From e3a8f5d083131005f1c7f1f0212d1d2eecfaffe4 Mon Sep 17 00:00:00 2001
From: Fabian Schmidt <fabschmidt96@gmail.com>
Date: Fri, 14 Mar 2025 13:29:25 +0100
Subject: [PATCH] Try out ctor and ctor_lite

---
 Cargo.lock  | 41 +++++++++++++++++++++++++++++++++++++++++
 Cargo.toml  |  2 ++
 Readme.md   |  6 +++++-
 src/main.rs | 44 ++++++++++++++++++++++++++++++++++++++++++--
 4 files changed, 90 insertions(+), 3 deletions(-)
 create mode 100644 Cargo.lock

diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..9146b2e
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,41 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
+[[package]]
+name = "comptime_macros"
+version = "0.1.0"
+dependencies = [
+ "ctor",
+]
+
+[[package]]
+name = "ctor"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "07e9666f4a9a948d4f1dff0c08a4512b0f7c86414b23960104c243c10d79f4c3"
+dependencies = [
+ "ctor-proc-macro",
+ "dtor",
+]
+
+[[package]]
+name = "ctor-proc-macro"
+version = "0.0.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4f211af61d8efdd104f96e57adf5e426ba1bc3ed7a4ead616e15e5881fd79c4d"
+
+[[package]]
+name = "dtor"
+version = "0.0.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "222ef136a1c687d4aa0395c175f2c4586e379924c352fd02f7870cf7de783c23"
+dependencies = [
+ "dtor-proc-macro",
+]
+
+[[package]]
+name = "dtor-proc-macro"
+version = "0.0.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7454e41ff9012c00d53cf7f475c5e3afa3b91b7c90568495495e8d9bf47a1055"
diff --git a/Cargo.toml b/Cargo.toml
index 5d4c07c..7877a66 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -4,3 +4,5 @@ version = "0.1.0"
 edition = "2024"
 
 [dependencies]
+ctor = "0.4.1"
+ctor-lite = "0.1.0"
diff --git a/Readme.md b/Readme.md
index 96a09f5..8d3f341 100644
--- a/Readme.md
+++ b/Readme.md
@@ -2,4 +2,8 @@
 
 The goal of this crate is to find a way to annotate functions with an attribute macro like `#[get("/")]` and have it automatically added in a global registry.
 Actix for example still requires you to register all functions annotated in such a way with the service method, I don't need to do that in Spring Boot applications, I just use the necessary annotations.
-This crate might not actually end up presenting a solution, but rather document why it's not possible to do so, only time will tell.
+
+
+Turns out there is a way to do this with the ctor or ctor_lite crate. Seems simple enough and I need to find out which one I would prefer.
+I think ctor_lite as I will wrap this in my own attribute macro anyway for my library. In an application I would probably prefer ctor as I personally find attribute macros more readable.
+There seems to be no real differences between the two crates other than the macro type.
diff --git a/src/main.rs b/src/main.rs
index e7a11a9..f0622b7 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,3 +1,43 @@
-fn main() {
-    println!("Hello, world!");
+use ctor::{ctor, dtor};
+
+#[ctor]
+unsafe fn ctor() {
+    println!("Hello from ctor");
+}
+
+#[dtor]
+unsafe fn dtor() {
+    println!("Goodbye from ctor");
+}
+
+ctor_lite::ctor! {
+    unsafe fn ctor_lite() {
+        println!("Hello from ctor_lite");
+    }
+}
+
+ctor_lite::dtor! {
+    unsafe fn dtor_lite() {
+        println!("Goodbye from ctor_lite");
+    }
+}
+
+struct HelloPrinter;
+
+impl HelloPrinter {
+    pub fn print(self) {
+        println!("Hello from printer");
+    }
+}
+
+impl Drop for HelloPrinter {
+    fn drop(&mut self) {
+        println!("Goodbye from printer");
+    }
+}
+
+fn main() {
+    println!("Hello from main");
+    let printer = HelloPrinter;
+    printer.print();
 }