cpp/012transform


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//: Once a set of recipes is loaded, it can be filtered through an extensible
//: list of 'transforms'.
//:
//: The hope is that this framework of transform tools will provide a
//: deconstructed alternative to conventional compilers.

:(before "End Recipe Fields")
size_t transformed_until;
  recipe() :transformed_until(-1) {}

:(before "End Types")
typedef void (*transform_fn)(recipe_number);

:(before "End Globals")
vector<transform_fn> Transform;

:(code)
void transform_all() {
  for (size_t t = 0; t < Transform.size(); ++t) {
    for (unordered_map<recipe_number, recipe>::iterator p = Recipe.begin(); p != Recipe.end(); ++p) {
      recipe& r = p->second;
      if (r.steps.empty()) continue;
      if (r.transformed_until != t-1) continue;
      (*Transform[t])(/*recipe_number*/p->first);
      r.transformed_until = t;
    }
  }
}