refactor: migrate Connection type to procedural macros

Author: thunderbiscuit

bdk-ffi/src/bdk.udl

@@ -805,13 +805,7 @@ dictionary Condition {
 // bdk_sqlite crate
 // ------------------------------------------------------------------------
 
-interface Connection {
-  [Throws=SqliteError]
-  constructor(string path);
-
-  [Name=new_in_memory, Throws=SqliteError]
-  constructor();
-};
+typedef interface Connection;
 
 // ------------------------------------------------------------------------
 // bdk crate - descriptor module

bdk-ffi/src/store.rs

@@ -5,19 +5,29 @@ use bdk_wallet::rusqlite::Connection as BdkConnection;
 use std::sync::Mutex;
 use std::sync::MutexGuard;
 
+/// A connection to a SQLite database.
+#[derive(uniffi::Object)]
 pub struct Connection(Mutex<BdkConnection>);
 
+#[uniffi::export]
 impl Connection {
+    /// Open a new connection to a SQLite database. If a database does not exist at the path, one is
+    /// created.
+    #[uniffi::constructor]
     pub fn new(path: String) -> Result<Self, SqliteError> {
         let connection = BdkConnection::open(path)?;
         Ok(Self(Mutex::new(connection)))
     }
 
+    /// Open a new connection to an in-memory SQLite database.
+    #[uniffi::constructor]
     pub fn new_in_memory() -> Result<Self, SqliteError> {
         let connection = BdkConnection::open_in_memory()?;
         Ok(Self(Mutex::new(connection)))
     }
+}
 
+impl Connection {
     pub(crate) fn get_store(&self) -> MutexGuard<BdkConnection> {
         self.0.lock().expect("must lock")
     }