Merge pull request #919 from BratSinot/smol_str

Add FromSql / ToSql for smol_str::SmolStr.

Author: sfackler

postgres-types/Cargo.toml

@@ -48,3 +48,5 @@ uuid-08 = { version = "0.8", package = "uuid", optional = true }
 uuid-1 = { version = "1.0", package = "uuid", optional = true }
 time-02 = { version = "0.2", package = "time", optional = true }
 time-03 = { version = "0.3", package = "time", default-features = false, optional = true }
+
+smol_str-01 = { version = "0.1.23", package = "smol_str", default-features = false, optional = true }

postgres-types/src/lib.rs

@@ -224,6 +224,8 @@ mod geo_types_06;
 mod geo_types_07;
 #[cfg(feature = "with-serde_json-1")]
 mod serde_json_1;
+#[cfg(feature = "smol_str-01")]
+mod smol_str_01;
 #[cfg(feature = "with-time-0_2")]
 mod time_02;
 #[cfg(feature = "with-time-0_3")]
@@ -443,6 +445,9 @@ impl WrongType {
 /// | `eui48::MacAddress`             | MACADDR                             |
 /// | `cidr::InetCidr`                | CIDR                                |
 /// | `cidr::InetAddr`                | INET                                |
+/// | `smol_str::SmolStr`             | VARCHAR, CHAR(n), TEXT, CITEXT,     |
+/// |                                 | NAME, UNKNOWN, LTREE, LQUERY,       |
+/// |                                 | LTXTQUERY                           |
 ///
 /// # Nullability
 ///

postgres-types/src/smol_str_01.rs

@@ -0,0 +1,27 @@
+use bytes::BytesMut;
+use smol_str_01::SmolStr;
+use std::error::Error;
+
+use crate::{FromSql, IsNull, ToSql, Type};
+
+impl<'a> FromSql<'a> for SmolStr {
+    fn from_sql(ty: &Type, raw: &'a [u8]) -> Result<SmolStr, Box<dyn Error + Sync + Send>> {
+        <&str as FromSql>::from_sql(ty, raw).map(SmolStr::from)
+    }
+
+    fn accepts(ty: &Type) -> bool {
+        <&str as FromSql>::accepts(ty)
+    }
+}
+
+impl ToSql for SmolStr {
+    fn to_sql(&self, ty: &Type, w: &mut BytesMut) -> Result<IsNull, Box<dyn Error + Sync + Send>> {
+        <&str as ToSql>::to_sql(&&**self, ty, w)
+    }
+
+    fn accepts(ty: &Type) -> bool {
+        <&str as ToSql>::accepts(ty)
+    }
+
+    to_sql_checked!();
+}