%% %% %CopyrightBegin% %% %% Copyright Ericsson AB 2001-2010. All Rights Reserved. %% %% The contents of this file are subject to the Erlang Public License, %% Version 1.1, (the "License"); you may not use this file except in %% compliance with the License. You should have received a copy of the %% Erlang Public License along with this software. If not, it can be %% retrieved online at http://www.erlang.org/. %% %% Software distributed under the License is distributed on an "AS IS" %% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See %% the License for the specific language governing rights and limitations %% under the License. %% %% %CopyrightEnd% %% -module(guard_SUITE). -include("test_server.hrl"). -export([all/1, misc/1,const_cond/1,basic_not/1,complex_not/1,nested_nots/1, semicolon/1,complex_semicolon/1,comma/1, or_guard/1,more_or_guards/1, complex_or_guards/1,and_guard/1, xor_guard/1,more_xor_guards/1, old_guard_tests/1, build_in_guard/1,gbif/1, t_is_boolean/1,is_function_2/1, tricky/1,rel_ops/1,literal_type_tests/1, basic_andalso_orelse/1,traverse_dcd/1, check_qlc_hrl/1,andalso_semi/1,tuple_size/1]). all(suite) -> test_lib:recompile(?MODULE), [misc,const_cond,basic_not,complex_not,nested_nots, semicolon,complex_semicolon, comma,or_guard,more_or_guards, complex_or_guards,and_guard, xor_guard,more_xor_guards, build_in_guard,old_guard_tests,gbif, t_is_boolean,is_function_2,tricky,rel_ops,literal_type_tests, basic_andalso_orelse,traverse_dcd,check_qlc_hrl,andalso_semi, tuple_size]. misc(Config) when is_list(Config) -> ?line 42 = case id(42) of X when -X -> ok; X -> X end, ?line {a,b,c} = misc_1([{{a,b,c}},{[4]},{[3]},{-2}]), ?line none = misc_1([{{a,b,c}},{[4]},{[3]},{-3}]), ?line none = misc_1([{{a,b,c}},{[4]},{[7]},{-2}]), ?line none = misc_1([{{a,b,c}},{[4]},{[3]},{[1,2,3]}]), ?line {ok,buf,<<>>} = get_data({o,true,raw}, 0, buf), ?line {ok,buf,<<>>} = get_data({o,true,raw}, 42, buf), ?line {ok,buf,<<>>} = get_data({o,false,raw}, 0, buf), ?line error = get_data({o,false,raw}, 42, buf), ?line {ok,buf,<<>>} = get_data({o,true,0}, 0, buf), ?line {ok,buf,<<>>} = get_data({o,true,0}, 42, buf), ?line {ok,buf,<<>>} = get_data({o,false,0}, 0, buf), ?line error = get_data({o,false,0}, 42, buf), ok. misc_1([{W},{X},{Y},{Z}]) -> if X > Y andalso abs(Z) =:= 2 -> id(W); true -> none end. get_data({o,Active,Raw}, BytesToRead, Buffer) when Raw =:= raw; Raw =:= 0 -> if Active =/= false orelse BytesToRead =:= 0 -> {ok,Buffer,<<>>}; true -> error end. const_cond(Config) when is_list(Config) -> ?line ok = const_cond({}, 0), ?line ok = const_cond({a}, 1), ?line error = const_cond({a,b}, 3), ?line error = const_cond({a}, 0), ?line error = const_cond({a,b}, 1), ok. const_cond(T, Sz) -> case T of _X when false -> never; _X when tuple(T), eq == eq, tuple_size(T) == Sz -> ok; _X when tuple(T), eq == leq, tuple_size(T) =< Sz -> ok; _X -> error end. basic_not(Config) when is_list(Config) -> True = id(true), False = id(false), Glurf = id(glurf), A = id(5), B = id(37.5), C = id(-1), D = id(5), ATuple = {False,True,Glurf}, ?line check(fun() -> if not false -> ok; true -> error end end, ok), ?line check(fun() -> if not true -> ok; true -> error end end, error), ?line check(fun() -> if not False -> ok; true -> error end end, ok), ?line check(fun() -> if not True -> ok; true -> error end end, error), ?line check(fun() -> if A > B -> gt; A < B -> lt; A == B -> eq end end, lt), ?line check(fun() -> if A > C -> gt; A < C -> lt; A == C -> eq end end, gt), ?line check(fun() -> if A > D -> gt; A < D -> lt; A == D -> eq end end, eq), ?line check(fun() -> if not (7 > 453) -> le; not (7 < 453) -> ge; not (7 == 453) -> ne; true -> eq end end, le), ?line check(fun() -> if not (7 > -8) -> le; not (7 < -8) -> ge; not (7 == -8) -> ne; true -> eq end end, ge), ?line check(fun() -> if not (7 > 7) -> le; not (7 < 7) -> ge; not (7 == 7) -> ne; true -> eq end end, le), ?line check(fun() -> if not (A > B) -> le; not (A < B) -> ge; not (A == B) -> ne; true -> eq end end, le), ?line check(fun() -> if not (A > C) -> le; not (A < C) -> ge; not (A == C) -> ne; true -> eq end end, ge), ?line check(fun() -> if not (A > D) -> le; not (A < D) -> ge; not (A == D) -> ne; true -> eq end end, le), ?line check(fun() -> if not element(1, ATuple) -> ok; true -> error end end, ok), ?line check(fun() -> if not element(2, ATuple) -> ok; true -> error end end, error), ?line check(fun() -> if not element(3, ATuple) -> ok; true -> error end end, error), ?line check(fun() -> if not glurf -> ok; true -> error end end, error), ?line check(fun() -> if not Glurf -> ok; true -> error end end, error), ok. complex_not(Config) when is_list(Config) -> ATuple = id({false,true,gurka}), ?line check(fun() -> if not(element(1, ATuple)) -> ok; true -> error end end, ok), ?line check(fun() -> if not(element(2, ATuple)) -> ok; true -> error end end, error), ?line check(fun() -> if not(element(3, ATuple) == gurka) -> ok; true -> error end end, error), ?line check(fun() -> if not(element(3, ATuple) =/= gurka) -> ok; true -> error end end, ok), ?line check(fun() -> if {a,not(element(2, ATuple))} == {a,false} -> ok; true -> error end end, ok), ?line check(fun() -> if {a,not(element(1, ATuple))} == {a,false} -> ok; true -> error end end, error), ?line check(fun() -> if not(element(1, ATuple) or element(3, ATuple)) -> ok; true -> error end end, error), %% orelse ?line check(fun() -> if not(element(1, ATuple) orelse element(3, ATuple)) -> ok; true -> error end end, error), ok. nested_nots(Config) when is_list(Config) -> ?line true = nested_not_1(0, 0), ?line true = nested_not_1(0, 1), ?line true = nested_not_1(a, b), ?line true = nested_not_1(10, 0), ?line false = nested_not_1(z, a), ?line false = nested_not_1(3.4, {anything,goes}), ?line false = nested_not_1(3.4, atom), ?line true = nested_not_1(3.0, [list]), ?line true = nested_not_2(false, false, 42), ?line true = nested_not_2(false, true, 42), ?line true = nested_not_2(true, false, 42), ?line true = nested_not_2(true, true, 42), ?line true = nested_not_2(false, false, atom), ?line false = nested_not_2(false, true, atom), ?line false = nested_not_2(true, false, atom), ?line false = nested_not_2(true, true, atom), ok. nested_not_1(X, Y) when not (((X>Y) or not(is_atom(X))) and (is_atom(Y) or (X==3.4))) -> true; nested_not_1(_, _) -> false. nested_not_2(X, Y, Z) -> nested_not_2(X, Y, Z, true). nested_not_2(X, Y, Z, True) when not(True and not((not(X) and not(Y)) or not(is_atom(Z)))) -> true; nested_not_2(_, _, _, _) -> false. semicolon(Config) when is_list(Config) -> %% True/false combined using ';' (literal atoms). ?line check(fun() -> if true; false -> ok end end, ok), ?line check(fun() -> if false; true -> ok end end, ok), ?line check(fun() -> if true; true -> ok end end, ok), ?line check(fun() -> if false; false -> ok; true -> error end end, error), ?line check(fun() -> {'EXIT',{if_clause,_}} = (catch if false; false -> ok end), exit end, exit), %% True/false combined used ';'. True = id(true), False = id(false), ?line check(fun() -> if True; False -> ok end end, ok), ?line check(fun() -> if False; True -> ok end end, ok), ?line check(fun() -> if True; True -> ok end end, ok), ?line check(fun() -> if False; False -> ok; true -> error end end, error), ?line check(fun() -> {'EXIT',{if_clause,_}} = (catch if False; False -> ok end), exit end, exit), %% Combine true/false with a non-boolean value. Glurf = id(glurf), ?line check(fun() -> if True; Glurf -> ok end end, ok), ?line check(fun() -> if Glurf; True -> ok end end, ok), ?line check(fun() -> if Glurf; Glurf -> ok; true -> error end end, error), ?line check(fun() -> if False; Glurf -> ok; true -> error end end, error), ?line check(fun() -> if Glurf; False -> ok; true -> error end end, error), ?line check(fun() -> {'EXIT',{if_clause,_}} = (catch if Glurf; Glurf -> ok end), exit end, exit), %% Combine true/false with errors. ATuple = id({false,true,gurka}), ?line check(fun() -> if True; element(42, ATuple) -> ok end end, ok), ?line check(fun() -> if element(42, ATuple); True -> ok end end, ok), ?line check(fun() -> if element(42, ATuple); element(42, ATuple) -> ok; true -> error end end, error), ?line check(fun() -> if False; element(42, ATuple) -> ok; true -> error end end, error), ?line check(fun() -> if element(42, ATuple); False -> ok; true -> error end end, error), ?line check(fun() -> {'EXIT',{if_clause,_}} = (catch if element(42, ATuple); element(42, ATuple) -> ok end), exit end, exit), ok. complex_semicolon(Config) when is_list(Config) -> ?line ok = csemi1(int, {blurf}), ?line ok = csemi1(string, {blurf}), ?line ok = csemi1(float, [a]), ?line error = csemi1(35, 42), %% 2 ?line ok = csemi2({}, {a,b,c}), ?line ok = csemi2({1,3.5}, {a,b,c}), ?line ok = csemi2(dum, {a,b,c}), ?line ok = csemi2({45,-19.3}, {}), ?line ok = csemi2({45,-19.3}, {dum}), ?line ok = csemi2({45,-19.3}, {dum,dum}), ?line error = csemi2({45}, {dum}), ?line error = csemi2([], {dum}), ?line error = csemi2({dum}, []), ?line error = csemi2([], []), %% 3 ?line csemi3(fun csemi3a/4), ?line csemi3(fun csemi3b/4), ?line csemi3(fun csemi3c/4), %% 4 ?line csemi4(fun csemi4a/4), ?line csemi4(fun csemi4b/4), ?line csemi4(fun csemi4c/4), ?line csemi4(fun csemi4d/4), %% 4, 'orelse' instead of 'or' ?line csemi4_orelse(fun csemi4_orelse_a/4), ?line csemi4_orelse(fun csemi4_orelse_b/4), ?line csemi4_orelse(fun csemi4_orelse_c/4), ?line csemi4_orelse(fun csemi4_orelse_d/4), %% 5 ?line error = csemi5(0, 0), ?line ok = csemi5(5, 0), ?line ok = csemi5(4, -4), ?line ok = csemi5(10, -4), %% 6 ?line error = csemi6({a}, 0), ?line ok = csemi6({a,b}, 0), ?line ok = csemi6({}, 3), ?line ok = csemi6({a,b,c}, 3), ok. csemi1(Type, Val) when is_list(Val), Type == float; Type == int; Type == string -> ok; csemi1(_, _) -> error. csemi2(A, B) when tuple_size(A) > 1; tuple_size(B) > 2 -> ok; csemi2(_, _) -> error. csemi3(Csemi3) -> ok = Csemi3({}, {a,b,c}, [0], [0]), ok = Csemi3({1,3.5}, {a,b,c}, -1, -1), ok = Csemi3(dum, {a,b,c}, 0.0, 0.0), ok = Csemi3(dum, {c}, b, a), ok = Csemi3(dum, <<1,2,3>>, 0.0, 0.0), ok = Csemi3(<<3.5/float>>, {a,b,c}, -1, -1), ok = Csemi3({45,-19.3}, {}, [], []), ok = Csemi3({45,-19.3}, {dum}, 42, 42), ok = Csemi3({45,-19.3}, {dum,dum}, 33, 33), ok = Csemi3({45}, {dum}, 1.0, 0), ok = Csemi3([a], {dum}, 1.0, 0), ok = Csemi3({dum}, [], 1.0, 0), ok = Csemi3([], [], 1.0, 0), ok = Csemi3(blurf, {dum}, 1.0, 0), ok = Csemi3({a}, blurf, 1.0, 0), ok = Csemi3([a], [dum], 1.0, 0), ok = Csemi3({dum}, [], 1.0, 0), ok = Csemi3([], [], 1.0, 0), error = Csemi3({45}, {dum}, 0, 0), error = Csemi3([a], {dum}, 0, 0), error = Csemi3({dum}, [], 0, 0), error = Csemi3([], [], 0, 0), ok. csemi3a(A, B, X, Y) when X > Y; size(A) > 1; size(B) > 2 -> ok; csemi3a(_, _, _, _) -> error. csemi3b(A, B, X, Y) when size(A) > 1; X > Y; size(B) > 2 -> ok; csemi3b(_, _, _, _) -> error. csemi3c(A, B, X, Y) when size(A) > 1; size(B) > 2; X > Y -> ok; csemi3c(_, _, _, _) -> error. csemi4(Test) -> ok = Test({a,b}, 2, {c,d}, 2), ok = Test({1,2,3}, 0, [], 0), ok = Test({}, 2, blurf, 0), ok = Test({}, 2, {1}, 2), error = Test([], 4, {}, 0), error = Test({}, 0, [a,b], 4), error = Test({}, 0, [a,b], 0), error = Test([], 0, {}, 0), error = Test({}, 0, {}, 0), ok. csemi4a(A, X, B, Y) when (tuple_size(A) > 1) or (X > 1); (tuple_size(B) > 1) or (Y > 1) -> ok; csemi4a(_, _, _, _) -> error. csemi4b(A, X, B, Y) when (X > 1) or (tuple_size(A) > 1); (tuple_size(B) > 1) or (Y > 1) -> ok; csemi4b(_, _, _, _) -> error. csemi4c(A, X, B, Y) when (tuple_size(A) > 1) or (X > 1); (Y > 1) or (tuple_size(B) > 1) -> ok; csemi4c(_, _, _, _) -> error. csemi4d(A, X, B, Y) when (X > 1) or (tuple_size(A) > 1); (Y > 1) or (tuple_size(B) > 1) -> ok; csemi4d(_, _, _, _) -> error. csemi4_orelse(Test) -> ok = Test({a,b}, 2, {c,d}, 2), ok = Test({1,2,3}, 0, [], 0), ok = Test({}, 2, blurf, 0), ok = Test({}, 2, {1}, 2), ?line error = Test([], 1, {}, 0), ok. csemi4_orelse_a(A, X, B, Y) when (tuple_size(A) > 1) orelse (X > 1); (tuple_size(B) > 1) orelse (Y > 1) -> ok; csemi4_orelse_a(_, _, _, _) -> error. csemi4_orelse_b(A, X, B, Y) when (X > 1) orelse (tuple_size(A) > 1); (tuple_size(B) > 1) orelse (Y > 1) -> ok; csemi4_orelse_b(_, _, _, _) -> error. csemi4_orelse_c(A, X, B, Y) when (tuple_size(A) > 1) orelse (X > 1); (Y > 1) orelse (tuple_size(B) > 1) -> ok; csemi4_orelse_c(_, _, _, _) -> error. csemi4_orelse_d(A, X, B, Y) when (X > 1) or (tuple_size(A) > 1); (Y > 1) or (tuple_size(B) > 1) -> ok; csemi4_orelse_d(_, _, _, _) -> error. csemi5(A, B) when hd([A+B]) > 1; abs(B) > 2 -> ok; csemi5(_, _) -> error. csemi6(A, B) when hd([tuple_size(A)]) > 1; abs(B) > 2 -> ok; csemi6(_, _) -> error. comma(Config) when is_list(Config) -> %% ',' combinations of literal true/false. ?line check(fun() -> if true, false -> ok; true -> error end end, error), ?line check(fun() -> if false, true -> ok; true -> error end end, error), ?line check(fun() -> if true, true -> ok end end, ok), ?line check(fun() -> if false, false -> ok; true -> error end end, error), ?line check(fun() -> {'EXIT',{if_clause,_}} = (catch if true, false -> ok; false, true -> ok; false, false -> ok end), exit end, exit), %% ',' combinations of true/false in variables. True = id(true), False = id(false), ?line check(fun() -> if True, False -> ok; true -> error end end, error), ?line check(fun() -> if False, True -> ok; true -> error end end, error), ?line check(fun() -> if True, True -> ok end end, ok), ?line check(fun() -> if False, False -> ok; true -> error end end, error), ?line check(fun() -> {'EXIT',{if_clause,_}} = (catch if True, False -> ok; False, True -> ok; False, False -> ok end), exit end, exit), %% ',' combinations of true/false, and non-boolean in variables. Glurf = id(glurf), ?line check(fun() -> if True, Glurf -> ok; true -> error end end, error), ?line check(fun() -> if Glurf, True -> ok; true -> error end end, error), ?line check(fun() -> if True, True -> ok end end, ok), ?line check(fun() -> if Glurf, Glurf -> ok; true -> error end end, error), ?line check(fun() -> {'EXIT',{if_clause,_}} = (catch if True, Glurf -> ok; Glurf, True -> ok; Glurf, Glurf -> ok end), exit end, exit), %% ',' combinations of true/false with errors. ATuple = id({a,b,c}), ?line check(fun() -> if True, element(42, ATuple) -> ok; true -> error end end, error), ?line check(fun() -> if element(42, ATuple), True -> ok; true -> error end end, error), ?line check(fun() -> if True, True -> ok end end, ok), ?line check(fun() -> if element(42, ATuple), element(42, ATuple) -> ok; true -> error end end, error), ?line check(fun() -> {'EXIT',{if_clause,_}} = (catch if True, element(42, ATuple) -> ok; element(42, ATuple), True -> ok; element(42, ATuple), element(42, ATuple) -> ok end), exit end, exit), ok. or_guard(Config) when is_list(Config) -> True = id(true), False = id(false), Glurf = id(glurf), %% 'or' combinations of literal true/false. ?line check(fun() -> if true or false -> ok end end, ok), ?line check(fun() -> if false or true -> ok end end, ok), ?line check(fun() -> if true or true -> ok end end, ok), ?line check(fun() -> if false or false -> ok; true -> error end end, error), ?line check(fun() -> if glurf or true -> ok; true -> error end end, error), ?line check(fun() -> if true or glurf -> ok; true -> error end end, error), ?line check(fun() -> if glurf or glurf -> ok; true -> error end end, error), ?line check(fun() -> {'EXIT',{if_clause,_}} = (catch if false or false -> ok end), exit end, exit), %% 'or' combinations using variables containing true/false. ?line check(fun() -> if True or False -> ok end end, ok), ?line check(fun() -> if False or True -> ok end end, ok), ?line check(fun() -> if True or True -> ok end end, ok), ?line check(fun() -> if False or False -> ok; true -> error end end, error), ?line check(fun() -> if True or Glurf -> ok; true -> error end end, error), ?line check(fun() -> if Glurf or True -> ok; true -> error end end, error), ?line check(fun() -> if Glurf or Glurf -> ok; true -> error end end, error), ?line check(fun() -> {'EXIT',{if_clause,_}} = (catch if False or False -> ok end), exit end, exit), ok. more_or_guards(Config) when is_list(Config) -> True = id(true), False = id(false), ATuple = id({false,true,gurka}), ?line check(fun() -> if element(42, ATuple) or False -> ok; true -> error end end, error), ?line check(fun() -> if False or element(42, ATuple) -> ok; true -> error end end, error), ?line check(fun() -> if element(18, ATuple) or element(42, ATuple) -> ok; true -> error end end, error), ?line check(fun() -> if True or element(42, ATuple) -> ok; true -> error end end, error), ?line check(fun() -> if element(42, ATuple) or True -> ok; true -> error end end, error), ?line check(fun() -> if element(1, ATuple) or element(42, ATuple) or True -> ok; true -> error end end, error), ?line check(fun() -> if element(1, ATuple) or True or element(42, ATuple) -> ok; true -> error end end, error), ?line check(fun() -> if (<<False:8>> == <<0>>) or element(2, ATuple) -> ok; true -> error end end, error), ?line check(fun() -> if element(2, ATuple) or (<<True:8>> == <<1>>) -> ok; true -> error end end, error), ?line check(fun() -> if element(2, ATuple) or element(42, ATuple) -> ok; true -> error end end, error), ?line check(fun() -> if element(1, ATuple) or element(2, ATuple) or element(19, ATuple) -> ok; true -> error end end, error), ok. complex_or_guards(Config) when is_list(Config) -> %% complex_or_1/2 ?line ok = complex_or_1({a,b,c,d}, {1,2,3}), ?line ok = complex_or_1({a,b,c,d}, {1}), ?line ok = complex_or_1({a}, {1,2,3}), ?line error = complex_or_1({a}, {1}), ?line error = complex_or_1(1, 2), ?line error = complex_or_1([], {a,b,c,d}), ?line error = complex_or_1({a,b,c,d}, []), %% complex_or_2/1 ?line ok = complex_or_2({true,{}}), ?line ok = complex_or_2({false,{a}}), ?line ok = complex_or_2({false,{a,b,c}}), ?line ok = complex_or_2({true,{a,b,c,d}}), ?line error = complex_or_2({blurf,{a,b,c}}), ?line error = complex_or_2({true}), ?line error = complex_or_2({true,no_tuple}), ?line error = complex_or_2({true,[]}), %% complex_or_3/2 ?line ok = complex_or_3({true}, {}), ?line ok = complex_or_3({false}, {a}), ?line ok = complex_or_3({false}, {a,b,c}), ?line ok = complex_or_3({true}, {a,b,c,d}), ?line ok = complex_or_3({false}, <<1,2,3>>), ?line ok = complex_or_3({true}, <<1,2,3,4>>), ?line error = complex_or_3(blurf, {a,b,c}), ?line error = complex_or_3({false}, <<1,2,3,4>>), ?line error = complex_or_3([], <<1,2>>), ?line error = complex_or_3({true}, 45), ?line error = complex_or_3(<<>>, <<>>), %% complex_or_4/2 ?line ok = complex_or_4(<<1,2,3>>, {true}), ?line ok = complex_or_4(<<1,2,3>>, {false}), ?line ok = complex_or_4(<<1,2,3>>, {true}), ?line ok = complex_or_4({1,2,3}, {true}), ?line error = complex_or_4({1,2,3,4}, {false}), ?line error = complex_or_4(<<1,2,3,4>>, []), ?line error = complex_or_4([], {true}), %% complex_or_5/2 ?line ok = complex_or_5(<<1>>, {false}), ?line ok = complex_or_5(<<1,2,3>>, {true}), ?line ok = complex_or_5(<<1,2,3,4>>, {false}), ?line ok = complex_or_5({1,2,3}, {false}), ?line ok = complex_or_5({1,2,3,4}, {false}), ?line error = complex_or_5(blurf, {false}), ?line error = complex_or_5(<<1>>, klarf), ?line error = complex_or_5(blurf, klarf), %% complex_or_6/2 ?line ok = complex_or_6({true,true}, {1,2,3,4}), ?line ok = complex_or_6({true,true}, <<1,2,3,4>>), ?line ok = complex_or_6({false,false}, <<1,2,3,4>>), ?line ok = complex_or_6({false,true}, <<1>>), ?line ok = complex_or_6({true,false}, {1}), ?line ok = complex_or_6({true,true}, {1}), ?line error = complex_or_6({false,false}, {1}), ?line error = complex_or_6({true}, {1,2,3,4}), ?line error = complex_or_6({}, {1,2,3,4}), ?line error = complex_or_6([], {1,2,3,4}), ?line error = complex_or_6([], {1,2,3,4}), ?line error = complex_or_6({true,false}, klurf), ok. complex_or_1(A, B) -> if ((3 < tuple_size(A)) and (tuple_size(A) < 9)) or ((2 < tuple_size(B)) and (tuple_size(B) < 7)) -> ok; true -> error end. complex_or_2(Tuple) -> if element(1, Tuple) or not (tuple_size(element(2, Tuple)) > 3) -> ok; true -> error end. complex_or_3(A, B) -> if not (size(B) > 3) or element(1, A) -> ok; true -> error end. complex_or_4(A, B) -> if not (is_tuple(A) and (size(A) > 3)) or element(1, B) -> ok; true -> error end. complex_or_5(A, B) -> if not (is_tuple(A) or (size(A) > 3)) or not element(1, B) -> ok; true -> error end. complex_or_6(A, B) -> if not (not element(1, A) and not element(2, A)) or not (not (size(B) > 3)) -> ok; true -> error end. and_guard(Config) when is_list(Config) -> %% 'and' combinations of literal true/false. ?line check(fun() -> if true and false -> ok; true -> error end end, error), ?line check(fun() -> if false and true -> ok; true -> error end end, error), ?line check(fun() -> if true and true -> ok end end, ok), ?line check(fun() -> if false and false -> ok; true -> error end end, error), ?line check(fun() -> if glurf and true -> ok; true -> error end end, error), ?line check(fun() -> if true and glurf -> ok; true -> error end end, error), ?line check(fun() -> if glurf and glurf -> ok; true -> error end end, error), ?line check(fun() -> {'EXIT',{if_clause,_}} = (catch if true and false -> ok; false and true -> ok; false and false -> ok end), exit end, exit), %% 'and' combinations of true/false in variables. True = id(true), False = id(false), ?line check(fun() -> if True and False -> ok; true -> error end end, error), ?line check(fun() -> if False and True -> ok; true -> error end end, error), ?line check(fun() -> if True and True -> ok end end, ok), ?line check(fun() -> if False and False -> ok; true -> error end end, error), ?line check(fun() -> {'EXIT',{if_clause,_}} = (catch if True and False -> ok; False and True -> ok; False and False -> ok end), exit end, exit), %% 'and' combinations of true/false and a non-boolean in variables. Glurf = id(glurf), ?line check(fun() -> if True and Glurf -> ok; true -> error end end, error), ?line check(fun() -> if Glurf and True -> ok; true -> error end end, error), ?line check(fun() -> if True and True -> ok end end, ok), ?line check(fun() -> if Glurf and Glurf -> ok; true -> error end end, error), ?line check(fun() -> {'EXIT',{if_clause,_}} = (catch if True and Glurf -> ok; Glurf and True -> ok; Glurf and Glurf -> ok end), exit end, exit), %% 'and' combinations of true/false with errors. ATuple = id({a,b,c}), ?line check(fun() -> if True and element(42, ATuple) -> ok; true -> error end end, error), ?line check(fun() -> if element(42, ATuple) and True -> ok; true -> error end end, error), ?line check(fun() -> if True and True -> ok end end, ok), ?line check(fun() -> if element(42, ATuple) and element(42, ATuple) -> ok; true -> error end end, error), ?line check(fun() -> {'EXIT',{if_clause,_}} = (catch if True and element(42, ATuple) -> ok; element(42, ATuple) and True -> ok; element(42, ATuple) and element(42, ATuple) -> ok end), exit end, exit), ?line ok = relprod({'Set',a,b}, {'Set',a,b}), ok. relprod(R1, R2) when (erlang:size(R1) =:= 3) and (erlang:element(1,R1) =:= 'Set'), (erlang:size(R2) =:= 3) and (erlang:element(1,R2) =:= 'Set') -> ok. xor_guard(Config) when is_list(Config) -> %% 'xor' combinations of literal true/false. ?line check(fun() -> if true xor false -> ok end end, ok), ?line check(fun() -> if false xor true -> ok end end, ok), ?line check(fun() -> if true xor true -> ok; true -> error end end, error), ?line check(fun() -> if false xor false -> ok; true -> error end end, error), ?line check(fun() -> {'EXIT',{if_clause,_}} = (catch if false xor false -> ok end), exit end, exit), ?line check(fun() -> {'EXIT',{if_clause,_}} = (catch if true xor true -> ok end), exit end, exit), %% 'xor' combinations using variables containing true/false. True = id(true), False = id(false), ?line check(fun() -> if True xor False -> ok end end, ok), ?line check(fun() -> if False xor True -> ok end end, ok), ?line check(fun() -> if True xor True -> ok; true -> error end end, error), ?line check(fun() -> if False xor False -> ok; true -> error end end, error), ?line check(fun() -> {'EXIT',{if_clause,_}} = (catch if False xor False -> ok end), exit end, exit), ?line check(fun() -> {'EXIT',{if_clause,_}} = (catch if True xor True -> ok end), exit end, exit), ok. more_xor_guards(Config) when is_list(Config) -> True = id(true), False = id(false), ATuple = id({false,true,gurka}), ?line check(fun() -> if element(42, ATuple) xor False -> ok; true -> error end end, error), ?line check(fun() -> if False xor element(42, ATuple) xor False -> ok; true -> error end end, error), ?line check(fun() -> if element(18, ATuple) xor element(42, ATuple) -> ok; true -> error end end, error), ?line check(fun() -> if True xor element(42, ATuple) -> ok; true -> error end end, error), ?line check(fun() -> if element(42, ATuple) xor True -> ok; true -> error end end, error), ok. build_in_guard(Config) when is_list(Config) -> SubBin = <<5.0/float>>, ?line B = <<1,SubBin/binary,3.5/float>>, ?line if B =:= <<1,SubBin/binary,3.5/float>> -> ok end. old_guard_tests(Config) when list(Config) -> %% Check that all the old guard tests are still recognized. ?line list = og(Config), ?line atom = og(an_atom), ?line binary = og(<<1,2>>), ?line float = og(3.14), ?line integer = og(43), ?line a_function = og(fun() -> ok end), ?line pid = og(self()), ?line reference = og(make_ref()), ?line tuple = og({}), ?line number = on(45.333), ?line number = on(-19), ok. og(V) when atom(V) -> atom; og(V) when binary(V) -> binary; og(V) when float(V) -> float; og(V) when integer(V) -> integer; og(V) when function(V) -> a_function; og(V) when list(V) -> list; og(V) when pid(V) -> pid; og(V) when port(V) -> port; og(V) when reference(V) -> reference; og(V) when tuple(V) -> tuple; og(_) -> what. on(V) when number(V) -> number; on(_) -> not_number. gbif(Config) when is_list(Config) -> ?line error = gbif_1(1, {false,true}), ?line ok = gbif_1(2, {false,true}), ok. gbif_1(P, T) when element(P, T) -> ok; gbif_1(_, _) -> error. t_is_boolean(Config) when is_list(Config) -> ?line true = is_boolean(true), ?line true = is_boolean(false), ?line true = is_boolean(id(true)), ?line true = is_boolean(id(false)), ?line false = is_boolean(glurf), ?line false = is_boolean(id(glurf)), ?line false = is_boolean([]), ?line false = is_boolean(id([])), ?line false = is_boolean(42), ?line false = is_boolean(id(-42)), ?line false = is_boolean(math:pi()), ?line false = is_boolean(384793478934378924978439789873478934897), ?line false = is_boolean(id(self())), ?line false = is_boolean(id({x,y,z})), ?line false = is_boolean(id([a,b,c])), ?line false = is_boolean(id(make_ref())), ?line false = is_boolean(id(<<1,2,3>>)), ?line false = is_boolean({id(x),y,z}), ?line false = is_boolean([id(a),b,c]), ?line ok = bool(true), ?line ok = bool(false), ?line ok = bool(id(true)), ?line ok = bool(id(false)), ?line error = bool(glurf), ?line error = bool(id(glurf)), ?line error = bool([]), ?line error = bool(id([])), ?line error = bool(42), ?line error = bool(id(-42)), ?line error = bool(math:pi()), ?line error = bool(384793478934378924978439789873478934897), ?line error = bool(id(self())), ?line error = bool(id({x,y,z})), ?line error = bool(id([a,b,c])), ?line error = bool(id(make_ref())), ?line error = bool(id(<<1,2,3>>)), ?line true = my_is_bool(true), ?line true = my_is_bool(false), ?line false = my_is_bool([]), ?line false = my_is_bool([1,2,3,4]), ?line false = my_is_bool({a,b,c}), ok. bool(X) when is_boolean(X) -> ok; bool(_) -> error. my_is_bool(V) -> Res = my_is_bool_a(V), Res = my_is_bool_b(V). my_is_bool_a(V) -> case V of true -> true; false -> true; _ -> false end. my_is_bool_b(V) -> case V of false -> true; true -> true; _ -> false end. is_function_2(Config) when is_list(Config) -> true = is_function(id(fun ?MODULE:all/1), 1), true = is_function(id(fun() -> ok end), 0), false = is_function(id(fun ?MODULE:all/1), 0), false = is_function(id(fun() -> ok end), 1), F = fun(_) -> ok end, if is_function(F, 1) -> ok end. tricky(Config) when is_list(Config) -> ?line not_ok = tricky_1(1, 2), ?line not_ok = tricky_1(1, blurf), ?line not_ok = tricky_1(foo, 2), ?line not_ok = tricky_1(a, b), ?line error = tricky_2(0.5), ?line error = tricky_2(a), ?line error = tricky_2({a,b,c}), ?line false = rb(100000, [1], 42), ?line true = rb(100000, [], 42), ?line true = rb(555, [a,b,c], 19), ok. tricky_1(X, Y) when abs((X == 1) or (Y == 2)) -> ok; tricky_1(_, _) -> not_ok. tricky_2(X) when float(X) or float(X) -> ok; tricky_2(_) -> error. %% From dets_v9:read_buckets/11, simplified. rb(Size, ToRead, SoFar) when SoFar + Size < 81920; ToRead == [] -> true; rb(_, _, _) -> false. -define(T(Op,A,B), ok = if A Op B -> ok; true -> error end, ok = if not (A Op B) -> error; true -> ok end, (fun(X, Y, True, False) -> ok = if X Op Y -> ok; true -> error end, ok = if False; X Op Y; False -> ok; true -> error end, ok = if X Op Y, True -> ok; true -> error end, ok = if not (X Op Y) -> error; true -> ok end, ok = if False; not (X Op Y); False -> error; true -> ok end end)(id(A), id(B), id(true), id(false))). -define(F(Op,A,B), ok = if A Op B -> error; true -> ok end, ok = if not (A Op B) -> ok; true -> error end, (fun(X, Y, True, False) -> ok = if X Op Y -> error; true -> ok end, ok = if False; X Op Y; False -> error; true -> ok end, ok = if not (X Op Y); False -> ok; true -> error end, ok = if not (X Op Y), True -> ok; true -> error end end)(id(A), id(B), id(true), id(false))). rel_ops(Config) when is_list(Config) -> ?line ?T(=/=, 1, 1.0), ?line ?F(=/=, 2, 2), ?line ?F(=/=, {a}, {a}), ?line ?F(/=, a, a), ?line ?F(/=, 0, 0.0), ?line ?T(/=, 0, 1), ?line ?F(/=, {a}, {a}), ?line ?T(==, 1, 1.0), ?line ?F(==, a, {}), ?line ?F(=:=, 1, 1.0), ?line ?T(=:=, 42.0, 42.0), ?line ?F(>, a, b), ?line ?T(>, 42, 1.0), ?line ?F(>, 42, 42.0), ?line ?T(<, a, b), ?line ?F(<, 42, 1.0), ?line ?F(<, 42, 42.0), ?line ?T(=<, 1.5, 5), ?line ?F(=<, -9, -100.344), ?line ?T(=<, 42, 42.0), ?line ?T(>=, 42, 42.0), ?line ?F(>=, a, b), ?line ?T(>=, 1.0, 0), %% Coverage of beam_block:is_exact_eq_ok/1 and collect/1. ?line true = any_atom /= id(42), ?line true = [] /= id(42), ok. -undef(TestOp). %% Test type tests on literal values. (From emulator test suites.) literal_type_tests(Config) when is_list(Config) -> case ?MODULE of guard_SUITE -> literal_type_tests_1(Config); _ -> {skip,"Enough to run this case once."} end. literal_type_tests_1(Config) -> %% Generate an Erlang module with all different type of type tests. ?line Tests = make_test([{T,L} || T <- type_tests(), L <- literals()] ++ [{is_function,L1,L2} || L1 <- literals(), L2 <- literals()]), ?line Mod = literal_test, ?line Func = {function, 0, test, 0, [{clause,0,[],[],Tests}]}, ?line Form = [{attribute,0,module,Mod}, {attribute,0,compile,export_all}, Func, {eof,0}], %% Print generated code for inspection. ?line lists:foreach(fun (F) -> io:put_chars([erl_pp:form(F),"\n"]) end, Form), %% Test compile:form/1. This implies full optimization (default). ?line {ok,Mod,Code1} = compile:forms(Form), ?line smoke_disasm(Config, Mod, Code1), ?line {module,Mod} = code:load_binary(Mod, Mod, Code1), ?line Mod:test(), ?line true = code:delete(Mod), ?line code:purge(Mod), %% Test compile:form/2. Turn off all optimizations. ?line {ok,Mod,Code2} = compile:forms(Form, [binary,report,time, no_copt,no_postopt]), ?line smoke_disasm(Config, Mod, Code2), ?line {module,Mod} = code:load_binary(Mod, Mod, Code2), ?line Mod:test(), ?line true = code:delete(Mod), ?line code:purge(Mod), ok. make_test([{T,L1,L2}|Ts]) -> [test(T, L1, L2)|make_test(Ts)]; make_test([{T,L}|Ts]) -> [test(T, L)|make_test(Ts)]; make_test([]) -> []. test(T, L) -> S0 = io_lib:format("begin io:format(\"~~p~~n\", [{~p,~p}]), if ~w(~w) -> true; true -> false end end. ", [T,L,T,L]), S = lists:flatten(S0), {ok,Toks,_Line} = erl_scan:string(S), {ok,E} = erl_parse:parse_exprs(Toks), {value,Val,_Bs} = erl_eval:exprs(E, []), {match,0,{atom,0,Val},hd(E)}. test(T, L1, L2) -> S0 = io_lib:format("begin io:format(\"~~p~~n\", [{~p,~p,~p}]), if ~w(~w, ~w) -> true; true -> false end end. ", [T,L1,L2,T,L1,L2]), S = lists:flatten(S0), {ok,Toks,_Line} = erl_scan:string(S), {ok,E} = erl_parse:parse_exprs(Toks), {value,Val,_Bs} = erl_eval:exprs(E, []), {match,0,{atom,0,Val},hd(E)}. smoke_disasm(Config, Mod, Bin) -> Priv = ?config(priv_dir, Config), File = filename:join(Priv, atom_to_list(Mod)++".beam"), ok = file:write_file(File, Bin), test_lib:smoke_disasm(File). literals() -> [42, 3.14, -3, 32982724987789283473473838474, [], xxxx, {a,b,c}, [a,list], <<1,2,3>>, <<42:17>>]. type_tests() -> [is_boolean, is_integer, is_float, is_number, is_atom, is_list, is_tuple, is_pid, is_reference, is_port, is_binary, is_function]. basic_andalso_orelse(Config) when is_list(Config) -> ?line T = id({type,integers,23,42}), ?line 65 = if ((element(1, T) =:= type) andalso (tuple_size(T) =:= 4) andalso element(2, T)) == integers -> element(3, T) + element(4, T); true -> error end, ?line 65 = case [] of [] when ((element(1, T) =:= type) andalso (tuple_size(T) =:= 4) andalso element(2, T)) == integers -> element(3, T) + element(4, T) end, ?line 42 = basic_rt({type,integers,40,2}), ?line 5.0 = basic_rt({vector,{3.0,4.0}}), ?line 20 = basic_rt(['+',3,7]), ?line {'Set',a,b} = basic_rt({{'Set',a,b},{'Set',a,b}}), ?line 12 = basic_rt({klurf,4}), ?line error = basic_rt({type,integers,40,2,3}), ?line error = basic_rt({kalle,integers,40,2}), ?line error = basic_rt({kalle,integers,40,2}), ?line error = basic_rt({1,2}), ?line error = basic_rt([]), RelProdBody = fun(R1, R2) -> if (erlang:size(R1) =:= 3) andalso (erlang:element(1,R1) =:= 'Set'), (erlang:size(R2) =:= 3) andalso (erlang:element(1,R2) =:= 'Set') -> ok end end, ?line ok = RelProdBody({'Set',a,b}, {'Set',a,b}), %% 'andalso'/'orelse' with calls known to fail already at compile time. %% Used to crash the code generator. error = (fun() -> R = {vars,true}, if is_record(R, vars, 2) andalso element(99, R) -> ok; true -> error end end)(), error = (fun(X) -> L = {a,b,c}, if is_list(X) andalso length(L) > 4 -> ok; true -> error end end)([]), ok. basic_rt(T) when is_tuple(T) andalso tuple_size(T) =:= 4 andalso element(1, T) =:= type andalso element(2, T) == integers -> element(3, T) + element(4, T); basic_rt(T) when is_tuple(T) andalso tuple_size(T) =:= 2 andalso element(1, T) =:= vector -> {X,Y} = element(2, T), if is_float(X), is_float(Y) -> math:sqrt(X*X+Y*Y) end; basic_rt(['+',A,B]) -> 2*id(A+B); basic_rt({R1,R2}) when erlang:size(R1) =:= 3 andalso erlang:element(1,R1) =:= 'Set', erlang:size(R2) =:= 3 andalso erlang:element(1,R2) =:= 'Set' -> R1 = id(R1), R2 = id(R2), R1; basic_rt(T) when is_tuple(T) andalso tuple_size(T) =:= 2 andalso element(1, T) =:= klurf -> 3*id(element(2, T)); basic_rt(_) -> error. traverse_dcd(Config) when is_list(Config) -> L0 = [{log_header,dcd_log,"1.0",a,b,c},{log_header,dcd_log,"2.0",a,b,c}, {log_header,dcd_log,"0.0",a,b,c},blurf], {cont,[{log_header,dcd_log,"0.0",a,b,c},blurf],log,funny} = traverse_dcd({cont,L0}, log, funny), L1 = [{log_header,dcd_log,"1.0"}], {cont,L1,log,funny} = traverse_dcd({cont,L1}, log, funny), L2 = [{a,tuple}], {cont,L2,log,funny} = traverse_dcd({cont,L2}, log, funny), ok. %% The function starts out with 3 arguments in {x,0}, {x,1}, {x,2}. %% The outer match of a two tuple will places the first element in {x,3} and %% second in {x,4}. The guard for the first clause must make ensure that all of those %% registers are restored before entering the second clause. %% %% (From mnesia_checkpoint.erl, modified.) traverse_dcd({Cont,[LogH|Rest]},Log,Fun) when is_tuple(LogH) andalso tuple_size(LogH) =:= 6 andalso element(1, LogH) =:= log_header andalso erlang:element(2,LogH) == dcd_log, is_tuple(LogH) andalso tuple_size(LogH) =:= 6 andalso element(1, LogH) =:= log_header andalso erlang:element(3,LogH) >= "1.0" -> traverse_dcd({Cont,Rest},Log,Fun); traverse_dcd({Cont,Recs},Log,Fun) -> {Cont,Recs,Log,Fun}. check_qlc_hrl(Config) when is_list(Config) -> St = {r1,false,dum}, ?line foo = cqlc(qlc, q, [{lc,1,2,3}], St), ?line foo = cqlc(qlc, q, [{lc,1,2,3},b], St), ?line St = cqlc(qlc, q, [], St), ?line St = cqlc(qlc, blurf, [{lc,1,2,3},b], St), ?line St = cqlc(q, q, [{lc,1,2,3},b], St), ?line St = cqlc(qlc, q, [{lc,1,2,3},b,c], St), ?line St = cqlc(qlc, q, [a,b], St), ?line {r1,true,kalle} = cqlc(qlc, q, [{lc,1,2,3},b], {r1,true,kalle}), ok. %% From erl_lint.erl; original name was check_qlc_hrl/4. cqlc(M, F, As, St) -> Arity = length(As), case As of [{lc,_L,_E,_Qs}|_] when M =:= qlc, F =:= q, Arity < 3, not (((element(1, St) =:= r1) orelse fail) and (tuple_size(St) =:= 3) and element(2, St)) -> foo; _ -> St end. %% OTP-7679: Thanks to Hunter Morris. andalso_semi(Config) when is_list(Config) -> ?line ok = andalso_semi_foo(0), ?line ok = andalso_semi_foo(1), ?line fc(catch andalso_semi_foo(2)), ?line ok = andalso_semi_bar([a,b,c]), ?line ok = andalso_semi_bar(1), ?line fc(catch andalso_semi_bar([a,b])), ok. andalso_semi_foo(Bar) when is_integer(Bar) andalso Bar =:= 0; Bar =:= 1 -> ok. andalso_semi_bar(Bar) when is_list(Bar) andalso length(Bar) =:= 3; Bar =:= 1 -> ok. tuple_size(Config) when is_list(Config) -> ?line 10 = do_tuple_size({1,2,3,4}), ?line fc(catch do_tuple_size({1,2,3})), ?line fc(catch do_tuple_size(42)), ?line error = ludicrous_tuple_size({a,b,c}), ?line error = ludicrous_tuple_size([a,b,c]), %% Test the "unsafe case" - the register assigned the tuple size is %% not killed. ?line DataDir = test_lib:get_data_dir(Config), ?line File = filename:join(DataDir, "guard_SUITE_tuple_size"), ?line {ok,Mod,Code} = compile:file(File, [from_asm,binary]), ?line code:load_binary(Mod, File, Code), ?line 14 = Mod:t({1,2,3,4}), ok. do_tuple_size(T) when tuple_size(T) =:= 4 -> {A,B,C,D} = T, A+B+C+D. ludicrous_tuple_size(T) when tuple_size(T) =:= 16#7777777777777777777777777777777777 -> ok; ludicrous_tuple_size(T) when tuple_size(T) =:= 16#10000000000000000 -> ok; ludicrous_tuple_size(T) when tuple_size(T) =:= (1 bsl 64) - 1 -> ok; ludicrous_tuple_size(T) when tuple_size(T) =:= 16#FFFFFFFFFFFFFFFF -> ok; ludicrous_tuple_size(_) -> error. %% Call this function to turn off constant propagation. id(I) -> I. check(F, Result) -> case F() of Result -> ok; Other -> io:format("Expected: ~p\n", [Result]), io:format(" Got: ~p\n", [Other]), test_server:fail() end. fc({'EXIT',{function_clause,_}}) -> ok; fc({'EXIT',{{case_clause,_},_}}) when ?MODULE =:= guard_inline_SUITE -> ok.