Changes the slot map so only runes can be used as slots

1 files changed, 4 insertions, 6 deletions

diff --git a/subex/main.go b/subex/main.go
index fd59047..fd0d356 100644
--- a/subex/main.go
+++ b/subex/main.go
@@ -23,18 +23,16 @@ func (replacement TransducerReplacementAtom) build(store Store) []walk.Atom {
 	return []walk.Atom{replacement.atom}
 }
 
-// TODO should be a single field called slot with a type of rune
 // A TransducerOutput which is a slot that is loaded from
 type TransducerReplacementLoad struct {
-	atom walk.Atom
+	slot rune
 }
 func (replacement TransducerReplacementLoad) build(store Store) []walk.Atom {
-	return store[replacement.atom]
+	return store[replacement.slot]
 }
 
 // Where slots are stored
-// TODO should map from runes as only runes can be slots
-type Store map[walk.Atom][]walk.Atom
+type Store map[rune][]walk.Atom
 // Return a new store with all the data from this one
 func (store Store) clone() Store {
 	newStore := make(Store)
@@ -44,7 +42,7 @@ func (store Store) clone() Store {
 	return newStore
 }
 // Return a copy of this store but with an additional slot set
-func (store Store) withValue(key walk.Atom, value []walk.Atom) Store {
+func (store Store) withValue(key rune, value []walk.Atom) Store {
 	newStore := store.clone()
 	newStore[key] = value
 	return newStore