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// This file is part of ICU4X. For terms of use, please see the file
// called LICENSE at the top level of the ICU4X source tree
// (online at: https://github.com/unicode-org/icu4x/blob/main/LICENSE ).

// https://github.com/unicode-org/icu4x/blob/main/docs/process/boilerplate.md#library-annotations
#![no_std]
#![cfg_attr(
    not(test),
    deny(
        clippy::indexing_slicing,
        clippy::unwrap_used,
        clippy::expect_used,
        clippy::panic,
        clippy::exhaustive_structs,
        clippy::exhaustive_enums,
        missing_debug_implementations,
    )
)]
#![allow(clippy::upper_case_acronyms)]
#![cfg_attr(target_os = "none", feature(alloc_error_handler))]

// Necessary to for symbols to be linked in
extern crate icu_capi;

// CFG it off so that it doesn't break the --all-features build due to needing unstable rust
#[cfg(target_os = "none")]
mod stuff {
    extern crate alloc;

    use alloc::alloc::Layout;
    use core::panic::PanicInfo;
    use cortex_m::asm;
    use freertos_rust::FreeRtosAllocator;

    #[global_allocator]
    static GLOBAL: FreeRtosAllocator = FreeRtosAllocator;

    #[alloc_error_handler]
    fn alloc_error(_layout: Layout) -> ! {
        asm::bkpt();
        loop {}
    }

    #[cfg(target_os = "none")]
    #[panic_handler]
    fn panic(_info: &PanicInfo) -> ! {
        loop {}
    }
}

// Needed for rust runtime stuff
//
// renamed so you can't accidentally use it
#[cfg(not(target_os = "none"))]
extern crate std as rust_std;