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use rustc::util::nodemap::DefIdSet;
use std::mem;
use clean::{self, AttributesExt, NestedAttributesExt};
use clean::Item;
use plugins;
use fold;
use fold::DocFolder;
use fold::FoldItem::Strip;
use passes::ImplStripper;
pub fn strip_hidden(krate: clean::Crate) -> plugins::PluginResult {
let mut retained = DefIdSet();
let krate = {
let mut stripper = Stripper{ retained: &mut retained, update_retained: true };
stripper.fold_crate(krate)
};
let mut stripper = ImplStripper { retained: &retained };
stripper.fold_crate(krate)
}
struct Stripper<'a> {
retained: &'a mut DefIdSet,
update_retained: bool,
}
impl<'a> fold::DocFolder for Stripper<'a> {
fn fold_item(&mut self, i: Item) -> Option<Item> {
if i.attrs.lists("doc").has_word("hidden") {
debug!("found one in strip_hidden; removing");
match i.inner {
clean::StructFieldItem(..) | clean::ModuleItem(..) => {
let old = mem::replace(&mut self.update_retained, false);
let ret = Strip(self.fold_item_recur(i).unwrap()).fold();
self.update_retained = old;
return ret;
}
_ => return None,
}
} else {
if self.update_retained {
self.retained.insert(i.def_id);
}
}
self.fold_item_recur(i)
}
}