rust: pin-init: internal: init: support tuple structs in `[pin_]init!`

Extend the initializer syntax so that a field can be named by an index,
addressing tuple struct fields the same way a struct expression does:

    pin_init!(Foo { 0: value, 1 <- initializer })

Tuple fields are not exposed by a `let` binding to the fields after them,
since they have no name to bind; `_0` would shadow a user variable.

Signed-off-by: Mohamad Alsadhan <mo@sdhn.cc>
[ Fixed incorrect index calculation and cleaned up the code - Gary ]
Link: https://patch.msgid.link/20260904-tuple-struct-v1-3-72c50bd037fd@garyguo.net
Signed-off-by: Gary Guo <gary@garyguo.net>

0 files changed, 0 insertions, 0 deletions