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feat: impl Append for lots of tuples

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This commit is contained in:
LLFourn 2023-09-05 07:53:50 +08:00
parent c56728ff13
commit 4104206980
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1 changed files with 24 additions and 15 deletions
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39
crates/chain/src/tx_data_traits.rs
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@ -91,14 +91,6 @@ pub trait Append {
fn is_empty(&self) -> bool; fn is_empty(&self) -> bool;
} }
impl Append for () {
fn append(&mut self, _other: Self) {}
fn is_empty(&self) -> bool {
true
}
}
impl<K: Ord, V> Append for BTreeMap<K, V> { impl<K: Ord, V> Append for BTreeMap<K, V> {
fn append(&mut self, mut other: Self) { fn append(&mut self, mut other: Self) {
BTreeMap::append(self, &mut other) BTreeMap::append(self, &mut other)
@ -129,13 +121,30 @@ impl<T> Append for Vec<T> {
} }
} }
impl<A: Append, B: Append> Append for (A, B) { macro_rules! impl_append_for_tuple {
fn append(&mut self, other: Self) { ($($a:ident $b:tt)*) => {
Append::append(&mut self.0, other.0); impl<$($a),*> Append for ($($a,)*) where $($a: Append),* {
Append::append(&mut self.1, other.1);
}
fn is_empty(&self) -> bool { fn append(&mut self, _other: Self) {
Append::is_empty(&self.0) && Append::is_empty(&self.1) $(Append::append(&mut self.$b, _other.$b) );*
}
fn is_empty(&self) -> bool {
$(Append::is_empty(&self.$b) && )* true
}
}
} }
} }
impl_append_for_tuple!();
impl_append_for_tuple!(T0 0);
impl_append_for_tuple!(T0 0 T1 1);
impl_append_for_tuple!(T0 0 T1 1 T2 2);
impl_append_for_tuple!(T0 0 T1 1 T2 2 T3 3);
impl_append_for_tuple!(T0 0 T1 1 T2 2 T3 3 T4 4);
impl_append_for_tuple!(T0 0 T1 1 T2 2 T3 3 T4 4 T5 5);
impl_append_for_tuple!(T0 0 T1 1 T2 2 T3 3 T4 4 T5 5 T6 6);
impl_append_for_tuple!(T0 0 T1 1 T2 2 T3 3 T4 4 T5 5 T6 6 T7 7);
impl_append_for_tuple!(T0 0 T1 1 T2 2 T3 3 T4 4 T5 5 T6 6 T7 7 T8 8);
impl_append_for_tuple!(T0 0 T1 1 T2 2 T3 3 T4 4 T5 5 T6 6 T7 7 T8 8 T9 9);
impl_append_for_tuple!(T0 0 T1 1 T2 2 T3 3 T4 4 T5 5 T6 6 T7 7 T8 8 T9 9 T10 10);