Update generator to work with python 3.12

.github/workflows/rust.yml

@@ -29,4 +29,4 @@ jobs:
           export FLATDATA_GENERATOR_PATH=${PWD}/flatdata-generator
           cd flatdata-rs
           cargo test --all-targets
-          cargo test --all-targets --all-features
+          cargo test --all-targets --all-features

flatdata-generator/flatdata/generator/engine.py

@@ -3,7 +3,7 @@
  See the LICENSE file in the root of this project for license details.
 '''
 
-import imp
+import types
 
 from flatdata.generator.tree.builder import build_ast
 from flatdata.generator.tree.nodes.trivial.namespace import Namespace
@@ -70,7 +70,7 @@ def render_python_module(self, module_name=None, archive_name=None):
         """
         root_namespace = self._find_root_namespace(self.tree)
         module_code = self.render("py")
-        module = imp.new_module(module_name if module_name is not None else root_namespace.name)
+        module = types.ModuleType(module_name if module_name is not None else root_namespace.name)
         #pylint: disable=exec-used
         exec(module_code, module.__dict__)
         if archive_name is None:

flatdata-generator/pyproject.toml

@@ -1,6 +1,36 @@
 [build-system]
-requires = [
-    "setuptools>=42",
-    "wheel"
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
+[project]
+name = "flatdata-generator"
+version = "0.4.6"
+description = "Generate source code for C++, Rust, Go or Python from a Flatdata schema file"
+readme = "README.md"
+license = ""
+authors = [
+    { name = "Flatdata Developers" },
 ]
-build-backend = "setuptools.build_meta"
+classifiers = [
+    "License :: OSI Approved :: Apache Software License",
+    "Operating System :: OS Independent",
+    "Programming Language :: Python :: 3",
+]
+dependencies = [
+    "jinja2>=2.2",
+    "pyparsing>=2.0",
+]
+
+[project.scripts]
+flatdata-generator = "flatdata.generator.app:main"
+
+[project.urls]
+Homepage = "https://github.com/heremaps/flatdata"
+
+[tool.hatch.build.targets.sdist]
+include = [
+    "/flatdata",
+]
+
+[tool.hatch.build.targets.wheel]
+packages = ["flatdata"]

flatdata-rs/lib/src/arrayview.rs

@@ -102,15 +102,15 @@ mod test {
 
         let x = {
             // test clone and lifetime of returned reference
-            let view_copy = view.clone();
+            let view_copy = view;
             &view_copy[0]
         };
         assert_eq!(65535, x.x());
         assert_eq!(65535, x.y());
 
         let x = {
             // test clone and lifetime of returned reference
-            let view_copy = view.clone();
+            let view_copy = view;
             view_copy.iter().next().unwrap()
         };
         assert_eq!(65535, x.x());