Migrate exit code control to resource-based system

1 files changed, 42 insertions, 0 deletions

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!();