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authorJosé Valim <[email protected]>2013-05-08 16:37:28 -0600
committerFredrik Gustafsson <[email protected]>2013-05-28 14:33:49 +0200
commit641e18ccac9e5f346dcac51f65385f8656bcdce1 (patch)
tree20a36c04475df3d636d3a6b5582db3b4098ad091 /lib/stdlib
parent80c02173c9fc1d76ac1b404a05e2706817a4c308 (diff)
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Improve erl_lint performance
The default_types() in erl_lint returned a dictionary with all default types. However, calculating this dict was expensive and we actually didn't use the default values in this dictionary. This patch replaces the dictionary use for one function that checks if the type is a default type or not, and remove the bits that checked explicitly for those default types when iterating the dictionary.
Diffstat (limited to 'lib/stdlib')
-rw-r--r--lib/stdlib/src/erl_lint.erl134
1 files changed, 63 insertions, 71 deletions
diff --git a/lib/stdlib/src/erl_lint.erl b/lib/stdlib/src/erl_lint.erl
index 68a8534f15..b37ee5066c 100644
--- a/lib/stdlib/src/erl_lint.erl
+++ b/lib/stdlib/src/erl_lint.erl
@@ -522,8 +522,7 @@ start(File, Opts) ->
warn_format = value_option(warn_format, 1, warn_format, 1,
nowarn_format, 0, Opts),
enabled_warnings = Enabled,
- file = File,
- types = default_types()
+ file = File
}.
%% is_warn_enabled(Category, St) -> boolean().
@@ -1007,7 +1006,7 @@ check_undefined_functions(#lint{called=Called0,defined=Def0}=St0) ->
check_undefined_types(#lint{usage=Usage,types=Def}=St0) ->
Used = Usage#usage.used_types,
UTAs = dict:fetch_keys(Used),
- Undef = [{TA,dict:fetch(TA, Used)} || TA <- UTAs, not dict:is_key(TA, Def)],
+ Undef = [{TA,dict:fetch(TA, Used)} || TA <- UTAs, not dict:is_key(TA, Def), not is_default_type(TA)],
foldl(fun ({TA,L}, St) ->
add_error(L, {undefined_type,TA}, St)
end, St0, Undef).
@@ -2440,7 +2439,7 @@ type_def(Attr, Line, TypeName, ProtoType, Args, St0) ->
end,
case (dict:is_key(TypePair, TypeDefs) orelse is_var_arity_type(TypeName)) of
true ->
- case dict:is_key(TypePair, default_types()) of
+ case is_default_type(TypePair) of
true ->
case is_newly_introduced_builtin_type(TypePair) of
%% allow some types just for bootstrapping
@@ -2488,8 +2487,8 @@ check_type({paren_type, _L, [Type]}, SeenVars, St) ->
check_type({remote_type, L, [{atom, _, Mod}, {atom, _, Name}, Args]},
SeenVars, #lint{module=CurrentMod} = St) ->
St1 =
- case (dict:is_key({Name, length(Args)}, default_types())
- orelse is_var_arity_type(Name)) of
+ case is_default_type({Name, length(Args)})
+ orelse is_var_arity_type(Name) of
true -> add_error(L, {imported_predefined_type, Name}, St);
false -> St
end,
@@ -2606,63 +2605,62 @@ is_var_arity_type(union) -> true;
is_var_arity_type(record) -> true;
is_var_arity_type(_) -> false.
-default_types() ->
- DefTypes = [{any, 0},
- {arity, 0},
- {array, 0},
- {atom, 0},
- {atom, 1},
- {binary, 0},
- {binary, 2},
- {bitstring, 0},
- {bool, 0},
- {boolean, 0},
- {byte, 0},
- {char, 0},
- {dict, 0},
- {digraph, 0},
- {float, 0},
- {'fun', 0},
- {'fun', 2},
- {function, 0},
- {gb_set, 0},
- {gb_tree, 0},
- {identifier, 0},
- {integer, 0},
- {integer, 1},
- {iodata, 0},
- {iolist, 0},
- {list, 0},
- {list, 1},
- {maybe_improper_list, 0},
- {maybe_improper_list, 2},
- {mfa, 0},
- {module, 0},
- {neg_integer, 0},
- {nil, 0},
- {no_return, 0},
- {node, 0},
- {non_neg_integer, 0},
- {none, 0},
- {nonempty_list, 0},
- {nonempty_list, 1},
- {nonempty_improper_list, 2},
- {nonempty_maybe_improper_list, 0},
- {nonempty_maybe_improper_list, 2},
- {nonempty_string, 0},
- {number, 0},
- {pid, 0},
- {port, 0},
- {pos_integer, 0},
- {queue, 0},
- {range, 2},
- {reference, 0},
- {set, 0},
- {string, 0},
- {term, 0},
- {timeout, 0},
- {var, 1}],
- dict:from_list([{T, -1} || T <- DefTypes]).
+is_default_type({any, 0}) -> true;
+is_default_type({arity, 0}) -> true;
+is_default_type({array, 0}) -> true;
+is_default_type({atom, 0}) -> true;
+is_default_type({atom, 1}) -> true;
+is_default_type({binary, 0}) -> true;
+is_default_type({binary, 2}) -> true;
+is_default_type({bitstring, 0}) -> true;
+is_default_type({bool, 0}) -> true;
+is_default_type({boolean, 0}) -> true;
+is_default_type({byte, 0}) -> true;
+is_default_type({char, 0}) -> true;
+is_default_type({dict, 0}) -> true;
+is_default_type({digraph, 0}) -> true;
+is_default_type({float, 0}) -> true;
+is_default_type({'fun', 0}) -> true;
+is_default_type({'fun', 2}) -> true;
+is_default_type({function, 0}) -> true;
+is_default_type({gb_set, 0}) -> true;
+is_default_type({gb_tree, 0}) -> true;
+is_default_type({identifier, 0}) -> true;
+is_default_type({integer, 0}) -> true;
+is_default_type({integer, 1}) -> true;
+is_default_type({iodata, 0}) -> true;
+is_default_type({iolist, 0}) -> true;
+is_default_type({list, 0}) -> true;
+is_default_type({list, 1}) -> true;
+is_default_type({maybe_improper_list, 0}) -> true;
+is_default_type({maybe_improper_list, 2}) -> true;
+is_default_type({mfa, 0}) -> true;
+is_default_type({module, 0}) -> true;
+is_default_type({neg_integer, 0}) -> true;
+is_default_type({nil, 0}) -> true;
+is_default_type({no_return, 0}) -> true;
+is_default_type({node, 0}) -> true;
+is_default_type({non_neg_integer, 0}) -> true;
+is_default_type({none, 0}) -> true;
+is_default_type({nonempty_list, 0}) -> true;
+is_default_type({nonempty_list, 1}) -> true;
+is_default_type({nonempty_improper_list, 2}) -> true;
+is_default_type({nonempty_maybe_improper_list, 0}) -> true;
+is_default_type({nonempty_maybe_improper_list, 2}) -> true;
+is_default_type({nonempty_string, 0}) -> true;
+is_default_type({number, 0}) -> true;
+is_default_type({pid, 0}) -> true;
+is_default_type({port, 0}) -> true;
+is_default_type({pos_integer, 0}) -> true;
+is_default_type({queue, 0}) -> true;
+is_default_type({range, 2}) -> true;
+is_default_type({reference, 0}) -> true;
+is_default_type({set, 0}) -> true;
+is_default_type({string, 0}) -> true;
+is_default_type({term, 0}) -> true;
+is_default_type({timeout, 0}) -> true;
+is_default_type({var, 1}) -> true;
+is_default_type(_) -> false.
%% R13
is_newly_introduced_builtin_type({arity, 0}) -> true;
@@ -2776,10 +2774,7 @@ check_unused_types(Forms, #lint{usage=Usage, types=Ts, exp_types=ExpTs}=St) ->
L = gb_sets:to_list(ExpTs) ++ dict:fetch_keys(D),
UsedTypes = gb_sets:from_list(L),
FoldFun =
- fun(_Type, -1, AccSt) ->
- %% Default type
- AccSt;
- (Type, #typeinfo{line = FileLine}, AccSt) ->
+ fun(Type, #typeinfo{line = FileLine}, AccSt) ->
case loc(FileLine) of
{FirstFile, _} ->
case gb_sets:is_member(Type, UsedTypes) of
@@ -2801,10 +2796,7 @@ check_unused_types(Forms, #lint{usage=Usage, types=Ts, exp_types=ExpTs}=St) ->
check_local_opaque_types(St) ->
#lint{types=Ts, exp_types=ExpTs} = St,
FoldFun =
- fun(_Type, -1, AccSt) ->
- %% Default type
- AccSt;
- (_Type, #typeinfo{attr = type}, AccSt) ->
+ fun(_Type, #typeinfo{attr = type}, AccSt) ->
AccSt;
(Type, #typeinfo{attr = opaque, line = FileLine}, AccSt) ->
case gb_sets:is_element(Type, ExpTs) of