_site/cover/pgmp_binary.COVER.html

1 %% Copyright (c) 2022 Peter Morgan <peter.james.morgan@gmail.com>
2 %%
3 %% Licensed under the Apache License, Version 2.0 (the "License");
4 %% you may not use this file except in compliance with the License.
5 %% You may obtain a copy of the License at
6 %%
7 %% http://www.apache.org/licenses/LICENSE-2.0
8 %%
9 %% Unless required by applicable law or agreed to in writing, software
10 %% distributed under the License is distributed on an "AS IS" BASIS,
11 %% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 %% See the License for the specific language governing permissions and
13 %% limitations under the License.
14
15
16 -module(pgmp_binary).
17
18
19 -export([foldl/3]).
20 -export([repeat/4]).
21
22 -type mapping() :: fun((binary(), any()) -> {binary(), any()}).
23
24
25 -spec foldl(mapping(), any(), binary()) -> any().
26
27 foldl(_, A, <<>>) ->
28 77 A;
29
30 foldl(F, A0, Binary) ->
31 228 {Remainder, A1} = F(Binary, A0),
32 228 ?FUNCTION_NAME(F, A1, Remainder).
33
34
35 -spec repeat(non_neg_integer(), binary(), mapping(), any()) -> {binary(), any()}.
36
37 repeat(0, Data, _, A) ->
38 16 {Data, A};
39
40 repeat(N, Data, F, A0) ->
41 40 {Remainder, A1} = F(Data, A0),
42 40 ?FUNCTION_NAME(N - 1, Remainder, F, A1).
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