Throw internal exception while fetching not decoded identifier from c…

…ollection

src/Exceptions/MissingIdentifier.php

@@ -0,0 +1,38 @@
+<?php
+declare(strict_types=1);
+
+namespace NGT\Barcode\GS1Decoder\Exceptions;
+
+use InvalidArgumentException;
+
+class MissingIdentifier extends InvalidArgumentException
+{
+    /**
+     * The missing identifier code.
+     *
+     * @var  string
+     */
+    protected $identifierCode;
+
+    /**
+     * The exception constructor.
+     *
+     * @param  string  $identifierCode
+     */
+    public function __construct(string $identifierCode)
+    {
+        parent::__construct("Missing identifier with \"{$identifierCode}\" code.");
+
+        $this->identifierCode = $identifierCode;
+    }
+
+    /**
+     * Get the missing identifier code.
+     *
+     * @return  string
+     */
+    public function getIdentifierCode(): string
+    {
+        return $this->identifierCode;
+    }
+}

src/IdentifierCollection.php

@@ -3,8 +3,8 @@
 
 namespace NGT\Barcode\GS1Decoder;
 
-use InvalidArgumentException;
 use NGT\Barcode\GS1Decoder\Contracts\Identifier;
+use NGT\Barcode\GS1Decoder\Exceptions\MissingIdentifier;
 
 class IdentifierCollection
 {
@@ -53,15 +53,15 @@ public function has(string $code): bool
      *
      * @param   string  $code
      * @return  \NGT\Barcode\GS1Decoder\Contracts\Identifier
-     * @throws  InvalidArgumentException
+     * @throws  \NGT\Barcode\GS1Decoder\Exceptions\MissingIdentifier
      */
     public function get(string $code): Identifier
     {
         if ($this->has($code)) {
             return $this->items[$code];
         }
 
-        throw new InvalidArgumentException("Missing identifier with code \"{$code}\".");
+        throw new MissingIdentifier($code);
     }
 
     /**