e4bb9eb5af
This allows us to preserve the various product definitions during the compile phase, and allows us to select the product in the link phase. This allows compiled files to remain product-independent, so that they do not need to be recompiled when switching targets. Bug:25958912 Change-Id: Iaa7eed25c834b67a39cdc9be43613e8b5ab6cdd7
140 lines
6.1 KiB
C++
140 lines
6.1 KiB
C++
/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "ConfigDescription.h"
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#include "ResourceTable.h"
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#include "SdkConstants.h"
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#include "ValueVisitor.h"
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#include "link/Linkers.h"
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#include <algorithm>
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#include <cassert>
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namespace aapt {
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bool shouldGenerateVersionedResource(const ResourceEntry* entry, const ConfigDescription& config,
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const int sdkVersionToGenerate) {
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assert(sdkVersionToGenerate > config.sdkVersion);
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const auto endIter = entry->values.end();
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auto iter = entry->values.begin();
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for (; iter != endIter; ++iter) {
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if ((*iter)->config == config) {
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break;
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}
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}
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// The source config came from this list, so it should be here.
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assert(iter != entry->values.end());
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++iter;
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// The next configuration either only varies in sdkVersion, or it is completely different
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// and therefore incompatible. If it is incompatible, we must generate the versioned resource.
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// NOTE: The ordering of configurations takes sdkVersion as higher precedence than other
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// qualifiers, so we need to iterate through the entire list to be sure there
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// are no higher sdk level versions of this resource.
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ConfigDescription tempConfig(config);
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for (; iter != endIter; ++iter) {
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tempConfig.sdkVersion = (*iter)->config.sdkVersion;
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if (tempConfig == (*iter)->config) {
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// The two configs are the same, check the sdk version.
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return sdkVersionToGenerate < (*iter)->config.sdkVersion;
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}
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}
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// No match was found, so we should generate the versioned resource.
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return true;
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}
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bool AutoVersioner::consume(IAaptContext* context, ResourceTable* table) {
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for (auto& package : table->packages) {
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for (auto& type : package->types) {
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if (type->type != ResourceType::kStyle) {
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continue;
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}
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for (auto& entry : type->entries) {
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for (size_t i = 0; i < entry->values.size(); i++) {
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ResourceConfigValue* configValue = entry->values[i].get();
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if (configValue->config.sdkVersion >= SDK_LOLLIPOP_MR1) {
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// If this configuration is only used on L-MR1 then we don't need
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// to do anything since we use private attributes since that version.
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continue;
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}
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if (Style* style = valueCast<Style>(configValue->value.get())) {
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Maybe<size_t> minSdkStripped;
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std::vector<Style::Entry> stripped;
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auto iter = style->entries.begin();
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while (iter != style->entries.end()) {
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assert(iter->key.id && "IDs must be assigned and linked");
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// Find the SDK level that is higher than the configuration allows.
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const size_t sdkLevel = findAttributeSdkLevel(iter->key.id.value());
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if (sdkLevel > std::max<size_t>(configValue->config.sdkVersion, 1)) {
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// Record that we are about to strip this.
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stripped.emplace_back(std::move(*iter));
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// We use the smallest SDK level to generate the new style.
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if (minSdkStripped) {
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minSdkStripped = std::min(minSdkStripped.value(), sdkLevel);
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} else {
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minSdkStripped = sdkLevel;
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}
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// Erase this from this style.
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iter = style->entries.erase(iter);
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continue;
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}
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++iter;
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}
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if (minSdkStripped && !stripped.empty()) {
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// We found attributes from a higher SDK level. Check that
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// there is no other defined resource for the version we want to
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// generate.
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if (shouldGenerateVersionedResource(entry.get(),
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configValue->config,
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minSdkStripped.value())) {
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// Let's create a new Style for this versioned resource.
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ConfigDescription newConfig(configValue->config);
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newConfig.sdkVersion = minSdkStripped.value();
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std::unique_ptr<Style> newStyle(style->clone(&table->stringPool));
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newStyle->setComment(style->getComment());
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newStyle->setSource(style->getSource());
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// Move the previously stripped attributes into this style.
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newStyle->entries.insert(newStyle->entries.end(),
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std::make_move_iterator(stripped.begin()),
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std::make_move_iterator(stripped.end()));
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// Insert the new Resource into the correct place.
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entry->findOrCreateValue(newConfig, {})->value =
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std::move(newStyle);
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}
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}
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}
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}
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}
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}
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}
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return true;
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}
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} // namespace aapt
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