Merge: Callref compilers

[nit.git] / src / compiler / coloring.nit

diff --git a/src/compiler/coloring.nit b/src/compiler/coloring.nit
index 9b3748b..80f29ec 100644 (file)
--- a/src/compiler/coloring.nit
+++ b/src/compiler/coloring.nit
@@ -178,6 +178,9 @@ class POSetColorer[E: Object]
        var is_colored = false
 
        # Resulting ids
+       #
+       # All ids are strictly positive (`>= 1`).
+       #
        # REQUIRE: is_colored
        fun ids: Map[E, Int] do
                assert is_colored
@@ -223,7 +226,7 @@ class POSetColorer[E: Object]
                ids_cache.clear
                var elements = new HashSet[E].from(poset_cache.to_a)
                for e in poset_cache.linearize(elements) do
-                       ids_cache[e] = ids_cache.length
+                       ids_cache[e] = ids_cache.length + 1
                end
        end