[Qemu-devel] [PATCH RFC 05/10] qapi script: use same function to generate enum string

[Wenchao Xia]

One function one rule, so the enum string generating have same
behavior for different caller. If multiple caller exist for one
enum define in schema, it is for sure the generated string is
identical.

Note before the patch qapi-visit.py used custom function to
generate the string in union visit, although the patch changes it,
the final string generated is not changed. The custom function used
before will met problem when capitalized discriminator value is
introduced.

Signed-off-by: Wenchao Xia <address@hidden>
---
 scripts/qapi-types.py |    6 +++---
 scripts/qapi-visit.py |    8 +++++---
 scripts/qapi.py       |   15 +++++++++++----
 3 files changed, 19 insertions(+), 10 deletions(-)

diff --git a/scripts/qapi-types.py b/scripts/qapi-types.py
index 88bf76a..914f055 100644
--- a/scripts/qapi-types.py
+++ b/scripts/qapi-types.py
@@ -144,11 +144,11 @@ typedef enum %(name)s
 
     i = 0
     for value in enum_values:
+        enum_full_value_string = generate_enum_full_value_string(name, value)
         enum_decl += mcgen('''
-    %(abbrev)s_%(value)s = %(i)d,
+    %(enum_full_value_string)s = %(i)d,
 ''',
-                     abbrev=de_camel_case(name).upper(),
-                     value=generate_enum_name(value),
+                     enum_full_value_string=enum_full_value_string,
                      i=i)
         i += 1
 
diff --git a/scripts/qapi-visit.py b/scripts/qapi-visit.py
index 803d3eb..9fc7c4c 100644
--- a/scripts/qapi-visit.py
+++ b/scripts/qapi-visit.py
@@ -261,6 +261,7 @@ def generate_visit_union(expr):
                 sys.exit(1)
 
     ret = generate_visit_enum('%sKind' % name, members.keys())
+    discriminator_type_name = '%sKind' % (name)
 
     if base:
         base_fields = find_struct(base)['data']
@@ -313,13 +314,14 @@ void visit_type_%(name)s(Visitor *m, %(name)s ** obj, 
const char *name, Error **
                     visit_end_implicit_struct(m, &err);
                 }'''
 
+        enum_full_value_string = \
+                  generate_enum_full_value_string(discriminator_type_name, key)
         ret += mcgen('''
-            case %(abbrev)s_KIND_%(enum)s:
+            case %(enum_full_value_string)s:
                 ''' + fmt + '''
                 break;
 ''',
-                abbrev = de_camel_case(name).upper(),
-                enum = c_fun(de_camel_case(key),False).upper(),
+                enum_full_value_string = enum_full_value_string,
                 c_type=type_name(members[key]),
                 c_name=c_fun(key))
 
diff --git a/scripts/qapi.py b/scripts/qapi.py
index 9e2dd70..43a3720 100644
--- a/scripts/qapi.py
+++ b/scripts/qapi.py
@@ -417,12 +417,19 @@ def descriminator_find_enum_define(expr):
 
     return find_enum(descriminator_type)
 
-def generate_enum_name(name):
-    if name.isupper():
-        return c_fun(name, False)
+def _generate_enum_value_string(value):
+    if value.isupper():
+        return c_fun(value, False)
     new_name = ''
-    for c in c_fun(name, False):
+    for c in c_fun(value, False):
         if c.isupper():
             new_name += '_'
         new_name += c
     return new_name.lstrip('_').upper()
+
+def generate_enum_full_value_string(enum_name, enum_value):
+    # generate abbrev string
+    abbrev_string = de_camel_case(enum_name).upper()
+    # generate value string
+    value_string = _generate_enum_value_string(enum_value)
+    return "%s_%s" % (abbrev_string, value_string)
-- 
1.7.1