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// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
use super::dispatch_json::{blocking_json, Deserialize, JsonOp, Value};
use crate::deno_error::bad_resource;
use crate::ops::json_op;
use crate::repl;
use crate::repl::Repl;
use crate::state::State;
use deno_core::*;
use std::sync::Arc;
use std::sync::Mutex;
pub fn init(i: &mut Isolate, s: &State) {
i.register_op(
"repl_start",
s.core_op(json_op(s.stateful_op(op_repl_start))),
);
i.register_op(
"repl_readline",
s.core_op(json_op(s.stateful_op(op_repl_readline))),
);
}
struct ReplResource(Arc<Mutex<Repl>>);
#[derive(Deserialize)]
#[serde(rename_all = "camelCase")]
struct ReplStartArgs {
history_file: String,
}
fn op_repl_start(
state: &State,
args: Value,
_zero_copy: Option<ZeroCopyBuf>,
) -> Result<JsonOp, ErrBox> {
let args: ReplStartArgs = serde_json::from_value(args)?;
debug!("op_repl_start {}", args.history_file);
let history_path =
repl::history_path(&state.borrow().global_state.dir, &args.history_file);
let repl = repl::Repl::new(history_path);
let mut state = state.borrow_mut();
let resource = ReplResource(Arc::new(Mutex::new(repl)));
let rid = state.resource_table.add("repl", Box::new(resource));
Ok(JsonOp::Sync(json!(rid)))
}
#[derive(Deserialize)]
struct ReplReadlineArgs {
rid: i32,
prompt: String,
}
fn op_repl_readline(
state: &State,
args: Value,
_zero_copy: Option<ZeroCopyBuf>,
) -> Result<JsonOp, ErrBox> {
let args: ReplReadlineArgs = serde_json::from_value(args)?;
let rid = args.rid as u32;
let prompt = args.prompt;
debug!("op_repl_readline {} {}", rid, prompt);
let state = state.borrow();
let resource = state
.resource_table
.get::<ReplResource>(rid)
.ok_or_else(bad_resource)?;
let repl = resource.0.clone();
blocking_json(false, move || {
let line = repl.lock().unwrap().readline(&prompt)?;
Ok(json!(line))
})
}
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