From 8b590695bb41107a00e7a41c250aba86880b331a Mon Sep 17 00:00:00 2001
From: Helmut Merz <helmutm@cy55.de>
Date: Thu, 4 Jun 2026 21:05:50 +0200
Subject: [PATCH] macro fields_info(), to be used for logging

---
 lib/util.ex        |  9 +++++++++
 test/util_test.exs | 15 +++++++++++++++
 2 files changed, 24 insertions(+)
 create mode 100644 lib/util.ex
 create mode 100644 test/util_test.exs

diff --git a/lib/util.ex b/lib/util.ex
new file mode 100644
index 0000000..14a20f3
--- /dev/null
+++ b/lib/util.ex
@@ -0,0 +1,9 @@
+defmodule Scopes.Util do
+
+  defmacro fields_info(fields) do
+    names = for {f, _, _} <- fields do f end
+    quote do
+      Enum.zip(unquote(names), unquote(fields))
+    end
+  end
+end
diff --git a/test/util_test.exs b/test/util_test.exs
new file mode 100644
index 0000000..98ddfb5
--- /dev/null
+++ b/test/util_test.exs
@@ -0,0 +1,15 @@
+defmodule Scopes.UtilTest do
+  use ExUnit.Case, async: true
+
+  alias Scopes.Util
+  require Scopes.Util
+
+  describe "info:" do
+    test "fields" do
+      a = 17
+      b = 22
+      c = 42
+      assert [a: 17, b: 22, c: 42] = Util.fields_info([a, b, c])
+    end
+  end
+end