feat(mysql): impl Decode for str and String

sqlx-mysql/src/types.rs

@@ -27,6 +27,7 @@
 //!
 
 mod bool;
+mod str;
 mod uint;
 
 // TODO: mod decimal;

sqlx-mysql/src/types/str.rs

@@ -0,0 +1,41 @@
+use bytes::Buf;
+use sqlx_core::database::HasOutput;
+use sqlx_core::{decode, encode};
+use sqlx_core::{Database, Decode, Encode};
+
+use crate::type_info::MySqlTypeInfo;
+use crate::MySqlRawValueFormat::*;
+use crate::{MySql, MySqlOutput, MySqlRawValue, MySqlTypeId};
+
+// https://dev.mysql.com/doc/internals/en/binary-protocol-value.html#packet-ProtocolBinary
+
+// TODO: accepts(ty)
+// TODO: compatible(ty)
+
+impl Encode<MySql> for str {
+    fn encode(&self, _: &MySqlTypeInfo, out: &mut MySqlOutput<'_>) -> encode::Result<()> {
+        todo!("encode: &str");
+
+        Ok(())
+    }
+}
+
+impl Encode<MySql> for String {
+    fn encode(&self, _: &MySqlTypeInfo, out: &mut MySqlOutput<'_>) -> encode::Result<()> {
+        todo!("encode: String");
+
+        Ok(())
+    }
+}
+
+impl<'r> Decode<'r, MySql> for &'r str {
+    fn decode(value: MySqlRawValue<'r>) -> decode::Result<Self> {
+        value.as_str()
+    }
+}
+
+impl<'r> Decode<'r, MySql> for String {
+    fn decode(value: MySqlRawValue<'r>) -> decode::Result<Self> {
+        value.as_str().map(str::to_owned)
+    }
+}