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-rw-r--r--lib/stdlib/src/dict.erl99
1 files changed, 80 insertions, 19 deletions
diff --git a/lib/stdlib/src/dict.erl b/lib/stdlib/src/dict.erl
index 7e51141098..2e9eba4bfa 100644
--- a/lib/stdlib/src/dict.erl
+++ b/lib/stdlib/src/dict.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2000-2009. All Rights Reserved.
+%% Copyright Ericsson AB 2000-2011. 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
@@ -80,7 +80,9 @@ new() ->
Empty = mk_seg(?seg_size),
#dict{empty=Empty,segs={Empty}}.
--spec is_key(term(), dict()) -> boolean().
+-spec is_key(Key, Dict) -> boolean() when
+ Key :: term(),
+ Dict :: dict().
is_key(Key, D) ->
Slot = get_slot(D, Key),
@@ -91,21 +93,29 @@ find_key(K, [?kv(K,_Val)|_]) -> true;
find_key(K, [_|Bkt]) -> find_key(K, Bkt);
find_key(_, []) -> false.
--spec to_list(dict()) -> [{term(), term()}].
+-spec to_list(Dict) -> List when
+ Dict :: dict(),
+ List :: [{Key :: term(), Value :: term()}].
to_list(D) ->
fold(fun (Key, Val, List) -> [{Key,Val}|List] end, [], D).
--spec from_list([{term(), term()}]) -> dict().
+-spec from_list(List) -> Dict when
+ List :: [{Key :: term(), Value :: term()}],
+ Dict :: dict().
from_list(L) ->
lists:foldl(fun ({K,V}, D) -> store(K, V, D) end, new(), L).
--spec size(dict()) -> non_neg_integer().
+-spec size(Dict) -> non_neg_integer() when
+ Dict :: dict().
size(#dict{size=N}) when is_integer(N), N >= 0 -> N.
--spec fetch(term(), dict()) -> term().
+-spec fetch(Key, Dict) -> Value when
+ Key :: term(),
+ Dict :: dict(),
+ Value :: term().
fetch(Key, D) ->
Slot = get_slot(D, Key),
@@ -119,7 +129,10 @@ fetch_val(K, [?kv(K,Val)|_]) -> Val;
fetch_val(K, [_|Bkt]) -> fetch_val(K, Bkt);
fetch_val(_, []) -> throw(badarg).
--spec find(term(), dict()) -> {'ok', term()} | 'error'.
+-spec find(Key, Dict) -> {'ok', Value} | 'error' when
+ Key :: term(),
+ Dict :: dict(),
+ Value :: term().
find(Key, D) ->
Slot = get_slot(D, Key),
@@ -130,12 +143,17 @@ find_val(K, [?kv(K,Val)|_]) -> {ok,Val};
find_val(K, [_|Bkt]) -> find_val(K, Bkt);
find_val(_, []) -> error.
--spec fetch_keys(dict()) -> [term()].
+-spec fetch_keys(Dict) -> Keys when
+ Dict :: dict(),
+ Keys :: [term()].
fetch_keys(D) ->
fold(fun (Key, _Val, Keys) -> [Key|Keys] end, [], D).
--spec erase(term(), dict()) -> dict().
+-spec erase(Key, Dict1) -> Dict2 when
+ Key :: term(),
+ Dict1 :: dict(),
+ Dict2 :: dict().
%% Erase all elements with key Key.
erase(Key, D0) ->
@@ -150,7 +168,11 @@ erase_key(Key, [E|Bkt0]) ->
{[E|Bkt1],Dc};
erase_key(_, []) -> {[],0}.
--spec store(term(), term(), dict()) -> dict().
+-spec store(Key, Value, Dict1) -> Dict2 when
+ Key :: term(),
+ Value :: term(),
+ Dict1 :: dict(),
+ Dict2 :: dict().
store(Key, Val, D0) ->
Slot = get_slot(D0, Key),
@@ -166,7 +188,11 @@ store_bkt_val(Key, New, [Other|Bkt0]) ->
{[Other|Bkt1],Ic};
store_bkt_val(Key, New, []) -> {[?kv(Key,New)],1}.
--spec append(term(), term(), dict()) -> dict().
+-spec append(Key, Value, Dict1) -> Dict2 when
+ Key :: term(),
+ Value :: term(),
+ Dict1 :: dict(),
+ Dict2 :: dict().
append(Key, Val, D0) ->
Slot = get_slot(D0, Key),
@@ -182,7 +208,11 @@ append_bkt(Key, Val, [Other|Bkt0]) ->
{[Other|Bkt1],Ic};
append_bkt(Key, Val, []) -> {[?kv(Key,[Val])],1}.
--spec append_list(term(), [term()], dict()) -> dict().
+-spec append_list(Key, ValList, Dict1) -> Dict2 when
+ Key :: term(),
+ ValList :: [Value :: term()],
+ Dict1 :: dict(),
+ Dict2 :: dict().
append_list(Key, L, D0) ->
Slot = get_slot(D0, Key),
@@ -252,7 +282,11 @@ app_list_bkt(Key, L, []) -> {[?kv(Key,L)],1}.
%% {Bkt1,Dc} = on_key_bkt(Key, F, Bkt0),
%% {[Other|Bkt1],Dc}.
--spec update(term(), fun((term()) -> term()), dict()) -> dict().
+-spec update(Key, Fun, Dict1) -> Dict2 when
+ Key :: term(),
+ Fun :: fun((Value1 :: term()) -> Value2 :: term()),
+ Dict1 :: dict(),
+ Dict2 :: dict().
update(Key, F, D0) ->
Slot = get_slot(D0, Key),
@@ -271,7 +305,12 @@ update_bkt(Key, F, [Other|Bkt0]) ->
update_bkt(_Key, _F, []) ->
throw(badarg).
--spec update(term(), fun((term()) -> term()), term(), dict()) -> dict().
+-spec update(Key, Fun, Initial, Dict1) -> Dict2 when
+ Key :: term(),
+ Initial :: term(),
+ Fun :: fun((Value1 :: term()) -> Value2 :: term()),
+ Dict1 :: dict(),
+ Dict2 :: dict().
update(Key, F, Init, D0) ->
Slot = get_slot(D0, Key),
@@ -286,7 +325,11 @@ update_bkt(Key, F, I, [Other|Bkt0]) ->
{[Other|Bkt1],Ic};
update_bkt(Key, F, I, []) when is_function(F, 1) -> {[?kv(Key,I)],1}.
--spec update_counter(term(), number(), dict()) -> dict().
+-spec update_counter(Key, Increment, Dict1) -> Dict2 when
+ Key :: term(),
+ Increment :: number(),
+ Dict1 :: dict(),
+ Dict2 :: dict().
update_counter(Key, Incr, D0) when is_number(Incr) ->
Slot = get_slot(D0, Key),
@@ -301,20 +344,38 @@ counter_bkt(Key, I, [Other|Bkt0]) ->
{[Other|Bkt1],Ic};
counter_bkt(Key, I, []) -> {[?kv(Key,I)],1}.
--spec fold(fun((term(), term(), term()) -> term()), term(), dict()) -> term().
+-spec fold(Fun, Acc0, Dict) -> Acc1 when
+ Fun :: fun((Key, Value, AccIn) -> AccOut),
+ Key :: term(),
+ Value :: term(),
+ Acc0 :: term(),
+ Acc1 :: term(),
+ AccIn :: term(),
+ AccOut :: term(),
+ Dict :: dict().
%% Fold function Fun over all "bags" in Table and return Accumulator.
fold(F, Acc, D) -> fold_dict(F, Acc, D).
--spec map(fun((term(), term()) -> term()), dict()) -> dict().
+-spec map(Fun, Dict1) -> Dict2 when
+ Fun :: fun((Key :: term(), Value1 :: term()) -> Value2 :: term()),
+ Dict1 :: dict(),
+ Dict2 :: dict().
map(F, D) -> map_dict(F, D).
--spec filter(fun((term(), term()) -> boolean()), dict()) -> dict().
+-spec filter(Pred, Dict1) -> Dict2 when
+ Pred :: fun((Key :: term(), Value :: term()) -> boolean()),
+ Dict1 :: dict(),
+ Dict2 :: dict().
filter(F, D) -> filter_dict(F, D).
--spec merge(fun((term(), term(), term()) -> term()), dict(), dict()) -> dict().
+-spec merge(Fun, Dict1, Dict2) -> Dict3 when
+ Fun :: fun((Key :: term(), Value1 :: term(), Value2 :: term()) -> Value :: term()),
+ Dict1 :: dict(),
+ Dict2 :: dict(),
+ Dict3 :: dict().
merge(F, D1, D2) when D1#dict.size < D2#dict.size ->
fold_dict(fun (K, V1, D) ->
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-01 05:01:16 +0000