feat(mysql): impl Type for bool

sqlx-mysql/src/protocol/row.rs

@@ -8,8 +8,6 @@ use crate::{MySqlColumn, MySqlRawValueFormat, MySqlTypeId};
 #[derive(Debug)]
 pub(crate) struct Row {
     pub(crate) format: MySqlRawValueFormat,
-
-    // TODO: profile storage + byte ranges
     pub(crate) values: Vec<Option<Bytes>>,
 }
 

sqlx-mysql/src/raw_value.rs

@@ -1,6 +1,8 @@
+use std::convert::TryFrom;
 use std::str::from_utf8;
 
 use bytes::Bytes;
+use bytestring::ByteString;
 use sqlx_core::decode::{Error as DecodeError, Result as DecodeResult};
 use sqlx_core::Decode;
 
@@ -37,11 +39,13 @@ impl<'r> MySqlRawValue<'r> {
     }
 
     /// Returns the type information for this value.
-    pub fn type_info(&self) -> &'r MySqlTypeInfo {
+    #[must_use]
+    pub const fn type_info(&self) -> &'r MySqlTypeInfo {
         self.type_info
     }
 
     /// Returns the format of this value.
+    #[must_use]
     pub const fn format(&self) -> MySqlRawValueFormat {
         self.format
     }
@@ -51,12 +55,20 @@ impl<'r> MySqlRawValue<'r> {
         self.value.map(|bytes| &**bytes).ok_or(DecodeError::UnexpectedNull)
     }
 
+    pub(crate) fn as_shared_bytes(&self) -> DecodeResult<Bytes> {
+        self.value.cloned().ok_or(DecodeError::UnexpectedNull)
+    }
+
     /// Returns a `&str` slice from the underlying byte view of this value,
     /// if it contains valid UTF-8.
     pub fn as_str(&self) -> DecodeResult<&'r str> {
         self.as_bytes().and_then(|bytes| from_utf8(bytes).map_err(DecodeError::NotUtf8))
     }
 
+    pub(crate) fn as_shared_str(&self) -> DecodeResult<ByteString> {
+        ByteString::try_from(self.as_shared_bytes()?).map_err(DecodeError::NotUtf8)
+    }
+
     /// Decode this value into the target type.
     pub fn decode<T: Decode<'r, MySql>>(self) -> DecodeResult<T> {
         <T as Decode<'r, MySql>>::decode(self)

sqlx-mysql/src/types/bool.rs

@@ -1,13 +1,20 @@
-use sqlx_core::{decode, encode};
+use sqlx_core::{decode, encode, Type};
 use sqlx_core::{Decode, Encode};
 
-use crate::{MySql, MySqlOutput, MySqlRawValue, MySqlTypeInfo};
+use crate::{MySql, MySqlOutput, MySqlRawValue, MySqlTypeId, MySqlTypeInfo};
 
 // In MySQL, a boolean is an alias for `TINYINT(1) UNSIGNED`
 // the functions below delegate functionality to the `u8` impls
 
-// TODO: accepts(ty) -> ty.is_integer()
-// TODO: compatible(ty) -> ty.is_integer()
+impl Type<MySql> for bool {
+    fn type_id() -> MySqlTypeId {
+        <u8 as Type<MySql>>::type_id()
+    }
+
+    fn compatible(ty: &MySqlTypeInfo) -> bool {
+        <u8 as Type<MySql>>::compatible(ty)
+    }
+}
 
 impl Encode<MySql> for bool {
     fn encode(&self, ty: &MySqlTypeInfo, out: &mut MySqlOutput<'_>) -> encode::Result<()> {