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70 lines
2 KiB
Rust
70 lines
2 KiB
Rust
// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
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use super::dispatch_json::{blocking_json, Deserialize, JsonOp, Value};
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use crate::repl;
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use crate::repl::Repl;
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use crate::state::State;
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use deno_core::CoreIsolate;
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use deno_core::CoreIsolateState;
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use deno_core::ErrBox;
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use deno_core::ZeroCopyBuf;
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use std::rc::Rc;
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use std::sync::Arc;
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use std::sync::Mutex;
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pub fn init(i: &mut CoreIsolate, s: &Rc<State>) {
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i.register_op("op_repl_start", s.stateful_json_op2(op_repl_start));
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i.register_op("op_repl_readline", s.stateful_json_op2(op_repl_readline));
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}
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struct ReplResource(Arc<Mutex<Repl>>);
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#[derive(Deserialize)]
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#[serde(rename_all = "camelCase")]
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struct ReplStartArgs {
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history_file: String,
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}
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fn op_repl_start(
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isolate_state: &mut CoreIsolateState,
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state: &Rc<State>,
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args: Value,
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_zero_copy: &mut [ZeroCopyBuf],
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) -> Result<JsonOp, ErrBox> {
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let args: ReplStartArgs = serde_json::from_value(args)?;
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debug!("op_repl_start {}", args.history_file);
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let history_path =
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repl::history_path(&state.global_state.dir, &args.history_file);
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let repl = repl::Repl::new(history_path);
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let resource = ReplResource(Arc::new(Mutex::new(repl)));
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let mut resource_table = isolate_state.resource_table.borrow_mut();
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let rid = resource_table.add("repl", Box::new(resource));
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Ok(JsonOp::Sync(json!(rid)))
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}
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#[derive(Deserialize)]
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struct ReplReadlineArgs {
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rid: i32,
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prompt: String,
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}
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fn op_repl_readline(
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isolate_state: &mut CoreIsolateState,
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_state: &Rc<State>,
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args: Value,
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_zero_copy: &mut [ZeroCopyBuf],
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) -> Result<JsonOp, ErrBox> {
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let args: ReplReadlineArgs = serde_json::from_value(args)?;
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let rid = args.rid as u32;
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let prompt = args.prompt;
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debug!("op_repl_readline {} {}", rid, prompt);
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let resource_table = isolate_state.resource_table.borrow();
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let resource = resource_table
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.get::<ReplResource>(rid)
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.ok_or_else(ErrBox::bad_resource_id)?;
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let repl = resource.0.clone();
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blocking_json(false, move || {
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let line = repl.lock().unwrap().readline(&prompt)?;
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Ok(json!(line))
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})
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}
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