feat(serde_v8): StringOrBuffer (#12503)

1 files changed, 38 insertions, 0 deletions

diff --git a/serde_v8/src/magic/string_or_buffer.rs b/serde_v8/src/magic/string_or_buffer.rs
new file mode 100644
index 000000000..88a6344c4
--- /dev/null
+++ b/serde_v8/src/magic/string_or_buffer.rs
@@ -0,0 +1,38 @@
+use std::ops::Deref;
+
+#[derive(Debug)]
+pub struct StringOrBuffer(Vec<u8>);
+
+impl Deref for StringOrBuffer {
+  type Target = Vec<u8>;
+  fn deref(&self) -> &Vec<u8> {
+    &self.0
+  }
+}
+
+impl<'de> serde::Deserialize<'de> for StringOrBuffer {
+  fn deserialize<D>(deserializer: D) -> Result<StringOrBuffer, D::Error>
+  where
+    D: serde::Deserializer<'de>,
+  {
+    StringOrBufferInner::deserialize(deserializer)
+      .map(|x| StringOrBuffer(x.into_bytes()))
+  }
+}
+
+// TODO(@AaronO): explore if we can make this work with ZeroCopyBuf
+#[derive(serde::Deserialize)]
+#[serde(untagged)]
+enum StringOrBufferInner {
+  String(String),
+  Buffer(Vec<u8>),
+}
+
+impl StringOrBufferInner {
+  fn into_bytes(self) -> Vec<u8> {
+    match self {
+      Self::String(s) => s.into_bytes(),
+      Self::Buffer(b) => b,
+    }
+  }
+}