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use core::fmt; /// ## WARNING /// /// This **will** leak memory without careful planning, as it does not run any destructors! /// You need to make sure that all scopes end before calling this! /// You can use /// /// ```rust /// fn main() { /// { /// // Main code /// let a = vec![5]; /// } /// ndless::process::abort(); /// } /// ``` /// to ensure that no memory leaks. pub fn abort() -> ! { unsafe { ndless_sys::abort() } } /// ## WARNING /// /// This **will** leak memory without careful planning, as it does not run any destructors! /// You need to make sure that all scopes end before calling this! /// You can either use /// /// ```rust /// fn main() { /// { /// // Main code /// let a = vec![5]; /// } /// ndless::process::exit(1); /// } /// ``` /// or /// ```rust /// fn main() { /// ndless::process::exit({ /// // Main code /// let a = vec![5]; /// 0 /// }); /// } /// ``` /// to ensure that no memory leaks. pub fn exit(code: i32) -> ! { unsafe { ndless_sys::exit(code) } } /// A trait for implementing arbitrary return types in the `main` function. /// /// The c-main function only supports to return integers as return type. /// So, every type implementing the `Termination` trait has to be converted /// to an integer. /// /// The default implementations are returning 0 to indicate /// a successful execution. In case of a failure, 1 is returned. pub trait Termination { /// Is called to get the representation of the value as status code. /// This status code is returned to the operating system. fn report(self) -> i32; } impl Termination for () { #[inline] fn report(self) -> i32 { 0 } } impl Termination for i32 { #[inline] fn report(self) -> i32 { self } } impl<E: fmt::Debug> Termination for Result<(), E> { fn report(self) -> i32 { match self { Ok(()) => ().report(), Err(err) => Err::<!, _>(err).report(), } } } impl Termination for ! { fn report(self) -> i32 { self } } impl<E: fmt::Debug> Termination for Result<!, E> { fn report(self) -> i32 { let err = match self { Err(err) => err, _ => unreachable!(), }; crate::msg::msg("Error", &alloc::format!("Error: {:?}", err)); 1 } }