Elixir 1.18 tweaks and CI

.github/workflows/main.yml

@@ -85,6 +85,8 @@ jobs:
     strategy:
       matrix:
         pair:
+          - { erlang: "27", elixir: "1.18.0-rc.0" }
+          - { erlang: "26", elixir: "1.18.0-rc.0" }
           - { erlang: "27", elixir: "1.17", latest: true }
           - { erlang: "26", elixir: "1.17" }
           - { erlang: "26", elixir: "1.16" }

rustler_mix/lib/mix/tasks/rustler.new.ex

@@ -24,7 +24,7 @@ defmodule Mix.Tasks.Rustler.New do
   root = Path.join(:code.priv_dir(:rustler), "templates/")
 
   for {format, source, _} <- @basic do
-    unless format == :keep do
+    if format != :keep do
       @external_resource Path.join(root, source)
       defp render(unquote(source)), do: unquote(File.read!(Path.join(root, source)))
     end
@@ -90,7 +90,7 @@ defmodule Mix.Tasks.Rustler.New do
   end
 
   defp check_module_name_validity!(name) do
-    unless name =~ ~r/^[A-Z]\w*(\.[A-Z]\w*)*$/ do
+    if !(name =~ ~r/^[A-Z]\w*(\.[A-Z]\w*)*$/) do
       Mix.raise(
         "Module name must be a valid Elixir alias (for example: Foo.Bar), got: #{inspect(name)}"
       )

rustler_mix/lib/rustler.ex

@@ -113,44 +113,43 @@ defmodule Rustler do
     end
   end
 
-  defmacro __before_compile__(_env) do
+  defmacro __before_compile__(env) do
     default_load_data_value = %Rustler.Compiler.Config{}.load_data
     default_fun_value = %Rustler.Compiler.Config{}.load_data_fun
 
-    quote do
-      @on_load :rustler_init
-
-      defmacrop _construct_load_data do
-        default_load_data_value = unquote(default_load_data_value)
-        default_fun_value = unquote(default_fun_value)
+    load_data = Module.get_attribute(env.module, :load_data)
+    load_data_fun = Module.get_attribute(env.module, :load_data_fun)
 
-        case {@load_data, @load_data_fun} do
-          {load_data, ^default_fun_value} ->
-            quote do
-              unquote(load_data)
-            end
+    load_data =
+      case {load_data, load_data_fun} do
+        {load_data, ^default_fun_value} ->
+          quote do
+            unquote(load_data)
+          end
 
-          {^default_load_data_value, {module, function}}
-          when is_atom(module) and is_atom(function) ->
-            quote do
-              apply(unquote(module), unquote(function), [])
-            end
+        {^default_load_data_value, {module, function}}
+        when is_atom(module) and is_atom(function) ->
+          quote do
+            apply(unquote(module), unquote(function), [])
+          end
 
-          {^default_load_data_value, provided_value} ->
-            raise """
-            `load_data` has to be `{Module, :function}`.
-            Instead received: #{inspect(provided_value)}
-            """
-
-          {load_data, load_data_fun} ->
-            raise """
-            Only `load_data` or `load_data_fun` can be provided. Instead received:
-            >>> load_data: #{inspect(load_data)}
-            >>> load_data_fun: #{inspect(load_data_fun)}
-            """
-        end
+        {^default_load_data_value, provided_value} ->
+          raise """
+          `load_data_fun` has to be `{Module, :function}`.
+          Instead received: #{inspect(provided_value)}
+          """
+
+        {load_data, load_data_fun} ->
+          raise """
+          Only `load_data` or `load_data_fun` can be provided. Instead received:
+          >>> load_data: #{inspect(load_data)}
+          >>> load_data_fun: #{inspect(load_data_fun)}
+          """
       end
 
+    quote do
+      @on_load :rustler_init
+
       @doc false
       def rustler_init do
         # Remove any old modules that may be loaded so we don't get
@@ -164,7 +163,9 @@ defmodule Rustler do
           |> Application.app_dir(path)
           |> to_charlist()
 
-        :erlang.load_nif(load_path, _construct_load_data())
+        load_data = unquote(load_data)
+
+        :erlang.load_nif(load_path, load_data)
       end
     end
   end

rustler_mix/lib/rustler/compiler.ex

@@ -7,7 +7,7 @@ defmodule Rustler.Compiler do
   def compile_crate(otp_app, config, opts) do
     config = Config.from(otp_app, config, opts)
 
-    unless config.skip_compilation? do
+    if !config.skip_compilation? do
       crate_full_path = Path.expand(config.path, File.cwd!())
 
       File.mkdir_p!(priv_dir())
@@ -54,7 +54,7 @@ defmodule Rustler.Compiler do
       throw_error(:rustup_not_installed)
     end
 
-    unless Rustup.version_installed?(version) do
+    if !Rustup.version_installed?(version) do
       throw_error({:rust_version_not_installed, version})
     end
 
@@ -176,7 +176,7 @@ defmodule Rustler.Compiler do
   end
 
   defp toml_data(path) do
-    unless File.dir?(path) do
+    if !File.dir?(path) do
       throw_error({:nonexistent_crate_directory, path})
     end
 

rustler_tests/test/serde_rustler_tests_test.exs

@@ -69,7 +69,7 @@ defmodule SerdeRustlerTests.NifTest do
     Helpers.run_ser(test_name, expected_term)
     Helpers.run_de(test_name, expected_term)
 
-    unless ctx[:skip] == :transcode do
+    if ctx[:skip] != :transcode do
       Helpers.run_transcode(test_name, expected_term)
     end
   end