- Added a new taxus_has() method to check if a privilege exists

src/Picea/Extension.php

@@ -19,6 +19,7 @@ class Extension implements \Picea\Extension\Extension
     public function register(Context $context) : void
     {
         $context->pushFunction("taxus", [ $this, 'taxus' ]);
+        $context->pushFunction("taxus_has", [ $this, 'taxusHas' ]);
     }
 
     public function parse(\Picea\Compiler\Context &$context, ?string $arguments, string $token, array $options = []) : string
@@ -31,4 +32,8 @@ class Extension implements \Picea\Extension\Extension
         return $this->taxus->granted($name, ...$arguments);
     }
 
+    public function taxusHas(string $name) : bool
+    {
+        return $this->taxus->hasPrivilege($name);
+    }
 }

src/Taxus.php

@@ -4,14 +4,26 @@ namespace Taxus;
 
 class Taxus
 {
-    protected PermissionGrantInterface $gate;
+    # @ArrayOf Privilege
+    protected array $list = [];
 
-    public function __construct(PermissionGrantInterface $gate)
+    # @ArrayOf PermissionGrantInterface
+    protected array $gates = [];
+
+    public function __construct(PermissionGrantInterface ... $gate,)
     {
-        $this->gate = $gate;
+        $this->pushGate(... $gate);
     }
 
-    protected array $list;
+    public function pushGate(PermissionGrantInterface ... $gates) : void
+    {
+        $this->gates = array_merge($this->gates, $gates);
+    }
+
+    public function hasPrivilege(string $name) : bool
+    {
+        return isset($this->list[$name]);
+    }
 
     public function add(...$privileges) : self
     {
@@ -44,6 +56,17 @@ class Taxus
 
         $callback = $this->list[$name][1] ?? 'default';
 
-        return $this->gate->$callback(...$arguments);
+        foreach($this->gates as $gate) {
+            if ( method_exists($gate, $callback) ) {
+                return $gate->$callback(...$arguments);
+            }
+        }
+
+        throw new \Exception(
+            sprintf(
+                "Method '$callback' could not be found from given gates list: %s",
+                implode(', ', array_map(fn($e) => $e::class, $this->gates))
+            )
+        );
     }
 }