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use crate::encoder::EncodeContext;
use crate::schema::{Lazy, LazySeq};
use rustc::ty::TyCtxt;
use rustc_serialize::Encodable;
/// The IsolatedEncoder provides facilities to write to crate metadata while
/// making sure that anything going through it is also feed into an ICH hasher.
pub struct IsolatedEncoder<'a, 'b: 'a, 'tcx: 'b> {
pub tcx: TyCtxt<'b, 'tcx, 'tcx>,
ecx: &'a mut EncodeContext<'b, 'tcx>,
}
impl<'a, 'b: 'a, 'tcx: 'b> IsolatedEncoder<'a, 'b, 'tcx> {
pub fn new(ecx: &'a mut EncodeContext<'b, 'tcx>) -> Self {
let tcx = ecx.tcx;
IsolatedEncoder {
tcx,
ecx,
}
}
pub fn lazy<T>(&mut self, value: &T) -> Lazy<T>
where T: Encodable
{
self.ecx.lazy(value)
}
pub fn lazy_seq<I, T>(&mut self, iter: I) -> LazySeq<T>
where I: IntoIterator<Item = T>,
T: Encodable
{
self.ecx.lazy_seq(iter)
}
pub fn lazy_seq_ref<'x, I, T>(&mut self, iter: I) -> LazySeq<T>
where I: IntoIterator<Item = &'x T>,
T: 'x + Encodable
{
self.ecx.lazy_seq_ref(iter)
}
pub fn lazy_seq_from_slice<T>(&mut self, slice: &[T]) -> LazySeq<T>
where T: Encodable
{
self.ecx.lazy_seq_ref(slice.iter())
}
}
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