`r#self` cannot be a raw identifier

[PonasKovas]

Bug Description

Sorry for low quality report, I'm a bit focused on other things right now but thought better to do this than nothing.

Defining a struct with a field named self in slint results in a panic in when building the rust crate.

export struct PlayerData {
    name: string,
    self: bool,
}

error: failed to run custom build command for `slint-rust-template v0.1.0 (/home/mykolas/Projects/rust/slint-playtest)`
note: To improve backtraces for build dependencies, set the CARGO_PROFILE_RELEASE_BUILD_OVERRIDE_DEBUG=true environment variable to enable debug information generation.

Caused by:
  process didn't exit successfully: `/home/mykolas/Projects/rust/slint-playtest/target/release/build/slint-rust-template-54020ec4c4283cc6/build-script-build` (exit status: 101)
  --- stderr

  thread 'main' panicked at /home/mykolas/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/quote-1.0.40/src/runtime.rs:442:9:
  `r#self` cannot be a raw identifier
  stack backtrace:
     0: __rustc::rust_begin_unwind
     1: core::panicking::panic_fmt
     2: proc_macro2::fallback::validate_ident_raw
     3: proc_macro2::fallback::Ident::new_raw_checked
     4: proc_macro2::imp::Ident::new_raw_checked
     5: proc_macro2::Ident::new_raw
     6: quote::__private::ident_maybe_raw
     7: quote::__private::mk_ident
     8: i_slint_compiler::generator::rust::ident
     9: i_slint_compiler::generator::rust::generate_struct::{{closure}}
    10: core::iter::adapters::map::map_fold::{{closure}}
    11: core::iter::traits::iterator::Iterator::fold
    12: <core::iter::adapters::map::Map<I,F> as core::iter::traits::iterator::Iterator>::fold
    13: core::iter::traits::collect::default_extend_tuple_b
    14: <Iter as core::iter::traits::collect::TraitB<EB,EA>>::extend
    15: core::iter::traits::iterator::Iterator::unzip
    16: i_slint_compiler::generator::rust::generate_struct
    17: i_slint_compiler::generator::rust::generate::{{closure}}
    18: core::iter::adapters::filter_map::filter_map_fold::{{closure}}
    19: <core::slice::iter::Iter<T> as core::iter::traits::iterator::Iterator>::fold
    20: <core::iter::adapters::filter_map::FilterMap<I,F> as core::iter::traits::iterator::Iterator>::fold
    21: core::iter::traits::collect::default_extend_tuple_b
    22: <Iter as core::iter::traits::collect::TraitB<EB,EA>>::extend
    23: core::iter::traits::iterator::Iterator::unzip
    24: i_slint_compiler::generator::rust::generate
    25: slint_build::compile_with_output_path
    26: slint_build::compile_with_config
    27: build_script_build::main
    28: core::ops::function::FnOnce::call_once
  note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

Reproducible Code (if applicable)

Environment Details

• Slint Version: 1.8.0
• Platform/OS:
• Programming Language: Rust
• Backend/Renderer:

Product Impact

minor inconvenience

[ogoffart]

Thanks for the bug report.

That's right that for some reason (not sure why), r#self (and r#Self) is not allowed, which is a bit annoying.

So if a struct has a self or Self member, we will have a compilation error. Not sure how to fix it. Maybe rename it to self_ or something like that? (but then what if there is also a member called self_?)

Edit: Also r#super, r#extern and r#crate are not allowed