1 files changed, 97 insertions, 0 deletions
diff --git a/src/isolate.rs b/src/isolate.rs
new file mode 100644
index 000000000..71a633abd
--- /dev/null
+++ b/src/isolate.rs
@@ -0,0 +1,97 @@
+// Copyright 2018 the Deno authors. All rights reserved. MIT license.
+use deno_dir;
+use flags;
+use futures;
+use handlers;
+use libc::c_void;
+use libdeno;
+use std;
+use std::collections::HashMap;
+use std::ffi::CStr;
+use std::ffi::CString;
+use tokio;
+
+type DenoException<'a> = &'a str;
+
+pub struct Isolate {
+  pub ptr: *const libdeno::DenoC,
+  pub dir: deno_dir::DenoDir,
+  pub rt: tokio::runtime::current_thread::Runtime,
+  pub timers: HashMap<u32, futures::sync::oneshot::Sender<()>>,
+  pub argv: Vec<String>,
+  pub flags: flags::DenoFlags,
+}
+
+static DENO_INIT: std::sync::Once = std::sync::ONCE_INIT;
+
+impl Isolate {
+  pub fn new(argv: Vec<String>) -> Box<Isolate> {
+    DENO_INIT.call_once(|| {
+      unsafe { libdeno::deno_init() };
+    });
+
+    let (flags, argv_rest) = flags::set_flags(argv);
+
+    let mut deno_box = Box::new(Isolate {
+      ptr: 0 as *const libdeno::DenoC,
+      dir: deno_dir::DenoDir::new(flags.reload, None).unwrap(),
+      rt: tokio::runtime::current_thread::Runtime::new().unwrap(),
+      timers: HashMap::new(),
+      argv: argv_rest,
+      flags,
+    });
+
+    (*deno_box).ptr = unsafe {
+      libdeno::deno_new(
+        deno_box.as_ref() as *const _ as *const c_void,
+        handlers::msg_from_js,
+      )
+    };
+
+    deno_box
+  }
+
+  pub fn execute(
+    &mut self,
+    js_filename: &str,
+    js_source: &str,
+  ) -> Result<(), DenoException> {
+    let filename = CString::new(js_filename).unwrap();
+    let source = CString::new(js_source).unwrap();
+    let r = unsafe {
+      libdeno::deno_execute(self.ptr, filename.as_ptr(), source.as_ptr())
+    };
+    if r == 0 {
+      let ptr = unsafe { libdeno::deno_last_exception(self.ptr) };
+      let cstr = unsafe { CStr::from_ptr(ptr) };
+      return Err(cstr.to_str().unwrap());
+    }
+    Ok(())
+  }
+}
+
+impl Drop for Isolate {
+  fn drop(&mut self) {
+    unsafe { libdeno::deno_delete(self.ptr) }
+  }
+}
+
+pub fn from_c<'a>(d: *const libdeno::DenoC) -> &'a mut Isolate {
+  let ptr = unsafe { libdeno::deno_get_data(d) };
+  let ptr = ptr as *mut Isolate;
+  let isolate_box = unsafe { Box::from_raw(ptr) };
+  Box::leak(isolate_box)
+}
+
+#[test]
+fn test_c_to_rust() {
+  let argv = vec![String::from("./deno"), String::from("hello.js")];
+  let isolate = Isolate::new(argv);
+  let isolate2 = from_c(isolate.ptr);
+  assert_eq!(isolate.ptr, isolate2.ptr);
+  assert_eq!(
+    isolate.dir.root.join("gen"),
+    isolate.dir.gen,
+    "Sanity check"
+  );
+}