1/*
2 * Copyright (C) 2016 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#ifndef AAPT_FILTER_CONFIGFILTER_H
18#define AAPT_FILTER_CONFIGFILTER_H
19
20#include <set>
21#include <utility>
22
23#include "ConfigDescription.h"
24
25namespace aapt {
26
27/**
28 * Matches ConfigDescriptions based on some pattern.
29 */
30class IConfigFilter {
31 public:
32  virtual ~IConfigFilter() = default;
33
34  /**
35   * Returns true if the filter matches the configuration, false otherwise.
36   */
37  virtual bool Match(const ConfigDescription& config) const = 0;
38};
39
40/**
41 * Implements config axis matching. An axis is one component of a configuration, like screen density
42 * or locale. If an axis is specified in the filter, and the axis is specified in the configuration
43 * to match, they must be compatible. Otherwise the configuration to match is accepted.
44 *
45 * Used when handling "-c" options.
46 */
47class AxisConfigFilter : public IConfigFilter {
48 public:
49  void AddConfig(ConfigDescription config);
50
51  bool Match(const ConfigDescription& config) const override;
52
53 private:
54  std::set<std::pair<ConfigDescription, uint32_t>> configs_;
55  uint32_t config_mask_ = 0;
56};
57
58}  // namespace aapt
59
60#endif /* AAPT_FILTER_CONFIGFILTER_H */
61