2020-07-21 17:08:46 +02:00
|
|
|
//! This is a `no-std` application for the that evaluates
|
2020-07-21 16:32:24 +02:00
|
|
|
//! a simple expression and uses the result as the return value.
|
|
|
|
|
|
|
|
#![no_std]
|
|
|
|
#![feature(alloc_error_handler, start, core_intrinsics, lang_items)]
|
|
|
|
|
|
|
|
extern crate alloc;
|
|
|
|
extern crate wee_alloc;
|
|
|
|
|
|
|
|
#[global_allocator]
|
|
|
|
static ALLOC: wee_alloc::WeeAlloc = wee_alloc::WeeAlloc::INIT;
|
|
|
|
|
|
|
|
use rhai::{Engine, INT};
|
|
|
|
|
|
|
|
#[start]
|
|
|
|
fn main(_argc: isize, _argv: *const *const u8) -> isize {
|
|
|
|
let engine = Engine::new();
|
|
|
|
|
|
|
|
// Evaluate a simple expression: 40 + 2
|
|
|
|
engine.eval::<INT>("40 + 2").unwrap() as isize
|
|
|
|
}
|
|
|
|
|
|
|
|
#[alloc_error_handler]
|
|
|
|
fn foo(_: core::alloc::Layout) -> ! {
|
|
|
|
core::intrinsics::abort();
|
|
|
|
}
|
|
|
|
|
|
|
|
#[panic_handler]
|
|
|
|
#[lang = "panic_impl"]
|
|
|
|
extern "C" fn rust_begin_panic(_: &core::panic::PanicInfo) -> ! {
|
|
|
|
core::intrinsics::abort();
|
|
|
|
}
|
|
|
|
|
|
|
|
#[lang = "eh_personality"]
|
|
|
|
extern "C" fn eh_personality() {}
|
|
|
|
|
|
|
|
#[no_mangle]
|
|
|
|
extern "C" fn rust_eh_register_frames() {}
|
|
|
|
|
|
|
|
#[no_mangle]
|
|
|
|
extern "C" fn rust_eh_unregister_frames() {}
|