fix: remove unwrap from generated implementations of Injectable

2 files changed, 23 insertions, 4 deletions

diff --git a/macros/src/injectable/implementation.rs b/macros/src/injectable/implementation.rs
index e81dd2d..30132bf 100644
--- a/macros/src/injectable/implementation.rs
+++ b/macros/src/injectable/implementation.rs
@@ -430,10 +430,16 @@ impl<Dep: IDependency> InjectableImpl<Dep>
         };
 
         Ok(quote! {
-            #do_method_call.map_err(|err| #resolve_failed_error {
-                reason: Box::new(err),
-                affected: self_type_name
-            })?.#to_ptr().unwrap()
+            #do_method_call
+                .map_err(|err| #resolve_failed_error {
+                    reason: Box::new(err),
+                    affected: self_type_name
+                })?
+                .#to_ptr()
+                .map_err(|err| InjectableError:: PrepareDependencyFailed {
+                    reason: err,
+                    dependency_name: #dep_interface_str
+                })?
         })
     }
 
diff --git a/src/errors/injectable.rs b/src/errors/injectable.rs
index f132063..f040062 100644
--- a/src/errors/injectable.rs
+++ b/src/errors/injectable.rs
@@ -4,6 +4,7 @@
 
 use crate::dependency_history::DependencyHistory;
 use crate::errors::di_container::DIContainerError;
+use crate::errors::ptr::SomePtrError;
 
 /// Error type for structs that implement [`Injectable`].
 ///
@@ -42,4 +43,16 @@ pub enum InjectableError
         /// History of dependencies.
         dependency_history: DependencyHistory,
     },
+
+    /// Failed to prepare a dependency.
+    #[error("Failed to prepare dependency '{dependency_name}'")]
+    PrepareDependencyFailed
+    {
+        /// Error reason.
+        #[source]
+        reason: SomePtrError,
+
+        /// The name of the dependency.
+        dependency_name: &'static str,
+    },
 }