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author | Micael Karlberg <[email protected]> | 2011-03-17 12:19:57 +0100 |
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committer | Micael Karlberg <[email protected]> | 2011-03-17 12:19:57 +0100 |
commit | 6b1d1ab0a27e9ed08a626e18319beb91d0a0d5ce (patch) | |
tree | 82e54daec07390bb4cad8b279e0e8d1fd0170b78 /lib/dialyzer/test/opaque_tests_SUITE_data/src/int/int_adt.erl | |
parent | 4f42486c2f94860c1aa8152562760b6a2aa7c5cb (diff) | |
parent | f861b4fdb3fd39e35f2951c53a73b30a98c7f973 (diff) | |
download | otp-6b1d1ab0a27e9ed08a626e18319beb91d0a0d5ce.tar.gz otp-6b1d1ab0a27e9ed08a626e18319beb91d0a0d5ce.tar.bz2 otp-6b1d1ab0a27e9ed08a626e18319beb91d0a0d5ce.zip |
Merge branch 'dev' into bmk/inets/ftp/missing_spec_causes_dialyxer_problems/OTP-9114
Also fixed a bunch of "end-years" (was 2010 but should have been 2011,
which the commit hook not happy with).
Diffstat (limited to 'lib/dialyzer/test/opaque_tests_SUITE_data/src/int/int_adt.erl')
-rw-r--r-- | lib/dialyzer/test/opaque_tests_SUITE_data/src/int/int_adt.erl | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/lib/dialyzer/test/opaque_tests_SUITE_data/src/int/int_adt.erl b/lib/dialyzer/test/opaque_tests_SUITE_data/src/int/int_adt.erl new file mode 100644 index 0000000000..99f8cbdc4a --- /dev/null +++ b/lib/dialyzer/test/opaque_tests_SUITE_data/src/int/int_adt.erl @@ -0,0 +1,33 @@ +%%---------------------------------------------------------------------------- +%% Module that tests consistency of spec declarations in the presence of +%% opaque types. Contains both valid and invalid contracts with opaque types. +%%---------------------------------------------------------------------------- + +-module(int_adt). + +-export([new_i/0, add_i/2, div_i/2, add_f/2, div_f/2]). + +-export_type([int/0]). + +-opaque int() :: integer(). + +%% the user has declared the return to be an opaque type, but the success +%% typing inference is too strong and finds a subtype as a return: this is OK +-spec new_i() -> int(). +new_i() -> 42. + +%% the success typing is more general than the contract: this is OK +-spec add_i(int(), int()) -> int(). +add_i(X, Y) -> X + Y. + +%% the success typing coincides with the contract: this is OK, of course +-spec div_i(int(), int()) -> int(). +div_i(X, Y) -> X div Y. + +%% the success typing has an incompatible domain element: this is invalid +-spec add_f(int(), int()) -> int(). +add_f(X, Y) when is_float(Y) -> X + trunc(Y). + +%% the success typing has an incompatible range: this is invalid +-spec div_f(int(), int()) -> int(). +div_f(X, Y) -> X / Y. |