refactor: migrate to hook macro

[ahabhgk]

Summary

#[plugin]
#[derive(Debug, Default)]
pub struct Plugin {
  options: PluginOptions,
}

#[plugin_hook(AsyncSeries<Compilation> for Plugin, stage = 100)]
async process_assets(&self, compilation: &mut Compilation) -> Result<()> {
  // ...
}

expands to this (simplified):

#[derive(Debug, Default)]
pub struct Plugin {
  inner: Arc<PluginInner>,
}

#[derive(Debug, Default)]
struct PluginInner {
  options: PluginOptions,
}

impl Deref for Plugin {
  type Target = PluginInner
  // ...
}

struct process_assets {
  inner: Arc<PluginInner>,
}

impl process_assets {
  pub fn new(plugin: &Plugin) -> Self {
    Self { inner: Arc::clone(&plugin.inner) }
  }
}

impl Deref for process_assets {
  type Target = PluginInner
  // ...
}

#[async_trait]
impl AsyncSeries<Compilation> for process_assets {
  async run(&self, compilation: &mut Compilation) -> Result<()> {
    // ...
  }
  fn stage(&self) -> i32 {
    100
  }
}

The Inner is too common in the new hook design so made a macro to hide it, and this will make the migration more smooth

Require Documentation?

• No
• Yes, the corresponding rspack-website PR is __