49 lines
1.4 KiB
Rust
49 lines
1.4 KiB
Rust
//! This example shows a simple read-evaluate-print-loop (REPL).
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use mlua::{Error, Lua, MultiValue};
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use rustyline::Editor;
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fn main() {
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let lua = Lua::new();
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let mut editor = Editor::<()>::new().expect("Failed to make rustyline editor");
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loop {
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let mut prompt = "> ";
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let mut line = String::new();
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loop {
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match editor.readline(prompt) {
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Ok(input) => line.push_str(&input),
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Err(_) => return,
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}
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match lua.load(&line).eval::<MultiValue>() {
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Ok(values) => {
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editor.add_history_entry(line);
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println!(
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"{}",
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values
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.iter()
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.map(|value| format!("{:?}", value))
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.collect::<Vec<_>>()
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.join("\t")
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);
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break;
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}
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Err(Error::SyntaxError {
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incomplete_input: true,
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..
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}) => {
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// continue reading input and append it to `line`
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line.push_str("\n"); // separate input lines
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prompt = ">> ";
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}
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Err(e) => {
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eprintln!("error: {}", e);
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break;
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}
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}
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}
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}
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}
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