Allow converting AnyConnectOptions to a specific ConnectOptions

Author: 05storm26

sqlx-core/src/any/options.rs

@@ -3,6 +3,7 @@ use crate::connection::ConnectOptions;
 use crate::error::Error;
 use futures_core::future::BoxFuture;
 use log::LevelFilter;
+use std::convert::TryFrom;
 use std::str::FromStr;
 use std::time::Duration;
 
@@ -26,7 +27,7 @@ use crate::mssql::MssqlConnectOptions;
 /// postgres://postgres:password@localhost/database
 /// mysql://root:password@localhost/database
 /// ```
-#[derive(Debug)]
+#[derive(Debug, Clone)]
 pub struct AnyConnectOptions(pub(crate) AnyConnectOptionsKind);
 
 impl AnyConnectOptions {
@@ -47,7 +48,67 @@ impl AnyConnectOptions {
     }
 }
 
-#[derive(Debug)]
+#[cfg(feature = "postgres")]
+impl TryFrom<AnyConnectOptions> for PgConnectOptions {
+    type Error = Error;
+
+    fn try_from(value: AnyConnectOptions) -> Result<Self, Self::Error> {
+        if let AnyConnectOptionsKind::Postgres(connect_options) = value.0 {
+            Ok(connect_options)
+        } else {
+            Err(Error::Configuration(
+                "Not postgres typed AnyConnectOptions".into(),
+            ))
+        }
+    }
+}
+
+#[cfg(feature = "mysql")]
+impl TryFrom<AnyConnectOptions> for MySqlConnectOptions {
+    type Error = Error;
+
+    fn try_from(value: AnyConnectOptions) -> Result<Self, Self::Error> {
+        if let AnyConnectOptionsKind::MySql(connect_options) = value.0 {
+            Ok(connect_options)
+        } else {
+            Err(Error::Configuration(
+                "Not mysql typed AnyConnectOptions".into(),
+            ))
+        }
+    }
+}
+
+#[cfg(feature = "sqlite")]
+impl TryFrom<AnyConnectOptions> for SqliteConnectOptions {
+    type Error = Error;
+
+    fn try_from(value: AnyConnectOptions) -> Result<Self, Self::Error> {
+        if let AnyConnectOptionsKind::Sqlite(connect_options) = value.0 {
+            Ok(connect_options)
+        } else {
+            Err(Error::Configuration(
+                "Not sqlite typed AnyConnectOptions".into(),
+            ))
+        }
+    }
+}
+
+#[cfg(feature = "mssql")]
+impl TryFrom<AnyConnectOptions> for MssqlConnectOptions {
+    type Error = Error;
+
+    fn try_from(value: AnyConnectOptions) -> Result<Self, Self::Error> {
+        if let AnyConnectOptionsKind::Mssql(connect_options) = value {
+            Ok(connect_options)
+        } else {
+            Err(Error::Configuration(
+                "Not mssql typed AnyConnectOptions".into(),
+            ))
+        }
+    }
+}
+
+#[derive(Debug, Clone)]
 pub(crate) enum AnyConnectOptionsKind {
     #[cfg(feature = "postgres")]
     Postgres(PgConnectOptions),