src: put (de)serialization code into node_snapshotable.h/cc

So that it's easier to find the corresponding code.

PR-URL: https://github.com/nodejs/node/pull/37114
Refs: https://github.com/nodejs/node/pull/36943
Reviewed-By: Juan José Arboleda <soyjuanarbol@gmail.com>

1 files changed, 39 insertions, 0 deletions

diff --git a/src/node_snapshotable.cc b/src/node_snapshotable.cc
new file mode 100644
index 00000000000..21de1086856
--- /dev/null
+++ b/src/node_snapshotable.cc
@@ -0,0 +1,39 @@
+
+#include "node_snapshotable.h"
+#include "base_object-inl.h"
+
+namespace node {
+
+using v8::Local;
+using v8::Object;
+using v8::StartupData;
+
+void DeserializeNodeInternalFields(Local<Object> holder,
+                                   int index,
+                                   v8::StartupData payload,
+                                   void* env) {
+  if (payload.raw_size == 0) {
+    holder->SetAlignedPointerInInternalField(index, nullptr);
+    return;
+  }
+  // No embedder object in the builtin snapshot yet.
+  UNREACHABLE();
+}
+
+StartupData SerializeNodeContextInternalFields(Local<Object> holder,
+                                               int index,
+                                               void* env) {
+  void* ptr = holder->GetAlignedPointerFromInternalField(index);
+  if (ptr == nullptr || ptr == env) {
+    return StartupData{nullptr, 0};
+  }
+  if (ptr == env && index == ContextEmbedderIndex::kEnvironment) {
+    return StartupData{nullptr, 0};
+  }
+
+  // No embedder objects in the builtin snapshot yet.
+  UNREACHABLE();
+  return StartupData{nullptr, 0};
+}
+
+}  // namespace node