Migrate exit code control to resource-based system

3 files changed, 154 insertions, 0 deletions

diff --git a/examples/example-exit-code/Cargo.lock b/examples/example-exit-code/Cargo.lock
new file mode 100644
index 0000000..efe8f6e
--- /dev/null
+++ b/examples/example-exit-code/Cargo.lock
@@ -0,0 +1,105 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
+[[package]]
+name = "example-exit-code"
+version = "0.1.0"
+dependencies = [
+ "mingling",
+]
+
+[[package]]
+name = "just_fmt"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5454cda0d57db59778608d7a47bff5b16c6705598265869fb052b657f66cf05e"
+
+[[package]]
+name = "mingling"
+version = "0.1.8"
+dependencies = [
+ "mingling_core",
+ "mingling_macros",
+]
+
+[[package]]
+name = "mingling_core"
+version = "0.1.8"
+dependencies = [
+ "just_fmt",
+ "once_cell",
+ "thiserror",
+]
+
+[[package]]
+name = "mingling_macros"
+version = "0.1.8"
+dependencies = [
+ "just_fmt",
+ "once_cell",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "once_cell"
+version = "1.21.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9f7c3e4beb33f85d45ae3e3a1792185706c8e16d043238c593331cc7cd313b50"
+
+[[package]]
+name = "proc-macro2"
+version = "1.0.106"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8fd00f0bb2e90d81d1044c2b32617f68fcb9fa3bb7640c23e9c748e53fb30934"
+dependencies = [
+ "unicode-ident",
+]
+
+[[package]]
+name = "quote"
+version = "1.0.45"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "41f2619966050689382d2b44f664f4bc593e129785a36d6ee376ddf37259b924"
+dependencies = [
+ "proc-macro2",
+]
+
+[[package]]
+name = "syn"
+version = "2.0.117"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e665b8803e7b1d2a727f4023456bbbbe74da67099c585258af0ad9c5013b9b99"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
+
+[[package]]
+name = "thiserror"
+version = "2.0.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4288b5bcbc7920c07a1149a35cf9590a2aa808e0bc1eafaade0b80947865fbc4"
+dependencies = [
+ "thiserror-impl",
+]
+
+[[package]]
+name = "thiserror-impl"
+version = "2.0.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ebc4ee7f67670e9b64d05fa4253e753e016c6c95ff35b89b7941d6b856dec1d5"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "unicode-ident"
+version = "1.0.24"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e6e4313cd5fcd3dad5cafa179702e2b244f760991f45397d14d4ebf38247da75"
diff --git a/examples/example-exit-code/Cargo.toml b/examples/example-exit-code/Cargo.toml
new file mode 100644
index 0000000..a6c9c7c
--- /dev/null
+++ b/examples/example-exit-code/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "example-exit-code"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+mingling = { path = "../../mingling" }
diff --git a/examples/example-exit-code/src/main.rs b/examples/example-exit-code/src/main.rs
new file mode 100644
index 0000000..f138fb3
--- /dev/null
+++ b/examples/example-exit-code/src/main.rs
@@ -0,0 +1,42 @@
+//! `Mingling` Example - Exit Code
+//!
+//! This example demonstrates how to modify the program's exit code using `ExitCodeSetup`.
+//! By default, the program exits with code 0. This example shows:
+//! 1. Using `dispatcher!` to define an error command,
+//! 2. Using `chain!` to handle errors and set a custom exit code via `ProgramExitCode`,
+//! 3. Using `renderer!` to print an error message.
+//!
+//! # How to Run
+//! ```bash
+//! cargo run --manifest-path ./examples/example-exit-code/Cargo.toml -- error
+//! ```
+
+use mingling::{
+    macros::{chain, dispatcher, gen_program, pack, r_println, renderer},
+    res::ExitCode,
+    setup::ExitCodeSetup,
+    this,
+};
+
+fn main() {
+    let mut program = ThisProgram::new();
+    program.with_dispatcher(ErrorCommand);
+    program.with_setup(ExitCodeSetup::<ThisProgram>::default());
+    program.exec();
+}
+
+dispatcher!("error", ErrorCommand => ErrorEntry);
+pack!(ResultError = ());
+
+#[chain]
+fn handle_error_entry(_prev: ErrorEntry) -> NextProcess {
+    this::<ThisProgram>().modify_res(|r: &mut ExitCode| r.exit_code = 1);
+    return ResultError::default();
+}
+
+#[renderer]
+fn render_error(_prev: ResultError) {
+    r_println!("Error!");
+}
+
+gen_program!();