diff options
Diffstat (limited to 'lib/hipe/test/bs_SUITE_data/bs_pmatch_in_guards.erl')
| -rw-r--r-- | lib/hipe/test/bs_SUITE_data/bs_pmatch_in_guards.erl | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/lib/hipe/test/bs_SUITE_data/bs_pmatch_in_guards.erl b/lib/hipe/test/bs_SUITE_data/bs_pmatch_in_guards.erl new file mode 100644 index 0000000000..159227bb92 --- /dev/null +++ b/lib/hipe/test/bs_SUITE_data/bs_pmatch_in_guards.erl @@ -0,0 +1,23 @@ +%% -*- erlang-indent-level: 2 -*- +%%-------------------------------------------------------------------- +%% Tests that basic cases of binary pattern matching in guards work +%%-------------------------------------------------------------------- +-module(bs_pmatch_in_guards). + +-export([test/0]). + +test() -> + 1 = in_guard(<<16#74ad:16>>, 16#e95, 5), + 2 = in_guard(<<16#3A,16#F7,"hello">>, 16#3AF7, <<"hello">>), + 3 = in_guard(<<16#FBCD:14,3.1415/float,3:2>>, 16#FBCD, 3.1415), + nope = in_guard(<<1>>, 42, b), + nope = in_guard(<<1>>, a, b), + nope = in_guard(<<1,2>>, 1, 1), + nope = in_guard(<<4,5>>, 1, 2.71), + nope = in_guard(<<4,5>>, 1, <<12,13>>), + ok. + +in_guard(Bin, A, B) when <<A:13,B:3>> == Bin -> 1; +in_guard(Bin, A, B) when <<A:16,B/binary>> == Bin -> 2; +in_guard(Bin, A, B) when <<A:14,B/float,3:2>> == Bin -> 3; +in_guard(_, _, _) -> nope. |