diff options
Diffstat (limited to 'lib/dialyzer')
| -rw-r--r-- | lib/dialyzer/src/dialyzer_dataflow.erl | 47 |
1 files changed, 32 insertions, 15 deletions
diff --git a/lib/dialyzer/src/dialyzer_dataflow.erl b/lib/dialyzer/src/dialyzer_dataflow.erl index 0e51ce059c..1723380c8c 100644 --- a/lib/dialyzer/src/dialyzer_dataflow.erl +++ b/lib/dialyzer/src/dialyzer_dataflow.erl @@ -2250,24 +2250,30 @@ handle_guard_and(Guard, Map, Env, Eval, State) -> catch throw:{fail, _} -> bind_guard(Arg2, Map, Env, pos, State) end, {Map2, Type2} = - try bind_guard(Arg1, Map, Env, neg, State) - catch throw:{fail, _} -> bind_guard(Arg2, Map, Env, pos, State) + try bind_guard(Arg2, Map, Env, neg, State) + catch throw:{fail, _} -> bind_guard(Arg1, Map, Env, pos, State) end, case t_is_atom(false, Type1) orelse t_is_atom(false, Type2) of true -> {join_maps([Map1, Map2], Map), t_atom(false)}; false -> throw({fail, none}) end; dont_know -> - True = t_atom(true), {Map1, Type1} = bind_guard(Arg1, Map, Env, dont_know, State), - case t_is_none(t_inf(Type1, t_boolean())) of - true -> throw({fail, none}); + {Map2, Type2} = bind_guard(Arg2, Map, Env, dont_know, State), + Bool1 = t_inf(Type1, t_boolean()), + Bool2 = t_inf(Type2, t_boolean()), + case t_is_none(Bool1) orelse t_is_none(Bool2) of + true -> throw({fatal_fail, none}); false -> - {Map2, Type2} = bind_guard(Arg2, Map1, Env, Eval, State), - case t_is_none(t_inf(Type2, t_boolean())) of - true -> throw({fail, none}); - false -> {Map2, True} - end + NewMap = join_maps([Map1, Map2], Map), + NewType = + case {t_atom_vals(Bool1), t_atom_vals(Bool2)} of + {['true'] , ['true'] } -> t_atom(true); + {['false'], _ } -> t_atom(false); + {_ , ['false']} -> t_atom(false); + {_ , _ } -> t_boolean() + end, + {NewMap, NewType} end end. @@ -2303,11 +2309,22 @@ handle_guard_or(Guard, Map, Env, Eval, State) -> end end; dont_know -> - {Map1, Bool1} = bind_guard(Arg1, Map, Env, dont_know, State), - {Map2, Bool2} = bind_guard(Arg2, Map, Env, dont_know, State), - case t_is_boolean(Bool1) andalso t_is_boolean(Bool2) of - true -> {join_maps([Map1, Map2], Map), t_sup(Bool1, Bool2)}; - false -> throw({fail, none}) + {Map1, Type1} = bind_guard(Arg1, Map, Env, dont_know, State), + {Map2, Type2} = bind_guard(Arg2, Map, Env, dont_know, State), + Bool1 = t_inf(Type1, t_boolean()), + Bool2 = t_inf(Type2, t_boolean()), + case t_is_none(Bool1) orelse t_is_none(Bool2) of + true -> throw({fatal_fail, none}); + false -> + NewMap = join_maps([Map1, Map2], Map), + NewType = + case {t_atom_vals(Bool1), t_atom_vals(Bool2)} of + {['false'], ['false']} -> t_atom(false); + {['true'] , _ } -> t_atom(true); + {_ , ['true'] } -> t_atom(true); + {_ , _ } -> t_boolean() + end, + {NewMap, NewType} end end. |