FixedSizeFactory for pair

src/rstd/collections/pair.rs

@@ -7,6 +7,7 @@ use crate::atomic::*;
 use crate::mode::*;
 use crate::rcore::*;
 use crate::rstd::inlining::static_pair::*;
+use crate::rstd::inlining::*;
 
 pub type PairObject<A, B> = StaticPairObject<(A, B)>;
 pub type PairFactory<'a, Ctx, A, B> = StaticPairFactory<'a, Ctx, (A, B)>;
@@ -173,6 +174,16 @@ impl<'a, Ctx: Context<'a>, A: Mentionable<'a, Ctx>, B: Mentionable<'a, Ctx>> Men
     }
 }
 
+impl<'a, Ctx: Context<'a>, FA, FB> FixedSizeFactory<'a, Ctx> for (FA, FB)
+where
+    FA: FixedSizeFactory<'a, Ctx>,
+    FB: FixedSizeFactory<'a, Ctx> + FactoryModeParse<'a, Ctx>,
+{
+    fn size(&self) -> usize {
+        self.0.size() + self.1.size()
+    }
+}
+
 impl<A: InliningAtomic, B: AtomicModeParse> AtomicModeParse for (A, B) {
     fn ma_deserialize<I: Stream>(stream: I) -> AModeResultM<Self, I> {
         StaticPairObject::<Self>::ma_deserialize_sp(stream)