1 files changed, 48 insertions, 0 deletions
diff --git a/serde_v8/magic/value.rs b/serde_v8/magic/value.rs
new file mode 100644
index 000000000..5d844fbda
--- /dev/null
+++ b/serde_v8/magic/value.rs
@@ -0,0 +1,48 @@
+// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
+
+use crate::magic::transl8::impl_magic;
+use crate::magic::transl8::FromV8;
+use crate::magic::transl8::ToV8;
+use std::mem::transmute;
+
+/// serde_v8::Value allows passing through `v8::Value`s untouched
+/// when de/serializing & allows mixing rust & v8 values in structs, tuples...
+//
+// SAFETY: caveat emptor, the rust-compiler can no longer link lifetimes to their
+// original scope, you must take special care in ensuring your handles don't outlive their scope
+pub struct Value<'s> {
+  pub v8_value: v8::Local<'s, v8::Value>,
+}
+impl_magic!(Value<'_>);
+
+impl<'s> From<v8::Local<'s, v8::Value>> for Value<'s> {
+  fn from(v8_value: v8::Local<'s, v8::Value>) -> Self {
+    Self { v8_value }
+  }
+}
+
+impl<'s> From<Value<'s>> for v8::Local<'s, v8::Value> {
+  fn from(v: Value<'s>) -> Self {
+    v.v8_value
+  }
+}
+
+impl ToV8 for Value<'_> {
+  fn to_v8<'a>(
+    &self,
+    _scope: &mut v8::HandleScope<'a>,
+  ) -> Result<v8::Local<'a, v8::Value>, crate::Error> {
+    // SAFETY: not fully safe, since lifetimes are detached from original scope
+    Ok(unsafe { transmute(self.v8_value) })
+  }
+}
+
+impl FromV8 for Value<'_> {
+  fn from_v8(
+    _scope: &mut v8::HandleScope,
+    value: v8::Local<v8::Value>,
+  ) -> Result<Self, crate::Error> {
+    // SAFETY: not fully safe, since lifetimes are detached from original scope
+    Ok(unsafe { transmute::<Value, Value>(value.into()) })
+  }
+}