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impl TryFromU64 for tuples types

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This commit is contained in:
Muhannad Alrusayni 2021-09-17 22:41:49 +03:00
parent 56dd19ef75
commit 3bf26a758a
1 changed files with 57 additions and 16 deletions
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73
src/executor/query.rs
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@ -391,15 +391,27 @@ macro_rules! try_from_u64_err {
}
}
};
}
macro_rules! try_from_u64_tuple {
( $type: ty ) => {
try_from_u64_err!(($type, $type));
try_from_u64_err!(($type, $type, $type));
( $($gen_type: ident),* ) => {
impl<$( $gen_type, )*> TryFromU64 for ($( $gen_type, )*)
where
$( $gen_type: TryFromU64, )*
{
fn try_from_u64(_: u64) -> Result<Self, DbErr> {
Err(DbErr::Exec(format!(
"{} cannot be converted from u64",
stringify!(($($gen_type,)*))
)))
}
}
};
}
// impl TryFromU64 for tuples with generic types
try_from_u64_err!(A, B);
try_from_u64_err!(A, B, C);
try_from_u64_err!(A, B, C, D);
macro_rules! try_from_u64_numeric {
( $type: ty ) => {
impl TryFromU64 for $type {
@ -414,7 +426,6 @@ macro_rules! try_from_u64_numeric {
})
}
}
try_from_u64_tuple!($type);
};
}
@ -434,19 +445,49 @@ macro_rules! try_from_u64_string {
Ok(n.to_string())
}
}
try_from_u64_tuple!($type);
};
}
try_from_u64_string!(String);
macro_rules! try_from_u64_dummy {
( $type: ty ) => {
try_from_u64_err!($type);
try_from_u64_err!(($type, $type));
try_from_u64_err!(($type, $type, $type));
};
}
#[cfg(feature = "with-uuid")]
try_from_u64_dummy!(uuid::Uuid);
try_from_u64_err!(uuid::Uuid);
// impl<A, B> TryFromU64 for (A, B)
// where
// A: TryFromU64,
// B: TryFromU64,
// {
// fn try_from_u64(_: u64) -> Result<Self, DbErr> {
// Err(DbErr::Exec(
// "(A, B) cannot be converted from u64".to_owned(),
// ))
// }
// }
// impl<A, B, C> TryFromU64 for (A, B, C)
// where
// A: TryFromU64,
// B: TryFromU64,
// C: TryFromU64,
// {
// fn try_from_u64(_: u64) -> Result<Self, DbErr> {
// Err(DbErr::Exec(
// "(A, B, C) cannot be converted from u64".to_owned(),
// ))
// }
// }
// impl<A, B, C, D> TryFromU64 for (A, B, C, D)
// where
// A: TryFromU64,
// B: TryFromU64,
// C: TryFromU64,
// D: TryFromU64,
// {
// fn try_from_u64(_: u64) -> Result<Self, DbErr> {
// Err(DbErr::Exec(
// "(A, B, C, D) cannot be converted from u64".to_owned(),
// ))
// }
// }