AAPT2: Rename to match new style

Use Google3 naming style to match new
projects' and open source google projects' style.

Preferred to do this in a massive CL so as to avoid
style inconsistencies that plague legacy code bases.
This is a relatively NEW code base, may as well keep
it up to date.

Test: name/style refactor - existing tests pass
Change-Id: Ie80ecb78d46ec53efdfca2336bb57d96cbb7fb87
diff --git a/tools/aapt2/link/ReferenceLinker.cpp b/tools/aapt2/link/ReferenceLinker.cpp
index 7fe0956..be787b2 100644
--- a/tools/aapt2/link/ReferenceLinker.cpp
+++ b/tools/aapt2/link/ReferenceLinker.cpp
@@ -14,7 +14,11 @@
  * limitations under the License.
  */
 
-#include "ReferenceLinker.h"
+#include "link/ReferenceLinker.h"
+
+#include "android-base/logging.h"
+#include "androidfw/ResourceTypes.h"
+
 #include "Diagnostics.h"
 #include "ResourceTable.h"
 #include "ResourceUtils.h"
@@ -26,9 +30,6 @@
 #include "util/Util.h"
 #include "xml/XmlUtil.h"
 
-#include <androidfw/ResourceTypes.h>
-#include <cassert>
-
 namespace aapt {
 
 namespace {
@@ -46,21 +47,21 @@
  */
 class ReferenceLinkerVisitor : public ValueVisitor {
  public:
-  using ValueVisitor::visit;
+  using ValueVisitor::Visit;
 
   ReferenceLinkerVisitor(IAaptContext* context, SymbolTable* symbols,
-                         StringPool* stringPool, xml::IPackageDeclStack* decl,
-                         CallSite* callSite)
-      : mContext(context),
-        mSymbols(symbols),
-        mPackageDecls(decl),
-        mStringPool(stringPool),
-        mCallSite(callSite) {}
+                         StringPool* string_pool, xml::IPackageDeclStack* decl,
+                         CallSite* callsite)
+      : context_(context),
+        symbols_(symbols),
+        package_decls_(decl),
+        string_pool_(string_pool),
+        callsite_(callsite) {}
 
-  void visit(Reference* ref) override {
-    if (!ReferenceLinker::linkReference(ref, mContext, mSymbols, mPackageDecls,
-                                        mCallSite)) {
-      mError = true;
+  void Visit(Reference* ref) override {
+    if (!ReferenceLinker::LinkReference(ref, context_, symbols_, package_decls_,
+                                        callsite_)) {
+      error_ = true;
     }
   }
 
@@ -72,13 +73,13 @@
    * lookup the attributes to find out which types are allowed for the
    * attributes' values.
    */
-  void visit(Style* style) override {
+  void Visit(Style* style) override {
     if (style->parent) {
-      visit(&style->parent.value());
+      Visit(&style->parent.value());
     }
 
     for (Style::Entry& entry : style->entries) {
-      std::string errStr;
+      std::string err_str;
 
       // Transform the attribute reference so that it is using the fully
       // qualified package
@@ -86,17 +87,17 @@
       // resources if
       // there was a '*' in the reference or if the package came from the
       // private namespace.
-      Reference transformedReference = entry.key;
-      transformReferenceFromNamespace(mPackageDecls,
-                                      mContext->getCompilationPackage(),
-                                      &transformedReference);
+      Reference transformed_reference = entry.key;
+      TransformReferenceFromNamespace(package_decls_,
+                                      context_->GetCompilationPackage(),
+                                      &transformed_reference);
 
       // Find the attribute in the symbol table and check if it is visible from
       // this callsite.
       const SymbolTable::Symbol* symbol =
-          ReferenceLinker::resolveAttributeCheckVisibility(
-              transformedReference, mContext->getNameMangler(), mSymbols,
-              mCallSite, &errStr);
+          ReferenceLinker::ResolveAttributeCheckVisibility(
+              transformed_reference, context_->GetNameMangler(), symbols_,
+              callsite_, &err_str);
       if (symbol) {
         // Assign our style key the correct ID.
         // The ID may not exist.
@@ -104,11 +105,11 @@
 
         // Try to convert the value to a more specific, typed value based on the
         // attribute it is set to.
-        entry.value = parseValueWithAttribute(std::move(entry.value),
+        entry.value = ParseValueWithAttribute(std::move(entry.value),
                                               symbol->attribute.get());
 
         // Link/resolve the final value (mostly if it's a reference).
-        entry.value->accept(this);
+        entry.value->Accept(this);
 
         // Now verify that the type of this item is compatible with the
         // attribute it
@@ -116,39 +117,34 @@
         // check is
         // fast and we avoid creating a DiagMessage when the match is
         // successful.
-        if (!symbol->attribute->matches(entry.value.get(), nullptr)) {
+        if (!symbol->attribute->Matches(entry.value.get(), nullptr)) {
           // The actual type of this item is incompatible with the attribute.
-          DiagMessage msg(entry.key.getSource());
+          DiagMessage msg(entry.key.GetSource());
 
           // Call the matches method again, this time with a DiagMessage so we
           // fill
           // in the actual error message.
-          symbol->attribute->matches(entry.value.get(), &msg);
-          mContext->getDiagnostics()->error(msg);
-          mError = true;
+          symbol->attribute->Matches(entry.value.get(), &msg);
+          context_->GetDiagnostics()->Error(msg);
+          error_ = true;
         }
 
       } else {
-        DiagMessage msg(entry.key.getSource());
+        DiagMessage msg(entry.key.GetSource());
         msg << "style attribute '";
-        ReferenceLinker::writeResourceName(&msg, entry.key,
-                                           transformedReference);
-        msg << "' " << errStr;
-        mContext->getDiagnostics()->error(msg);
-        mError = true;
+        ReferenceLinker::WriteResourceName(&msg, entry.key,
+                                           transformed_reference);
+        msg << "' " << err_str;
+        context_->GetDiagnostics()->Error(msg);
+        error_ = true;
       }
     }
   }
 
-  bool hasError() { return mError; }
+  bool HasError() { return error_; }
 
  private:
-  IAaptContext* mContext;
-  SymbolTable* mSymbols;
-  xml::IPackageDeclStack* mPackageDecls;
-  StringPool* mStringPool;
-  CallSite* mCallSite;
-  bool mError = false;
+  DISALLOW_COPY_AND_ASSIGN(ReferenceLinkerVisitor);
 
   /**
    * Transform a RawString value into a more specific, appropriate value, based
@@ -156,20 +152,20 @@
    * Attribute. If a non RawString value is passed in, this is an identity
    * transform.
    */
-  std::unique_ptr<Item> parseValueWithAttribute(std::unique_ptr<Item> value,
+  std::unique_ptr<Item> ParseValueWithAttribute(std::unique_ptr<Item> value,
                                                 const Attribute* attr) {
-    if (RawString* rawString = valueCast<RawString>(value.get())) {
+    if (RawString* raw_string = ValueCast<RawString>(value.get())) {
       std::unique_ptr<Item> transformed =
-          ResourceUtils::tryParseItemForAttribute(*rawString->value, attr);
+          ResourceUtils::TryParseItemForAttribute(*raw_string->value, attr);
 
       // If we could not parse as any specific type, try a basic STRING.
       if (!transformed &&
-          (attr->typeMask & android::ResTable_map::TYPE_STRING)) {
-        util::StringBuilder stringBuilder;
-        stringBuilder.append(*rawString->value);
-        if (stringBuilder) {
+          (attr->type_mask & android::ResTable_map::TYPE_STRING)) {
+        util::StringBuilder string_builder;
+        string_builder.Append(*raw_string->value);
+        if (string_builder) {
           transformed = util::make_unique<String>(
-              mStringPool->makeRef(stringBuilder.str()));
+              string_pool_->MakeRef(string_builder.ToString()));
         }
       }
 
@@ -179,6 +175,31 @@
     };
     return value;
   }
+
+  IAaptContext* context_;
+  SymbolTable* symbols_;
+  xml::IPackageDeclStack* package_decls_;
+  StringPool* string_pool_;
+  CallSite* callsite_;
+  bool error_ = false;
+};
+
+class EmptyDeclStack : public xml::IPackageDeclStack {
+ public:
+  EmptyDeclStack() = default;
+
+  Maybe<xml::ExtractedPackage> TransformPackageAlias(
+      const StringPiece& alias,
+      const StringPiece& local_package) const override {
+    if (alias.empty()) {
+      return xml::ExtractedPackage{local_package.ToString(),
+                                   true /* private */};
+    }
+    return {};
+  }
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(EmptyDeclStack);
 };
 
 }  // namespace
@@ -188,14 +209,14 @@
  * requesting private access
  * or if the callsite comes from the same package.
  */
-bool ReferenceLinker::isSymbolVisible(const SymbolTable::Symbol& symbol,
+bool ReferenceLinker::IsSymbolVisible(const SymbolTable::Symbol& symbol,
                                       const Reference& ref,
-                                      const CallSite& callSite) {
-  if (!symbol.isPublic && !ref.privateReference) {
+                                      const CallSite& callsite) {
+  if (!symbol.is_public && !ref.private_reference) {
     if (ref.name) {
-      return callSite.resource.package == ref.name.value().package;
+      return callsite.resource.package == ref.name.value().package;
     } else if (ref.id && symbol.id) {
-      return ref.id.value().packageId() == symbol.id.value().packageId();
+      return ref.id.value().package_id() == symbol.id.value().package_id();
     } else {
       return false;
     }
@@ -203,160 +224,144 @@
   return true;
 }
 
-const SymbolTable::Symbol* ReferenceLinker::resolveSymbol(
+const SymbolTable::Symbol* ReferenceLinker::ResolveSymbol(
     const Reference& reference, NameMangler* mangler, SymbolTable* symbols) {
   if (reference.name) {
-    Maybe<ResourceName> mangled = mangler->mangleName(reference.name.value());
-    return symbols->findByName(mangled ? mangled.value()
+    Maybe<ResourceName> mangled = mangler->MangleName(reference.name.value());
+    return symbols->FindByName(mangled ? mangled.value()
                                        : reference.name.value());
   } else if (reference.id) {
-    return symbols->findById(reference.id.value());
+    return symbols->FindById(reference.id.value());
   } else {
     return nullptr;
   }
 }
 
-const SymbolTable::Symbol* ReferenceLinker::resolveSymbolCheckVisibility(
-    const Reference& reference, NameMangler* nameMangler, SymbolTable* symbols,
-    CallSite* callSite, std::string* outError) {
+const SymbolTable::Symbol* ReferenceLinker::ResolveSymbolCheckVisibility(
+    const Reference& reference, NameMangler* name_mangler, SymbolTable* symbols,
+    CallSite* callsite, std::string* out_error) {
   const SymbolTable::Symbol* symbol =
-      resolveSymbol(reference, nameMangler, symbols);
+      ResolveSymbol(reference, name_mangler, symbols);
   if (!symbol) {
-    if (outError) *outError = "not found";
+    if (out_error) *out_error = "not found";
     return nullptr;
   }
 
-  if (!isSymbolVisible(*symbol, reference, *callSite)) {
-    if (outError) *outError = "is private";
+  if (!IsSymbolVisible(*symbol, reference, *callsite)) {
+    if (out_error) *out_error = "is private";
     return nullptr;
   }
   return symbol;
 }
 
-const SymbolTable::Symbol* ReferenceLinker::resolveAttributeCheckVisibility(
-    const Reference& reference, NameMangler* nameMangler, SymbolTable* symbols,
-    CallSite* callSite, std::string* outError) {
-  const SymbolTable::Symbol* symbol = resolveSymbolCheckVisibility(
-      reference, nameMangler, symbols, callSite, outError);
+const SymbolTable::Symbol* ReferenceLinker::ResolveAttributeCheckVisibility(
+    const Reference& reference, NameMangler* name_mangler, SymbolTable* symbols,
+    CallSite* callsite, std::string* out_error) {
+  const SymbolTable::Symbol* symbol = ResolveSymbolCheckVisibility(
+      reference, name_mangler, symbols, callsite, out_error);
   if (!symbol) {
     return nullptr;
   }
 
   if (!symbol->attribute) {
-    if (outError) *outError = "is not an attribute";
+    if (out_error) *out_error = "is not an attribute";
     return nullptr;
   }
   return symbol;
 }
 
-Maybe<xml::AaptAttribute> ReferenceLinker::compileXmlAttribute(
-    const Reference& reference, NameMangler* nameMangler, SymbolTable* symbols,
-    CallSite* callSite, std::string* outError) {
+Maybe<xml::AaptAttribute> ReferenceLinker::CompileXmlAttribute(
+    const Reference& reference, NameMangler* name_mangler, SymbolTable* symbols,
+    CallSite* callsite, std::string* out_error) {
   const SymbolTable::Symbol* symbol =
-      resolveSymbol(reference, nameMangler, symbols);
+      ResolveSymbol(reference, name_mangler, symbols);
   if (!symbol) {
-    if (outError) *outError = "not found";
+    if (out_error) *out_error = "not found";
     return {};
   }
 
   if (!symbol->attribute) {
-    if (outError) *outError = "is not an attribute";
+    if (out_error) *out_error = "is not an attribute";
     return {};
   }
   return xml::AaptAttribute{symbol->id, *symbol->attribute};
 }
 
-void ReferenceLinker::writeResourceName(DiagMessage* outMsg,
+void ReferenceLinker::WriteResourceName(DiagMessage* out_msg,
                                         const Reference& orig,
                                         const Reference& transformed) {
-  assert(outMsg);
+  CHECK(out_msg != nullptr);
 
   if (orig.name) {
-    *outMsg << orig.name.value();
+    *out_msg << orig.name.value();
     if (transformed.name.value() != orig.name.value()) {
-      *outMsg << " (aka " << transformed.name.value() << ")";
+      *out_msg << " (aka " << transformed.name.value() << ")";
     }
   } else {
-    *outMsg << orig.id.value();
+    *out_msg << orig.id.value();
   }
 }
 
-bool ReferenceLinker::linkReference(Reference* reference, IAaptContext* context,
+bool ReferenceLinker::LinkReference(Reference* reference, IAaptContext* context,
                                     SymbolTable* symbols,
                                     xml::IPackageDeclStack* decls,
-                                    CallSite* callSite) {
-  assert(reference);
-  assert(reference->name || reference->id);
+                                    CallSite* callsite) {
+  CHECK(reference != nullptr);
+  CHECK(reference->name || reference->id);
 
-  Reference transformedReference = *reference;
-  transformReferenceFromNamespace(decls, context->getCompilationPackage(),
-                                  &transformedReference);
+  Reference transformed_reference = *reference;
+  TransformReferenceFromNamespace(decls, context->GetCompilationPackage(),
+                                  &transformed_reference);
 
-  std::string errStr;
-  const SymbolTable::Symbol* s = resolveSymbolCheckVisibility(
-      transformedReference, context->getNameMangler(), symbols, callSite,
-      &errStr);
+  std::string err_str;
+  const SymbolTable::Symbol* s = ResolveSymbolCheckVisibility(
+      transformed_reference, context->GetNameMangler(), symbols, callsite,
+      &err_str);
   if (s) {
     // The ID may not exist. This is fine because of the possibility of building
-    // against
-    // libraries without assigned IDs.
+    // against libraries without assigned IDs.
     // Ex: Linking against own resources when building a static library.
     reference->id = s->id;
     return true;
   }
 
-  DiagMessage errorMsg(reference->getSource());
-  errorMsg << "resource ";
-  writeResourceName(&errorMsg, *reference, transformedReference);
-  errorMsg << " " << errStr;
-  context->getDiagnostics()->error(errorMsg);
+  DiagMessage error_msg(reference->GetSource());
+  error_msg << "resource ";
+  WriteResourceName(&error_msg, *reference, transformed_reference);
+  error_msg << " " << err_str;
+  context->GetDiagnostics()->Error(error_msg);
   return false;
 }
 
-namespace {
-
-struct EmptyDeclStack : public xml::IPackageDeclStack {
-  Maybe<xml::ExtractedPackage> transformPackageAlias(
-      const StringPiece& alias,
-      const StringPiece& localPackage) const override {
-    if (alias.empty()) {
-      return xml::ExtractedPackage{localPackage.toString(), true /* private */};
-    }
-    return {};
-  }
-};
-
-}  // namespace
-
-bool ReferenceLinker::consume(IAaptContext* context, ResourceTable* table) {
-  EmptyDeclStack declStack;
+bool ReferenceLinker::Consume(IAaptContext* context, ResourceTable* table) {
+  EmptyDeclStack decl_stack;
   bool error = false;
   for (auto& package : table->packages) {
     for (auto& type : package->types) {
       for (auto& entry : type->entries) {
         // Symbol state information may be lost if there is no value for the
         // resource.
-        if (entry->symbolStatus.state != SymbolState::kUndefined &&
+        if (entry->symbol_status.state != SymbolState::kUndefined &&
             entry->values.empty()) {
-          context->getDiagnostics()->error(
-              DiagMessage(entry->symbolStatus.source)
+          context->GetDiagnostics()->Error(
+              DiagMessage(entry->symbol_status.source)
               << "no definition for declared symbol '"
               << ResourceNameRef(package->name, type->type, entry->name)
               << "'");
           error = true;
         }
 
-        CallSite callSite = {
+        CallSite callsite = {
             ResourceNameRef(package->name, type->type, entry->name)};
-        ReferenceLinkerVisitor visitor(context, context->getExternalSymbols(),
-                                       &table->stringPool, &declStack,
-                                       &callSite);
+        ReferenceLinkerVisitor visitor(context, context->GetExternalSymbols(),
+                                       &table->string_pool, &decl_stack,
+                                       &callsite);
 
-        for (auto& configValue : entry->values) {
-          configValue->value->accept(&visitor);
+        for (auto& config_value : entry->values) {
+          config_value->value->Accept(&visitor);
         }
 
-        if (visitor.hasError()) {
+        if (visitor.HasError()) {
           error = true;
         }
       }