43 lines
1.2 KiB
Rust
43 lines
1.2 KiB
Rust
extern crate rhai;
|
|
|
|
use std::fmt::Display;
|
|
use std::process::exit;
|
|
use std::io::{stdin, stdout, Write};
|
|
use rhai::{Engine, FnRegister, Scope};
|
|
|
|
fn showit<T: Display>(x: &mut T) -> () {
|
|
println!("{}", x)
|
|
}
|
|
|
|
fn quit() {
|
|
exit(0);
|
|
}
|
|
|
|
pub fn main() {
|
|
let mut engine = Engine::new();
|
|
let mut scope = Scope::new();
|
|
|
|
engine.register_fn("print", showit as fn(x: &mut i32) -> ());
|
|
engine.register_fn("print", showit as fn(x: &mut i64) -> ());
|
|
engine.register_fn("print", showit as fn(x: &mut u32) -> ());
|
|
engine.register_fn("print", showit as fn(x: &mut u64) -> ());
|
|
engine.register_fn("print", showit as fn(x: &mut f32) -> ());
|
|
engine.register_fn("print", showit as fn(x: &mut f64) -> ());
|
|
engine.register_fn("print", showit as fn(x: &mut bool) -> ());
|
|
engine.register_fn("print", showit as fn(x: &mut String) -> ());
|
|
engine.register_fn("exit", quit);
|
|
|
|
loop {
|
|
print!("> ");
|
|
let mut input = String::new();
|
|
stdout().flush().expect("couldn't flush stdout");
|
|
if let Err(e) = stdin().read_line(&mut input) {
|
|
println!("input error: {}", e);
|
|
}
|
|
|
|
if let Err(e) = engine.consume_with_scope(&mut scope, &input) {
|
|
println!("error: {}", e);
|
|
}
|
|
}
|
|
}
|