| // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| #include "vm/bootstrap.h" |
| |
| #include "include/dart_api.h" |
| |
| #include "vm/bootstrap_natives.h" |
| #include "vm/compiler.h" |
| #include "vm/dart_api_impl.h" |
| #include "vm/object.h" |
| #include "vm/object_store.h" |
| #include "vm/symbols.h" |
| |
| namespace dart { |
| |
| #define INIT_LIBRARY(index, name, source, patch) \ |
| { index, \ |
| "dart:"#name, source, \ |
| "dart:"#name"-patch", patch } \ |
| |
| typedef struct { |
| intptr_t index_; |
| const char* uri_; |
| const char** source_paths_; |
| const char* patch_uri_; |
| const char** patch_paths_; |
| } bootstrap_lib_props; |
| |
| |
| static bootstrap_lib_props bootstrap_libraries[] = { |
| INIT_LIBRARY(ObjectStore::kCore, |
| core, |
| Bootstrap::corelib_source_paths_, |
| Bootstrap::corelib_patch_paths_), |
| INIT_LIBRARY(ObjectStore::kAsync, |
| async, |
| Bootstrap::async_source_paths_, |
| Bootstrap::async_patch_paths_), |
| INIT_LIBRARY(ObjectStore::kCollection, |
| collection, |
| Bootstrap::collection_source_paths_, |
| Bootstrap::collection_patch_paths_), |
| INIT_LIBRARY(ObjectStore::kCollectionDev, |
| _collection-dev, |
| Bootstrap::collection_dev_source_paths_, |
| Bootstrap::collection_dev_patch_paths_), |
| INIT_LIBRARY(ObjectStore::kIsolate, |
| isolate, |
| Bootstrap::isolate_source_paths_, |
| Bootstrap::isolate_patch_paths_), |
| INIT_LIBRARY(ObjectStore::kJson, |
| json, |
| Bootstrap::json_source_paths_, |
| Bootstrap::json_patch_paths_), |
| INIT_LIBRARY(ObjectStore::kMath, |
| math, |
| Bootstrap::math_source_paths_, |
| Bootstrap::math_patch_paths_), |
| INIT_LIBRARY(ObjectStore::kMirrors, |
| mirrors, |
| Bootstrap::mirrors_source_paths_, |
| Bootstrap::mirrors_patch_paths_), |
| INIT_LIBRARY(ObjectStore::kTypedData, |
| typed_data, |
| Bootstrap::typed_data_source_paths_, |
| Bootstrap::typed_data_patch_paths_), |
| INIT_LIBRARY(ObjectStore::kUtf, |
| utf, |
| Bootstrap::utf_source_paths_, |
| NULL), |
| |
| { ObjectStore::kNone, NULL, NULL, NULL, NULL } |
| }; |
| |
| |
| static RawString* GetLibrarySource(const Library& lib, |
| const String& uri, |
| bool patch) { |
| // First check if this is a valid boot strap library and find it's index |
| // in the 'bootstrap_libraries' table above. |
| intptr_t index; |
| const String& lib_uri = String::Handle(lib.url()); |
| for (index = 0; |
| bootstrap_libraries[index].index_ != ObjectStore::kNone; |
| ++index) { |
| if (lib_uri.Equals(bootstrap_libraries[index].uri_)) { |
| break; |
| } |
| } |
| if (bootstrap_libraries[index].index_ == ObjectStore::kNone) { |
| return String::null(); // Library is not a boot strap library. |
| } |
| |
| // Try to read the source using the path specified for the uri. |
| const char** source_paths = patch ? |
| bootstrap_libraries[index].patch_paths_ : |
| bootstrap_libraries[index].source_paths_; |
| if (source_paths == NULL) { |
| return String::null(); // No path mapping information exists for library. |
| } |
| const char* source_path = NULL; |
| for (intptr_t i = 0; source_paths[i] != NULL; i += 2) { |
| if (uri.Equals(source_paths[i])) { |
| source_path = source_paths[i + 1]; |
| break; |
| } |
| } |
| if (source_path == NULL) { |
| return String::null(); // Uri does not exist in path mapping information. |
| } |
| |
| Dart_FileOpenCallback file_open = Isolate::file_open_callback(); |
| Dart_FileReadCallback file_read = Isolate::file_read_callback(); |
| Dart_FileCloseCallback file_close = Isolate::file_close_callback(); |
| if (file_open == NULL || file_read == NULL || file_close == NULL) { |
| return String::null(); // File operations are not supported. |
| } |
| |
| void* stream = (*file_open)(source_path, false); |
| if (stream == NULL) { |
| return String::null(); |
| } |
| |
| const uint8_t* utf8_array = NULL; |
| intptr_t file_length = -1; |
| (*file_read)(&utf8_array, &file_length, stream); |
| if (file_length == -1) { |
| return String::null(); |
| } |
| ASSERT(utf8_array != NULL); |
| |
| (*file_close)(stream); |
| |
| return String::FromUTF8(utf8_array, file_length); |
| } |
| |
| |
| static RawError* Compile(const Library& library, const Script& script) { |
| bool update_lib_status = (script.kind() == RawScript::kScriptTag || |
| script.kind() == RawScript::kLibraryTag); |
| if (update_lib_status) { |
| library.SetLoadInProgress(); |
| } |
| const Error& error = Error::Handle(Compiler::Compile(library, script)); |
| if (update_lib_status) { |
| if (error.IsNull()) { |
| library.SetLoaded(); |
| } else { |
| library.SetLoadError(); |
| } |
| } |
| return error.raw(); |
| } |
| |
| |
| static Dart_Handle LoadPartSource(Isolate* isolate, |
| const Library& lib, |
| const String& uri) { |
| const String& part_source = String::Handle( |
| isolate, GetLibrarySource(lib, uri, false)); |
| const String& lib_uri = String::Handle(isolate, lib.url()); |
| if (part_source.IsNull()) { |
| return Dart_NewApiError("Unable to read part file '%s' of library '%s'", |
| uri.ToCString(), lib_uri.ToCString()); |
| } |
| |
| // Prepend the library URI to form a unique script URI for the part. |
| const Array& strings = Array::Handle(isolate, Array::New(3)); |
| strings.SetAt(0, lib_uri); |
| strings.SetAt(1, Symbols::Slash()); |
| strings.SetAt(2, uri); |
| const String& part_uri = String::Handle(isolate, String::ConcatAll(strings)); |
| |
| // Create a script object and compile the part. |
| const Script& part_script = Script::Handle( |
| isolate, Script::New(part_uri, part_source, RawScript::kSourceTag)); |
| const Error& error = Error::Handle(isolate, Compile(lib, part_script)); |
| return Api::NewHandle(isolate, error.raw()); |
| } |
| |
| |
| static Dart_Handle BootstrapLibraryTagHandler(Dart_LibraryTag tag, |
| Dart_Handle library, |
| Dart_Handle uri) { |
| Isolate* isolate = Isolate::Current(); |
| if (!Dart_IsLibrary(library)) { |
| return Dart_NewApiError("not a library"); |
| } |
| if (!Dart_IsString(uri)) { |
| return Dart_NewApiError("uri is not a string"); |
| } |
| if (tag == Dart_kCanonicalizeUrl) { |
| // In the boot strap loader we do not try and do any canonicalization. |
| return uri; |
| } |
| const String& uri_str = Api::UnwrapStringHandle(isolate, uri); |
| ASSERT(!uri_str.IsNull()); |
| if (tag == Dart_kImportTag) { |
| // We expect the core bootstrap libraries to only import other |
| // core bootstrap libraries. |
| // We have precreated all the bootstrap library objects hence |
| // we do not expect to be called back with the tag set to kImportTag. |
| // The bootstrap process explicitly loads all the libraries one by one. |
| return Dart_NewApiError("Invalid import of '%s' in a bootstrap library", |
| uri_str.ToCString()); |
| } |
| ASSERT(tag == Dart_kSourceTag); |
| const Library& lib = Api::UnwrapLibraryHandle(isolate, library); |
| ASSERT(!lib.IsNull()); |
| return LoadPartSource(isolate, lib, uri_str); |
| } |
| |
| |
| static RawError* LoadPatchFiles(Isolate* isolate, |
| const Library& lib, |
| const String& patch_uri, |
| const char** patch_files) { |
| String& patch_file_uri = String::Handle(isolate); |
| String& source = String::Handle(isolate); |
| Script& script = Script::Handle(isolate); |
| Error& error = Error::Handle(isolate); |
| const Array& strings = Array::Handle(isolate, Array::New(3)); |
| strings.SetAt(0, patch_uri); |
| strings.SetAt(1, Symbols::Slash()); |
| for (intptr_t j = 0; patch_files[j] != NULL; j += 2) { |
| patch_file_uri = String::New(patch_files[j]); |
| source = GetLibrarySource(lib, patch_file_uri, true); |
| if (source.IsNull()) { |
| return Api::UnwrapErrorHandle( |
| isolate, |
| Api::NewError("Unable to find dart patch source for %s", |
| patch_file_uri.ToCString())).raw(); |
| } |
| // Prepend the patch library URI to form a unique script URI for the patch. |
| strings.SetAt(2, patch_file_uri); |
| patch_file_uri = String::ConcatAll(strings); |
| script = Script::New(patch_file_uri, source, RawScript::kPatchTag); |
| error = lib.Patch(script); |
| if (!error.IsNull()) { |
| return error.raw(); |
| } |
| } |
| return Error::null(); |
| } |
| |
| |
| RawError* Bootstrap::LoadandCompileScripts() { |
| Isolate* isolate = Isolate::Current(); |
| String& uri = String::Handle(); |
| String& patch_uri = String::Handle(); |
| String& source = String::Handle(); |
| Script& script = Script::Handle(); |
| Library& lib = Library::Handle(); |
| Error& error = Error::Handle(); |
| Dart_LibraryTagHandler saved_tag_handler = isolate->library_tag_handler(); |
| |
| // Set the library tag handler for the isolate to the bootstrap |
| // library tag handler so that we can load all the bootstrap libraries. |
| isolate->set_library_tag_handler(BootstrapLibraryTagHandler); |
| |
| // Enter the Dart Scope as we will be calling back into the library |
| // tag handler when compiling the bootstrap libraries. |
| Dart_EnterScope(); |
| |
| // Create library objects for all the bootstrap libraries. |
| for (intptr_t i = 0; |
| bootstrap_libraries[i].index_ != ObjectStore::kNone; |
| ++i) { |
| uri = Symbols::New(bootstrap_libraries[i].uri_); |
| lib = Library::LookupLibrary(uri); |
| if (lib.IsNull()) { |
| lib = Library::NewLibraryHelper(uri, false); |
| lib.Register(); |
| } |
| isolate->object_store()->set_bootstrap_library( |
| bootstrap_libraries[i].index_, lib); |
| } |
| |
| // Load, compile and patch bootstrap libraries. |
| for (intptr_t i = 0; |
| bootstrap_libraries[i].index_ != ObjectStore::kNone; |
| ++i) { |
| uri = Symbols::New(bootstrap_libraries[i].uri_); |
| lib = Library::LookupLibrary(uri); |
| ASSERT(!lib.IsNull()); |
| source = GetLibrarySource(lib, uri, false); |
| if (source.IsNull()) { |
| error ^= Api::UnwrapErrorHandle( |
| isolate, Api::NewError("Unable to find dart source for %s", |
| uri.ToCString())).raw(); |
| break; |
| } |
| script = Script::New(uri, source, RawScript::kLibraryTag); |
| error = Compile(lib, script); |
| if (!error.IsNull()) { |
| break; |
| } |
| // If a patch exists, load and patch the script. |
| if (bootstrap_libraries[i].patch_paths_ != NULL) { |
| patch_uri = Symbols::New(bootstrap_libraries[i].patch_uri_); |
| error = LoadPatchFiles(isolate, |
| lib, |
| patch_uri, |
| bootstrap_libraries[i].patch_paths_); |
| if (!error.IsNull()) { |
| break; |
| } |
| } |
| } |
| if (error.IsNull()) { |
| SetupNativeResolver(); |
| } |
| |
| // Exit the Dart scope. |
| Dart_ExitScope(); |
| |
| // Restore the library tag handler for the isolate. |
| isolate->set_library_tag_handler(saved_tag_handler); |
| |
| return error.raw(); |
| } |
| |
| } // namespace dart |
