GDScript: Allow export of enum variables

Also fix the enum type in variables to be integer.

modules/gdscript/gdscript_compiler.cpp

@@ -137,16 +137,12 @@ GDScriptDataType GDScriptCompiler::_gdtype_from_datatype(const GDScriptParser::D
 				}
 			}
 		} break;
+		case GDScriptParser::DataType::ENUM:
 		case GDScriptParser::DataType::ENUM_VALUE:
 			result.has_type = true;
 			result.kind = GDScriptDataType::BUILTIN;
 			result.builtin_type = Variant::INT;
 			break;
-		case GDScriptParser::DataType::ENUM:
-			result.has_type = true;
-			result.kind = GDScriptDataType::BUILTIN;
-			result.builtin_type = Variant::DICTIONARY;
-			break;
 		case GDScriptParser::DataType::UNRESOLVED: {
 			ERR_PRINT("Parser bug: converting unresolved type.");
 			return GDScriptDataType();
@@ -2218,9 +2214,8 @@ Error GDScriptCompiler::_parse_class_level(GDScript *p_script, const GDScriptPar
 					prop_info.hint = export_info.hint;
 					prop_info.hint_string = export_info.hint_string;
 					prop_info.usage = export_info.usage;
-				} else {
-					prop_info.usage = PROPERTY_USAGE_SCRIPT_VARIABLE;
 				}
+				prop_info.usage |= PROPERTY_USAGE_SCRIPT_VARIABLE;
 #ifdef TOOLS_ENABLED
 				p_script->doc_variables[name] = variable->doc_description;
 #endif

modules/gdscript/gdscript_parser.cpp

@@ -3249,12 +3249,29 @@ bool GDScriptParser::export_annotations(const AnnotationNode *p_annotation, Node
 					variable->export_info.hint = PROPERTY_HINT_RESOURCE_TYPE;
 					variable->export_info.hint_string = get_real_class_name(export_type.native_type);
 				} else {
-					push_error(R"(Export type can only be built-in or a resource.)", variable);
+					push_error(R"(Export type can only be built-in, a resource, or an enum.)", variable);
 				}
 				break;
+			case GDScriptParser::DataType::ENUM: {
+				variable->export_info.type = Variant::INT;
+				variable->export_info.hint = PROPERTY_HINT_ENUM;
+
+				String enum_hint_string;
+				for (const Map<StringName, int>::Element *E = export_type.enum_values.front(); E; E = E->next()) {
+					enum_hint_string += E->key().operator String().camelcase_to_underscore(true).capitalize().xml_escape();
+					enum_hint_string += ":";
+					enum_hint_string += String::num_int64(E->get()).xml_escape();
+
+					if (E->next()) {
+						enum_hint_string += ",";
+					}
+				}
+
+				variable->export_info.hint_string = enum_hint_string;
+			} break;
 			default:
 				// TODO: Allow custom user resources.
-				push_error(R"(Export type can only be built-in or a resource.)", variable);
+				push_error(R"(Export type can only be built-in, a resource, or an enum.)", variable);
 				break;
 		}
 	} else {

modules/gdscript/gdscript_parser.h

@@ -132,7 +132,7 @@ public:
 		ClassNode *class_type = nullptr;
 
 		MethodInfo method_info; // For callable/signals.
-		HashMap<StringName, int> enum_values; // For enums.
+		Map<StringName, int> enum_values; // For enums.
 
 		_FORCE_INLINE_ bool is_set() const { return kind != UNRESOLVED; }
 		_FORCE_INLINE_ bool has_no_type() const { return type_source == UNDETECTED; }