53 lines
1.6 KiB
Rust
53 lines
1.6 KiB
Rust
/** Serene --- Yet an other Lisp
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*
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* Copyright (c) 2020 Sameer Rahmani <lxsameer@gnu.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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use crate::runtime::RT;
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use rustyline::error::ReadlineError;
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use rustyline::Editor;
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pub fn repl(rt: RT) {
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let mut rl = Editor::<()>::new();
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let history = rt.history_file_path();
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if rl.load_history(&history).is_err() && rt.is_debug() {
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println!("No previous history.");
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}
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loop {
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let prompt = format!("{}> ", rt.current_ns().name);
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let readline = rl.readline(&prompt);
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match readline {
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Ok(line) => {
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rl.add_history_entry(line.as_str());
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println!("Line: {}", line);
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}
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Err(ReadlineError::Interrupted) => {
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println!("CTRL-C");
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break;
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}
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Err(ReadlineError::Eof) => {
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println!("CTRL-D");
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break;
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}
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Err(err) => {
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println!("Error: {:?}", err);
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break;
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}
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}
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}
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rl.save_history(&history).unwrap();
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}
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