macro_rules! decoder_parameterized_value {
(impl<$lt:lifetime $(, $generic:ident)*> $ty:ty {
fn decode($tag:ident: $tag_ty:ty, $buffer:ident: Buffer) -> Result<$ret:ty> $impl:block
}) => { ... };
}
macro_rules! decoder_parameterized_value {
(impl<$lt:lifetime $(, $generic:ident)*> $ty:ty {
fn decode($tag:ident: $tag_ty:ty, $buffer:ident: Buffer) -> Result<$ret:ty> $impl:block
}) => { ... };
}