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make record take a closure

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This commit is contained in:
Niko Matsakis 2016-08-10 21:37:53 -04:00
parent 6b76932ba8
commit baccdc01ae
2 changed files with 529 additions and 554 deletions
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1071
src/librustc_metadata/encoder.rs
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12
src/librustc_metadata/index_builder.rs
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@ -8,10 +8,11 @@
// option. This file may not be copied, modified, or distributed
// except according to those terms.
use common::tag_items_data_item;
use encoder::EncodeContext;
use index::IndexData;
use rbml::writer::Encoder;
use rustc::dep_graph::{DepNode, DepTask};
use rustc::dep_graph::DepNode;
use rustc::hir::def_id::DefId;
use rustc::ty;
use rustc_data_structures::fnv::FnvHashMap;
@ -52,10 +53,15 @@ impl<'a, 'tcx> IndexBuilder<'a, 'tcx> {
///
/// Returns a dep-graph task that you should keep live as long as
/// the data for this item is being emitted.
pub fn record(&mut self, id: DefId, rbml_w: &mut Encoder) -> DepTask<'a> {
pub fn record<OP>(&mut self, id: DefId, rbml_w: &mut Encoder, op: OP)
where OP: FnOnce(&mut ItemContentBuilder<'a, 'tcx>, &mut Encoder)
{
let position = rbml_w.mark_stable_position();
self.items.record(id, position);
self.ecx.tcx.dep_graph.in_task(DepNode::MetaData(id))
let _task = self.ecx.tcx.dep_graph.in_task(DepNode::MetaData(id));
rbml_w.start_tag(tag_items_data_item).unwrap();
op(self, rbml_w);
rbml_w.end_tag().unwrap();
}
pub fn into_fields(self) -> (IndexData, FnvHashMap<XRef<'tcx>, u32>) {