qapi: do not protect enum values from namespace pollution

Enum values are always preceded by the uppercase name of the enum, so
they do not conflict with reserved words.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>

scripts/qapi-types.py

@@ -91,9 +91,9 @@ const char *%(name)s_lookup[] = {
 
 def generate_enum_name(name):
     if name.isupper():
-        return c_fun(name)
+        return c_fun(name, False)
     new_name = ''
-    for c in c_fun(name):
+    for c in c_fun(name, False):
         if c.isupper():
             new_name += '_'
         new_name += c

scripts/qapi-visit.py

@@ -173,7 +173,7 @@ void visit_type_%(name)s(Visitor *m, %(name)s ** obj, const char *name, Error **
                 break;
 ''',
                 abbrev = de_camel_case(name).upper(),
-                enum = c_fun(de_camel_case(key)).upper(),
+                enum = c_fun(de_camel_case(key),False).upper(),
                 c_type=members[key],
                 c_name=c_fun(key))
 

scripts/qapi.py

@@ -141,7 +141,7 @@ def camel_case(name):
             new_name += ch.lower()
     return new_name
 
-def c_var(name):
+def c_var(name, protect=True):
     # ANSI X3J11/88-090, 3.1.1
     c89_words = set(['auto', 'break', 'case', 'char', 'const', 'continue',
                      'default', 'do', 'double', 'else', 'enum', 'extern', 'float',
@@ -156,12 +156,12 @@ def c_var(name):
     # GCC http://gcc.gnu.org/onlinedocs/gcc-4.7.1/gcc/C-Extensions.html
     # excluding _.*
     gcc_words = set(['asm', 'typeof'])
-    if name in c89_words | c99_words | c11_words | gcc_words:
+    if protect and (name in c89_words | c99_words | c11_words | gcc_words):
         return "q_" + name
     return name.replace('-', '_').lstrip("*")
 
-def c_fun(name):
-    return c_var(name).replace('.', '_')
+def c_fun(name, protect=True):
+    return c_var(name, protect).replace('.', '_')
 
 def c_list_type(name):
     return '%sList' % name