Macro gluon_vm::construct_enum_gc

macro_rules! construct_enum_gc {
    (impl $typ: ident $(:: $variant: ident)? [$($acc: tt)*] [$($ptr: ident)*] @ $expr: expr, $($rest: tt)*) => { ... };
    (impl $typ: ident $(:: $variant: ident)? [$($acc: tt)*] [$($ptr: ident)*] $expr: expr, $($rest: tt)*) => { ... };
    (impl $typ: ident $(:: $variant: ident)? [$($acc: tt)*] [$($ptr: ident)*] @ $expr: expr) => { ... };
    (impl $typ: ident $(:: $variant: ident)? [$($acc: tt)*] [$($ptr: ident)*] $expr: expr) => { ... };
    (impl $typ: ident $(:: $variant: ident)? [$($acc: tt)*] [$($ptr: ident)*] ) => { ... };
}