Macro call_constructor

macro_rules! call_constructor {
    ($compiled:path [$pre_transform:ident => $transform:expr], $any:path, $buffer:path, $provider:expr $(, $args:expr)* $(,)?) => { ... };
    ($compiled:path, $any:path, $buffer:path, $provider:expr $(, $args:expr)* $(,)?) => { ... };
}