    output += typedefs(s['types'] + s['Define'], filename + file_extension)
+    output += typedefs(s['types'] + s['Define'], s['Alias'], filename + file_extension)
     output += printfun(s['types'] + s['Define'])
     output += endianfun(s['types'] + s['Define'])
     output += version_tuple(s, basename)