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-rw-r--r--lib/dialyzer/src/dialyzer_contracts.erl101
1 files changed, 52 insertions, 49 deletions
diff --git a/lib/dialyzer/src/dialyzer_contracts.erl b/lib/dialyzer/src/dialyzer_contracts.erl
index 2bedf99e42..bcdcf2685d 100644
--- a/lib/dialyzer/src/dialyzer_contracts.erl
+++ b/lib/dialyzer/src/dialyzer_contracts.erl
@@ -21,7 +21,7 @@
-module(dialyzer_contracts).
-export([check_contract/2,
- check_contracts/3,
+ check_contracts/3,
contracts_without_fun/3,
contract_to_string/1,
get_invalid_contract_warnings/3,
@@ -106,13 +106,13 @@ contract_to_string(#contract{forms = Forms}) ->
contract_to_string_1([{Contract, []}]) ->
strip_fun(erl_types:t_form_to_string(Contract));
contract_to_string_1([{Contract, []}|Rest]) ->
- strip_fun(erl_types:t_form_to_string(Contract)) ++ "\n ; "
+ strip_fun(erl_types:t_form_to_string(Contract)) ++ "\n ; "
++ contract_to_string_1(Rest);
contract_to_string_1([{Contract, Constraints}]) ->
- strip_fun(erl_types:t_form_to_string(Contract)) ++ " when "
+ strip_fun(erl_types:t_form_to_string(Contract)) ++ " when "
++ constraints_to_string(Constraints);
contract_to_string_1([{Contract, Constraints}|Rest]) ->
- strip_fun(erl_types:t_form_to_string(Contract)) ++ " when "
+ strip_fun(erl_types:t_form_to_string(Contract)) ++ " when "
++ constraints_to_string(Constraints) ++ ";" ++
contract_to_string_1(Rest).
@@ -130,7 +130,7 @@ constraints_to_string([{type, _, constraint, [{atom, _, What}, Types]}]) ->
sequence([erl_types:t_form_to_string(T) || T <- Types], ",") ++ ")";
constraints_to_string([{type, _, constraint, [{atom, _, What}, Types]}|Rest]) ->
atom_to_list(What) ++ "(" ++
- sequence([erl_types:t_form_to_string(T) || T <- Types], ",")
+ sequence([erl_types:t_form_to_string(T) || T <- Types], ",")
++ "), " ++ constraints_to_string(Rest).
sequence([], _Delimiter) -> "";
@@ -156,27 +156,30 @@ process_contract_remote_types(CodeServer) ->
end,
NewContractDict = dict:map(ModuleFun, TmpContractDict),
dialyzer_codeserver:finalize_contracts(NewContractDict, CodeServer).
-
+
-spec check_contracts([{mfa(), file_contract()}],
dialyzer_callgraph:callgraph(), dict()) -> plt_contracts().
check_contracts(Contracts, Callgraph, FunTypes) ->
FoldFun =
- fun(Label, Type, NewContracts) ->
- {ok, {M,F,A} = MFA} = dialyzer_callgraph:lookup_name(Label, Callgraph),
- case orddict:find(MFA, Contracts) of
- {ok, {_FileLine, Contract}} ->
- case check_contract(Contract, Type) of
- ok ->
- case erl_bif_types:is_known(M, F, A) of
- true ->
- %% Disregard the contracts since
- %% this is a known function.
- NewContracts;
- false ->
- [{MFA, Contract}|NewContracts]
+ fun(Label, Type, NewContracts) ->
+ case dialyzer_callgraph:lookup_name(Label, Callgraph) of
+ {ok, {M,F,A} = MFA} ->
+ case orddict:find(MFA, Contracts) of
+ {ok, {_FileLine, Contract}} ->
+ case check_contract(Contract, Type) of
+ ok ->
+ case erl_bif_types:is_known(M, F, A) of
+ true ->
+ %% Disregard the contracts since
+ %% this is a known function.
+ NewContracts;
+ false ->
+ [{MFA, Contract}|NewContracts]
+ end;
+ {error, _Error} -> NewContracts
end;
- {error, _Error} -> NewContracts
+ error -> NewContracts
end;
error -> NewContracts
end
@@ -187,8 +190,8 @@ check_contracts(Contracts, Callgraph, FunTypes) ->
-spec check_contract(#contract{}, erl_types:erl_type()) -> 'ok' | {'error', term()}.
check_contract(#contract{contracts = Contracts}, SuccType) ->
- try
- Contracts1 = [{Contract, insert_constraints(Constraints, dict:new())}
+ try
+ Contracts1 = [{Contract, insert_constraints(Constraints, dict:new())}
|| {Contract, Constraints} <- Contracts],
Contracts2 = [erl_types:t_subst(Contract, Dict)
|| {Contract, Dict} <- Contracts1],
@@ -197,7 +200,7 @@ check_contract(#contract{contracts = Contracts}, SuccType) ->
error ->
{error, {overlapping_contract, []}};
ok ->
- InfList = [erl_types:t_inf(Contract, SuccType, opaque)
+ InfList = [erl_types:t_inf(Contract, SuccType, opaque)
|| Contract <- Contracts2],
case check_contract_inf_list(InfList, SuccType) of
{error, _} = Invalid -> Invalid;
@@ -229,7 +232,7 @@ check_contract_inf_list([FunType|Left], SuccType) ->
STRange = erl_types:t_fun_range(SuccType),
case erl_types:t_is_none_or_unit(STRange) of
true -> ok;
- false ->
+ false ->
Range = erl_types:t_fun_range(FunType),
case erl_types:t_is_none(erl_types:t_inf(STRange, Range, opaque)) of
true -> check_contract_inf_list(Left, SuccType);
@@ -261,9 +264,9 @@ check_extraneous_1(Contract, SuccType) ->
process_contracts(OverContracts, Args) ->
process_contracts(OverContracts, Args, erl_types:t_none()).
-
+
process_contracts([OverContract|Left], Args, AccRange) ->
- NewAccRange =
+ NewAccRange =
case process_contract(OverContract, Args) of
error -> AccRange;
{ok, Range} -> erl_types:t_sup(AccRange, Range)
@@ -276,12 +279,12 @@ process_contracts([], _Args, AccRange) ->
process_contract({Contract, Constraints}, CallTypes0) ->
CallTypesFun = erl_types:t_fun(CallTypes0, erl_types:t_any()),
- ContArgsFun = erl_types:t_fun(erl_types:t_fun_args(Contract),
+ ContArgsFun = erl_types:t_fun(erl_types:t_fun_args(Contract),
erl_types:t_any()),
?debug("Instance: Contract: ~s\n Arguments: ~s\n",
- [erl_types:t_to_string(ContArgsFun),
+ [erl_types:t_to_string(ContArgsFun),
erl_types:t_to_string(CallTypesFun)]),
- case solve_constraints(ContArgsFun, CallTypesFun, Constraints) of
+ case solve_constraints(ContArgsFun, CallTypesFun, Constraints) of
{ok, VarDict} ->
{ok, erl_types:t_subst(erl_types:t_fun_range(Contract), VarDict)};
error -> error
@@ -291,7 +294,7 @@ solve_constraints(Contract, Call, Constraints) ->
%% First make sure the call follows the constraints
CDict = insert_constraints(Constraints, dict:new()),
Contract1 = erl_types:t_subst(Contract, CDict),
- %% Just a safe over-approximation.
+ %% Just a safe over-approximation.
%% TODO: Find the types for type variables properly
ContrArgs = erl_types:t_fun_args(Contract1),
CallArgs = erl_types:t_fun_args(Call),
@@ -312,7 +315,7 @@ solve_constraints(Contract, Call, Constraints) ->
-spec contracts_without_fun(dict(), [_], dialyzer_callgraph:callgraph()) -> [dial_warning()].
contracts_without_fun(Contracts, AllFuns0, Callgraph) ->
- AllFuns1 = [{dialyzer_callgraph:lookup_name(Label, Callgraph), Arity}
+ AllFuns1 = [{dialyzer_callgraph:lookup_name(Label, Callgraph), Arity}
|| {Label, Arity} <- AllFuns0],
AllFuns2 = [{M, F, A} || {{ok, {M, F, _}}, A} <- AllFuns1],
AllContractMFAs = dict:fetch_keys(Contracts),
@@ -354,9 +357,9 @@ contract_from_form(Forms, RecDict) ->
{CFuns, Forms1} = contract_from_form(Forms, RecDict, [], []),
#tmp_contract{contract_funs = CFuns, forms = Forms1}.
-contract_from_form([{type, _, 'fun', [_, _]} = Form | Left], RecDict,
+contract_from_form([{type, _, 'fun', [_, _]} = Form | Left], RecDict,
TypeAcc, FormAcc) ->
- TypeFun =
+ TypeFun =
fun(ExpTypes, AllRecords) ->
Type = erl_types:t_from_form(Form, RecDict),
NewType = erl_types:t_solve_remote(Type, ExpTypes, AllRecords),
@@ -365,10 +368,10 @@ contract_from_form([{type, _, 'fun', [_, _]} = Form | Left], RecDict,
NewTypeAcc = [TypeFun | TypeAcc],
NewFormAcc = [{Form, []} | FormAcc],
contract_from_form(Left, RecDict, NewTypeAcc, NewFormAcc);
-contract_from_form([{type, _L1, bounded_fun,
+contract_from_form([{type, _L1, bounded_fun,
[{type, _L2, 'fun', [_, _]} = Form, Constr]}| Left],
RecDict, TypeAcc, FormAcc) ->
- TypeFun =
+ TypeFun =
fun(ExpTypes, AllRecords) ->
Constr1 = [constraint_from_form(C, RecDict, ExpTypes, AllRecords)
|| C <- Constr],
@@ -376,14 +379,14 @@ contract_from_form([{type, _L1, bounded_fun,
Type = erl_types:t_from_form(Form, RecDict, VarDict),
NewType = erl_types:t_solve_remote(Type, ExpTypes, AllRecords),
{NewType, Constr1}
- end,
+ end,
NewTypeAcc = [TypeFun | TypeAcc],
NewFormAcc = [{Form, Constr} | FormAcc],
contract_from_form(Left, RecDict, NewTypeAcc, NewFormAcc);
-contract_from_form([], _RecDict, TypeAcc, FormAcc) ->
+contract_from_form([], _RecDict, TypeAcc, FormAcc) ->
{lists:reverse(TypeAcc), lists:reverse(FormAcc)}.
-constraint_from_form({type, _, constraint, [{atom, _, is_subtype},
+constraint_from_form({type, _, constraint, [{atom, _, is_subtype},
[Type1, Type2]]}, RecDict,
ExpTypes, AllRecords) ->
T1 = erl_types:t_from_form(Type1, RecDict),
@@ -396,7 +399,7 @@ constraint_from_form({type, _, constraint, [{atom,_,Name}, List]}, _RecDict,
N = length(List),
throw({error, io_lib:format("Unsupported type guard ~w/~w\n", [Name, N])}).
-%% Gets the most general domain of a list of domains of all
+%% Gets the most general domain of a list of domains of all
%% the overloaded contracts
general_domain(List) ->
@@ -425,7 +428,7 @@ get_invalid_contract_warnings_modules([Mod|Mods], CodeServer, Plt, Acc) ->
get_invalid_contract_warnings_modules([], _CodeServer, _Plt, Acc) ->
Acc.
-get_invalid_contract_warnings_funs([{MFA, {FileLine, Contract}}|Left],
+get_invalid_contract_warnings_funs([{MFA, {FileLine, Contract}}|Left],
Plt, RecDict, Acc) ->
case dialyzer_plt:lookup(Plt, MFA) of
none ->
@@ -453,15 +456,15 @@ get_invalid_contract_warnings_funs([{MFA, {FileLine, Contract}}|Left],
BifRet = erl_bif_types:type(M, F, A),
BifSig = erl_types:t_fun(BifArgs, BifRet),
case check_contract(Contract, BifSig) of
- {error, _} ->
+ {error, _} ->
[invalid_contract_warning(MFA, FileLine, BifSig, RecDict)
|Acc];
ok ->
- picky_contract_check(CSig, BifSig, MFA, FileLine,
+ picky_contract_check(CSig, BifSig, MFA, FileLine,
Contract, RecDict, Acc)
end;
false ->
- picky_contract_check(CSig, Sig, MFA, FileLine, Contract,
+ picky_contract_check(CSig, Sig, MFA, FileLine, Contract,
RecDict, Acc)
end
end,
@@ -485,12 +488,12 @@ picky_contract_check(CSig0, Sig0, MFA, FileLine, Contract, RecDict, Acc) ->
Sig = erl_types:t_abstract_records(Sig0, RecDict),
case erl_types:t_is_equal(CSig, Sig) of
true -> Acc;
- false ->
+ false ->
case (erl_types:t_is_none(erl_types:t_fun_range(Sig)) andalso
erl_types:t_is_unit(erl_types:t_fun_range(CSig))) of
true -> Acc;
false ->
- case extra_contract_warning(MFA, FileLine, Contract,
+ case extra_contract_warning(MFA, FileLine, Contract,
CSig, Sig, RecDict) of
no_warning -> Acc;
{warning, Warning} -> [Warning|Acc]
@@ -509,16 +512,16 @@ extra_contract_warning({M, F, A}, FileLine, Contract, CSig, Sig, RecDict) ->
ContractString = contract_to_string(Contract),
{Tag, Msg} =
case erl_types:t_is_subtype(CSig, Sig) of
- true ->
- {?WARN_CONTRACT_SUBTYPE,
+ true ->
+ {?WARN_CONTRACT_SUBTYPE,
{contract_subtype, [M, F, A, ContractString, SigString]}};
false ->
case erl_types:t_is_subtype(Sig, CSig) of
true ->
- {?WARN_CONTRACT_SUPERTYPE,
+ {?WARN_CONTRACT_SUPERTYPE,
{contract_supertype, [M, F, A, ContractString, SigString]}};
false ->
- {?WARN_CONTRACT_NOT_EQUAL,
+ {?WARN_CONTRACT_NOT_EQUAL,
{contract_diff, [M, F, A, ContractString, SigString]}}
end
end,
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-02 22:31:21 +0000