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5c1deac0cf
Towards simplifying (or better removing entirely) the CoreResource trait. Resources should be any bit of privileged heap allocated memory that needs to be referenced from JS, not very specific trait implementations. Therefore CoreResource should be pushed towards being as general as possible.
75 lines
2 KiB
Rust
75 lines
2 KiB
Rust
// Copyright 2018-2019 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::deno_error::bad_resource;
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use crate::ops::json_op;
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use crate::repl;
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use crate::repl::Repl;
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use crate::resources;
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use crate::resources::CoreResource;
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use crate::state::ThreadSafeState;
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use deno::*;
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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 Isolate, s: &ThreadSafeState) {
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i.register_op(
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"repl_start",
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s.core_op(json_op(s.stateful_op(op_repl_start))),
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);
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i.register_op(
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"repl_readline",
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s.core_op(json_op(s.stateful_op(op_repl_readline))),
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);
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}
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struct ReplResource(Arc<Mutex<Repl>>);
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impl CoreResource for ReplResource {}
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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: &ThreadSafeState,
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args: Value,
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_zero_copy: Option<PinnedBuf>,
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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 table = resources::lock_resource_table();
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let rid = 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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_state: &ThreadSafeState,
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args: Value,
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_zero_copy: Option<PinnedBuf>,
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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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blocking_json(false, move || {
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let table = resources::lock_resource_table();
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let resource = table.get::<ReplResource>(rid).ok_or_else(bad_resource)?;
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let repl = resource.0.clone();
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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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