#ifndef __icon_cache_ah__
#define __icon_cache_ah__

#include "IconCache.h"

aspect Cache {

  // cache instance
  IconCache iconcache;

  // initialize icon cache
  Cache () : iconcache (5, 10) {}

  static Cache *instance() {
    static Cache cache;
    return &cache;
  } 

public:
  // add baseclass Chain to class Icon
  advice classes("Icon") : baseclass(Chain);

  // look for icon in cache before loading it again
  advice args(c) && target("IconLoader") && call("Icon * %::Load(...)") : 
  around(char c) { tjp->proceed (); }
  advice args(c) && target("IconLoader") && call("Icon * %::Load(...)") : 
  around(char c) {
    Icon *i = iconcache.Find(c);
    if (!i) {
      tjp->proceed();
      i = *tjp->result();
      iconcache.Insert((Chain*)i);
    } else {
      *tjp->result() = i;
    }
  }

  advice execution("% IconDrawer::foo(...)") : around () { tjp->proceed (); }
  advice execution("% IconDrawer::foo(...)") : around () { tjp->proceed (); }
  advice execution("% IconDrawer::foo(...)") : around () { tjp->that (); tjp->proceed (); }
  // override IconLoader::Free
  advice call("void IconLoader::Free(Icon *)") : around() {
  }

  static Cache *aspectof () {
    return Cache::instance();
  }
};

#endif // __icon_cache_ah__
