diff options
Diffstat (limited to 'lib/dialyzer/src/dialyzer_behaviours.erl')
| -rw-r--r-- | lib/dialyzer/src/dialyzer_behaviours.erl | 58 |
1 files changed, 40 insertions, 18 deletions
diff --git a/lib/dialyzer/src/dialyzer_behaviours.erl b/lib/dialyzer/src/dialyzer_behaviours.erl index 82963783d8..a30707c7c3 100644 --- a/lib/dialyzer/src/dialyzer_behaviours.erl +++ b/lib/dialyzer/src/dialyzer_behaviours.erl @@ -88,20 +88,26 @@ get_warnings(Module, [Behaviour|Rest], State, Acc) -> NewAcc = check_behaviour(Module, Behaviour, State, Acc), get_warnings(Module, Rest, State, NewAcc). -check_behaviour(Module, Behaviour, #state{plt = Plt}, Acc) -> +check_behaviour(Module, Behaviour, #state{plt = Plt} = State, Acc) -> case dialyzer_plt:lookup_callbacks(Plt, Behaviour) of [] -> [{callback_info_missing, [Behaviour]}|Acc]; - Callbacks -> check_all_callbacks(Module, Behaviour, Callbacks, Plt, Acc) + Callbacks -> check_all_callbacks(Module, Behaviour, Callbacks, State, Acc) end. -check_all_callbacks(_Module, _Behaviour, [], _Plt, Acc) -> +check_all_callbacks(_Module, _Behaviour, [], _State, Acc) -> Acc; -check_all_callbacks(Module, Behaviour, [Cb|Rest], Plt, Acc) -> +check_all_callbacks(Module, Behaviour, [Cb|Rest], + #state{plt = Plt, codeserver = Codeserver} = State, Acc) -> {{Behaviour, Function, Arity}, {{_BehFile, _BehLine}, Callback}} = Cb, CbMFA = {Module, Function, Arity}, CbReturnType = dialyzer_contracts:get_contract_return(Callback), CbArgTypes = dialyzer_contracts:get_contract_args(Callback), + Records = + case dict:find(Module, dialyzer_codeserver:get_records(Codeserver)) of + {ok, V} -> V; + error -> dict:new() + end, Acc0 = Acc, Acc1 = case dialyzer_plt:lookup(Plt, CbMFA) of @@ -117,8 +123,9 @@ check_all_callbacks(Module, Behaviour, [Cb|Rest], Plt, Acc) -> erl_types:t_inf(ReturnType, CbReturnType)) of false -> Acc00; true -> - [{callback_type_mismatch,[Behaviour, Function, - Arity, ReturnType]}|Acc00] + [{callback_type_mismatch, + [Behaviour, Function, Arity, + erl_types:t_to_string(ReturnType, Records)]}|Acc00] end end, Acc02 = @@ -127,32 +134,44 @@ check_all_callbacks(Module, Behaviour, [Cb|Rest], Plt, Acc) -> false -> Acc01; true -> find_mismatching_args(ArgTypes, CbArgTypes, Behaviour, - Function, Arity, 1, Acc01) + Function, Arity, Records, 1, Acc01) end, Acc02 end, Acc2 = - case dialyzer_plt:lookup_contract(Plt, CbMFA) of - 'none' -> Acc1; - {value, _Contract} -> - %% TODO: Check spec for discrepancies - Acc1 + case dialyzer_codeserver:lookup_mfa_contract(CbMFA, Codeserver) of + 'error' -> Acc1; + {ok, {{File, Line}, Contract}} -> + Acc10 = Acc1, + SpecReturnType = dialyzer_contracts:get_contract_return(Contract), + SpecArgTypes = dialyzer_contracts:get_contract_args(Contract), + Acc11 = + case erl_types:t_is_subtype(SpecReturnType, CbReturnType) of + true -> Acc10; + false -> [{callback_spec_type_mismatch, + [File, Line, Behaviour, Function, Arity, + erl_types:t_to_string(SpecReturnType, Records), + erl_types:t_to_string(CbReturnType, Records)]}|Acc10] + end, + Acc11 end, NewAcc = Acc2, - check_all_callbacks(Module, Behaviour, Rest, Plt, NewAcc). + check_all_callbacks(Module, Behaviour, Rest, State, NewAcc). -find_mismatching_args([], [], _Behaviour, _Function, _Arity, _N, Acc) -> +find_mismatching_args([], [], _Beh, _Function, _Arity, _Records, _N, Acc) -> Acc; find_mismatching_args([Type|Rest], [CbType|CbRest], Behaviour, - Function, Arity, N, Acc) -> + Function, Arity, Records, N, Acc) -> case erl_types:t_is_none(erl_types:t_inf(Type, CbType)) of false -> - find_mismatching_args(Rest, CbRest, Behaviour, Function, Arity, N+1, Acc); + find_mismatching_args(Rest, CbRest, Behaviour, Function, + Arity, Records, N+1, Acc); true -> NewAcc = [{callback_arg_type_mismatch, - [Behaviour, Function, Arity, N, Type]}|Acc], - find_mismatching_args(Rest, CbRest, Behaviour, Function, Arity, N+1, NewAcc) + [Behaviour, Function, Arity, N, erl_types:t_to_string(Type, Records)]}|Acc], + find_mismatching_args(Rest, CbRest, Behaviour, Function, + Arity, Records, N+1, NewAcc) end. add_tag_file_line(_Module, {Tag, [B|_R]} = Warn, State) @@ -160,6 +179,9 @@ add_tag_file_line(_Module, {Tag, [B|_R]} = Warn, State) Tag =:= callback_info_missing -> {B, Line} = lists:keyfind(B, 1, State#state.behlines), {?WARN_BEHAVIOUR, {State#state.filename, Line}, Warn}; +add_tag_file_line(Module, {Tag, [File, Line|R]}, State) + when Tag =:= callback_spec_type_mismatch -> + {?WARN_BEHAVIOUR, {File, Line}, {Tag, R}}; add_tag_file_line(Module, {_Tag, [_B, Fun, Arity|_R]} = Warn, State) -> {_A, FunCode} = dialyzer_codeserver:lookup_mfa_code({Module, Fun, Arity}, |