1 files changed, 47 insertions, 0 deletions
diff --git a/core/libdeno/snapshot_creator.cc b/core/libdeno/snapshot_creator.cc
new file mode 100644
index 000000000..19098392d
--- /dev/null
+++ b/core/libdeno/snapshot_creator.cc
@@ -0,0 +1,47 @@
+// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
+// Hint: --trace_serializer is a useful debugging flag.
+#include <fstream>
+#include <iostream>
+#include "deno.h"
+#include "file_util.h"
+#include "internal.h"
+#include "third_party/v8/include/v8.h"
+#include "third_party/v8/src/base/logging.h"
+
+namespace deno {}  // namespace deno
+
+int main(int argc, char** argv) {
+  const char* snapshot_out_bin = argv[1];
+  const char* js_fn = argv[2];
+
+  deno_set_v8_flags(&argc, argv);
+
+  CHECK_NOT_NULL(js_fn);
+  CHECK_NOT_NULL(snapshot_out_bin);
+
+  std::string js_source;
+  CHECK(deno::ReadFileToString(js_fn, &js_source));
+
+  deno_init();
+  deno_config config = {1, deno::empty_buf, deno::empty_buf, nullptr};
+  Deno* d = deno_new(config);
+
+  deno_execute(d, nullptr, js_fn, js_source.c_str());
+  if (deno_last_exception(d) != nullptr) {
+    std::cerr << "Snapshot Exception " << std::endl;
+    std::cerr << deno_last_exception(d) << std::endl;
+    deno_delete(d);
+    return 1;
+  }
+
+  auto snapshot = deno_get_snapshot(d);
+
+  std::ofstream file_(snapshot_out_bin, std::ios::binary);
+  file_.write(reinterpret_cast<char*>(snapshot.data_ptr), snapshot.data_len);
+  file_.close();
+
+  delete[] snapshot.data_ptr;
+  deno_delete(d);
+
+  return file_.bad();
+}