aboutsummaryrefslogtreecommitdiffstats
path: root/lib/hipe/cerl/erl_types.erl
diff options
context:
space:
mode:
Diffstat (limited to 'lib/hipe/cerl/erl_types.erl')
-rw-r--r--lib/hipe/cerl/erl_types.erl28
1 files changed, 27 insertions, 1 deletions
diff --git a/lib/hipe/cerl/erl_types.erl b/lib/hipe/cerl/erl_types.erl
index 1ed85af172..c8dc162457 100644
--- a/lib/hipe/cerl/erl_types.erl
+++ b/lib/hipe/cerl/erl_types.erl
@@ -62,6 +62,7 @@
t_boolean/0,
t_byte/0,
t_char/0,
+ t_charlist/0,
t_collect_vars/1,
t_cons/0,
t_cons/2,
@@ -1455,6 +1456,21 @@ t_is_tuple(_) -> false.
%% Non-primitive types, including some handy syntactic sugar types
%%
+-spec t_charlist() -> erl_type().
+
+t_charlist() ->
+ t_charlist(1).
+
+-spec t_charlist(non_neg_integer()) -> erl_type().
+
+t_charlist(N) when N > 0 ->
+ t_maybe_improper_list(t_sup([t_unicode_char(),
+ t_unicode_binary(),
+ t_charlist(N-1)]),
+ t_sup(t_unicode_binary(), t_nil()));
+t_charlist(0) ->
+ t_maybe_improper_list(t_any(), t_sup(t_unicode_binary(), t_nil())).
+
-spec t_constant() -> erl_type().
t_constant() ->
@@ -1549,6 +1565,16 @@ t_parameterized_module() ->
t_timeout() ->
t_sup(t_non_neg_integer(), t_atom('infinity')).
+-spec t_unicode_binary() -> erl_type().
+
+t_unicode_binary() ->
+ t_binary(). % with characters encoded in UTF-8 coding standard
+
+-spec t_unicode_char() -> erl_type().
+
+t_unicode_char() ->
+ t_integer(). % representing a valid unicode codepoint
+
%%-----------------------------------------------------------------------------
%% Some built-in opaque types
%%
@@ -2825,7 +2851,7 @@ t_subtract(?list(Contents1, Termination1, Size1) = T,
true ->
case {Size1, Size2} of
{?nonempty_qual, ?unknown_qual} -> ?none;
- {?unknown_qual, ?nonempty_qual} -> Termination1;
+ {?unknown_qual, ?nonempty_qual} -> ?nil;
{S, S} -> ?none
end;
false ->