| #include "AST.h" |
| |
| #include "Coordinator.h" |
| #include "Formatter.h" |
| #include "FQName.h" |
| #include "HandleType.h" |
| #include "RefType.h" |
| #include "Scope.h" |
| |
| #include <android-base/logging.h> |
| #include <stdlib.h> |
| |
| namespace android { |
| |
| AST::AST(Coordinator *coordinator) |
| : mCoordinator(coordinator), |
| mScanner(NULL), |
| mRootScope(new Scope("root")) { |
| enterScope(mRootScope); |
| } |
| |
| AST::~AST() { |
| CHECK(scope() == mRootScope); |
| leaveScope(); |
| |
| 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; |
| } |
| |
| bool AST::addImport(const char *import) { |
| FQName fqName(import); |
| CHECK(fqName.isValid()); |
| |
| fqName.applyDefaults(mPackage.package(), mPackage.version()); |
| |
| LOG(INFO) << "importing " << fqName.debugString(); |
| const std::string packagePath = Coordinator::GetPackagePath(fqName); |
| |
| if (fqName.name().empty()) { |
| // TODO: Import the whole package. |
| CHECK(!"Should not be here"); |
| return false; |
| } |
| |
| std::string path = packagePath; |
| path.append(fqName.name()); |
| path.append(".hal"); |
| |
| AST *importAST = mCoordinator->parse(path.c_str()); |
| |
| 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(); |
| } |
| |
| Type *AST::lookupType(const char *name) const { |
| 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 new RefType(name, type); |
| } |
| } |
| } |
| |
| fqName.applyDefaults(mPackage.package(), mPackage.version()); |
| |
| // LOG(INFO) << "lookupType now looking for " << fqName.debugString(); |
| |
| return mCoordinator->lookupType(fqName); |
| } |
| |
| 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; |
| } |
| } |
| |
| void AST::dump(Formatter &out) const { |
| mRootScope->dump(out); |
| } |
| |
| } // namespace android; |