fix: Improve exception message.

CHANGELOG.md

@@ -1,5 +1,9 @@
 # CHANGELOG
 
+## 0.5.6
+
+* fix: Improve exception message.
+
 ## 0.5.5
 
 * docs: Add link to documentation website.

src/Transformer/Exception/UnableToReadException.php

@@ -0,0 +1,37 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of rekalogika/mapper package.
+ *
+ * (c) Priyadi Iman Nurcahyo <https://rekalogika.dev>
+ *
+ * For the full copyright and license information, please view the LICENSE file
+ * that was distributed with this source code.
+ */
+
+namespace Rekalogika\Mapper\Transformer\Exception;
+
+class UnableToReadException extends NotMappableValueException
+{
+    public function __construct(
+        mixed $source,
+        mixed $target,
+        mixed $object,
+        string $propertyName,
+        \Throwable $previous = null
+    ) {
+        parent::__construct(
+            sprintf(
+                'Trying to map source type "%s" to target type "%s", but encountered an error when trying to read from the property "%s" on object type "%s".',
+                \get_debug_type($source),
+                \get_debug_type($target),
+                $propertyName,
+                \get_debug_type($object)
+            ),
+            0,
+            $previous
+        );
+    }
+}

src/Transformer/Exception/UnableToWriteException.php

@@ -0,0 +1,37 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of rekalogika/mapper package.
+ *
+ * (c) Priyadi Iman Nurcahyo <https://rekalogika.dev>
+ *
+ * For the full copyright and license information, please view the LICENSE file
+ * that was distributed with this source code.
+ */
+
+namespace Rekalogika\Mapper\Transformer\Exception;
+
+class UnableToWriteException extends NotMappableValueException
+{
+    public function __construct(
+        mixed $source,
+        mixed $target,
+        mixed $object,
+        string $propertyName,
+        \Throwable $previous = null
+    ) {
+        parent::__construct(
+            sprintf(
+                'Trying to map source type "%s" to target type "%s", but encountered an error when trying to write to the property "%s" on object type "%s".',
+                \get_debug_type($source),
+                \get_debug_type($target),
+                $propertyName,
+                \get_debug_type($object)
+            ),
+            0,
+            $previous
+        );
+    }
+}

src/Transformer/ObjectToObjectTransformer.php

@@ -25,10 +25,13 @@
 use Rekalogika\Mapper\Transformer\Exception\InstantiationFailureException;
 use Rekalogika\Mapper\Transformer\Exception\InvalidClassException;
 use Rekalogika\Mapper\Transformer\Exception\NotAClassException;
+use Rekalogika\Mapper\Transformer\Exception\UnableToWriteException;
 use Rekalogika\Mapper\TypeResolver\TypeResolverInterface;
 use Rekalogika\Mapper\Util\TypeCheck;
 use Rekalogika\Mapper\Util\TypeFactory;
+use Symfony\Component\PropertyAccess\Exception\AccessException;
 use Symfony\Component\PropertyAccess\Exception\NoSuchPropertyException;
+use Symfony\Component\PropertyAccess\Exception\UnexpectedTypeException;
 use Symfony\Component\PropertyAccess\PropertyAccessorInterface;
 use Symfony\Component\PropertyInfo\PropertyAccessExtractorInterface;
 use Symfony\Component\PropertyInfo\PropertyInitializableExtractorInterface;
@@ -124,7 +127,11 @@ public function transform(
                 context: $context
             );
 
-            $this->propertyAccessor->setValue($target, $propertyName, $targetPropertyValue);
+            try {
+                $this->propertyAccessor->setValue($target, $propertyName, $targetPropertyValue);
+            } catch (AccessException | UnexpectedTypeException $e) {
+                throw new UnableToWriteException($source, $target, $target, $propertyName, $e);
+            }
         }
 
         return $target;