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