Support explicit values in flag properties, add C# flags support

- Add support for explicit values in properties using `PROPERTY_HINT_FLAGS`
that works the same way it does for enums.
- Fix enums and flags in VisualScriptEditor (it wasn't considering the
explicit value).
- Use `PROPERTY_HINT_FLAGS` for C# enums with the FlagsAttribute instead
of `PROPERTY_HINT_ENUM`.

4 files changed, 12 insertions, 0 deletions

diff --git a/modules/mono/mono_gd/gd_mono_cache.cpp b/modules/mono/mono_gd/gd_mono_cache.cpp
index d8fd244067..44a8e26b8f 100644
--- a/modules/mono/mono_gd/gd_mono_cache.cpp
+++ b/modules/mono/mono_gd/gd_mono_cache.cpp
@@ -176,6 +176,7 @@ void CachedData::clear_godot_api_cache() {
 	methodthunk_MarshalUtils_TypeIsGenericIEnumerable.nullify();
 	methodthunk_MarshalUtils_TypeIsGenericICollection.nullify();
 	methodthunk_MarshalUtils_TypeIsGenericIDictionary.nullify();
+	methodthunk_MarshalUtils_TypeHasFlagsAttribute.nullify();
 
 	methodthunk_MarshalUtils_GetGenericTypeDefinition.nullify();
 
@@ -300,6 +301,7 @@ void update_godot_api_cache() {
 	CACHE_METHOD_THUNK_AND_CHECK(MarshalUtils, TypeIsGenericIEnumerable, GODOT_API_CLASS(MarshalUtils)->get_method("TypeIsGenericIEnumerable", 1));
 	CACHE_METHOD_THUNK_AND_CHECK(MarshalUtils, TypeIsGenericICollection, GODOT_API_CLASS(MarshalUtils)->get_method("TypeIsGenericICollection", 1));
 	CACHE_METHOD_THUNK_AND_CHECK(MarshalUtils, TypeIsGenericIDictionary, GODOT_API_CLASS(MarshalUtils)->get_method("TypeIsGenericIDictionary", 1));
+	CACHE_METHOD_THUNK_AND_CHECK(MarshalUtils, TypeHasFlagsAttribute, GODOT_API_CLASS(MarshalUtils)->get_method("TypeHasFlagsAttribute", 1));
 
 	CACHE_METHOD_THUNK_AND_CHECK(MarshalUtils, GetGenericTypeDefinition, GODOT_API_CLASS(MarshalUtils)->get_method("GetGenericTypeDefinition", 2));
 
diff --git a/modules/mono/mono_gd/gd_mono_cache.h b/modules/mono/mono_gd/gd_mono_cache.h
index 4000342c94..92136e1f41 100644
--- a/modules/mono/mono_gd/gd_mono_cache.h
+++ b/modules/mono/mono_gd/gd_mono_cache.h
@@ -147,6 +147,7 @@ struct CachedData {
 	GDMonoMethodThunkR<MonoBoolean, MonoReflectionType *> methodthunk_MarshalUtils_TypeIsGenericIEnumerable;
 	GDMonoMethodThunkR<MonoBoolean, MonoReflectionType *> methodthunk_MarshalUtils_TypeIsGenericICollection;
 	GDMonoMethodThunkR<MonoBoolean, MonoReflectionType *> methodthunk_MarshalUtils_TypeIsGenericIDictionary;
+	GDMonoMethodThunkR<MonoBoolean, MonoReflectionType *> methodthunk_MarshalUtils_TypeHasFlagsAttribute;
 
 	GDMonoMethodThunk<MonoReflectionType *, MonoReflectionType **> methodthunk_MarshalUtils_GetGenericTypeDefinition;
 
diff --git a/modules/mono/mono_gd/gd_mono_utils.cpp b/modules/mono/mono_gd/gd_mono_utils.cpp
index 25678be624..1983d6ebe2 100644
--- a/modules/mono/mono_gd/gd_mono_utils.cpp
+++ b/modules/mono/mono_gd/gd_mono_utils.cpp
@@ -614,6 +614,14 @@ bool type_is_generic_idictionary(MonoReflectionType *p_reftype) {
 	return (bool)res;
 }
 
+bool type_has_flags_attribute(MonoReflectionType *p_reftype) {
+	NO_GLUE_RET(false);
+	MonoException *exc = nullptr;
+	MonoBoolean res = CACHED_METHOD_THUNK(MarshalUtils, TypeHasFlagsAttribute).invoke(p_reftype, &exc);
+	UNHANDLED_EXCEPTION(exc);
+	return (bool)res;
+}
+
 void get_generic_type_definition(MonoReflectionType *p_reftype, MonoReflectionType **r_generic_reftype) {
 	MonoException *exc = nullptr;
 	CACHED_METHOD_THUNK(MarshalUtils, GetGenericTypeDefinition).invoke(p_reftype, r_generic_reftype, &exc);
diff --git a/modules/mono/mono_gd/gd_mono_utils.h b/modules/mono/mono_gd/gd_mono_utils.h
index 4c2c2c93c2..246a1cd31e 100644
--- a/modules/mono/mono_gd/gd_mono_utils.h
+++ b/modules/mono/mono_gd/gd_mono_utils.h
@@ -61,6 +61,7 @@ bool type_is_system_generic_dictionary(MonoReflectionType *p_reftype);
 bool type_is_generic_ienumerable(MonoReflectionType *p_reftype);
 bool type_is_generic_icollection(MonoReflectionType *p_reftype);
 bool type_is_generic_idictionary(MonoReflectionType *p_reftype);
+bool type_has_flags_attribute(MonoReflectionType *p_reftype);
 
 void get_generic_type_definition(MonoReflectionType *p_reftype, MonoReflectionType **r_generic_reftype);