write-out interface for points

src/core.rs

@@ -89,13 +89,21 @@ pub trait Mentionable<'a, Ctx: 'a + Context>: 'a + Serializable {
     /// Used for walking over object trees to ensure two objects with different references don't collide.
     fn topology(&self) -> Hash {
         let mut vec = Vec::new();
-        for point in self.points() {
+        let mut points = Vec::new();
+        self.points(&mut points);
+        for point in points {
             vec.extend(point.point);
         }
         Ctx::hash(&vec)
     }
     /// References ([Point]s) to other objects.
-    fn points(&self) -> Vec<Point<'a, Ctx, TypelessMentionable<'a, Ctx>>>;
+    fn points(&self, points: &mut Vec<Point<'a, Ctx, TypelessMentionable<'a, Ctx>>>);
+
+    fn points_vec(&self) -> Vec<Point<'a, Ctx, TypelessMentionable<'a, Ctx>>> {
+        let mut points = Vec::new();
+        self.points(&mut points);
+        points
+    }
 }
 
 /// Short-hand for the type of values returned by [`Resolver::resolve`].
@@ -273,8 +281,8 @@ impl<'a, Ctx: 'a + Context> Mentionable<'a, Ctx> for TypelessMentionable<'a, Ctx
         self.t_topology
     }
 
-    fn points(&self) -> Vec<Point<'a, Ctx, TypelessMentionable<'a, Ctx>>> {
-        self.t_points.clone()
+    fn points(&self, points: &mut Vec<Point<'a, Ctx, TypelessMentionable<'a, Ctx>>>) {
+        points.extend(self.t_points.iter().map(Clone::clone));
     }
 }
 
@@ -324,7 +332,7 @@ impl<'a, Ctx: 'a + Context> TypelessMentionable<'a, Ctx> {
     pub fn from_typed<A: Mentionable<'a, Ctx>>(mentionable: Rc<A>) -> Self {
         let factory = TypelessFactory::from_typed(mentionable.factory());
         let topology = mentionable.topology();
-        let points = mentionable.points();
+        let points = mentionable.points_vec();
         TypelessMentionable {
             t_serialize: Box::new(move |serializer| mentionable.serialize(serializer)),
             t_factory: factory,

src/std.rs

@@ -127,8 +127,8 @@ impl<'a, Ctx: 'a + Context, A: Mentionable<'a, Ctx>> Mentionable<'a, Ctx> for Po
         Ctx::hash(&self.point)
     }
 
-    fn points(&self) -> Vec<Point<'a, Ctx, TypelessMentionable<'a, Ctx>>> {
-        vec![self.typeless()]
+    fn points(&self, points: &mut Vec<Point<'a, Ctx, TypelessMentionable<'a, Ctx>>>) {
+        points.push(self.typeless());
     }
 }
 

src/std/atomic/atomic_object.rs

@@ -43,9 +43,7 @@ impl<'a, Ctx: 'a + Context, A: Atomic> Mentionable<'a, Ctx> for AtomicObject<A>
         Ctx::hash(b"")
     }
 
-    fn points(&self) -> Vec<Point<'a, Ctx, TypelessMentionable<'a, Ctx>>> {
-        vec![]
-    }
+    fn points(&self, _points: &mut Vec<Point<'a, Ctx, TypelessMentionable<'a, Ctx>>>) {}
 }
 
 /// Generic implementation of a factory for [Atomic]s.
@@ -97,4 +95,3 @@ impl<A: Atomic> ExtAtomicObject for A {
         self.into()
     }
 }
-

src/std/cast.rs

@@ -84,7 +84,7 @@ where
             |resolved| match resolved {
                 Ok(mentionable) => {
                     let resolver: Rc<dyn Resolver<'a, Ctx>> = Rc::new(CastResolver {
-                        points: mentionable.points(),
+                        points: mentionable.points_vec(),
                     });
                     Ok((mentionable.bytes(), resolver))
                 }
@@ -111,7 +111,7 @@ where
         factory.parse_slice(
             &self.bytes(),
             Rc::new(CastResolver {
-                points: self.points(),
+                points: self.points_vec(),
             }),
         )
     }

src/std/collections/stack.rs

@@ -44,10 +44,9 @@ impl<'a, Ctx: 'a + Context, A: Mentionable<'a, Ctx>> Mentionable<'a, Ctx>
         StackNodeFactory::new(self.element.factory())
     }
 
-    fn points(&self) -> Vec<Point<'a, Ctx, TypelessMentionable<'a, Ctx>>> {
-        let mut points = self.rest.points();
-        points.extend(self.element.points());
-        points
+    fn points(&self, points: &mut Vec<Point<'a, Ctx, TypelessMentionable<'a, Ctx>>>) {
+        self.rest.points(points);
+        self.element.points(points);
     }
 }
 

src/std/inlining.rs

@@ -1,7 +1,7 @@
 pub mod static_pair;
 
-use super::atomic::*;
 use super::atomic::atomic_object::*;
+use super::atomic::*;
 use crate::core::*;
 use crate::std::*;
 

src/std/inlining/static_pair.rs

@@ -79,11 +79,10 @@ impl<'a, Ctx: 'a + Context, SP: StaticPair<'a, Ctx>> Mentionable<'a, Ctx> for St
         }
     }
 
-    fn points(&self) -> Vec<Point<'a, Ctx, TypelessMentionable<'a, Ctx>>> {
+    fn points(&self, points: &mut Vec<Point<'a, Ctx, TypelessMentionable<'a, Ctx>>>) {
         let (a, b) = self.pair.elements();
-        let mut vec = a.points();
-        vec.extend(b.points());
-        vec
+        a.points(points);
+        b.points(points);
     }
 }
 

src/std/nullable.rs

@@ -40,11 +40,11 @@ impl<'a, Ctx: 'a + Context, A: Mentionable<'a, Ctx>> Mentionable<'a, Ctx> for Nu
         }
     }
 
-    fn points(&self) -> Vec<Point<'a, Ctx, TypelessMentionable<'a, Ctx>>> {
+    fn points(&self, points: &mut Vec<Point<'a, Ctx, TypelessMentionable<'a, Ctx>>>) {
         match self {
-            Nullable::Null(_) => vec![],
-            Nullable::NotNull(point) => vec![point.typeless()],
-        }
+            Nullable::Null(_) => {}
+            Nullable::NotNull(point) => points.push(point.typeless()),
+        };
     }
 }