feat: debug_ensure{,_eq,_ne} macros combining debug_assert* and anyhow::ensure (#6907)

We have some debug assertions already, but we also want the corresponding errors in the release
configuration so that it's not less reliable than non-optimized one. This doesn't change any
function signatures, only debug assertions in functions returning `Result` are replaced.

Author: iequidoo

src/contact.rs

@@ -37,7 +37,7 @@ use crate::mimeparser::AvatarAction;
 use crate::param::{Param, Params};
 use crate::sync::{self, Sync::*};
 use crate::tools::{SystemTime, duration_to_str, get_abs_path, time};
-use crate::{chat, chatlist_events, stock_str};
+use crate::{chat, chatlist_events, debug_ensure_ne, stock_str};
 
 /// Time during which a contact is considered as seen recently.
 const SEEN_RECENTLY_SECONDS: i64 = 600;
@@ -1907,9 +1907,10 @@ pub(crate) async fn mark_contact_id_as_verified(
     contact_id: ContactId,
     verifier_id: ContactId,
 ) -> Result<()> {
-    debug_assert_ne!(
-        contact_id, verifier_id,
-        "Contact cannot be verified by self"
+    debug_ensure_ne!(
+        contact_id,
+        verifier_id,
+        "Contact cannot be verified by self",
     );
     context
         .sql

src/mimefactory.rs

@@ -21,6 +21,7 @@ use crate::constants::ASM_SUBJECT;
 use crate::constants::{Chattype, DC_FROM_HANDSHAKE};
 use crate::contact::{Contact, ContactId, Origin};
 use crate::context::Context;
+use crate::debug_ensure;
 use crate::e2ee::EncryptHelper;
 use crate::ephemeral::Timer as EphemeralTimer;
 use crate::key::self_fingerprint;
@@ -310,7 +311,7 @@ impl MimeFactory {
                                             } else if id == ContactId::SELF {
                                                 member_fingerprints.push(self_fingerprint.to_string());
                                             } else {
-                                                debug_assert!(member_fingerprints.is_empty(), "If some past member is a key-contact, all other past members should be key-contacts too");
+                                                debug_ensure!(member_fingerprints.is_empty(), "If some past member is a key-contact, all other past members should be key-contacts too");
                                             }
                                         }
                                         member_timestamps.push(add_timestamp);
@@ -361,16 +362,16 @@ impl MimeFactory {
                                                 // if we are leaving the group.
                                                 past_member_fingerprints.push(self_fingerprint.to_string());
                                             } else {
-                                                debug_assert!(past_member_fingerprints.is_empty(), "If some past member is a key-contact, all other past members should be key-contacts too");
+                                                debug_ensure!(past_member_fingerprints.is_empty(), "If some past member is a key-contact, all other past members should be key-contacts too");
                                             }
                                         }
                                     }
                                 }
                             }
                         }
 
-                        debug_assert!(member_timestamps.len() >= to.len());
-                        debug_assert!(member_fingerprints.is_empty() || member_fingerprints.len() >= to.len());
+                        debug_ensure!(member_timestamps.len() >= to.len());
+                        debug_ensure!(member_fingerprints.is_empty() || member_fingerprints.len() >= to.len());
 
                         if to.len() > 1 {
                             if let Some(position) = to.iter().position(|(_, x)| x == &from_addr) {
@@ -447,7 +448,7 @@ impl MimeFactory {
         };
         let attach_selfavatar = Self::should_attach_selfavatar(context, &msg).await;
 
-        debug_assert!(
+        debug_ensure!(
             member_timestamps.is_empty()
                 || to.len() + past_members.len() == member_timestamps.len()
         );
@@ -670,7 +671,7 @@ impl MimeFactory {
             ));
         }
 
-        debug_assert!(
+        debug_ensure!(
             self.member_timestamps.is_empty()
                 || to.len() + past_members.len() == self.member_timestamps.len()
         );

src/receive_imf.rs

@@ -42,7 +42,7 @@ use crate::simplify;
 use crate::stock_str;
 use crate::sync::Sync::*;
 use crate::tools::{self, buf_compress, remove_subject_prefix};
-use crate::{chatlist_events, location};
+use crate::{chatlist_events, debug_ensure, debug_ensure_eq, location};
 use crate::{contact, imap};
 
 /// This is the struct that is returned after receiving one email (aka MIME message).
@@ -1435,7 +1435,7 @@ async fn do_chat_assignment(
                     false => None,
                 };
                 if let Some(chat) = chat {
-                    debug_assert!(chat.typ == Chattype::Single);
+                    debug_ensure!(chat.typ == Chattype::Single);
                     let mut new_protection = match verified_encryption {
                         VerifiedEncryption::Verified => ProtectionStatus::Protected,
                         VerifiedEncryption::NotVerified(_) => ProtectionStatus::Unprotected,
@@ -2105,7 +2105,7 @@ RETURNING id
         // afterwards insert additional parts.
         replace_msg_id = None;
 
-        debug_assert!(!row_id.is_special());
+        debug_ensure!(!row_id.is_special());
         created_db_entries.push(row_id);
     }
 
@@ -2368,7 +2368,7 @@ async fn lookup_chat_by_reply(
     // lookup by reply should never be needed
     // as we can directly assign the message to the chat
     // by its group ID.
-    debug_assert!(mime_parser.get_chat_group_id().is_none() || !mime_parser.was_encrypted());
+    debug_ensure!(mime_parser.get_chat_group_id().is_none() || !mime_parser.was_encrypted());
 
     // Try to assign message to the same chat as the parent message.
     let Some(parent_chat_id) = ChatId::lookup_by_message(parent) else {
@@ -3628,7 +3628,7 @@ async fn add_or_lookup_key_contacts_by_address_list(
         }
     }
 
-    debug_assert_eq!(contact_ids.len(), address_list.len());
+    debug_ensure_eq!(contact_ids.len(), address_list.len(),);
     Ok(contact_ids)
 }
 
@@ -3782,7 +3782,7 @@ async fn lookup_key_contacts_by_address_list(
             contact_ids.push(contact_id);
         }
     }
-    debug_assert_eq!(address_list.len(), contact_ids.len());
+    debug_ensure_eq!(address_list.len(), contact_ids.len(),);
     Ok(contact_ids)
 }
 

src/tools.rs

@@ -762,5 +762,43 @@ pub(crate) fn inc_and_check<T: PrimInt + AddAssign + std::fmt::Debug>(
     Ok(())
 }
 
+/// Return early with an error if a condition is not satisfied.
+/// In non-optimized builds, panics instead if so.
+#[macro_export]
+macro_rules! debug_ensure {
+    ($($arg:tt)*) => {
+        debug_assert!($($arg)*);
+        anyhow::ensure!($($arg)*);
+    };
+}
+
+/// Return early with an error on two expressions inequality.
+/// In non-optimized builds, panics instead if so.
+#[macro_export]
+macro_rules! debug_ensure_eq {
+    ($left:expr, $right:expr, $($arg:tt)*) => {
+        match (&$left, &$right) {
+            (left_val, right_val) => {
+                debug_assert_eq!(left_val, right_val, $($arg)*);
+                anyhow::ensure!(left_val == right_val, $($arg)*);
+            }
+        }
+    };
+}
+
+/// Return early with an error on two expressions equality.
+/// In non-optimized builds, panics instead if so.
+#[macro_export]
+macro_rules! debug_ensure_ne {
+    ($left:expr, $right:expr, $($arg:tt)*) => {
+        match (&$left, &$right) {
+            (left_val, right_val) => {
+                debug_assert_ne!(left_val, right_val, $($arg)*);
+                anyhow::ensure!(left_val != right_val, $($arg)*);
+            }
+        }
+    };
+}
+
 #[cfg(test)]
 mod tools_tests;