fix: add support for enums with single enumeration

Author: brianstoop

src/PHPDraft/Model/Category.php

@@ -50,7 +50,7 @@ public function parse(object $object): self
                     $struct->deps = $deps;
                     $struct->parse($item->content, $deps);
 
-                    if (isset($item->content->content[0]->meta->id)) {
+                    if (isset($item->content->content) && is_array($item->content->content) && isset($item->content->content[0]->meta->id)) {
                         $this->structures[$item->content->content[0]->meta->id] = $struct;
                     } elseif (isset($item->content->meta->id->content)) {
                         $this->structures[$item->content->meta->id->content] = $struct;

src/PHPDraft/Model/Elements/EnumStructureElement.php

@@ -56,15 +56,16 @@ public function parse(?object $object, array &$dependencies): self
                 $dependencies[] = $object->content->element;
             }
             $this->value = $object->content->content;
-            $this->deps  = $dependencies;
-
-            return $this;
         }
 
-        foreach ($object->attributes->enumerations->content as $sub_item) {
-            $element = new ElementStructureElement();
-            $element->parse($sub_item, $dependencies);
-            $this->value[] = $element;
+        if (isset($object->attributes->enumerations->content) && $object->attributes->enumerations->content !== []) {
+            $this->value = [];
+
+            foreach ($object->attributes->enumerations->content as $sub_item) {
+                $element = new ElementStructureElement();
+                $element->parse($sub_item, $dependencies);
+                $this->value[] = $element;
+            }
         }
 
         $this->deps = $dependencies;

src/PHPDraft/Model/Elements/Tests/EnumStructureElementTest.php

@@ -186,6 +186,19 @@ public static function parseObjectProvider(): array
         $base3->is_variable = false;
         $base3->deps        = [];
 
+        $base4              = new EnumStructureElement();
+        $base4->key         = new ElementStructureElement();
+        $base4->value       = [ $value1 ];
+        $base4->key->type   = 'string';
+        $base4->key->value  = 'item';
+        $base4->status      = [];
+        $base4->element     = 'enum';
+        $base4->type        = 'Some simple enum';
+        $base4->is_variable = false;
+        $base4->description = null;
+        $base4->ref = null;
+        $base4->deps        = ['Some simple enum'];
+
         $return['base enum'] = [
             '{
                 "element":"enum",
@@ -288,6 +301,44 @@ public static function parseObjectProvider(): array
             }',
             $base3,
         ];
+        $return['enum with single enumeration and content'] = [
+            '{
+                "element":"enum",
+                "meta":{
+                    "id":{
+                        "element":"string",
+                        "content":"Some simple enum"
+                    }
+                },
+                "attributes":{
+                    "enumerations":{
+                        "element":"array",
+                        "content":[
+                            {
+                                "element":"string",
+                                "attributes":{
+                                    "typeAttributes":{
+                                        "element":"array",
+                                        "content":[
+                                            {
+                                                "element":"string",
+                                                "content":"fixed"
+                                            }
+                                        ]
+                                    }
+                                },
+                                "content":"item"
+                            }
+                        ]
+                    }
+                },
+                "content": {
+                    "element": "string",
+                    "content": "item"
+                }
+            }',
+            $base4,
+        ];
 
         return $return;
     }