| #include "AST.h" |
| |
| #include "Coordinator.h" |
| #include "Formatter.h" |
| #include "FQName.h" |
| #include "HandleType.h" |
| #include "Scope.h" |
| |
| #include <android-base/logging.h> |
| #include <stdlib.h> |
| #include <sys/dir.h> |
| |
| namespace android { |
| |
| AST::AST(Coordinator *coordinator) |
| : mCoordinator(coordinator), |
| mScanner(NULL), |
| mRootScope(new Scope) { |
| enterScope(mRootScope); |
| } |
| |
| AST::~AST() { |
| delete mRootScope; |
| mRootScope = NULL; |
| |
| CHECK(mScanner == NULL); |
| |
| // Ownership of "coordinator" was NOT transferred. |
| } |
| |
| void *AST::scanner() { |
| return mScanner; |
| } |
| |
| void AST::setScanner(void *scanner) { |
| mScanner = scanner; |
| } |
| |
| bool AST::setPackage(const char *package) { |
| mPackage.setTo(package); |
| CHECK(mPackage.isValid()); |
| |
| if (mPackage.package().empty() |
| || mPackage.version().empty() |
| || !mPackage.name().empty()) { |
| return false; |
| } |
| |
| return true; |
| } |
| |
| FQName AST::package() const { |
| return mPackage; |
| } |
| |
| bool AST::isInterface(std::string *ifaceName) const { |
| return mRootScope->containsSingleInterface(ifaceName); |
| } |
| |
| bool AST::addImport(const char *import) { |
| FQName fqName(import); |
| CHECK(fqName.isValid()); |
| |
| fqName.applyDefaults(mPackage.package(), mPackage.version()); |
| |
| // LOG(INFO) << "importing " << fqName.string(); |
| |
| if (fqName.name().empty()) { |
| const std::string packagePath = mCoordinator->getPackagePath(fqName); |
| DIR *dir = opendir(packagePath.c_str()); |
| |
| if (dir == NULL) { |
| return false; |
| } |
| |
| // Enumerate all regular files ending in ".hal" in the package directory |
| // and attempt to import all of them. |
| |
| Vector<std::string> fileNames; |
| |
| struct dirent *ent; |
| while ((ent = readdir(dir)) != NULL) { |
| if (ent->d_type != DT_REG) { |
| continue; |
| } |
| |
| const auto suffix = ".hal"; |
| const auto suffix_len = std::strlen(suffix); |
| const auto d_namelen = strlen(ent->d_name); |
| |
| if (d_namelen < suffix_len |
| || strcmp(ent->d_name + d_namelen - suffix_len, suffix)) { |
| continue; |
| } |
| |
| fileNames.push_back(std::string(ent->d_name, d_namelen - suffix_len)); |
| } |
| |
| closedir(dir); |
| dir = NULL; |
| |
| for (size_t i = 0; i < fileNames.size(); ++i) { |
| FQName subFQName( |
| fqName.package() + fqName.version() + "::" + fileNames[i]); |
| |
| if (!subFQName.isValid()) { |
| LOG(WARNING) |
| << "Whole-package import encountered invalid filename '" |
| << fileNames[i] |
| << "' in package " |
| << fqName.package() |
| << fqName.version(); |
| |
| continue; |
| } |
| |
| if (mCoordinator->parse(subFQName) == NULL) { |
| return false; |
| } |
| } |
| |
| return true; |
| } |
| |
| AST *importAST = mCoordinator->parse(fqName); |
| |
| if (importAST == NULL) { |
| return false; |
| } |
| |
| return true; |
| } |
| |
| void AST::enterScope(Scope *container) { |
| mScopePath.push_back(container); |
| } |
| |
| void AST::leaveScope() { |
| mScopePath.pop(); |
| } |
| |
| Scope *AST::scope() { |
| CHECK(!mScopePath.empty()); |
| return mScopePath.top(); |
| } |
| |
| bool AST::addScopedType(const char *localName, NamedType *type) { |
| // LOG(INFO) << "adding scoped type '" << localName << "'"; |
| |
| bool success = scope()->addType(localName, type); |
| if (!success) { |
| return false; |
| } |
| |
| std::string path; |
| for (size_t i = 1; i < mScopePath.size(); ++i) { |
| path.append(mScopePath[i]->localName()); |
| path.append("."); |
| } |
| path.append(localName); |
| |
| type->setLocalName(localName); |
| |
| FQName fqName(mPackage.package(), mPackage.version(), path); |
| type->setFullName(fqName); |
| |
| return true; |
| } |
| |
| Type *AST::lookupType(const char *name) { |
| FQName fqName(name); |
| CHECK(fqName.isValid()); |
| |
| if (fqName.name().empty()) { |
| // Given a package and version??? |
| return NULL; |
| } |
| |
| if (fqName.package().empty() && fqName.version().empty()) { |
| // This is just a plain identifier, resolve locally first if possible. |
| |
| for (size_t i = mScopePath.size(); i-- > 0;) { |
| Type *type = mScopePath[i]->lookupType(name); |
| |
| if (type != NULL) { |
| return type->ref(); |
| } |
| } |
| } |
| |
| fqName.applyDefaults(mPackage.package(), mPackage.version()); |
| |
| // LOG(INFO) << "lookupType now looking for " << fqName.string(); |
| |
| Type *resultType = mCoordinator->lookupType(fqName); |
| |
| if (resultType) { |
| if (!resultType->isInterface()) { |
| // Non-interface types are declared in the associated types header. |
| FQName typesName(fqName.package(), fqName.version(), "types"); |
| mImportedNames.insert(typesName); |
| } else { |
| mImportedNames.insert(fqName); |
| } |
| } |
| |
| return resultType; |
| } |
| |
| Type *AST::lookupTypeInternal(const std::string &namePath) const { |
| Scope *scope = mRootScope; |
| |
| size_t startPos = 0; |
| for (;;) { |
| size_t dotPos = namePath.find('.', startPos); |
| |
| std::string component; |
| if (dotPos == std::string::npos) { |
| component = namePath.substr(startPos); |
| } else { |
| component = namePath.substr(startPos, dotPos - startPos); |
| } |
| |
| Type *type = scope->lookupType(component.c_str()); |
| |
| if (type == NULL) { |
| return NULL; |
| } |
| |
| if (dotPos == std::string::npos) { |
| return type; |
| } |
| |
| if (!type->isScope()) { |
| return NULL; |
| } |
| |
| scope = static_cast<Scope *>(type); |
| startPos = dotPos + 1; |
| } |
| } |
| |
| } // namespace android; |