| /* |
| ** |
| ** Copyright 2016, The Android Open Source Project |
| ** |
| ** Licensed under the Apache License, Version 2.0 (the "License"); |
| ** you may not use this file except in compliance with the License. |
| ** You may obtain a copy of the License at |
| ** |
| ** http://www.apache.org/licenses/LICENSE-2.0 |
| ** |
| ** Unless required by applicable law or agreed to in writing, software |
| ** distributed under the License is distributed on an "AS IS" BASIS, |
| ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| ** See the License for the specific language governing permissions and |
| ** limitations under the License. |
| */ |
| |
| #include <keystore/keymaster_tags.h> |
| |
| namespace keystore { |
| |
| template<typename TagList> |
| struct TagStringifier; |
| |
| template<typename ... Tags> |
| struct TagStringifier<MetaList<Tags...>> { |
| template<TagType tag_type, Tag tag> |
| static TypedTag<tag_type, tag> chooseString(TypedTag<tag_type, tag> ttag, Tag runtime_tag, |
| const char** result) { |
| if (tag == runtime_tag) { |
| *result = Tag2String<tag>::value(); |
| } |
| return ttag; |
| } |
| static const char* stringify(Tag tag) { |
| const char* result = "unknown tag"; |
| [] (Tags&&...) {}(chooseString(Tags(), tag, &result)...); |
| return result; |
| } |
| }; |
| |
| const char* stringifyTag(Tag tag) { |
| return TagStringifier<all_tags_t>::stringify(tag); |
| } |
| |
| } |