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#[macro_export]
macro_rules! replace_self {
// Actually replace any self in the token stream
(
$self:ident,
{
{
{
self
$($rest:tt)*
}
[$($expanded:tt)*]
}
}
) => {
replace_self! {$self, {
{
{
$($rest)*
}
[$($expanded)*
$self
]
}
}}
};
// Do nothing if there is no self
(
$self:ident,
{
{
{
$chunk:tt
$($rest:tt)*
}
[$($expanded:tt)*]
}
}
) => {
replace_self! {$self, {
{
{
$($rest)*
}
[$($expanded)*
$chunk
]
}
}}
};
// Result
(
$self:ident,
{
{
{}
[$($expanded:tt)*]
}
}
) => {
$($expanded)*
};
// Entry point
(
$self:ident,
$($e:tt)*
) => {
replace_self! {$self, {
{{ $($e)* }[]}
}}
};
}