1/*
2 * Copyright (C) 2014 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// Definitions internal to Minikin
17
18#define LOG_TAG "Minikin"
19
20#include <log/log.h>
21
22#include "MinikinInternal.h"
23
24namespace minikin {
25
26inline static bool isBMPVariationSelector(uint32_t codePoint) {
27    return VS1 <= codePoint && codePoint <= VS16;
28}
29
30inline static bool isVariationSelectorSupplement(uint32_t codePoint) {
31    return VS17 <= codePoint && codePoint <= VS256;
32}
33
34uint16_t getVsIndex(uint32_t codePoint) {
35    if (isBMPVariationSelector(codePoint)) {
36        return codePoint - VS1;
37    } else if (isVariationSelectorSupplement(codePoint)) {
38        return codePoint - VS17 + 16;
39    } else {
40        return INVALID_VS_INDEX;
41    }
42}
43
44bool isVariationSelector(uint32_t codePoint) {
45    return isBMPVariationSelector(codePoint) || isVariationSelectorSupplement(codePoint);
46}
47
48}  // namespace minikin
49