shiboken: Store null enum values

If an enum has a null value, store that on the EnumTypeEntry for
use in Generator::minimalConstructor() as a default value.
Fully qualify scoped enum value type entries for this purpose.

The value can then be used for default values instead of an ugly
static_cast<EnumType>(0).

Task-number: PYSIDE-62
Change-Id: I42cb2ca63fb1da6c795df630ab30bded66aac901
Reviewed-by: Christian Tismer <tismer@stackless.com>

1 files changed, 12 insertions, 2 deletions

diff --git a/sources/shiboken2/ApiExtractor/abstractmetabuilder.cpp b/sources/shiboken2/ApiExtractor/abstractmetabuilder.cpp
index 251d674a9..c8ff41d91 100644
--- a/sources/shiboken2/ApiExtractor/abstractmetabuilder.cpp
+++ b/sources/shiboken2/ApiExtractor/abstractmetabuilder.cpp
@@ -960,6 +960,15 @@ AbstractMetaEnum *AbstractMetaBuilderPrivate::traverseEnum(const EnumModelItem &
     metaEnum->setOriginalAttributes(metaEnum->attributes());
 
     // Register all enum values on Type database
+    QString prefix;
+    if (enclosing) {
+        prefix += enclosing->typeEntry()->qualifiedCppName();
+        prefix += colonColon();
+    }
+    if (enumItem->enumKind() == EnumClass) {
+        prefix += enumItem->name();
+        prefix += colonColon();
+    }
     const EnumeratorList &enumerators = enumItem->enumerators();
     for (const EnumeratorModelItem &e : enumerators) {
         QString name;
@@ -967,11 +976,12 @@ AbstractMetaEnum *AbstractMetaBuilderPrivate::traverseEnum(const EnumModelItem &
             name += enclosing->name();
             name += colonColon();
         }
-        name += e->name();
         EnumValueTypeEntry *enumValue =
-            new EnumValueTypeEntry(name, e->stringValue(),
+            new EnumValueTypeEntry(prefix + e->name(), e->stringValue(),
                                    enumTypeEntry, enumTypeEntry->version());
         TypeDatabase::instance()->addType(enumValue);
+        if (e->value().isNullValue())
+            enumTypeEntry->setNullValue(enumValue);
     }
 
     return metaEnum;