50 lines
1.2 KiB
Rust
50 lines
1.2 KiB
Rust
//! This is a bare-bones `no-std` application that evaluates
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//! a simple expression and uses the result as the return value.
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#![no_std]
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#![feature(alloc_error_handler, start, core_intrinsics, lang_items, link_cfg)]
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extern crate alloc;
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extern crate wee_alloc;
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#[global_allocator]
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static ALLOC: wee_alloc::WeeAlloc = wee_alloc::WeeAlloc::INIT;
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// NB: Rust needs a CRT runtime on Windows MSVC.
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#[cfg(all(windows, target_env = "msvc"))]
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#[link(name = "msvcrt")]
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#[link(name = "libcmt")]
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extern {}
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use rhai::{Engine, INT};
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#[start]
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fn main(_argc: isize, _argv: *const *const u8) -> isize {
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// Notice that this is a _raw_ engine.
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// To do anything useful, load a few packages from `rhai::packages`.
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let engine = Engine::new_raw();
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// Evaluate a simple expression: 40 + 2
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engine.eval_expression::<INT>("40 + 2").unwrap() as isize
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}
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#[alloc_error_handler]
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fn foo(_: core::alloc::Layout) -> ! {
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core::intrinsics::abort();
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}
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#[panic_handler]
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#[lang = "panic_impl"]
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extern "C" fn rust_begin_panic(_: &core::panic::PanicInfo) -> ! {
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core::intrinsics::abort();
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}
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#[lang = "eh_personality"]
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extern "C" fn eh_personality() {}
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#[no_mangle]
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extern "C" fn rust_eh_register_frames() {}
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#[no_mangle]
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extern "C" fn rust_eh_unregister_frames() {}
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