Add generic fx-graph serializer (NPTG) (#21032)

Differential Revision: D111753288

Pull Request resolved: #21032

Author: metascroy

backends/native/BUCK

@@ -0,0 +1,31 @@
+load("@fbcode_macros//build_defs:build_file_migration.bzl", "fbcode_target")
+load("@fbsource//xplat/executorch/build:runtime_wrapper.bzl", "runtime")
+
+oncall("executorch")
+
+# Export the generic fx-graph schema so it can be shipped as a package resource.
+runtime.export_file(
+    name = "native_graph.fbs",
+    src = "serialization/native_graph.fbs",
+    visibility = ["//executorch/backends/native/..."],
+)
+
+fbcode_target(
+    _kind = runtime.python_library,
+    name = "lib",
+    typing = True,
+    srcs = [
+        "serialization/__init__.py",
+        "serialization/graph_serialize.py",
+        "serialization/schema.py",
+    ],
+    resources = {
+        ":native_graph.fbs": "serialization/native_graph.fbs",
+    },
+    visibility = ["PUBLIC"],
+    deps = [
+        "//caffe2:torch",
+        "//executorch/exir:lib",
+        "//executorch/exir/_serialize:lib",
+    ],
+)

backends/native/serialization/__init__.py

@@ -0,0 +1,27 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+#
+# This source code is licensed under the BSD-style license found in the
+# LICENSE file in the root directory of this source tree.
+
+# pyre-strict
+
+from executorch.backends.native.serialization.graph_serialize import (
+    deserialize_graph,
+    deserialize_program,
+    serialize_graph,
+    serialize_program,
+    validate_graph,
+    validate_method,
+    validate_program,
+)
+
+__all__ = [
+    "serialize_graph",
+    "serialize_program",
+    "deserialize_graph",
+    "deserialize_program",
+    "validate_graph",
+    "validate_method",
+    "validate_program",
+]