Index: runtime/vm/kernel_reader.cc |
diff --git a/runtime/vm/kernel_reader.cc b/runtime/vm/kernel_reader.cc |
deleted file mode 100644 |
index 6a6904065a658097198026dfa6473cad47dcd5fd..0000000000000000000000000000000000000000 |
--- a/runtime/vm/kernel_reader.cc |
+++ /dev/null |
@@ -1,1014 +0,0 @@ |
-// Copyright (c) 2016, 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/kernel_reader.h" |
- |
-#include <string.h> |
- |
-#include "vm/dart_api_impl.h" |
-#include "vm/kernel_binary.h" |
-#include "vm/kernel_binary_flowgraph.h" |
-#include "vm/kernel_to_il.h" |
-#include "vm/longjump.h" |
-#include "vm/object_store.h" |
-#include "vm/parser.h" |
-#include "vm/symbols.h" |
- |
-#if !defined(DART_PRECOMPILED_RUNTIME) |
-namespace dart { |
-namespace kernel { |
- |
-#define Z (zone_) |
-#define I (isolate_) |
-#define T (builder_.type_translator_) |
-#define H (translation_helper_) |
- |
-class SimpleExpressionConverter { |
- public: |
- SimpleExpressionConverter(TranslationHelper* helper, |
- StreamingFlowGraphBuilder* builder) |
- : translation_helper_(*helper), |
- zone_(translation_helper_.zone()), |
- simple_value_(NULL), |
- builder_(builder) {} |
- |
- bool IsSimple(intptr_t kernel_offset) { |
- AlternativeReadingScope alt(builder_->reader_, kernel_offset); |
- uint8_t payload = 0; |
- Tag tag = builder_->ReadTag(&payload); // read tag. |
- switch (tag) { |
- case kBigIntLiteral: { |
- const String& literal_str = |
- H.DartString(builder_->ReadStringReference(), |
- Heap::kOld); // read index into string table. |
- simple_value_ = &Integer::ZoneHandle(Z, Integer::New(literal_str)); |
- if (simple_value_->IsNull()) { |
- H.ReportError("Integer literal %s is out of range", |
- literal_str.ToCString()); |
- UNREACHABLE(); |
- } |
- *simple_value_ = H.Canonicalize(*simple_value_); |
- return true; |
- } |
- case kStringLiteral: |
- simple_value_ = &H.DartSymbol( |
- builder_->ReadStringReference()); // read index into string table. |
- return true; |
- case kSpecialIntLiteral: |
- simple_value_ = |
- &Integer::ZoneHandle(Z, Integer::New(static_cast<int32_t>(payload) - |
- SpecializedIntLiteralBias, |
- Heap::kOld)); |
- *simple_value_ = H.Canonicalize(*simple_value_); |
- return true; |
- case kNegativeIntLiteral: |
- simple_value_ = &Integer::ZoneHandle( |
- Z, Integer::New(-static_cast<int64_t>(builder_->ReadUInt()), |
- Heap::kOld)); // read value. |
- *simple_value_ = H.Canonicalize(*simple_value_); |
- return true; |
- case kPositiveIntLiteral: |
- simple_value_ = &Integer::ZoneHandle( |
- Z, Integer::New(static_cast<int64_t>(builder_->ReadUInt()), |
- Heap::kOld)); // read value. |
- *simple_value_ = H.Canonicalize(*simple_value_); |
- return true; |
- case kDoubleLiteral: |
- simple_value_ = &Double::ZoneHandle( |
- Z, Double::New(H.DartString(builder_->ReadStringReference()), |
- Heap::kOld)); // read string reference. |
- *simple_value_ = H.Canonicalize(*simple_value_); |
- return true; |
- case kTrueLiteral: |
- simple_value_ = &Bool::Handle(Z, Bool::Get(true).raw()); |
- return true; |
- case kFalseLiteral: |
- simple_value_ = &Bool::Handle(Z, Bool::Get(false).raw()); |
- return true; |
- case kNullLiteral: |
- simple_value_ = &Instance::ZoneHandle(Z, Instance::null()); |
- return true; |
- default: |
- return false; |
- } |
- } |
- |
- const Instance& SimpleValue() { return *simple_value_; } |
- Zone* zone() const { return zone_; } |
- |
- private: |
- TranslationHelper& translation_helper_; |
- Zone* zone_; |
- Instance* simple_value_; |
- StreamingFlowGraphBuilder* builder_; |
-}; |
- |
-RawArray* KernelReader::MakeFunctionsArray() { |
- const intptr_t len = functions_.length(); |
- const Array& res = Array::Handle(zone_, Array::New(len, Heap::kOld)); |
- for (intptr_t i = 0; i < len; i++) { |
- res.SetAt(i, *functions_[i]); |
- } |
- return res.raw(); |
-} |
- |
-RawLibrary* BuildingTranslationHelper::LookupLibraryByKernelLibrary( |
- NameIndex library) { |
- return reader_->LookupLibrary(library).raw(); |
-} |
- |
-RawClass* BuildingTranslationHelper::LookupClassByKernelClass(NameIndex klass) { |
- return reader_->LookupClass(klass).raw(); |
-} |
- |
-KernelReader::KernelReader(Program* program) |
- : program_(program), |
- thread_(Thread::Current()), |
- zone_(thread_->zone()), |
- isolate_(thread_->isolate()), |
- scripts_(Array::ZoneHandle(zone_)), |
- patch_classes_(Array::ZoneHandle(zone_)), |
- translation_helper_(this, thread_), |
- builder_(&translation_helper_, |
- zone_, |
- program_->kernel_data(), |
- program_->kernel_data_size()) { |
- T.active_class_ = &active_class_; |
- T.finalize_ = false; |
- |
- scripts_ = Array::New(builder_.SourceTableSize(), Heap::kOld); |
- patch_classes_ = Array::New(builder_.SourceTableSize(), Heap::kOld); |
- |
- // Copy the Kernel string offsets out of the binary and into the VM's heap. |
- ASSERT(program->string_table_offset() >= 0); |
- Reader reader(program->kernel_data(), program->kernel_data_size()); |
- reader.set_offset(program->string_table_offset()); |
- intptr_t count = reader.ReadUInt() + 1; |
- TypedData& offsets = TypedData::Handle( |
- Z, TypedData::New(kTypedDataUint32ArrayCid, count, Heap::kOld)); |
- offsets.SetUint32(0, 0); |
- intptr_t end_offset = 0; |
- for (intptr_t i = 1; i < count; ++i) { |
- end_offset = reader.ReadUInt(); |
- offsets.SetUint32(i << 2, end_offset); |
- } |
- |
- // Copy the string data out of the binary and into the VM's heap. |
- TypedData& data = |
- reader.CopyDataToVMHeap(Z, reader.offset(), reader.offset() + end_offset); |
- |
- // Copy the canonical names into the VM's heap. Encode them as unsigned, so |
- // the parent indexes are adjusted when extracted. |
- reader.set_offset(program->name_table_offset()); |
- count = reader.ReadUInt() * 2; |
- TypedData& names = TypedData::Handle( |
- Z, TypedData::New(kTypedDataUint32ArrayCid, count, Heap::kOld)); |
- for (intptr_t i = 0; i < count; ++i) { |
- names.SetUint32(i << 2, reader.ReadUInt()); |
- } |
- |
- H.SetStringOffsets(offsets); |
- H.SetStringData(data); |
- H.SetCanonicalNames(names); |
-} |
- |
-Object& KernelReader::ReadProgram() { |
- LongJumpScope jump; |
- if (setjmp(*jump.Set()) == 0) { |
- intptr_t length = program_->library_count(); |
- for (intptr_t i = 0; i < length; i++) { |
- ReadLibrary(library_offset(i)); |
- } |
- |
- for (intptr_t i = 0; i < length; i++) { |
- Library& library = LookupLibrary(library_canonical_name(i)); |
- if (!library.Loaded()) library.SetLoaded(); |
- } |
- |
- if (ClassFinalizer::ProcessPendingClasses(/*from_kernel=*/true)) { |
- // If 'main' is not found return a null library, this is the case |
- // when bootstrapping is in progress. |
- NameIndex main = program_->main_method(); |
- if (main == -1) { |
- return Library::Handle(Z); |
- } |
- |
- NameIndex main_library = H.EnclosingName(main); |
- Library& library = LookupLibrary(main_library); |
- // Sanity check that we can find the main entrypoint. |
- ASSERT(library.LookupObjectAllowPrivate(H.DartSymbol("main")) != |
- Object::null()); |
- return library; |
- } |
- } |
- |
- // Either class finalization failed or we caught a compile error. |
- // In both cases sticky error would be set. |
- Error& error = Error::Handle(Z); |
- error = thread_->sticky_error(); |
- thread_->clear_sticky_error(); |
- return error; |
-} |
- |
-void KernelReader::FindModifiedLibraries(Isolate* isolate, |
- BitVector* modified_libs, |
- bool force_reload) { |
- LongJumpScope jump; |
- if (setjmp(*jump.Set()) == 0) { |
- if (force_reload) { |
- // If a reload is being forced we mark all libraries as having |
- // been modified. |
- const GrowableObjectArray& libs = |
- GrowableObjectArray::Handle(isolate->object_store()->libraries()); |
- intptr_t num_libs = libs.Length(); |
- Library& lib = dart::Library::Handle(Z); |
- for (intptr_t i = 0; i < num_libs; i++) { |
- lib ^= libs.At(i); |
- if (!lib.is_dart_scheme()) { |
- modified_libs->Add(lib.index()); |
- } |
- } |
- return; |
- } |
- // Now go through all the libraries that are present in the incremental |
- // kernel files, these will constitute the modified libraries. |
- intptr_t length = program_->library_count(); |
- for (intptr_t i = 0; i < length; i++) { |
- intptr_t kernel_offset = library_offset(i); |
- builder_.SetOffset(kernel_offset); |
- LibraryHelper library_helper(&builder_); |
- library_helper.ReadUntilIncluding(LibraryHelper::kCanonicalName); |
- dart::Library& lib = LookupLibrary(library_helper.canonical_name_); |
- if (!lib.IsNull() && !lib.is_dart_scheme()) { |
- // This is a library that already exists so mark it as being modified. |
- modified_libs->Add(lib.index()); |
- } |
- } |
- } |
-} |
- |
-void KernelReader::ReadLibrary(intptr_t kernel_offset) { |
- builder_.SetOffset(kernel_offset); |
- LibraryHelper library_helper(&builder_); |
- library_helper.ReadUntilIncluding(LibraryHelper::kCanonicalName); |
- Library& library = LookupLibrary(library_helper.canonical_name_); |
- // The Kernel library is external implies that it is already loaded. |
- ASSERT(!library_helper.IsExternal() || library.Loaded()); |
- if (library.Loaded()) return; |
- |
- library_helper.ReadUntilIncluding(LibraryHelper::kName); |
- library.SetName(H.DartSymbol(library_helper.name_index_)); |
- |
- // The bootstrapper will take care of creating the native wrapper classes, but |
- // we will add the synthetic constructors to them here. |
- if (library.name() == |
- Symbols::Symbol(Symbols::kDartNativeWrappersLibNameId).raw()) { |
- ASSERT(library.LoadInProgress()); |
- } else { |
- library.SetLoadInProgress(); |
- } |
- // Setup toplevel class (which contains library fields/procedures). |
- |
- StringIndex import_uri_index = |
- H.CanonicalNameString(library_helper.canonical_name_); |
- library_helper.ReadUntilIncluding(LibraryHelper::kSourceUriIndex); |
- Script& script = ScriptAt(library_helper.source_uri_index_, import_uri_index); |
- |
- Class& toplevel_class = |
- Class::Handle(Z, Class::New(library, Symbols::TopLevel(), script, |
- TokenPosition::kNoSource)); |
- toplevel_class.set_is_cycle_free(); |
- library.set_toplevel_class(toplevel_class); |
- |
- const GrowableObjectArray& classes = |
- GrowableObjectArray::Handle(Z, I->object_store()->pending_classes()); |
- |
- library_helper.ReadUntilExcluding(LibraryHelper::kClasses); |
- |
- // Load all classes. |
- int class_count = builder_.ReadListLength(); // read list length. |
- for (intptr_t i = 0; i < class_count; ++i) { |
- classes.Add(ReadClass(library, toplevel_class), Heap::kOld); |
- } |
- |
- fields_.Clear(); |
- functions_.Clear(); |
- ActiveClassScope active_class_scope(&active_class_, &toplevel_class); |
- // Load toplevel fields. |
- intptr_t field_count = builder_.ReadListLength(); // read list length. |
- for (intptr_t i = 0; i < field_count; ++i) { |
- intptr_t field_offset = builder_.ReaderOffset(); |
- ActiveMemberScope active_member_scope(&active_class_, NULL); |
- FieldHelper field_helper(&builder_); |
- field_helper.ReadUntilExcluding(FieldHelper::kName); |
- |
- const String& name = builder_.ReadNameAsFieldName(); |
- field_helper.SetJustRead(FieldHelper::kName); |
- field_helper.ReadUntilExcluding(FieldHelper::kType); |
- const Object& script_class = |
- ClassForScriptAt(toplevel_class, field_helper.source_uri_index_); |
- Field& field = Field::Handle( |
- Z, |
- Field::NewTopLevel(name, field_helper.IsFinal(), field_helper.IsConst(), |
- script_class, field_helper.position_)); |
- field.set_kernel_offset(field_offset); |
- const AbstractType& type = T.BuildType(); // read type. |
- field.SetFieldType(type); |
- field_helper.SetJustRead(FieldHelper::kType); |
- field_helper.ReadUntilExcluding(FieldHelper::kInitializer); |
- intptr_t field_initializer_offset = builder_.ReaderOffset(); |
- field.set_has_initializer(builder_.PeekTag() == kSomething); |
- field_helper.ReadUntilExcluding(FieldHelper::kEnd); |
- TypedData& kernel_data = builder_.reader_->CopyDataToVMHeap( |
- Z, field_offset, builder_.ReaderOffset()); |
- field.set_kernel_data(kernel_data); |
- { |
- // GenerateFieldAccessors reads (some of) the initializer. |
- AlternativeReadingScope alt(builder_.reader_, field_initializer_offset); |
- GenerateFieldAccessors(toplevel_class, field, &field_helper, |
- field_offset); |
- } |
- if (FLAG_enable_mirrors && field_helper.annotation_count_ > 0) { |
- library.AddFieldMetadata(field, TokenPosition::kNoSource, field_offset, |
- &kernel_data); |
- } |
- fields_.Add(&field); |
- library.AddObject(field, name); |
- } |
- toplevel_class.AddFields(fields_); |
- |
- // Load toplevel procedures. |
- intptr_t procedure_count = builder_.ReadListLength(); // read list length. |
- for (intptr_t i = 0; i < procedure_count; ++i) { |
- ReadProcedure(library, toplevel_class, false); |
- } |
- |
- toplevel_class.SetFunctions(Array::Handle(MakeFunctionsArray())); |
- |
- classes.Add(toplevel_class, Heap::kOld); |
-} |
- |
-void KernelReader::ReadPreliminaryClass(Class* klass, |
- ClassHelper* class_helper, |
- intptr_t type_parameter_count) { |
- // Note: This assumes that ClassHelper is exactly at the position where |
- // the length of the type parameters have been read, and that the order in |
- // the binary is as follows: [...], kTypeParameters, kSuperClass, kMixinType, |
- // kImplementedClasses, [...]. |
- |
- // Set type parameters. |
- ReadAndSetupTypeParameters(*klass, type_parameter_count, *klass, |
- Function::Handle(Z)); |
- |
- // Set super type. Some classes (e.g., Object) do not have one. |
- Tag type_tag = builder_.ReadTag(); // read super class type (part 1). |
- if (type_tag == kSomething) { |
- AbstractType& super_type = |
- T.BuildTypeWithoutFinalization(); // read super class type (part 2). |
- if (super_type.IsMalformed()) H.ReportError("Malformed super type"); |
- klass->set_super_type(super_type); |
- } |
- |
- class_helper->SetJustRead(ClassHelper::kSuperClass); |
- class_helper->ReadUntilIncluding(ClassHelper::kMixinType); |
- |
- // Build implemented interface types |
- intptr_t interface_count = builder_.ReadListLength(); |
- const Array& interfaces = |
- Array::Handle(Z, Array::New(interface_count, Heap::kOld)); |
- for (intptr_t i = 0; i < interface_count; i++) { |
- const AbstractType& type = |
- T.BuildTypeWithoutFinalization(); // read ith type. |
- if (type.IsMalformed()) H.ReportError("Malformed interface type."); |
- interfaces.SetAt(i, type); |
- } |
- class_helper->SetJustRead(ClassHelper::kImplementedClasses); |
- klass->set_interfaces(interfaces); |
- |
- if (class_helper->is_abstract_) klass->set_is_abstract(); |
-} |
- |
-Class& KernelReader::ReadClass(const Library& library, |
- const Class& toplevel_class) { |
- ClassHelper class_helper(&builder_); |
- intptr_t class_offset = builder_.ReaderOffset(); |
- class_helper.ReadUntilIncluding(ClassHelper::kCanonicalName); |
- Class& klass = LookupClass(class_helper.canonical_name_); |
- |
- // The class needs to have a script because all the functions in the class |
- // will inherit it. The predicate Function::IsOptimizable uses the absence of |
- // a script to detect test functions that should not be optimized. |
- if (klass.script() == Script::null()) { |
- class_helper.ReadUntilIncluding(ClassHelper::kSourceUriIndex); |
- klass.set_script(ScriptAt(class_helper.source_uri_index_)); |
- } |
- if (klass.token_pos() == TokenPosition::kNoSource) { |
- class_helper.ReadUntilIncluding(ClassHelper::kPosition); |
- klass.set_token_pos(class_helper.position_); |
- } |
- |
- class_helper.ReadUntilIncluding(ClassHelper::kAnnotations); |
- intptr_t class_offset_after_annotations = builder_.ReaderOffset(); |
- class_helper.ReadUntilExcluding(ClassHelper::kTypeParameters); |
- intptr_t type_parameter_counts = |
- builder_.ReadListLength(); // read type_parameters list length. |
- |
- ActiveClassScope active_class_scope(&active_class_, &klass); |
- if (!klass.is_cycle_free()) { |
- ReadPreliminaryClass(&klass, &class_helper, type_parameter_counts); |
- } else { |
- for (intptr_t i = 0; i < type_parameter_counts; ++i) { |
- builder_.SkipStringReference(); // read ith name index. |
- builder_.SkipDartType(); // read ith bound. |
- } |
- class_helper.SetJustRead(ClassHelper::kTypeParameters); |
- } |
- |
- fields_.Clear(); |
- functions_.Clear(); |
- |
- if (library.raw() == Library::InternalLibrary() && |
- klass.Name() == Symbols::ClassID().raw()) { |
- // If this is a dart:internal.ClassID class ignore field declarations |
- // contained in the Kernel file and instead inject our own const |
- // fields. |
- klass.InjectCIDFields(); |
- } else { |
- class_helper.ReadUntilExcluding(ClassHelper::kFields); |
- int field_count = builder_.ReadListLength(); // read list length. |
- for (intptr_t i = 0; i < field_count; ++i) { |
- intptr_t field_offset = builder_.ReaderOffset(); |
- ActiveMemberScope active_member(&active_class_, NULL); |
- FieldHelper field_helper(&builder_); |
- field_helper.ReadUntilExcluding(FieldHelper::kName); |
- |
- const String& name = builder_.ReadNameAsFieldName(); |
- field_helper.SetJustRead(FieldHelper::kName); |
- field_helper.ReadUntilExcluding(FieldHelper::kType); |
- const AbstractType& type = |
- T.BuildTypeWithoutFinalization(); // read type. |
- field_helper.SetJustRead(FieldHelper::kType); |
- const Object& script_class = |
- ClassForScriptAt(klass, field_helper.source_uri_index_); |
- |
- const bool is_reflectable = |
- field_helper.position_.IsReal() && |
- !(library.is_dart_scheme() && library.IsPrivate(name)); |
- Field& field = Field::Handle( |
- Z, Field::New(name, field_helper.IsStatic(), |
- // In the VM all const fields are implicitly final |
- // whereas in Kernel they are not final because they |
- // are not explicitly declared that way. |
- field_helper.IsFinal() || field_helper.IsConst(), |
- field_helper.IsConst(), is_reflectable, script_class, |
- type, field_helper.position_)); |
- field.set_kernel_offset(field_offset); |
- field_helper.ReadUntilExcluding(FieldHelper::kInitializer); |
- intptr_t field_initializer_offset = builder_.ReaderOffset(); |
- field.set_has_initializer(builder_.PeekTag() == kSomething); |
- field_helper.ReadUntilExcluding(FieldHelper::kEnd); |
- TypedData& kernel_data = builder_.reader_->CopyDataToVMHeap( |
- Z, field_offset, builder_.ReaderOffset()); |
- field.set_kernel_data(kernel_data); |
- { |
- // GenerateFieldAccessors reads (some of) the initializer. |
- AlternativeReadingScope alt(builder_.reader_, field_initializer_offset); |
- GenerateFieldAccessors(klass, field, &field_helper, field_offset); |
- } |
- if (FLAG_enable_mirrors && field_helper.annotation_count_ > 0) { |
- library.AddFieldMetadata(field, TokenPosition::kNoSource, field_offset, |
- &kernel_data); |
- } |
- fields_.Add(&field); |
- } |
- klass.AddFields(fields_); |
- class_helper.SetJustRead(ClassHelper::kFields); |
- } |
- |
- class_helper.ReadUntilExcluding(ClassHelper::kConstructors); |
- int constructor_count = builder_.ReadListLength(); // read list length. |
- for (intptr_t i = 0; i < constructor_count; ++i) { |
- intptr_t constructor_offset = builder_.ReaderOffset(); |
- ActiveMemberScope active_member_scope(&active_class_, NULL); |
- ConstructorHelper constructor_helper(&builder_); |
- constructor_helper.ReadUntilExcluding(ConstructorHelper::kFunction); |
- |
- const String& name = |
- H.DartConstructorName(constructor_helper.canonical_name_); |
- Function& function = Function::ZoneHandle( |
- Z, Function::New(name, RawFunction::kConstructor, |
- false, // is_static |
- constructor_helper.IsConst(), |
- false, // is_abstract |
- constructor_helper.IsExternal(), |
- false, // is_native |
- klass, constructor_helper.position_)); |
- function.set_end_token_pos(constructor_helper.end_position_); |
- functions_.Add(&function); |
- function.set_kernel_offset(constructor_offset); |
- function.set_result_type(T.ReceiverType(klass)); |
- |
- FunctionNodeHelper function_node_helper(&builder_); |
- function_node_helper.ReadUntilExcluding( |
- FunctionNodeHelper::kRequiredParameterCount); |
- builder_.SetupFunctionParameters(klass, function, |
- true, // is_method |
- false, // is_closure |
- &function_node_helper); |
- function_node_helper.ReadUntilExcluding(FunctionNodeHelper::kEnd); |
- constructor_helper.SetJustRead(ConstructorHelper::kFunction); |
- constructor_helper.ReadUntilExcluding(ConstructorHelper::kEnd); |
- TypedData& kernel_data = builder_.reader_->CopyDataToVMHeap( |
- Z, constructor_offset, builder_.ReaderOffset()); |
- function.set_kernel_data(kernel_data); |
- |
- if (FLAG_enable_mirrors && constructor_helper.annotation_count_ > 0) { |
- library.AddFunctionMetadata(function, TokenPosition::kNoSource, |
- constructor_offset, &kernel_data); |
- } |
- } |
- class_helper.SetJustRead(ClassHelper::kConstructors); |
- |
- class_helper.ReadUntilExcluding(ClassHelper::kProcedures); |
- int procedure_count = builder_.ReadListLength(); // read list length. |
- for (intptr_t i = 0; i < procedure_count; ++i) { |
- ReadProcedure(library, klass, true); |
- } |
- class_helper.SetJustRead(ClassHelper::kProcedures); |
- |
- klass.SetFunctions(Array::Handle(MakeFunctionsArray())); |
- |
- if (!klass.is_marked_for_parsing()) { |
- klass.set_is_marked_for_parsing(); |
- } |
- |
- if (FLAG_enable_mirrors && class_helper.annotation_count_ > 0) { |
- TypedData& header_data = builder_.reader_->CopyDataToVMHeap( |
- Z, class_offset, class_offset_after_annotations); |
- library.AddClassMetadata(klass, toplevel_class, TokenPosition::kNoSource, |
- class_offset, &header_data); |
- } |
- |
- class_helper.ReadUntilExcluding(ClassHelper::kEnd); |
- |
- return klass; |
-} |
- |
-void KernelReader::ReadProcedure(const Library& library, |
- const Class& owner, |
- bool in_class) { |
- intptr_t procedure_offset = builder_.ReaderOffset(); |
- ProcedureHelper procedure_helper(&builder_); |
- |
- procedure_helper.ReadUntilExcluding(ProcedureHelper::kAnnotations); |
- const String& name = H.DartProcedureName(procedure_helper.canonical_name_); |
- bool is_method = in_class && !procedure_helper.IsStatic(); |
- bool is_abstract = procedure_helper.IsAbstract(); |
- bool is_external = procedure_helper.IsExternal(); |
- String* native_name = NULL; |
- intptr_t annotation_count; |
- if (is_external) { |
- // Maybe it has a native implementation, which is not external as far as |
- // the VM is concerned because it does have an implementation. Check for |
- // an ExternalName annotation and extract the string from it. |
- annotation_count = builder_.ReadListLength(); // read list length. |
- for (int i = 0; i < annotation_count; ++i) { |
- if (builder_.PeekTag() != kConstructorInvocation && |
- builder_.PeekTag() != kConstConstructorInvocation) { |
- builder_.SkipExpression(); |
- continue; |
- } |
- builder_.ReadTag(); |
- builder_.ReadPosition(); |
- NameIndex annotation_class = H.EnclosingName( |
- builder_.ReadCanonicalNameReference()); // read target reference, |
- ASSERT(H.IsClass(annotation_class)); |
- StringIndex class_name_index = H.CanonicalNameString(annotation_class); |
- // Just compare by name, do not generate the annotation class. |
- if (!H.StringEquals(class_name_index, "ExternalName")) { |
- builder_.SkipArguments(); |
- continue; |
- } |
- ASSERT(H.IsLibrary(H.CanonicalNameParent(annotation_class))); |
- StringIndex library_name_index = |
- H.CanonicalNameString(H.CanonicalNameParent(annotation_class)); |
- if (!H.StringEquals(library_name_index, "dart:_internal")) { |
- builder_.SkipArguments(); |
- continue; |
- } |
- |
- is_external = false; |
- // Read arguments: |
- intptr_t total_arguments = builder_.ReadUInt(); // read argument count. |
- builder_.SkipListOfDartTypes(); // read list of types. |
- intptr_t positional_arguments = builder_.ReadListLength(); |
- ASSERT(total_arguments == 1 && positional_arguments == 1); |
- |
- Tag tag = builder_.ReadTag(); |
- ASSERT(tag == kStringLiteral); |
- native_name = &H.DartSymbol( |
- builder_.ReadStringReference()); // read index into string table. |
- |
- // List of named. |
- intptr_t list_length = builder_.ReadListLength(); // read list length. |
- ASSERT(list_length == 0); |
- |
- // Skip remaining annotations |
- for (++i; i < annotation_count; ++i) { |
- builder_.SkipExpression(); // read ith annotation. |
- } |
- |
- break; |
- } |
- procedure_helper.SetJustRead(ProcedureHelper::kAnnotations); |
- } else { |
- procedure_helper.ReadUntilIncluding(ProcedureHelper::kAnnotations); |
- annotation_count = procedure_helper.annotation_count_; |
- } |
- const Object& script_class = |
- ClassForScriptAt(owner, procedure_helper.source_uri_index_); |
- Function& function = Function::ZoneHandle( |
- Z, Function::New(name, GetFunctionType(procedure_helper.kind_), |
- !is_method, // is_static |
- false, // is_const |
- is_abstract, is_external, |
- native_name != NULL, // is_native |
- script_class, procedure_helper.position_)); |
- function.set_end_token_pos(procedure_helper.end_position_); |
- functions_.Add(&function); |
- function.set_kernel_offset(procedure_offset); |
- |
- ActiveMemberScope active_member(&active_class_, &function); |
- |
- procedure_helper.ReadUntilExcluding(ProcedureHelper::kFunction); |
- Tag function_node_tag = builder_.ReadTag(); |
- ASSERT(function_node_tag == kSomething); |
- FunctionNodeHelper function_node_helper(&builder_); |
- function_node_helper.ReadUntilIncluding(FunctionNodeHelper::kDartAsyncMarker); |
- function.set_is_debuggable(function_node_helper.dart_async_marker_ == |
- FunctionNodeHelper::kSync); |
- switch (function_node_helper.dart_async_marker_) { |
- case FunctionNodeHelper::kSyncStar: |
- function.set_modifier(RawFunction::kSyncGen); |
- break; |
- case FunctionNodeHelper::kAsync: |
- function.set_modifier(RawFunction::kAsync); |
- function.set_is_inlinable(!FLAG_causal_async_stacks); |
- break; |
- case FunctionNodeHelper::kAsyncStar: |
- function.set_modifier(RawFunction::kAsyncGen); |
- function.set_is_inlinable(!FLAG_causal_async_stacks); |
- break; |
- default: |
- // no special modifier |
- break; |
- } |
- ASSERT(function_node_helper.async_marker_ == FunctionNodeHelper::kSync); |
- |
- if (native_name != NULL) { |
- function.set_native_name(*native_name); |
- } |
- |
- function_node_helper.ReadUntilExcluding(FunctionNodeHelper::kTypeParameters); |
- if (!function.IsFactory()) { |
- // Read type_parameters list length. |
- intptr_t type_parameter_count = builder_.ReadListLength(); |
- // Set type parameters. |
- ReadAndSetupTypeParameters(function, type_parameter_count, Class::Handle(Z), |
- function); |
- function_node_helper.SetJustRead(FunctionNodeHelper::kTypeParameters); |
- } |
- |
- function_node_helper.ReadUntilExcluding( |
- FunctionNodeHelper::kRequiredParameterCount); |
- builder_.SetupFunctionParameters(owner, function, is_method, |
- false, // is_closure |
- &function_node_helper); |
- function_node_helper.ReadUntilExcluding(FunctionNodeHelper::kEnd); |
- procedure_helper.SetJustRead(ProcedureHelper::kFunction); |
- |
- if (!in_class) { |
- library.AddObject(function, name); |
- ASSERT(!Object::Handle( |
- Z, library.LookupObjectAllowPrivate( |
- H.DartProcedureName(procedure_helper.canonical_name_))) |
- .IsNull()); |
- } |
- |
- procedure_helper.ReadUntilExcluding(ProcedureHelper::kEnd); |
- TypedData& kernel_data = builder_.reader_->CopyDataToVMHeap( |
- Z, procedure_offset, builder_.ReaderOffset()); |
- function.set_kernel_data(kernel_data); |
- |
- if (FLAG_enable_mirrors && annotation_count > 0) { |
- library.AddFunctionMetadata(function, TokenPosition::kNoSource, |
- procedure_offset, &kernel_data); |
- } |
-} |
- |
-void KernelReader::ReadAndSetupTypeParameters( |
- const Object& set_on, |
- intptr_t type_parameter_count, |
- const Class& parameterized_class, |
- const Function& parameterized_function) { |
- ASSERT(type_parameter_count >= 0); |
- if (type_parameter_count == 0) { |
- return; |
- } |
- // First setup the type parameters, so if any of the following code uses it |
- // (in a recursive way) we're fine. |
- TypeArguments& type_parameters = |
- TypeArguments::Handle(Z, TypeArguments::null()); |
- TypeParameter& parameter = TypeParameter::Handle(Z); |
- Type& null_bound = Type::Handle(Z, Type::null()); |
- |
- // Step a) Create array of [TypeParameter] objects (without bound). |
- type_parameters = TypeArguments::New(type_parameter_count); |
- { |
- AlternativeReadingScope alt(builder_.reader_); |
- for (intptr_t i = 0; i < type_parameter_count; i++) { |
- parameter = TypeParameter::New( |
- parameterized_class, parameterized_function, i, |
- H.DartSymbol(builder_.ReadStringReference()), // read ith name index. |
- null_bound, TokenPosition::kNoSource); |
- type_parameters.SetTypeAt(i, parameter); |
- builder_.SkipDartType(); // read guard. |
- } |
- } |
- |
- ASSERT(set_on.IsClass() || set_on.IsFunction()); |
- if (set_on.IsClass()) { |
- Class::Cast(set_on).set_type_parameters(type_parameters); |
- } else { |
- Function::Cast(set_on).set_type_parameters(type_parameters); |
- } |
- |
- // Step b) Fill in the bounds of all [TypeParameter]s. |
- for (intptr_t i = 0; i < type_parameter_count; i++) { |
- builder_.SkipStringReference(); // read ith name index. |
- |
- // TODO(github.com/dart-lang/kernel/issues/42): This should be handled |
- // by the frontend. |
- parameter ^= type_parameters.TypeAt(i); |
- Tag tag = builder_.PeekTag(); // peek ith bound type. |
- if (tag == kDynamicType) { |
- builder_.SkipDartType(); // read ith bound. |
- parameter.set_bound(Type::Handle(Z, I->object_store()->object_type())); |
- } else { |
- AbstractType& bound = |
- T.BuildTypeWithoutFinalization(); // read ith bound. |
- if (bound.IsMalformedOrMalbounded()) { |
- bound = I->object_store()->object_type(); |
- } |
- parameter.set_bound(bound); |
- } |
- } |
-} |
- |
-const Object& KernelReader::ClassForScriptAt(const Class& klass, |
- intptr_t source_uri_index) { |
- Script& correct_script = ScriptAt(source_uri_index); |
- if (klass.script() != correct_script.raw()) { |
- // Use cache for patch classes. This works best for in-order usages. |
- PatchClass& patch_class = PatchClass::ZoneHandle(Z); |
- patch_class ^= patch_classes_.At(source_uri_index); |
- if (patch_class.IsNull() || patch_class.origin_class() != klass.raw()) { |
- patch_class = PatchClass::New(klass, correct_script); |
- patch_classes_.SetAt(source_uri_index, patch_class); |
- } |
- return patch_class; |
- } |
- return klass; |
-} |
- |
-Script& KernelReader::ScriptAt(intptr_t index, StringIndex import_uri) { |
- Script& script = Script::ZoneHandle(Z); |
- script ^= scripts_.At(index); |
- if (script.IsNull()) { |
- // Create script with correct uri(s). |
- String& uri_string = builder_.SourceTableUriFor(index); |
- String& import_uri_string = |
- import_uri == -1 ? uri_string : H.DartString(import_uri, Heap::kOld); |
- script = Script::New(import_uri_string, uri_string, |
- builder_.GetSourceFor(index), RawScript::kKernelTag); |
- script.set_kernel_script_index(index); |
- script.set_kernel_string_offsets(H.string_offsets()); |
- script.set_kernel_string_data(H.string_data()); |
- script.set_kernel_canonical_names(H.canonical_names()); |
- scripts_.SetAt(index, script); |
- |
- script.set_line_starts(builder_.GetLineStartsFor(index)); |
- script.set_debug_positions(Array::Handle(Array::null())); |
- script.set_yield_positions(Array::Handle(Array::null())); |
- } |
- return script; |
-} |
- |
-void KernelReader::GenerateFieldAccessors(const Class& klass, |
- const Field& field, |
- FieldHelper* field_helper, |
- intptr_t field_offset) { |
- Tag tag = builder_.PeekTag(); |
- if (field_helper->IsStatic() && tag == kNothing) { |
- // Static fields without an initializer are implicitly initialized to null. |
- // We do not need a getter. |
- field.SetStaticValue(Instance::Handle(Z), true); |
- return; |
- } |
- if (tag == kSomething) { |
- SimpleExpressionConverter converter(&H, &builder_); |
- const bool has_simple_initializer = |
- converter.IsSimple(builder_.ReaderOffset() + 1); // ignore the tag. |
- if (field_helper->IsStatic()) { |
- // Static fields with initializers either have the static value set to the |
- // initializer value if it is simple enough or else set to an |
- // uninitialized sentinel. |
- if (has_simple_initializer) { |
- // We do not need a getter. |
- field.SetStaticValue(converter.SimpleValue(), true); |
- return; |
- } |
- // We do need a getter that evaluates the initializer if necessary. |
- field.SetStaticValue(Object::sentinel(), true); |
- } else if (has_simple_initializer) { |
- // Note: optimizer relies on DoubleInitialized bit in its field-unboxing |
- // heuristics. See JitOptimizer::VisitStoreInstanceField for more details. |
- field.RecordStore(converter.SimpleValue()); |
- if (!converter.SimpleValue().IsNull() && |
- converter.SimpleValue().IsDouble()) { |
- field.set_is_double_initialized(true); |
- } |
- } |
- } |
- |
- const String& getter_name = H.DartGetterName(field_helper->canonical_name_); |
- const Object& script_class = |
- ClassForScriptAt(klass, field_helper->source_uri_index_); |
- Function& getter = Function::ZoneHandle( |
- Z, |
- Function::New( |
- getter_name, |
- field_helper->IsStatic() ? RawFunction::kImplicitStaticFinalGetter |
- : RawFunction::kImplicitGetter, |
- field_helper->IsStatic(), |
- // The functions created by the parser have is_const for static fields |
- // that are const (not just final) and they have is_const for |
- // non-static |
- // fields that are final. |
- field_helper->IsStatic() ? field_helper->IsConst() |
- : field_helper->IsFinal(), |
- false, // is_abstract |
- false, // is_external |
- false, // is_native |
- script_class, field_helper->position_)); |
- functions_.Add(&getter); |
- getter.set_kernel_data(TypedData::Handle(Z, field.kernel_data())); |
- getter.set_end_token_pos(field_helper->end_position_); |
- getter.set_kernel_offset(field_offset); |
- getter.set_result_type(AbstractType::Handle(Z, field.type())); |
- getter.set_is_debuggable(false); |
- SetupFieldAccessorFunction(klass, getter); |
- |
- if (!field_helper->IsStatic() && !field_helper->IsFinal()) { |
- // Only static fields can be const. |
- ASSERT(!field_helper->IsConst()); |
- const String& setter_name = H.DartSetterName(field_helper->canonical_name_); |
- Function& setter = Function::ZoneHandle( |
- Z, Function::New(setter_name, RawFunction::kImplicitSetter, |
- false, // is_static |
- false, // is_const |
- false, // is_abstract |
- false, // is_external |
- false, // is_native |
- script_class, field_helper->position_)); |
- functions_.Add(&setter); |
- setter.set_kernel_data(TypedData::Handle(Z, field.kernel_data())); |
- setter.set_end_token_pos(field_helper->end_position_); |
- setter.set_kernel_offset(field_offset); |
- setter.set_result_type(Object::void_type()); |
- setter.set_is_debuggable(false); |
- SetupFieldAccessorFunction(klass, setter); |
- } |
-} |
- |
-void KernelReader::SetupFieldAccessorFunction(const Class& klass, |
- const Function& function) { |
- bool is_setter = function.IsImplicitSetterFunction(); |
- bool is_method = !function.IsStaticFunction(); |
- intptr_t parameter_count = (is_method ? 1 : 0) + (is_setter ? 1 : 0); |
- |
- function.SetNumOptionalParameters(0, false); |
- function.set_num_fixed_parameters(parameter_count); |
- function.set_parameter_types( |
- Array::Handle(Z, Array::New(parameter_count, Heap::kOld))); |
- function.set_parameter_names( |
- Array::Handle(Z, Array::New(parameter_count, Heap::kOld))); |
- |
- intptr_t pos = 0; |
- if (is_method) { |
- function.SetParameterTypeAt(pos, T.ReceiverType(klass)); |
- function.SetParameterNameAt(pos, Symbols::This()); |
- pos++; |
- } |
- if (is_setter) { |
- function.SetParameterTypeAt(pos, AbstractType::dynamic_type()); |
- function.SetParameterNameAt(pos, Symbols::Value()); |
- pos++; |
- } |
-} |
- |
-Library& KernelReader::LookupLibrary(NameIndex library) { |
- Library* handle = NULL; |
- if (!libraries_.Lookup(library, &handle)) { |
- const String& url = H.DartSymbol(H.CanonicalNameString(library)); |
- handle = &Library::Handle(Z, Library::LookupLibrary(thread_, url)); |
- if (handle->IsNull()) { |
- *handle = Library::New(url); |
- handle->Register(thread_); |
- } |
- ASSERT(!handle->IsNull()); |
- libraries_.Insert(library, handle); |
- } |
- return *handle; |
-} |
- |
-Class& KernelReader::LookupClass(NameIndex klass) { |
- Class* handle = NULL; |
- if (!classes_.Lookup(klass, &handle)) { |
- Library& library = LookupLibrary(H.CanonicalNameParent(klass)); |
- const String& name = H.DartClassName(klass); |
- handle = &Class::Handle(Z, library.LookupClass(name)); |
- if (handle->IsNull()) { |
- *handle = Class::New(library, name, Script::Handle(Z), |
- TokenPosition::kNoSource); |
- library.AddClass(*handle); |
- } |
- // Insert the class in the cache before calling ReadPreliminaryClass so |
- // we do not risk allocating the class again by calling LookupClass |
- // recursively from ReadPreliminaryClass for the same class. |
- classes_.Insert(klass, handle); |
- } |
- return *handle; |
-} |
- |
-RawFunction::Kind KernelReader::GetFunctionType( |
- ProcedureHelper::Kind procedure_kind) { |
- intptr_t lookuptable[] = { |
- RawFunction::kRegularFunction, // Procedure::kMethod |
- RawFunction::kGetterFunction, // Procedure::kGetter |
- RawFunction::kSetterFunction, // Procedure::kSetter |
- RawFunction::kRegularFunction, // Procedure::kOperator |
- RawFunction::kConstructor, // Procedure::kFactory |
- }; |
- intptr_t kind = static_cast<int>(procedure_kind); |
- ASSERT(0 <= kind && kind <= ProcedureHelper::kFactory); |
- return static_cast<RawFunction::Kind>(lookuptable[kind]); |
-} |
- |
-bool KernelReader::FieldHasFunctionLiteralInitializer(const Field& field, |
- TokenPosition* start, |
- TokenPosition* end) { |
- Zone* zone = Thread::Current()->zone(); |
- const Script& script = Script::Handle(zone, field.Script()); |
- |
- TranslationHelper translation_helper( |
- Thread::Current(), script.kernel_string_offsets(), |
- script.kernel_string_data(), script.kernel_canonical_names()); |
- |
- StreamingFlowGraphBuilder builder( |
- &translation_helper, zone, field.kernel_offset(), |
- TypedData::Handle(zone, field.kernel_data())); |
- kernel::FieldHelper field_helper(&builder); |
- field_helper.ReadUntilExcluding(kernel::FieldHelper::kEnd, true); |
- return field_helper.FieldHasFunctionLiteralInitializer(start, end); |
-} |
- |
-ParsedFunction* ParseStaticFieldInitializer(Zone* zone, const Field& field) { |
- Thread* thread = Thread::Current(); |
- |
- String& init_name = String::Handle(zone, field.name()); |
- init_name = Symbols::FromConcat(thread, Symbols::InitPrefix(), init_name); |
- |
- // Create a static initializer. |
- const Object& owner = Object::Handle(field.RawOwner()); |
- const Function& initializer_fun = Function::ZoneHandle( |
- zone, Function::New(init_name, RawFunction::kImplicitStaticFinalGetter, |
- true, // is_static |
- false, // is_const |
- false, // is_abstract |
- false, // is_external |
- false, // is_native |
- owner, TokenPosition::kNoSource)); |
- initializer_fun.set_kernel_data(TypedData::Handle(zone, field.kernel_data())); |
- initializer_fun.set_kernel_offset(field.kernel_offset()); |
- initializer_fun.set_result_type(AbstractType::Handle(zone, field.type())); |
- initializer_fun.set_is_debuggable(false); |
- initializer_fun.set_is_reflectable(false); |
- initializer_fun.set_is_inlinable(false); |
- return new (zone) ParsedFunction(thread, initializer_fun); |
-} |
- |
-} // namespace kernel |
-} // namespace dart |
-#endif // !defined(DART_PRECOMPILED_RUNTIME) |