wip

src/local.rs

@@ -31,3 +31,14 @@ impl<'sc, T> DerefMut for Local<'sc, T> {
     unsafe { self.0.as_mut() }
   }
 }
+
+/// For example, to allow automated conversion from Local<String> to
+/// Local<Value>
+impl<'sc, T, U> From<Local<'sc, T>> for Local<'sc, U>
+where
+  T: Deref<Target = U>,
+{
+  fn from(v: Local<'sc, T>) -> Local<'sc, U> {
+    unsafe { std::mem::transmute(v) }
+  }
+}

src/script.cc

@@ -6,6 +6,9 @@
 using namespace v8;
 using namespace support;
 
+static_assert(sizeof(ScriptOrigin) == sizeof(size_t) * 7,
+              "ScriptOrigin size mismatch");
+
 extern "C" {
 Script* v8__Script__Compile(Context* context,
                             String* source,

src/script.rs

@@ -9,7 +9,7 @@ use crate::String;
 use crate::Value;
 
 #[repr(C)]
-pub struct ScriptOrigin([usize; 3]);
+pub struct ScriptOrigin([usize; 7]);
 
 extern "C" {
   fn v8__Script__Compile(

tests/test_api.rs

@@ -150,6 +150,7 @@ fn script_origin() {
 
     let resource_name =
       v8::String::new(s, "foo.js", Default::default()).unwrap();
+
     let script_origin = v8::ScriptOrigin::new(resource_name);
 
     let source = v8::String::new(s, "1+2", Default::default()).unwrap();