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https://github.com/denoland/deno.git
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7c2e7c6608
Provides a concrete state type that can be dynamically added. This is necessary for op crates. * renames BasicState to OpState * async ops take `Rc<RefCell<OpState>>` * sync ops take `&mut OpState` * removes `OpRegistry`, `OpRouter` traits * `get_error_class_fn` moved to OpState * ResourceTable moved to OpState
75 lines
1.9 KiB
Rust
75 lines
1.9 KiB
Rust
// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
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use crate::repl;
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use crate::repl::Repl;
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use deno_core::BufVec;
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use deno_core::ErrBox;
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use deno_core::OpState;
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use deno_core::ZeroCopyBuf;
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use serde_derive::Deserialize;
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use serde_json::Value;
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use std::cell::RefCell;
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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(rt: &mut deno_core::JsRuntime) {
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super::reg_json_sync(rt, "op_repl_start", op_repl_start);
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super::reg_json_async(rt, "op_repl_readline", 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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state: &mut OpState,
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args: Value,
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_zero_copy: &mut [ZeroCopyBuf],
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) -> Result<Value, 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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let cli_state = super::cli_state(state);
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repl::history_path(&cli_state.global_state.dir, &args.history_file)
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};
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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 rid = state.resource_table.add("repl", Box::new(resource));
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Ok(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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async fn op_repl_readline(
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state: Rc<RefCell<OpState>>,
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args: Value,
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_zero_copy: BufVec,
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) -> Result<Value, 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 repl = {
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let state = state.borrow();
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let resource = state
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.resource_table
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.get::<ReplResource>(rid)
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.ok_or_else(ErrBox::bad_resource_id)?;
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resource.0.clone()
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};
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tokio::task::spawn_blocking(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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.await
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.unwrap()
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}
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