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/*
* 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
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