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-rw-r--r--lib/compiler/src/cerl.erl15
1 files changed, 15 insertions, 0 deletions
diff --git a/lib/compiler/src/cerl.erl b/lib/compiler/src/cerl.erl
index 1a2957ee31..5d6997da11 100644
--- a/lib/compiler/src/cerl.erl
+++ b/lib/compiler/src/cerl.erl
@@ -124,6 +124,7 @@
%% keep map exports here for now
c_map_pattern/1,
+ is_c_map/1,
map_es/1,
map_arg/1,
update_c_map/3,
@@ -1579,6 +1580,20 @@ ann_make_list(_, [], Node) ->
%% ---------------------------------------------------------------------
%% maps
+%% @spec is_c_map(Node::cerl()) -> boolean()
+%%
+%% @doc Returns <code>true</code> if <code>Node</code> is an abstract
+%% map constructor, otherwise <code>false</code>.
+
+-spec is_c_map(cerl()) -> boolean().
+
+is_c_map(#c_map{}) ->
+ true;
+is_c_map(#c_literal{val = V}) when is_map(V) ->
+ true;
+is_c_map(_) ->
+ false.
+
-spec map_es(c_map()) -> [c_map_pair()].
map_es(#c_map{es = Es}) ->