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//! Post-config hook system.
//!
//! Hooks registered via `inventory::submit!` run once at the end of
//! [`crate::config::Config::load`], before any command consumes the config,
//! in inventory registration order.
use anyhow::Result;
use crate::config::Config;
/// A post-config hook. Submit one with `inventory::submit!`.
///
/// `function` and `location` carry the registered function's fully-qualified
/// path and source location. They are populated by hand at each registration
/// site (no macro), via `concat!(module_path!(), "::", stringify!(fn))` and
/// `concat!(file!(), ":", line!())`. They are surfaced by
/// `rsconstruct hooks --verbose`.
pub struct PhaseHook {
pub name: &'static str,
pub description: &'static str,
pub function: &'static str,
pub location: &'static str,
pub run: fn(&mut Config) -> Result<()>,
}
inventory::collect!(PhaseHook);
pub fn all_hooks() -> impl Iterator<Item = &'static PhaseHook> {
inventory::iter::<PhaseHook>()
}
/// Run every registered post-config hook, in inventory order.
pub fn run_post_config_hooks(config: &mut Config) -> Result<()> {
for hook in all_hooks() {
(hook.run)(config).map_err(|e| e.context(format!("post-config hook '{}'", hook.name)))?;
}
Ok(())
}