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// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
use crate::ops;
use crate::state::State;
use crate::web_worker::WebWorker;
use core::task::Context;
use deno_core;
use deno_core::ErrBox;
use deno_core::StartupData;
use futures::future::Future;
use futures::future::FutureExt;
use std::ops::Deref;
use std::ops::DerefMut;
use std::pin::Pin;
use std::task::Poll;
/// This worker is used to host TypeScript and WASM compilers.
///
/// It provides minimal set of ops that are necessary to facilitate
/// compilation.
///
/// NOTE: This worker is considered priveleged, because it may
/// access file system without permission check.
///
/// At the moment this worker is meant to be single-use - after
/// performing single compilation/bundling it should be destroyed.
///
/// TODO(bartlomieju): add support to reuse the worker - or in other
/// words support stateful TS compiler
pub struct CompilerWorker(WebWorker);
impl CompilerWorker {
pub fn new(name: String, startup_data: StartupData, state: State) -> Self {
let state_ = state.clone();
let mut worker = WebWorker::new(name, startup_data, state_);
{
let isolate = &mut worker.isolate;
ops::compiler::init(isolate, &state);
// TODO(bartlomieju): CompilerWorker should not
// depend on those ops
ops::os::init(isolate, &state);
ops::fs::init(isolate, &state);
}
Self(worker)
}
}
impl Deref for CompilerWorker {
type Target = WebWorker;
fn deref(&self) -> &Self::Target {
&self.0
}
}
impl DerefMut for CompilerWorker {
fn deref_mut(&mut self) -> &mut Self::Target {
&mut self.0
}
}
impl Future for CompilerWorker {
type Output = Result<(), ErrBox>;
fn poll(self: Pin<&mut Self>, cx: &mut Context) -> Poll<Self::Output> {
let inner = self.get_mut();
inner.0.poll_unpin(cx)
}
}
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