Add API to log errors with a custom description appended.

Differential Revision: D76482175

Pull Request resolved: pytorch/executorch#11591

Author: shoumikhin

extension/apple/ExecuTorch/Exported/ExecuTorchError.h

@@ -67,4 +67,16 @@ __attribute__((deprecated("This API is experimental.")))
 NSError *ExecuTorchErrorWithCode(ExecuTorchErrorCode code)
     NS_SWIFT_NAME(Error(code:));
 
+/**
+ * Create an NSError in the ExecuTorch domain for the given code.
+ *
+ * @param code The ExecuTorchErrorCode to wrap.
+ * @param description Additional error description.
+ * @return An NSError with ExecuTorchErrorDomain, the specified code, and a localized description.
+ */
+ FOUNDATION_EXPORT
+ __attribute__((deprecated("This API is experimental.")))
+ NSError *ExecuTorchErrorWithCodeAndDescription(ExecuTorchErrorCode code, NSString * __nullable description)
+     NS_SWIFT_NAME(Error(code:description:));
+
 NS_ASSUME_NONNULL_END

extension/apple/ExecuTorch/Exported/ExecuTorchError.m

@@ -54,9 +54,16 @@
 }
 
 NSError *ExecuTorchErrorWithCode(ExecuTorchErrorCode code) {
+  return ExecuTorchErrorWithCodeAndDescription(code, nil);
+}
+
+NSError *ExecuTorchErrorWithCodeAndDescription(ExecuTorchErrorCode code, NSString * __nullable description) {
   return [NSError errorWithDomain:ExecuTorchErrorDomain
                              code:code
                          userInfo:@{
-                           NSLocalizedDescriptionKey : ExecuTorchErrorDescription(code)
-                         }];
+    NSLocalizedDescriptionKey:
+      description.length > 0
+        ? [ExecuTorchErrorDescription(code) stringByAppendingFormat:@": %@", description]
+        : ExecuTorchErrorDescription(code)
+  }];
 }