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155 lines
5.3 KiB
155 lines
5.3 KiB
/*
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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 "link/Linkers.h"
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#include "androidfw/ResourceTypes.h"
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#include "Diagnostics.h"
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#include "ResourceUtils.h"
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#include "SdkConstants.h"
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#include "ValueVisitor.h"
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#include "link/ReferenceLinker.h"
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#include "process/IResourceTableConsumer.h"
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#include "process/SymbolTable.h"
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#include "trace/TraceBuffer.h"
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#include "util/Util.h"
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#include "xml/XmlDom.h"
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namespace aapt {
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namespace {
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// Visits each xml Element and compiles the attributes within.
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class XmlVisitor : public xml::PackageAwareVisitor {
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public:
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using xml::PackageAwareVisitor::Visit;
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XmlVisitor(const Source& source, StringPool* pool, const CallSite& callsite,
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IAaptContext* context, ResourceTable* table, SymbolTable* symbols)
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: source_(source),
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callsite_(callsite),
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context_(context),
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symbols_(symbols),
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reference_transformer_(callsite, context, symbols, pool, table, this) {
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}
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void Visit(xml::Element* el) override {
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// The default Attribute allows everything except enums or flags.
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Attribute default_attribute(android::ResTable_map::TYPE_ANY);
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default_attribute.SetWeak(true);
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// The default orientation of gradients in android Q is different than previous android
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// versions. Set the android:angle attribute to "0" to ensure that the default gradient
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// orientation will remain left-to-right in android Q.
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if (el->name == "gradient" && context_->GetMinSdkVersion() <= SDK_Q) {
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if (!el->FindAttribute(xml::kSchemaAndroid, "angle")) {
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el->attributes.push_back(xml::Attribute{xml::kSchemaAndroid, "angle", "0"});
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}
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}
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const Source source = source_.WithLine(el->line_number);
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for (xml::Attribute& attr : el->attributes) {
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// If the attribute has no namespace, interpret values as if
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// they were assigned to the default Attribute.
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const Attribute* attribute = &default_attribute;
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if (Maybe<xml::ExtractedPackage> maybe_package =
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xml::ExtractPackageFromNamespace(attr.namespace_uri)) {
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// There is a valid package name for this attribute. We will look this up.
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Reference attr_ref(
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ResourceNameRef(maybe_package.value().package, ResourceType::kAttr, attr.name));
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attr_ref.private_reference = maybe_package.value().private_namespace;
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std::string err_str;
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attr.compiled_attribute =
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ReferenceLinker::CompileXmlAttribute(attr_ref, callsite_, context_, symbols_, &err_str);
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if (!attr.compiled_attribute) {
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DiagMessage error_msg(source);
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error_msg << "attribute ";
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ReferenceLinker::WriteAttributeName(attr_ref, callsite_, this, &error_msg);
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error_msg << " " << err_str;
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context_->GetDiagnostics()->Error(error_msg);
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error_ = true;
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continue;
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}
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attribute = &attr.compiled_attribute.value().attribute;
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}
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attr.compiled_value = ResourceUtils::TryParseItemForAttribute(attr.value, attribute);
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if (attr.compiled_value) {
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// With a compiledValue, we must resolve the reference and assign it an ID.
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attr.compiled_value->SetSource(source);
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attr.compiled_value = attr.compiled_value->Transform(reference_transformer_);
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} else if ((attribute->type_mask & android::ResTable_map::TYPE_STRING) == 0) {
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// We won't be able to encode this as a string.
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DiagMessage msg(source);
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msg << "'" << attr.value << "' is incompatible with attribute " << attr.name << " "
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<< *attribute;
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context_->GetDiagnostics()->Error(msg);
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error_ = true;
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}
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}
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// Call the super implementation.
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xml::PackageAwareVisitor::Visit(el);
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}
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bool HasError() {
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return error_ || reference_transformer_.HasError();
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}
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private:
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DISALLOW_COPY_AND_ASSIGN(XmlVisitor);
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Source source_;
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const CallSite& callsite_;
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IAaptContext* context_;
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SymbolTable* symbols_;
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ReferenceLinkerTransformer reference_transformer_;
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bool error_ = false;
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};
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} // namespace
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bool XmlReferenceLinker::Consume(IAaptContext* context, xml::XmlResource* resource) {
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TRACE_NAME("XmlReferenceLinker::Consume");
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CallSite callsite{resource->file.name.package};
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std::string out_name = resource->file.name.entry;
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NameMangler::Unmangle(&out_name, &callsite.package);
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if (callsite.package.empty()) {
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// Assume an empty package means that the XML file is local. This is true of AndroidManifest.xml
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// for example.
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callsite.package = context->GetCompilationPackage();
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}
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XmlVisitor visitor(resource->file.source, &resource->string_pool, callsite, context, table_,
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context->GetExternalSymbols());
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if (resource->root) {
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resource->root->Accept(&visitor);
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return !visitor.HasError();
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}
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return false;
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}
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} // namespace aapt
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