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-rw-r--r--tools/aapt2/JavaClassGenerator.cpp208
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diff --git a/tools/aapt2/JavaClassGenerator.cpp b/tools/aapt2/JavaClassGenerator.cpp
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--- a/tools/aapt2/JavaClassGenerator.cpp
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-/*
- * Copyright (C) 2015 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.
- */
-
-#include "JavaClassGenerator.h"
-#include "NameMangler.h"
-#include "Resource.h"
-#include "ResourceTable.h"
-#include "ResourceValues.h"
-#include "StringPiece.h"
-
-#include <algorithm>
-#include <ostream>
-#include <set>
-#include <sstream>
-#include <tuple>
-
-namespace aapt {
-
-// The number of attributes to emit per line in a Styleable array.
-constexpr size_t kAttribsPerLine = 4;
-
-JavaClassGenerator::JavaClassGenerator(const std::shared_ptr<const ResourceTable>& table,
- Options options) :
- mTable(table), mOptions(options) {
-}
-
-static void generateHeader(std::ostream& out, const StringPiece16& package) {
- out << "/* AUTO-GENERATED FILE. DO NOT MODIFY.\n"
- " *\n"
- " * This class was automatically generated by the\n"
- " * aapt tool from the resource data it found. It\n"
- " * should not be modified by hand.\n"
- " */\n\n";
- out << "package " << package << ";"
- << std::endl
- << std::endl;
-}
-
-static const std::set<StringPiece16> sJavaIdentifiers = {
- u"abstract", u"assert", u"boolean", u"break", u"byte",
- u"case", u"catch", u"char", u"class", u"const", u"continue",
- u"default", u"do", u"double", u"else", u"enum", u"extends",
- u"final", u"finally", u"float", u"for", u"goto", u"if",
- u"implements", u"import", u"instanceof", u"int", u"interface",
- u"long", u"native", u"new", u"package", u"private", u"protected",
- u"public", u"return", u"short", u"static", u"strictfp", u"super",
- u"switch", u"synchronized", u"this", u"throw", u"throws",
- u"transient", u"try", u"void", u"volatile", u"while", u"true",
- u"false", u"null"
-};
-
-static bool isValidSymbol(const StringPiece16& symbol) {
- return sJavaIdentifiers.find(symbol) == sJavaIdentifiers.end();
-}
-
-/*
- * Java symbols can not contain . or -, but those are valid in a resource name.
- * Replace those with '_'.
- */
-static std::u16string transform(const StringPiece16& symbol) {
- std::u16string output = symbol.toString();
- for (char16_t& c : output) {
- if (c == u'.' || c == u'-') {
- c = u'_';
- }
- }
- return output;
-}
-
-struct GenArgs : ValueVisitorArgs {
- GenArgs(std::ostream* o, const std::u16string* p, std::u16string* e) :
- out(o), package(p), entryName(e) {
- }
-
- std::ostream* out;
- const std::u16string* package;
- std::u16string* entryName;
-};
-
-void JavaClassGenerator::visit(const Styleable& styleable, ValueVisitorArgs& a) {
- const StringPiece finalModifier = mOptions.useFinal ? " final" : "";
- std::ostream* out = static_cast<GenArgs&>(a).out;
- const std::u16string* package = static_cast<GenArgs&>(a).package;
- std::u16string* entryName = static_cast<GenArgs&>(a).entryName;
-
- // This must be sorted by resource ID.
- std::vector<std::pair<ResourceId, ResourceNameRef>> sortedAttributes;
- sortedAttributes.reserve(styleable.entries.size());
- for (const auto& attr : styleable.entries) {
- // If we are not encoding final attributes, the styleable entry may have no ID
- // if we are building a static library.
- assert((!mOptions.useFinal || attr.id.isValid()) && "no ID set for Styleable entry");
- assert(attr.name.isValid() && "no name set for Styleable entry");
- sortedAttributes.emplace_back(attr.id, attr.name);
- }
- std::sort(sortedAttributes.begin(), sortedAttributes.end());
-
- // First we emit the array containing the IDs of each attribute.
- *out << " "
- << "public static final int[] " << transform(*entryName) << " = {";
-
- const size_t attrCount = sortedAttributes.size();
- for (size_t i = 0; i < attrCount; i++) {
- if (i % kAttribsPerLine == 0) {
- *out << std::endl << " ";
- }
-
- *out << sortedAttributes[i].first;
- if (i != attrCount - 1) {
- *out << ", ";
- }
- }
- *out << std::endl << " };" << std::endl;
-
- // Now we emit the indices into the array.
- for (size_t i = 0; i < attrCount; i++) {
- *out << " "
- << "public static" << finalModifier
- << " int " << transform(*entryName);
-
- // We may reference IDs from other packages, so prefix the entry name with
- // the package.
- const ResourceNameRef& itemName = sortedAttributes[i].second;
- if (itemName.package != *package) {
- *out << "_" << transform(itemName.package);
- }
- *out << "_" << transform(itemName.entry) << " = " << i << ";" << std::endl;
- }
-}
-
-bool JavaClassGenerator::generateType(const std::u16string& package, size_t packageId,
- const ResourceTableType& type, std::ostream& out) {
- const StringPiece finalModifier = mOptions.useFinal ? " final" : "";
-
- std::u16string unmangledPackage;
- std::u16string unmangledName;
- for (const auto& entry : type.entries) {
- ResourceId id = { packageId, type.typeId, entry->entryId };
- assert(id.isValid());
-
- unmangledName = entry->name;
- if (NameMangler::unmangle(&unmangledName, &unmangledPackage)) {
- // The entry name was mangled, and we successfully unmangled it.
- // Check that we want to emit this symbol.
- if (package != unmangledPackage) {
- // Skip the entry if it doesn't belong to the package we're writing.
- continue;
- }
- } else {
- if (package != mTable->getPackage()) {
- // We are processing a mangled package name,
- // but this is a non-mangled resource.
- continue;
- }
- }
-
- if (!isValidSymbol(unmangledName)) {
- ResourceNameRef resourceName = { package, type.type, unmangledName };
- std::stringstream err;
- err << "invalid symbol name '" << resourceName << "'";
- mError = err.str();
- return false;
- }
-
- if (type.type == ResourceType::kStyleable) {
- assert(!entry->values.empty());
- entry->values.front().value->accept(*this, GenArgs{ &out, &package, &unmangledName });
- } else {
- out << " " << "public static" << finalModifier
- << " int " << transform(unmangledName) << " = " << id << ";" << std::endl;
- }
- }
- return true;
-}
-
-bool JavaClassGenerator::generate(const std::u16string& package, std::ostream& out) {
- const size_t packageId = mTable->getPackageId();
-
- generateHeader(out, package);
-
- out << "public final class R {" << std::endl;
-
- for (const auto& type : *mTable) {
- out << " public static final class " << type->type << " {" << std::endl;
- if (!generateType(package, packageId, *type, out)) {
- return false;
- }
- out << " }" << std::endl;
- }
-
- out << "}" << std::endl;
- return true;
-}
-
-} // namespace aapt