| /* |
| * Copyright (C) 2017 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. |
| */ |
| |
| #ifndef AAPT_LINKER_XMLCOMPATVERSIONER_H |
| #define AAPT_LINKER_XMLCOMPATVERSIONER_H |
| |
| #include <set> |
| #include <unordered_map> |
| #include <vector> |
| |
| #include "android-base/macros.h" |
| |
| #include "Resource.h" |
| #include "SdkConstants.h" |
| #include "process/IResourceTableConsumer.h" |
| #include "util/Util.h" |
| #include "xml/XmlDom.h" |
| |
| namespace aapt { |
| |
| class IDegradeRule; |
| |
| struct DegradeResult { |
| xml::Attribute attr; |
| ApiVersion attr_api_version; |
| }; |
| |
| class IDegradeRule { |
| public: |
| IDegradeRule() = default; |
| virtual ~IDegradeRule() = default; |
| |
| virtual std::vector<DegradeResult> Degrade(const xml::Element& src_el, |
| const xml::Attribute& src_attr, |
| StringPool* out_string_pool) const = 0; |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(IDegradeRule); |
| }; |
| |
| class XmlCompatVersioner { |
| public: |
| using Rules = std::unordered_map<ResourceId, std::unique_ptr<IDegradeRule>>; |
| |
| explicit XmlCompatVersioner(const Rules* rules); |
| |
| std::vector<std::unique_ptr<xml::XmlResource>> Process(IAaptContext* context, |
| xml::XmlResource* doc, |
| util::Range<ApiVersion> api_range); |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(XmlCompatVersioner); |
| |
| std::unique_ptr<xml::XmlResource> ProcessDoc(ApiVersion target_api, ApiVersion max_api, |
| xml::XmlResource* doc, |
| std::set<ApiVersion>* out_apis_referenced); |
| void ProcessRule(const xml::Element& src_el, const xml::Attribute& src_attr, |
| const ApiVersion& src_attr_version, const IDegradeRule* rule, |
| const util::Range<ApiVersion>& api_range, bool generated, xml::Element* dst_el, |
| std::set<ApiVersion>* out_apis_referenced, StringPool* out_string_pool); |
| |
| const Rules* rules_; |
| }; |
| |
| struct ReplacementAttr { |
| std::string name; |
| ResourceId id; |
| Attribute attr; |
| }; |
| |
| class DegradeToManyRule : public IDegradeRule { |
| public: |
| explicit DegradeToManyRule(std::vector<ReplacementAttr> attrs); |
| virtual ~DegradeToManyRule() = default; |
| |
| std::vector<DegradeResult> Degrade(const xml::Element& src_el, const xml::Attribute& src_attr, |
| StringPool* out_string_pool) const override; |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(DegradeToManyRule); |
| |
| std::vector<ReplacementAttr> attrs_; |
| }; |
| |
| } // namespace aapt |
| |
| #endif // AAPT_LINKER_XMLCOMPATVERSIONER_H |