| // 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 "lib/mirrors.h" |
| |
| #include "lib/invocation_mirror.h" |
| #include "vm/bootstrap_natives.h" |
| #include "vm/class_finalizer.h" |
| #include "vm/dart_api_impl.h" |
| #include "vm/dart_entry.h" |
| #include "vm/exceptions.h" |
| #include "vm/kernel.h" |
| #include "vm/object_store.h" |
| #include "vm/parser.h" |
| #include "vm/port.h" |
| #include "vm/resolver.h" |
| #include "vm/symbols.h" |
| |
| namespace dart { |
| |
| #if !defined(DART_PRECOMPILED_RUNTIME) |
| |
| #define RETURN_OR_PROPAGATE(expr) \ |
| ObjectPtr result = expr; \ |
| if (IsErrorClassId(result->GetClassId())) { \ |
| Exceptions::PropagateError(Error::Handle(Error::RawCast(result))); \ |
| } \ |
| return result; |
| |
| static InstancePtr CreateMirror(const String& mirror_class_name, |
| const Array& constructor_arguments) { |
| const Library& mirrors_lib = Library::Handle(Library::MirrorsLibrary()); |
| const String& constructor_name = Symbols::DotUnder(); |
| |
| const Object& result = Object::Handle(DartLibraryCalls::InstanceCreate( |
| mirrors_lib, mirror_class_name, constructor_name, constructor_arguments)); |
| if (result.IsError()) { |
| Exceptions::PropagateError(Error::Cast(result)); |
| } |
| return Instance::Cast(result).ptr(); |
| } |
| |
| // Conventions: |
| // * For throwing a NSM in a class klass we use its runtime type as receiver, |
| // i.e., klass.RareType(). |
| // * For throwing a NSM in a library, we just pass the null instance as |
| // receiver. |
| static void ThrowNoSuchMethod(const Instance& receiver, |
| const String& function_name, |
| const Array& arguments, |
| const Array& argument_names, |
| const InvocationMirror::Level level, |
| const InvocationMirror::Kind kind) { |
| const Smi& invocation_type = |
| Smi::Handle(Smi::New(InvocationMirror::EncodeType(level, kind))); |
| |
| const Array& args = Array::Handle(Array::New(7)); |
| args.SetAt(0, receiver); |
| args.SetAt(1, function_name); |
| args.SetAt(2, invocation_type); |
| args.SetAt(3, Object::smi_zero()); // Type arguments length. |
| args.SetAt(4, Object::null_type_arguments()); |
| args.SetAt(5, arguments); |
| args.SetAt(6, argument_names); |
| |
| const Library& libcore = Library::Handle(Library::CoreLibrary()); |
| const Class& cls = |
| Class::Handle(libcore.LookupClass(Symbols::NoSuchMethodError())); |
| const auto& error = cls.EnsureIsFinalized(Thread::Current()); |
| ASSERT(error == Error::null()); |
| const Function& throwNew = |
| Function::Handle(cls.LookupFunctionAllowPrivate(Symbols::ThrowNew())); |
| const Object& result = |
| Object::Handle(DartEntry::InvokeFunction(throwNew, args)); |
| ASSERT(result.IsError()); |
| Exceptions::PropagateError(Error::Cast(result)); |
| UNREACHABLE(); |
| } |
| |
| static void EnsureConstructorsAreCompiled(const Function& func) { |
| // Only generative constructors can have initializing formals. |
| if (!func.IsGenerativeConstructor()) return; |
| |
| Thread* thread = Thread::Current(); |
| Zone* zone = thread->zone(); |
| const Class& cls = Class::Handle(zone, func.Owner()); |
| const Error& error = Error::Handle(zone, cls.EnsureIsFinalized(thread)); |
| if (!error.IsNull()) { |
| Exceptions::PropagateError(error); |
| UNREACHABLE(); |
| } |
| func.EnsureHasCode(); |
| } |
| |
| static InstancePtr CreateParameterMirrorList(const Function& func, |
| const FunctionType& signature, |
| const Instance& owner_mirror) { |
| Thread* const T = Thread::Current(); |
| Zone* const Z = T->zone(); |
| HANDLESCOPE(T); |
| const intptr_t implicit_param_count = signature.num_implicit_parameters(); |
| const intptr_t non_implicit_param_count = |
| signature.NumParameters() - implicit_param_count; |
| const intptr_t index_of_first_optional_param = |
| non_implicit_param_count - signature.NumOptionalParameters(); |
| const intptr_t index_of_first_named_param = |
| non_implicit_param_count - signature.NumOptionalNamedParameters(); |
| const Array& results = Array::Handle(Z, Array::New(non_implicit_param_count)); |
| const Array& args = Array::Handle(Z, Array::New(9)); |
| |
| Smi& pos = Smi::Handle(Z); |
| String& name = String::Handle(Z); |
| Instance& param = Instance::Handle(Z); |
| Bool& is_final = Bool::Handle(Z); |
| Object& default_value = Object::Handle(Z); |
| Object& metadata = Object::Handle(Z); |
| |
| // We force compilation of constructors to ensure the types of initializing |
| // formals have been corrected. We do not force the compilation of all types |
| // of functions because some have no body, e.g. signature functions. |
| if (!func.IsNull()) { |
| EnsureConstructorsAreCompiled(func); |
| } |
| |
| bool has_extra_parameter_info = true; |
| if (non_implicit_param_count == 0) { |
| has_extra_parameter_info = false; |
| } |
| if (func.IsNull() || func.IsImplicitConstructor()) { |
| // This covers the default constructor and forwarding constructors. |
| has_extra_parameter_info = false; |
| } |
| Array& param_descriptor = Array::Handle(); |
| if (has_extra_parameter_info) { |
| // Reparse the function for the following information: |
| // * The default value of a parameter. |
| // * Whether a parameters has been declared as final. |
| // * Any metadata associated with the parameter. |
| Object& result = Object::Handle(kernel::BuildParameterDescriptor(func)); |
| if (result.IsError()) { |
| Exceptions::PropagateError(Error::Cast(result)); |
| UNREACHABLE(); |
| } |
| param_descriptor ^= result.ptr(); |
| ASSERT(param_descriptor.Length() == |
| (Parser::kParameterEntrySize * non_implicit_param_count)); |
| } |
| |
| args.SetAt(0, MirrorReference::Handle(MirrorReference::New(signature))); |
| args.SetAt(2, owner_mirror); |
| |
| if (!has_extra_parameter_info) { |
| is_final = Bool::True().ptr(); |
| default_value = Object::null(); |
| metadata = Object::null(); |
| } |
| |
| for (intptr_t i = 0; i < non_implicit_param_count; i++) { |
| pos = Smi::New(i); |
| if (i >= index_of_first_named_param) { |
| // Named parameters are stored in the signature. |
| name = signature.ParameterNameAt(implicit_param_count + i); |
| } else if (!func.IsNull()) { |
| // Positional parameters are stored in the function. |
| name = func.ParameterNameAt(implicit_param_count + i); |
| } else { |
| // We were not given a function, only the type, so create placeholder |
| // names for the positional parameters. |
| const char* const placeholder = OS::SCreate(Z, ":param%" Pd "", i); |
| name = String::New(placeholder); |
| } |
| if (has_extra_parameter_info) { |
| is_final ^= param_descriptor.At(i * Parser::kParameterEntrySize + |
| Parser::kParameterIsFinalOffset); |
| default_value = param_descriptor.At(i * Parser::kParameterEntrySize + |
| Parser::kParameterDefaultValueOffset); |
| metadata = param_descriptor.At(i * Parser::kParameterEntrySize + |
| Parser::kParameterMetadataOffset); |
| } |
| ASSERT(default_value.IsNull() || default_value.IsInstance()); |
| |
| // Arguments 0 (referent) and 2 (owner) are the same for all parameters. See |
| // above. |
| args.SetAt(1, name); |
| args.SetAt(3, pos); |
| args.SetAt(4, Bool::Get(i >= index_of_first_optional_param)); |
| args.SetAt(5, Bool::Get(i >= index_of_first_named_param)); |
| args.SetAt(6, is_final); |
| args.SetAt(7, default_value); |
| args.SetAt(8, metadata); |
| param = CreateMirror(Symbols::_ParameterMirror(), args); |
| results.SetAt(i, param); |
| } |
| results.MakeImmutable(); |
| return results.ptr(); |
| } |
| |
| static InstancePtr CreateTypeVariableMirror(const TypeParameter& param, |
| const Instance& owner_mirror) { |
| const Array& args = Array::Handle(Array::New(3)); |
| args.SetAt(0, param); |
| args.SetAt(1, String::Handle(param.UserVisibleName())); |
| args.SetAt(2, owner_mirror); |
| return CreateMirror(Symbols::_TypeVariableMirror(), args); |
| } |
| |
| // We create a list in native code and let Dart code create the type mirror |
| // object and the ordered map. |
| static InstancePtr CreateTypeVariableList(const Class& cls) { |
| const intptr_t num_type_params = cls.NumTypeParameters(); |
| if (num_type_params == 0) { |
| return Object::empty_array().ptr(); |
| } |
| const Array& result = Array::Handle(Array::New(num_type_params * 2)); |
| TypeParameter& type = TypeParameter::Handle(); |
| String& name = String::Handle(); |
| for (intptr_t i = 0; i < num_type_params; i++) { |
| type = cls.TypeParameterAt(i, Nullability::kNonNullable); |
| ASSERT(type.IsFinalized()); |
| name = type.UserVisibleName(); |
| result.SetAt(2 * i, name); |
| result.SetAt(2 * i + 1, type); |
| } |
| return result.ptr(); |
| } |
| |
| static InstancePtr CreateFunctionTypeMirror(const AbstractType& type) { |
| ASSERT(type.IsFunctionType()); |
| const Class& closure_class = |
| Class::Handle(IsolateGroup::Current()->object_store()->closure_class()); |
| const FunctionType& sig = FunctionType::Cast(type); |
| const Array& args = Array::Handle(Array::New(3)); |
| args.SetAt(0, MirrorReference::Handle(MirrorReference::New(closure_class))); |
| args.SetAt(1, MirrorReference::Handle(MirrorReference::New(sig))); |
| args.SetAt(2, type); |
| return CreateMirror(Symbols::_FunctionTypeMirror(), args); |
| } |
| |
| static InstancePtr CreateMethodMirror(const Function& func, |
| const Instance& owner_mirror, |
| const AbstractType& instantiator) { |
| const Array& args = Array::Handle(Array::New(6)); |
| args.SetAt(0, MirrorReference::Handle(MirrorReference::New(func))); |
| |
| String& name = String::Handle(func.name()); |
| name = String::ScrubNameRetainPrivate( |
| name, func.is_extension_member() || func.is_extension_type_member()); |
| args.SetAt(1, name); |
| args.SetAt(2, owner_mirror); |
| args.SetAt(3, instantiator); |
| args.SetAt(4, Bool::Get(func.is_static())); |
| |
| intptr_t kind_flags = 0; |
| kind_flags |= |
| (static_cast<intptr_t>(func.is_abstract()) << Mirrors::kAbstract); |
| kind_flags |= |
| (static_cast<intptr_t>(func.IsGetterFunction()) << Mirrors::kGetter); |
| kind_flags |= |
| (static_cast<intptr_t>(func.IsSetterFunction()) << Mirrors::kSetter); |
| bool is_ctor = (func.kind() == UntaggedFunction::kConstructor); |
| kind_flags |= (static_cast<intptr_t>(is_ctor) << Mirrors::kConstructor); |
| kind_flags |= (static_cast<intptr_t>(is_ctor && func.is_const()) |
| << Mirrors::kConstCtor); |
| kind_flags |= |
| (static_cast<intptr_t>(is_ctor && func.IsGenerativeConstructor()) |
| << Mirrors::kGenerativeCtor); |
| kind_flags |= (static_cast<intptr_t>(false) << Mirrors::kRedirectingCtor); |
| kind_flags |= (static_cast<intptr_t>(is_ctor && func.IsFactory()) |
| << Mirrors::kFactoryCtor); |
| kind_flags |= |
| (static_cast<intptr_t>(func.is_external()) << Mirrors::kExternal); |
| bool is_synthetic = func.is_synthetic(); |
| kind_flags |= (static_cast<intptr_t>(is_synthetic) << Mirrors::kSynthetic); |
| kind_flags |= (static_cast<intptr_t>(func.is_extension_member()) |
| << Mirrors::kExtensionMember); |
| kind_flags |= (static_cast<intptr_t>(func.is_extension_type_member()) |
| << Mirrors::kExtensionTypeMember); |
| args.SetAt(5, Smi::Handle(Smi::New(kind_flags))); |
| |
| return CreateMirror(Symbols::_MethodMirror(), args); |
| } |
| |
| static InstancePtr CreateVariableMirror(const Field& field, |
| const Instance& owner_mirror) { |
| const MirrorReference& field_ref = |
| MirrorReference::Handle(MirrorReference::New(field)); |
| |
| const String& name = String::Handle(field.name()); |
| |
| const Array& args = Array::Handle(Array::New(9)); |
| args.SetAt(0, field_ref); |
| args.SetAt(1, name); |
| args.SetAt(2, owner_mirror); |
| args.SetAt(3, Object::null_instance()); // Null for type. |
| args.SetAt(4, Bool::Get(field.is_static())); |
| args.SetAt(5, Bool::Get(field.is_final())); |
| args.SetAt(6, Bool::Get(field.is_const())); |
| args.SetAt(7, Bool::Get(field.is_extension_member())); |
| args.SetAt(8, Bool::Get(field.is_extension_type_member())); |
| |
| return CreateMirror(Symbols::_VariableMirror(), args); |
| } |
| |
| static InstancePtr CreateClassMirror(const Class& cls, |
| const AbstractType& type, |
| const Bool& is_declaration, |
| const Instance& owner_mirror) { |
| ASSERT(!cls.IsDynamicClass()); |
| ASSERT(!cls.IsVoidClass()); |
| ASSERT(!cls.IsNeverClass()); |
| ASSERT(!type.IsNull()); |
| ASSERT(type.IsFinalized()); |
| ASSERT(type.IsCanonical()); |
| const Array& args = Array::Handle(Array::New(9)); |
| args.SetAt(0, MirrorReference::Handle(MirrorReference::New(cls))); |
| args.SetAt(1, type); |
| args.SetAt(2, String::Handle(cls.Name())); |
| args.SetAt(3, owner_mirror); |
| args.SetAt(4, Bool::Get(cls.is_abstract())); |
| args.SetAt(5, Bool::Get(cls.IsGeneric())); |
| args.SetAt(6, Bool::Get(cls.is_transformed_mixin_application())); |
| args.SetAt(7, cls.NumTypeParameters() == 0 ? Bool::False() : is_declaration); |
| args.SetAt(8, Bool::Get(cls.is_enum_class())); |
| return CreateMirror(Symbols::_ClassMirror(), args); |
| } |
| |
| static bool IsCensoredLibrary(const String& url) { |
| static const char* const censored_libraries[] = { |
| "dart:_builtin", |
| "dart:_vmservice", |
| "dart:vmservice_io", |
| }; |
| for (const char* censored_library : censored_libraries) { |
| if (url.Equals(censored_library)) { |
| return true; |
| } |
| } |
| if (!Api::IsFfiEnabled() && url.Equals(Symbols::DartFfi())) { |
| return true; |
| } |
| return false; |
| } |
| |
| static InstancePtr CreateLibraryMirror(Thread* thread, const Library& lib) { |
| Zone* zone = thread->zone(); |
| ASSERT(!lib.IsNull()); |
| const Array& args = Array::Handle(zone, Array::New(3)); |
| args.SetAt(0, MirrorReference::Handle(zone, MirrorReference::New(lib))); |
| String& str = String::Handle(zone); |
| str = lib.name(); |
| args.SetAt(1, str); |
| str = lib.url(); |
| if (IsCensoredLibrary(str)) { |
| // Censored library (grumble). |
| return Instance::null(); |
| } |
| args.SetAt(2, str); |
| return CreateMirror(Symbols::_LibraryMirror(), args); |
| } |
| |
| static InstancePtr CreateCombinatorMirror(const Object& identifiers, |
| bool is_show) { |
| const Array& args = Array::Handle(Array::New(2)); |
| args.SetAt(0, identifiers); |
| args.SetAt(1, Bool::Get(is_show)); |
| return CreateMirror(Symbols::_CombinatorMirror(), args); |
| } |
| |
| static InstancePtr CreateLibraryDependencyMirror(Thread* thread, |
| const Instance& importer, |
| const Library& importee, |
| const Array& show_names, |
| const Array& hide_names, |
| const Object& metadata, |
| const LibraryPrefix& prefix, |
| const String& prefix_name, |
| const bool is_import, |
| const bool is_deferred) { |
| const Instance& importee_mirror = |
| Instance::Handle(CreateLibraryMirror(thread, importee)); |
| if (importee_mirror.IsNull()) { |
| // Imported library is censored: censor the import. |
| return Instance::null(); |
| } |
| |
| intptr_t n = show_names.IsNull() ? 0 : show_names.Length(); |
| intptr_t m = hide_names.IsNull() ? 0 : hide_names.Length(); |
| const Array& combinators = Array::Handle(Array::New(n + m)); |
| Object& t = Object::Handle(); |
| intptr_t i = 0; |
| for (intptr_t j = 0; j < n; j++) { |
| t = show_names.At(j); |
| t = CreateCombinatorMirror(t, true); |
| combinators.SetAt(i++, t); |
| } |
| for (intptr_t j = 0; j < m; j++) { |
| t = hide_names.At(j); |
| t = CreateCombinatorMirror(t, false); |
| combinators.SetAt(i++, t); |
| } |
| |
| const Array& args = Array::Handle(Array::New(7)); |
| args.SetAt(0, importer); |
| if (importee.Loaded() || prefix.IsNull()) { |
| // A native extension is never "loaded" by the embedder. Use the fact that |
| // it doesn't have an prefix where asa deferred import does to distinguish |
| // it from a deferred import. It will appear like an empty library. |
| args.SetAt(1, importee_mirror); |
| } else { |
| args.SetAt(1, prefix); |
| } |
| args.SetAt(2, combinators); |
| args.SetAt(3, prefix_name); |
| args.SetAt(4, Bool::Get(is_import)); |
| args.SetAt(5, Bool::Get(is_deferred)); |
| args.SetAt(6, metadata); |
| return CreateMirror(Symbols::_LibraryDependencyMirror(), args); |
| } |
| |
| static InstancePtr CreateLibraryDependencyMirror(Thread* thread, |
| const Instance& importer, |
| const Namespace& ns, |
| const LibraryPrefix& prefix, |
| const bool is_import, |
| const bool is_deferred) { |
| const Library& importee = Library::Handle(ns.target()); |
| const Array& show_names = Array::Handle(ns.show_names()); |
| const Array& hide_names = Array::Handle(ns.hide_names()); |
| |
| const Library& owner = Library::Handle(ns.owner()); |
| Object& metadata = Object::Handle(owner.GetMetadata(ns)); |
| if (metadata.IsError()) { |
| Exceptions::PropagateError(Error::Cast(metadata)); |
| UNREACHABLE(); |
| } |
| |
| auto& prefix_name = String::Handle(); |
| if (!prefix.IsNull()) { |
| prefix_name = prefix.name(); |
| } |
| |
| return CreateLibraryDependencyMirror(thread, importer, importee, show_names, |
| hide_names, metadata, prefix, |
| prefix_name, is_import, is_deferred); |
| } |
| |
| DEFINE_NATIVE_ENTRY(LibraryMirror_fromPrefix, 0, 1) { |
| GET_NON_NULL_NATIVE_ARGUMENT(LibraryPrefix, prefix, |
| arguments->NativeArgAt(0)); |
| const Library& deferred_lib = Library::Handle(prefix.GetLibrary(0)); |
| if (!deferred_lib.Loaded()) { |
| return Instance::null(); |
| } |
| return CreateLibraryMirror(thread, deferred_lib); |
| } |
| |
| DEFINE_NATIVE_ENTRY(LibraryMirror_libraryDependencies, 0, 2) { |
| GET_NON_NULL_NATIVE_ARGUMENT(Instance, lib_mirror, arguments->NativeArgAt(0)); |
| GET_NON_NULL_NATIVE_ARGUMENT(MirrorReference, ref, arguments->NativeArgAt(1)); |
| const Library& lib = Library::Handle(ref.GetLibraryReferent()); |
| |
| Array& ports = Array::Handle(); |
| Namespace& ns = Namespace::Handle(); |
| Instance& dep = Instance::Handle(); |
| LibraryPrefix& prefix = LibraryPrefix::Handle(); |
| GrowableObjectArray& deps = |
| GrowableObjectArray::Handle(GrowableObjectArray::New()); |
| |
| // Unprefixed imports. |
| ports = lib.imports(); |
| for (intptr_t i = 0; i < ports.Length(); i++) { |
| ns ^= ports.At(i); |
| if (!ns.IsNull()) { |
| dep = CreateLibraryDependencyMirror(thread, lib_mirror, ns, prefix, true, |
| false); |
| if (!dep.IsNull()) { |
| deps.Add(dep); |
| } |
| } |
| } |
| |
| // Exports. |
| ports = lib.exports(); |
| for (intptr_t i = 0; i < ports.Length(); i++) { |
| ns ^= ports.At(i); |
| dep = CreateLibraryDependencyMirror(thread, lib_mirror, ns, prefix, false, |
| false); |
| if (!dep.IsNull()) { |
| deps.Add(dep); |
| } |
| } |
| |
| // Prefixed imports. |
| DictionaryIterator entries(lib); |
| Object& entry = Object::Handle(); |
| while (entries.HasNext()) { |
| entry = entries.GetNext(); |
| if (entry.IsLibraryPrefix()) { |
| prefix ^= entry.ptr(); |
| ports = prefix.imports(); |
| for (intptr_t i = 0; i < ports.Length(); i++) { |
| ns ^= ports.At(i); |
| if (!ns.IsNull()) { |
| dep = CreateLibraryDependencyMirror(thread, lib_mirror, ns, prefix, |
| true, prefix.is_deferred_load()); |
| if (!dep.IsNull()) { |
| deps.Add(dep); |
| } |
| } |
| } |
| } |
| } |
| |
| return deps.ptr(); |
| } |
| |
| static InstancePtr CreateTypeMirror(const AbstractType& type) { |
| ASSERT(type.IsFinalized()); |
| ASSERT(type.IsCanonical()); |
| |
| if (type.IsFunctionType()) { |
| return CreateFunctionTypeMirror(type); |
| } |
| if (type.IsRecordType()) { |
| const Class& cls = |
| Class::Handle(IsolateGroup::Current()->object_store()->record_class()); |
| return CreateClassMirror(cls, AbstractType::Handle(cls.DeclarationType()), |
| Bool::False(), Object::null_instance()); |
| } |
| if (type.HasTypeClass()) { |
| const Class& cls = Class::Handle(type.type_class()); |
| // Handle void and dynamic types. |
| if (cls.IsVoidClass()) { |
| Array& args = Array::Handle(Array::New(1)); |
| args.SetAt(0, Symbols::Void()); |
| return CreateMirror(Symbols::_SpecialTypeMirror(), args); |
| } else if (cls.IsDynamicClass()) { |
| Array& args = Array::Handle(Array::New(1)); |
| args.SetAt(0, Symbols::Dynamic()); |
| return CreateMirror(Symbols::_SpecialTypeMirror(), args); |
| } else if (cls.IsNeverClass()) { |
| Array& args = Array::Handle(Array::New(1)); |
| args.SetAt(0, Symbols::Never()); |
| return CreateMirror(Symbols::_SpecialTypeMirror(), args); |
| } |
| // TODO(regis): Until mirrors reflect nullability, force kNonNullable, |
| // except for Null type, which should remain nullable. |
| if (!type.IsNullType()) { |
| Type& legacy_type = Type::Handle(Type::Cast(type).ToNullability( |
| Nullability::kNonNullable, Heap::kOld)); |
| legacy_type ^= legacy_type.Canonicalize(Thread::Current()); |
| return CreateClassMirror(cls, legacy_type, Bool::False(), |
| Object::null_instance()); |
| } |
| return CreateClassMirror(cls, type, Bool::False(), Object::null_instance()); |
| } else if (type.IsTypeParameter()) { |
| // TODO(regis): Until mirrors reflect nullability, force kNonNullable. |
| TypeParameter& legacy_type = |
| TypeParameter::Handle(TypeParameter::Cast(type).ToNullability( |
| Nullability::kNonNullable, Heap::kOld)); |
| legacy_type ^= legacy_type.Canonicalize(Thread::Current()); |
| return CreateTypeVariableMirror(legacy_type, Object::null_instance()); |
| } |
| UNREACHABLE(); |
| return Instance::null(); |
| } |
| |
| static InstancePtr CreateIsolateMirror() { |
| Thread* thread = Thread::Current(); |
| Isolate* isolate = thread->isolate(); |
| const String& debug_name = String::Handle(String::New(isolate->name())); |
| const Library& root_library = Library::Handle( |
| thread->zone(), isolate->group()->object_store()->root_library()); |
| const Instance& root_library_mirror = |
| Instance::Handle(CreateLibraryMirror(thread, root_library)); |
| |
| const Array& args = Array::Handle(Array::New(2)); |
| args.SetAt(0, debug_name); |
| args.SetAt(1, root_library_mirror); |
| return CreateMirror(Symbols::_IsolateMirror(), args); |
| } |
| |
| static void VerifyMethodKindShifts() { |
| #ifdef DEBUG |
| Thread* thread = Thread::Current(); |
| Zone* zone = thread->zone(); |
| const Library& lib = Library::Handle(zone, Library::MirrorsLibrary()); |
| const Class& cls = Class::Handle( |
| zone, lib.LookupClassAllowPrivate(Symbols::_MethodMirror())); |
| Error& error = Error::Handle(zone); |
| error ^= cls.EnsureIsFinalized(thread); |
| ASSERT(error.IsNull()); |
| |
| Field& field = Field::Handle(zone); |
| Smi& value = Smi::Handle(zone); |
| String& fname = String::Handle(zone); |
| |
| #define CHECK_KIND_SHIFT(name) \ |
| fname ^= String::New(#name); \ |
| field = cls.LookupField(fname); \ |
| ASSERT(!field.IsNull()); \ |
| if (field.IsUninitialized()) { \ |
| error ^= field.InitializeStatic(); \ |
| ASSERT(error.IsNull()); \ |
| } \ |
| value ^= field.StaticValue(); \ |
| ASSERT(value.Value() == Mirrors::name); |
| MIRRORS_KIND_SHIFT_LIST(CHECK_KIND_SHIFT) |
| #undef CHECK_KIND_SHIFT |
| #endif |
| } |
| |
| static AbstractTypePtr InstantiateType(const AbstractType& type, |
| const AbstractType& instantiator) { |
| // Generic function type parameters are not reified, but mapped to dynamic, |
| // i.e. all function type parameters are free with a null vector. |
| ASSERT(type.IsFinalized()); |
| ASSERT(type.IsCanonical()); |
| Thread* thread = Thread::Current(); |
| |
| if (type.IsInstantiated()) { |
| return type.Canonicalize(thread); |
| } |
| TypeArguments& instantiator_type_args = TypeArguments::Handle(); |
| if (!instantiator.IsNull() && instantiator.IsType()) { |
| ASSERT(instantiator.IsFinalized()); |
| if (instantiator.type_class_id() == kInstanceCid) { |
| // Handle types created in ClosureMirror_function. |
| instantiator_type_args = instantiator.arguments(); |
| } else { |
| instantiator_type_args = |
| Type::Cast(instantiator) |
| .GetInstanceTypeArguments(thread, /*canonicalize=*/false); |
| } |
| } |
| AbstractType& result = AbstractType::Handle(type.InstantiateFrom( |
| instantiator_type_args, Object::null_type_arguments(), kAllFree, |
| Heap::kOld)); |
| ASSERT(result.IsFinalized()); |
| return result.Canonicalize(thread); |
| } |
| |
| DEFINE_NATIVE_ENTRY(MirrorSystem_libraries, 0, 0) { |
| const GrowableObjectArray& libraries = GrowableObjectArray::Handle( |
| zone, isolate->group()->object_store()->libraries()); |
| |
| const intptr_t num_libraries = libraries.Length(); |
| const GrowableObjectArray& library_mirrors = GrowableObjectArray::Handle( |
| zone, GrowableObjectArray::New(num_libraries)); |
| Library& library = Library::Handle(zone); |
| Instance& library_mirror = Instance::Handle(zone); |
| |
| for (int i = 0; i < num_libraries; i++) { |
| library ^= libraries.At(i); |
| library_mirror = CreateLibraryMirror(thread, library); |
| if (!library_mirror.IsNull() && library.Loaded()) { |
| library_mirrors.Add(library_mirror); |
| } |
| } |
| return library_mirrors.ptr(); |
| } |
| |
| DEFINE_NATIVE_ENTRY(MirrorSystem_isolate, 0, 0) { |
| VerifyMethodKindShifts(); |
| |
| return CreateIsolateMirror(); |
| } |
| |
| static void ThrowLanguageError(const char* message) { |
| const Error& error = |
| Error::Handle(LanguageError::New(String::Handle(String::New(message)))); |
| Exceptions::PropagateError(error); |
| } |
| |
| DEFINE_NATIVE_ENTRY(IsolateMirror_loadUri, 0, 1) { |
| GET_NON_NULL_NATIVE_ARGUMENT(String, uri, arguments->NativeArgAt(0)); |
| |
| if (!isolate->group()->HasTagHandler()) { |
| ThrowLanguageError("no library handler registered"); |
| } |
| |
| NoReloadScope no_reload(thread); |
| |
| // Canonicalize library URI. |
| String& canonical_uri = String::Handle(zone); |
| if (uri.StartsWith(Symbols::DartScheme())) { |
| canonical_uri = uri.ptr(); |
| } else { |
| isolate->BlockClassFinalization(); |
| const Object& result = Object::Handle( |
| zone, isolate->group()->CallTagHandler( |
| Dart_kCanonicalizeUrl, |
| Library::Handle( |
| zone, isolate->group()->object_store()->root_library()), |
| uri)); |
| isolate->UnblockClassFinalization(); |
| if (result.IsError()) { |
| if (result.IsLanguageError()) { |
| Exceptions::ThrowCompileTimeError(LanguageError::Cast(result)); |
| } |
| Exceptions::PropagateError(Error::Cast(result)); |
| } else if (!result.IsString()) { |
| ThrowLanguageError("library handler failed URI canonicalization"); |
| } |
| |
| canonical_uri ^= result.ptr(); |
| } |
| |
| // Return the existing library if it has already been loaded. |
| Library& library = |
| Library::Handle(zone, Library::LookupLibrary(thread, canonical_uri)); |
| if (!library.IsNull()) { |
| return CreateLibraryMirror(thread, library); |
| } |
| |
| // Request the embedder to load the library. |
| isolate->BlockClassFinalization(); |
| Object& result = Object::Handle( |
| zone, isolate->group()->CallTagHandler( |
| Dart_kImportTag, |
| Library::Handle( |
| zone, isolate->group()->object_store()->root_library()), |
| canonical_uri)); |
| isolate->UnblockClassFinalization(); |
| if (result.IsError()) { |
| if (result.IsLanguageError()) { |
| Exceptions::ThrowCompileTimeError(LanguageError::Cast(result)); |
| } |
| Exceptions::PropagateError(Error::Cast(result)); |
| } |
| |
| // This code assumes a synchronous tag handler (which dart::bin and tonic |
| // provide). Strictly though we should complete a future in response to |
| // Dart_FinalizeLoading. |
| |
| if (!ClassFinalizer::ProcessPendingClasses()) { |
| Exceptions::PropagateError(Error::Handle(thread->sticky_error())); |
| } |
| |
| // Prefer the tag handler's idea of which library is represented by the URI. |
| if (result.IsLibrary()) { |
| return CreateLibraryMirror(thread, Library::Cast(result)); |
| } |
| |
| if (result.IsNull()) { |
| library = Library::LookupLibrary(thread, canonical_uri); |
| if (!library.IsNull()) { |
| return CreateLibraryMirror(thread, library); |
| } |
| } |
| |
| FATAL("Non-library from tag handler"); |
| } |
| |
| DEFINE_NATIVE_ENTRY(Mirrors_makeLocalClassMirror, 0, 1) { |
| GET_NON_NULL_NATIVE_ARGUMENT(AbstractType, type, arguments->NativeArgAt(0)); |
| ASSERT(type.IsFinalized()); |
| const Class& cls = Class::Handle( |
| type.IsFunctionType() |
| ? IsolateGroup::Current()->object_store()->closure_class() |
| : type.type_class()); |
| ASSERT(!cls.IsNull()); |
| if (cls.IsDynamicClass() || cls.IsVoidClass() || cls.IsNeverClass()) { |
| Exceptions::ThrowArgumentError(type); |
| UNREACHABLE(); |
| } |
| return CreateClassMirror(cls, AbstractType::Handle(cls.DeclarationType()), |
| Bool::True(), // is_declaration |
| Object::null_instance()); |
| } |
| |
| DEFINE_NATIVE_ENTRY(Mirrors_makeLocalTypeMirror, 0, 1) { |
| GET_NON_NULL_NATIVE_ARGUMENT(AbstractType, type, arguments->NativeArgAt(0)); |
| return CreateTypeMirror(type); |
| } |
| |
| DEFINE_NATIVE_ENTRY(Mirrors_instantiateGenericType, 0, 2) { |
| GET_NON_NULL_NATIVE_ARGUMENT(AbstractType, type, arguments->NativeArgAt(0)); |
| GET_NON_NULL_NATIVE_ARGUMENT(Array, args, arguments->NativeArgAt(1)); |
| |
| const Class& clz = Class::Handle( |
| type.IsFunctionType() |
| ? IsolateGroup::Current()->object_store()->closure_class() |
| : type.type_class()); |
| if (!clz.IsGeneric()) { |
| const Array& error_args = Array::Handle(Array::New(3)); |
| error_args.SetAt(0, type); |
| error_args.SetAt(1, String::Handle(String::New("key"))); |
| error_args.SetAt(2, String::Handle(String::New( |
| "Type must be a generic class or function."))); |
| Exceptions::ThrowByType(Exceptions::kArgumentValue, error_args); |
| UNREACHABLE(); |
| } |
| if (clz.NumTypeParameters() != args.Length()) { |
| const Array& error_args = Array::Handle(Array::New(3)); |
| error_args.SetAt(0, args); |
| error_args.SetAt(1, String::Handle(String::New("typeArguments"))); |
| error_args.SetAt(2, String::Handle(String::New( |
| "Number of type arguments does not match."))); |
| Exceptions::ThrowByType(Exceptions::kArgumentValue, error_args); |
| UNREACHABLE(); |
| } |
| |
| intptr_t num_expected_type_arguments = args.Length(); |
| TypeArguments& type_args_obj = TypeArguments::Handle(); |
| type_args_obj = TypeArguments::New(num_expected_type_arguments); |
| AbstractType& type_arg = AbstractType::Handle(); |
| Instance& instance = Instance::Handle(); |
| for (intptr_t i = 0; i < args.Length(); i++) { |
| instance ^= args.At(i); |
| if (!instance.IsType()) { |
| const Array& error_args = Array::Handle(Array::New(3)); |
| error_args.SetAt(0, args); |
| error_args.SetAt(1, String::Handle(String::New("typeArguments"))); |
| error_args.SetAt(2, String::Handle(String::New( |
| "Type arguments must be instances of Type."))); |
| Exceptions::ThrowByType(Exceptions::kArgumentValue, error_args); |
| UNREACHABLE(); |
| } |
| type_arg ^= args.At(i); |
| type_args_obj.SetTypeAt(i, type_arg); |
| } |
| |
| Type& instantiated_type = Type::Handle(Type::New(clz, type_args_obj)); |
| instantiated_type ^= ClassFinalizer::FinalizeType(instantiated_type); |
| return instantiated_type.ptr(); |
| } |
| |
| DEFINE_NATIVE_ENTRY(Mirrors_mangleName, 0, 2) { |
| GET_NON_NULL_NATIVE_ARGUMENT(String, name, arguments->NativeArgAt(0)); |
| GET_NON_NULL_NATIVE_ARGUMENT(MirrorReference, ref, arguments->NativeArgAt(1)); |
| const Library& lib = Library::Handle(ref.GetLibraryReferent()); |
| return lib.IsPrivate(name) ? lib.PrivateName(name) : name.ptr(); |
| } |
| |
| DEFINE_NATIVE_ENTRY(MirrorReference_equals, 0, 2) { |
| GET_NON_NULL_NATIVE_ARGUMENT(MirrorReference, a, arguments->NativeArgAt(0)); |
| GET_NON_NULL_NATIVE_ARGUMENT(MirrorReference, b, arguments->NativeArgAt(1)); |
| return Bool::Get(a.referent() == b.referent()).ptr(); |
| } |
| |
| DEFINE_NATIVE_ENTRY(DeclarationMirror_metadata, 0, 1) { |
| GET_NON_NULL_NATIVE_ARGUMENT(Instance, reflectee, arguments->NativeArgAt(0)); |
| Object& decl = Object::Handle(); |
| if (reflectee.IsMirrorReference()) { |
| const MirrorReference& decl_ref = MirrorReference::Cast(reflectee); |
| decl = decl_ref.referent(); |
| } else if (reflectee.IsTypeParameter()) { |
| decl = reflectee.ptr(); |
| } else { |
| UNREACHABLE(); |
| } |
| |
| Class& klass = Class::Handle(); |
| Library& library = Library::Handle(); |
| |
| if (decl.IsClass()) { |
| klass ^= decl.ptr(); |
| library = klass.library(); |
| } else if (decl.IsFunction()) { |
| klass = Function::Cast(decl).Owner(); |
| library = klass.library(); |
| } else if (decl.IsField()) { |
| klass = Field::Cast(decl).Owner(); |
| library = klass.library(); |
| } else if (decl.IsLibrary()) { |
| library ^= decl.ptr(); |
| } else if (decl.IsTypeParameter()) { |
| // There is no reference from a canonical type parameter to its declaration. |
| return Object::empty_array().ptr(); |
| } else { |
| return Object::empty_array().ptr(); |
| } |
| |
| const Object& metadata = Object::Handle(library.GetMetadata(decl)); |
| if (metadata.IsError()) { |
| Exceptions::PropagateError(Error::Cast(metadata)); |
| } |
| return metadata.ptr(); |
| } |
| |
| DEFINE_NATIVE_ENTRY(FunctionTypeMirror_call_method, 0, 2) { |
| GET_NON_NULL_NATIVE_ARGUMENT(Instance, owner_mirror, |
| arguments->NativeArgAt(0)); |
| // Return get:call() method on class _Closure. |
| const auto& getter_name = Symbols::GetCall(); |
| const Class& closure_class = |
| Class::Handle(IsolateGroup::Current()->object_store()->closure_class()); |
| const Function& get_call = Function::Handle( |
| Resolver::ResolveDynamicAnyArgs(zone, closure_class, getter_name, |
| /*allow_add=*/false)); |
| ASSERT(!get_call.IsNull()); |
| return CreateMethodMirror(get_call, owner_mirror, AbstractType::Handle()); |
| } |
| |
| DEFINE_NATIVE_ENTRY(FunctionTypeMirror_parameters, 0, 2) { |
| GET_NON_NULL_NATIVE_ARGUMENT(Instance, owner, arguments->NativeArgAt(0)); |
| GET_NON_NULL_NATIVE_ARGUMENT(MirrorReference, ref, arguments->NativeArgAt(1)); |
| const FunctionType& sig = FunctionType::Handle(ref.GetFunctionTypeReferent()); |
| return CreateParameterMirrorList(Object::null_function(), sig, owner); |
| } |
| |
| DEFINE_NATIVE_ENTRY(FunctionTypeMirror_return_type, 0, 1) { |
| GET_NON_NULL_NATIVE_ARGUMENT(MirrorReference, ref, arguments->NativeArgAt(0)); |
| const FunctionType& sig = FunctionType::Handle(ref.GetFunctionTypeReferent()); |
| ASSERT(!sig.IsNull()); |
| AbstractType& type = AbstractType::Handle(sig.result_type()); |
| // Signatures of function types are instantiated, but not canonical. |
| return type.Canonicalize(thread); |
| } |
| |
| DEFINE_NATIVE_ENTRY(ClassMirror_libraryUri, 0, 1) { |
| GET_NON_NULL_NATIVE_ARGUMENT(MirrorReference, ref, arguments->NativeArgAt(0)); |
| const Class& klass = Class::Handle(ref.GetClassReferent()); |
| const Library& library = Library::Handle(klass.library()); |
| ASSERT(!library.IsNull()); |
| return library.url(); |
| } |
| |
| DEFINE_NATIVE_ENTRY(ClassMirror_supertype, 0, 1) { |
| GET_NON_NULL_NATIVE_ARGUMENT(AbstractType, type, arguments->NativeArgAt(0)); |
| ASSERT(type.IsFinalized()); |
| const Class& cls = Class::Handle( |
| type.IsFunctionType() |
| ? IsolateGroup::Current()->object_store()->closure_class() |
| : type.type_class()); |
| const AbstractType& super_type = AbstractType::Handle(cls.super_type()); |
| ASSERT(super_type.IsNull() || super_type.IsFinalized()); |
| return super_type.ptr(); |
| } |
| |
| DEFINE_NATIVE_ENTRY(ClassMirror_supertype_instantiated, 0, 1) { |
| GET_NON_NULL_NATIVE_ARGUMENT(AbstractType, type, arguments->NativeArgAt(0)); |
| ASSERT(type.IsFinalized()); |
| const Class& cls = Class::Handle( |
| type.IsFunctionType() |
| ? IsolateGroup::Current()->object_store()->closure_class() |
| : type.type_class()); |
| const AbstractType& super_type = AbstractType::Handle(cls.super_type()); |
| return InstantiateType(super_type, type); |
| } |
| |
| DEFINE_NATIVE_ENTRY(ClassMirror_interfaces, 0, 1) { |
| GET_NON_NULL_NATIVE_ARGUMENT(AbstractType, type, arguments->NativeArgAt(0)); |
| ASSERT(type.IsFinalized()); |
| const Class& cls = Class::Handle( |
| type.IsFunctionType() |
| ? IsolateGroup::Current()->object_store()->closure_class() |
| : type.type_class()); |
| const Error& error = Error::Handle(cls.EnsureIsFinalized(thread)); |
| if (!error.IsNull()) { |
| Exceptions::PropagateError(error); |
| } |
| |
| return cls.interfaces(); |
| } |
| |
| DEFINE_NATIVE_ENTRY(ClassMirror_interfaces_instantiated, 0, 1) { |
| GET_NON_NULL_NATIVE_ARGUMENT(AbstractType, type, arguments->NativeArgAt(0)); |
| ASSERT(type.IsFinalized()); |
| const Class& cls = Class::Handle( |
| type.IsFunctionType() |
| ? IsolateGroup::Current()->object_store()->closure_class() |
| : type.type_class()); |
| const Error& error = Error::Handle(cls.EnsureIsFinalized(thread)); |
| if (!error.IsNull()) { |
| Exceptions::PropagateError(error); |
| } |
| |
| Array& interfaces = Array::Handle(cls.interfaces()); |
| Array& interfaces_inst = Array::Handle(Array::New(interfaces.Length())); |
| AbstractType& interface = AbstractType::Handle(); |
| |
| for (int i = 0; i < interfaces.Length(); i++) { |
| interface ^= interfaces.At(i); |
| interface = InstantiateType(interface, type); |
| interfaces_inst.SetAt(i, interface); |
| } |
| |
| return interfaces_inst.ptr(); |
| } |
| |
| DEFINE_NATIVE_ENTRY(ClassMirror_mixin, 0, 1) { |
| GET_NON_NULL_NATIVE_ARGUMENT(AbstractType, type, arguments->NativeArgAt(0)); |
| ASSERT(type.IsFinalized()); |
| const Class& cls = Class::Handle( |
| type.IsFunctionType() |
| ? IsolateGroup::Current()->object_store()->closure_class() |
| : type.type_class()); |
| AbstractType& mixin_type = AbstractType::Handle(); |
| if (cls.is_transformed_mixin_application()) { |
| const Array& interfaces = Array::Handle(cls.interfaces()); |
| mixin_type ^= interfaces.At(interfaces.Length() - 1); |
| } |
| ASSERT(mixin_type.IsNull() || mixin_type.IsFinalized()); |
| return mixin_type.ptr(); |
| } |
| |
| DEFINE_NATIVE_ENTRY(ClassMirror_mixin_instantiated, 0, 2) { |
| GET_NON_NULL_NATIVE_ARGUMENT(AbstractType, type, arguments->NativeArgAt(0)); |
| GET_NON_NULL_NATIVE_ARGUMENT(AbstractType, instantiator, |
| arguments->NativeArgAt(1)); |
| ASSERT(type.IsFinalized()); |
| const Class& cls = Class::Handle( |
| type.IsFunctionType() |
| ? IsolateGroup::Current()->object_store()->closure_class() |
| : type.type_class()); |
| AbstractType& mixin_type = AbstractType::Handle(); |
| if (cls.is_transformed_mixin_application()) { |
| const Array& interfaces = Array::Handle(cls.interfaces()); |
| mixin_type ^= interfaces.At(interfaces.Length() - 1); |
| } |
| if (mixin_type.IsNull()) { |
| return mixin_type.ptr(); |
| } |
| |
| return InstantiateType(mixin_type, instantiator); |
| } |
| |
| DEFINE_NATIVE_ENTRY(ClassMirror_members, 0, 3) { |
| GET_NON_NULL_NATIVE_ARGUMENT(Instance, owner_mirror, |
| arguments->NativeArgAt(0)); |
| GET_NATIVE_ARGUMENT(AbstractType, owner_instantiator, |
| arguments->NativeArgAt(1)); |
| GET_NON_NULL_NATIVE_ARGUMENT(MirrorReference, ref, arguments->NativeArgAt(2)); |
| const Class& klass = Class::Handle(ref.GetClassReferent()); |
| |
| const Error& error = Error::Handle(klass.EnsureIsFinalized(thread)); |
| if (!error.IsNull()) { |
| Exceptions::PropagateError(error); |
| } |
| |
| const Array& fields = Array::Handle(klass.fields()); |
| const intptr_t num_fields = fields.Length(); |
| |
| const Array& functions = Array::Handle(klass.current_functions()); |
| const intptr_t num_functions = functions.Length(); |
| |
| Instance& member_mirror = Instance::Handle(); |
| const GrowableObjectArray& member_mirrors = GrowableObjectArray::Handle( |
| GrowableObjectArray::New(num_fields + num_functions)); |
| |
| Field& field = Field::Handle(); |
| for (intptr_t i = 0; i < num_fields; i++) { |
| field ^= fields.At(i); |
| if (field.is_reflectable()) { |
| member_mirror = CreateVariableMirror(field, owner_mirror); |
| member_mirrors.Add(member_mirror); |
| } |
| } |
| |
| Function& func = Function::Handle(); |
| for (intptr_t i = 0; i < num_functions; i++) { |
| func ^= functions.At(i); |
| if (func.is_reflectable() && |
| (func.kind() == UntaggedFunction::kRegularFunction || |
| func.kind() == UntaggedFunction::kGetterFunction || |
| func.kind() == UntaggedFunction::kSetterFunction)) { |
| member_mirror = |
| CreateMethodMirror(func, owner_mirror, owner_instantiator); |
| member_mirrors.Add(member_mirror); |
| } |
| } |
| |
| return member_mirrors.ptr(); |
| } |
| |
| DEFINE_NATIVE_ENTRY(ClassMirror_constructors, 0, 3) { |
| GET_NON_NULL_NATIVE_ARGUMENT(Instance, owner_mirror, |
| arguments->NativeArgAt(0)); |
| GET_NATIVE_ARGUMENT(AbstractType, owner_instantiator, |
| arguments->NativeArgAt(1)); |
| GET_NON_NULL_NATIVE_ARGUMENT(MirrorReference, ref, arguments->NativeArgAt(2)); |
| const Class& klass = Class::Handle(ref.GetClassReferent()); |
| |
| const Error& error = Error::Handle(klass.EnsureIsFinalized(thread)); |
| if (!error.IsNull()) { |
| Exceptions::PropagateError(error); |
| } |
| |
| const Array& functions = Array::Handle(klass.current_functions()); |
| const intptr_t num_functions = functions.Length(); |
| |
| Instance& constructor_mirror = Instance::Handle(); |
| const GrowableObjectArray& constructor_mirrors = |
| GrowableObjectArray::Handle(GrowableObjectArray::New(num_functions)); |
| |
| Function& func = Function::Handle(); |
| for (intptr_t i = 0; i < num_functions; i++) { |
| func ^= functions.At(i); |
| if (func.is_reflectable() && |
| func.kind() == UntaggedFunction::kConstructor) { |
| constructor_mirror = |
| CreateMethodMirror(func, owner_mirror, owner_instantiator); |
| constructor_mirrors.Add(constructor_mirror); |
| } |
| } |
| |
| return constructor_mirrors.ptr(); |
| } |
| |
| DEFINE_NATIVE_ENTRY(LibraryMirror_members, 0, 2) { |
| GET_NON_NULL_NATIVE_ARGUMENT(Instance, owner_mirror, |
| arguments->NativeArgAt(0)); |
| GET_NON_NULL_NATIVE_ARGUMENT(MirrorReference, ref, arguments->NativeArgAt(1)); |
| const Library& library = Library::Handle(zone, ref.GetLibraryReferent()); |
| |
| library.EnsureTopLevelClassIsFinalized(); |
| |
| Instance& member_mirror = Instance::Handle(zone); |
| const GrowableObjectArray& member_mirrors = |
| GrowableObjectArray::Handle(zone, GrowableObjectArray::New()); |
| |
| Object& entry = Object::Handle(zone); |
| DictionaryIterator entries(library); |
| |
| Error& error = Error::Handle(zone); |
| AbstractType& type = AbstractType::Handle(zone); |
| |
| while (entries.HasNext()) { |
| entry = entries.GetNext(); |
| if (entry.IsClass()) { |
| const Class& klass = Class::Cast(entry); |
| ASSERT(!klass.IsDynamicClass()); |
| ASSERT(!klass.IsVoidClass()); |
| ASSERT(!klass.IsNeverClass()); |
| error = klass.EnsureIsFinalized(thread); |
| if (!error.IsNull()) { |
| Exceptions::PropagateError(error); |
| } |
| type = klass.DeclarationType(); |
| member_mirror = CreateClassMirror(klass, type, |
| Bool::True(), // is_declaration |
| owner_mirror); |
| member_mirrors.Add(member_mirror); |
| } else if (entry.IsField()) { |
| const Field& field = Field::Cast(entry); |
| if (field.is_reflectable()) { |
| member_mirror = CreateVariableMirror(field, owner_mirror); |
| member_mirrors.Add(member_mirror); |
| } |
| } else if (entry.IsFunction()) { |
| const Function& func = Function::Cast(entry); |
| if (func.is_reflectable() && |
| (func.kind() == UntaggedFunction::kRegularFunction || |
| func.kind() == UntaggedFunction::kGetterFunction || |
| func.kind() == UntaggedFunction::kSetterFunction)) { |
| member_mirror = |
| CreateMethodMirror(func, owner_mirror, AbstractType::Handle()); |
| member_mirrors.Add(member_mirror); |
| } |
| } |
| } |
| |
| return member_mirrors.ptr(); |
| } |
| |
| DEFINE_NATIVE_ENTRY(ClassMirror_type_variables, 0, 1) { |
| GET_NON_NULL_NATIVE_ARGUMENT(MirrorReference, ref, arguments->NativeArgAt(0)); |
| const Class& klass = Class::Handle(ref.GetClassReferent()); |
| const Error& error = Error::Handle(zone, klass.EnsureIsFinalized(thread)); |
| if (!error.IsNull()) { |
| Exceptions::PropagateError(error); |
| UNREACHABLE(); |
| } |
| return CreateTypeVariableList(klass); |
| } |
| |
| DEFINE_NATIVE_ENTRY(ClassMirror_type_arguments, 0, 1) { |
| GET_NON_NULL_NATIVE_ARGUMENT(AbstractType, type, arguments->NativeArgAt(0)); |
| |
| const Class& cls = Class::Handle( |
| type.IsFunctionType() |
| ? IsolateGroup::Current()->object_store()->closure_class() |
| : type.type_class()); |
| const intptr_t num_params = cls.NumTypeParameters(); |
| |
| if (num_params == 0) { |
| return Object::empty_array().ptr(); |
| } |
| |
| const Array& result = Array::Handle(Array::New(num_params)); |
| AbstractType& arg_type = AbstractType::Handle(); |
| Instance& type_mirror = Instance::Handle(); |
| const TypeArguments& args = |
| TypeArguments::Handle(Type::Cast(type).arguments()); |
| |
| // Handle argument lists that have been optimized away, because either no |
| // arguments have been provided, or all arguments are dynamic. Return a list |
| // of typemirrors on dynamic in this case. |
| if (args.IsNull()) { |
| arg_type = Object::dynamic_type().ptr(); |
| type_mirror = CreateTypeMirror(arg_type); |
| for (intptr_t i = 0; i < num_params; i++) { |
| result.SetAt(i, type_mirror); |
| } |
| return result.ptr(); |
| } |
| |
| ASSERT(args.Length() == num_params); |
| for (intptr_t i = 0; i < num_params; i++) { |
| arg_type = args.TypeAt(i); |
| type_mirror = CreateTypeMirror(arg_type); |
| result.SetAt(i, type_mirror); |
| } |
| return result.ptr(); |
| } |
| |
| DEFINE_NATIVE_ENTRY(TypeVariableMirror_owner, 0, 1) { |
| // Type parameters do not have a reference to their owner anymore. |
| const AbstractType& type = AbstractType::Handle(Type::NullType()); |
| Class& owner = Class::Handle(type.type_class()); |
| return CreateClassMirror(owner, type, |
| Bool::True(), // is_declaration |
| Instance::null_instance()); |
| } |
| |
| DEFINE_NATIVE_ENTRY(TypeVariableMirror_upper_bound, 0, 1) { |
| GET_NON_NULL_NATIVE_ARGUMENT(TypeParameter, param, arguments->NativeArgAt(0)); |
| return param.bound(); |
| } |
| |
| DEFINE_NATIVE_ENTRY(InstanceMirror_invoke, 0, 5) { |
| // Argument 0 is the mirror, which is unused by the native. It exists |
| // because this native is an instance method in order to be polymorphic |
| // with its cousins. |
| GET_NATIVE_ARGUMENT(Instance, reflectee, arguments->NativeArgAt(1)); |
| GET_NON_NULL_NATIVE_ARGUMENT(String, function_name, |
| arguments->NativeArgAt(2)); |
| GET_NON_NULL_NATIVE_ARGUMENT(Array, args, arguments->NativeArgAt(3)); |
| GET_NON_NULL_NATIVE_ARGUMENT(Array, arg_names, arguments->NativeArgAt(4)); |
| RETURN_OR_PROPAGATE(reflectee.Invoke(function_name, args, arg_names)); |
| } |
| |
| DEFINE_NATIVE_ENTRY(InstanceMirror_invokeGetter, 0, 3) { |
| // Argument 0 is the mirror, which is unused by the native. It exists |
| // because this native is an instance method in order to be polymorphic |
| // with its cousins. |
| GET_NATIVE_ARGUMENT(Instance, reflectee, arguments->NativeArgAt(1)); |
| GET_NON_NULL_NATIVE_ARGUMENT(String, getter_name, arguments->NativeArgAt(2)); |
| RETURN_OR_PROPAGATE(reflectee.InvokeGetter(getter_name)); |
| } |
| |
| DEFINE_NATIVE_ENTRY(InstanceMirror_invokeSetter, 0, 4) { |
| // Argument 0 is the mirror, which is unused by the native. It exists |
| // because this native is an instance method in order to be polymorphic |
| // with its cousins. |
| GET_NATIVE_ARGUMENT(Instance, reflectee, arguments->NativeArgAt(1)); |
| GET_NON_NULL_NATIVE_ARGUMENT(String, setter_name, arguments->NativeArgAt(2)); |
| GET_NATIVE_ARGUMENT(Instance, value, arguments->NativeArgAt(3)); |
| RETURN_OR_PROPAGATE(reflectee.InvokeSetter(setter_name, value)); |
| } |
| |
| DEFINE_NATIVE_ENTRY(InstanceMirror_computeType, 0, 1) { |
| GET_NON_NULL_NATIVE_ARGUMENT(Instance, instance, arguments->NativeArgAt(0)); |
| const AbstractType& type = AbstractType::Handle(instance.GetType(Heap::kNew)); |
| // The static type of null is specified to be the bottom type, however, the |
| // runtime type of null is the Null type, which we correctly return here. |
| return type.Canonicalize(thread); |
| } |
| |
| DEFINE_NATIVE_ENTRY(ClosureMirror_function, 0, 1) { |
| GET_NON_NULL_NATIVE_ARGUMENT(Instance, closure, arguments->NativeArgAt(0)); |
| ASSERT(!closure.IsNull()); |
| |
| Function& function = Function::Handle(); |
| bool callable = closure.IsCallable(&function); |
| if (callable) { |
| const Function& parent = Function::Handle(function.parent_function()); |
| if (function.IsImplicitClosureFunction() || parent.is_extension_member() || |
| parent.is_extension_type_member()) { |
| // The VM uses separate Functions for tear-offs, but the mirrors consider |
| // the tear-offs to be the same as the torn-off methods. Avoid handing out |
| // a reference to the tear-off here to avoid a special case in the |
| // the equality test. |
| // In the case of extension methods also we avoid handing out a reference |
| // to the tear-off and instead get the parent function of the |
| // anonymous closure. |
| function = parent.ptr(); |
| } |
| |
| Type& instantiator = Type::Handle(); |
| if (closure.IsClosure()) { |
| const TypeArguments& arguments = TypeArguments::Handle( |
| Closure::Cast(closure).instantiator_type_arguments()); |
| // TODO(regis): Mirrors need work to properly support generic functions. |
| // The 'instantiator' created below should not be a type, but two type |
| // argument vectors: instantiator_type_arguments and |
| // function_type_arguments. |
| const Class& cls = Class::Handle( |
| IsolateGroup::Current()->object_store()->object_class()); |
| instantiator = Type::New(cls, arguments); |
| instantiator.SetIsFinalized(); |
| } |
| return CreateMethodMirror(function, Instance::null_instance(), |
| instantiator); |
| } |
| return Instance::null(); |
| } |
| |
| DEFINE_NATIVE_ENTRY(ClassMirror_invoke, 0, 5) { |
| // Argument 0 is the mirror, which is unused by the native. It exists |
| // because this native is an instance method in order to be polymorphic |
| // with its cousins. |
| GET_NON_NULL_NATIVE_ARGUMENT(MirrorReference, ref, arguments->NativeArgAt(1)); |
| const Class& klass = Class::Handle(ref.GetClassReferent()); |
| GET_NON_NULL_NATIVE_ARGUMENT(String, function_name, |
| arguments->NativeArgAt(2)); |
| GET_NON_NULL_NATIVE_ARGUMENT(Array, args, arguments->NativeArgAt(3)); |
| GET_NON_NULL_NATIVE_ARGUMENT(Array, arg_names, arguments->NativeArgAt(4)); |
| RETURN_OR_PROPAGATE(klass.Invoke(function_name, args, arg_names)); |
| } |
| |
| DEFINE_NATIVE_ENTRY(ClassMirror_invokeGetter, 0, 3) { |
| // Argument 0 is the mirror, which is unused by the native. It exists |
| // because this native is an instance method in order to be polymorphic |
| // with its cousins. |
| GET_NON_NULL_NATIVE_ARGUMENT(MirrorReference, ref, arguments->NativeArgAt(1)); |
| const Class& klass = Class::Handle(ref.GetClassReferent()); |
| const Error& error = Error::Handle(zone, klass.EnsureIsFinalized(thread)); |
| if (!error.IsNull()) { |
| Exceptions::PropagateError(error); |
| UNREACHABLE(); |
| } |
| GET_NON_NULL_NATIVE_ARGUMENT(String, getter_name, arguments->NativeArgAt(2)); |
| RETURN_OR_PROPAGATE(klass.InvokeGetter(getter_name, true)); |
| } |
| |
| DEFINE_NATIVE_ENTRY(ClassMirror_invokeSetter, 0, 4) { |
| // Argument 0 is the mirror, which is unused by the native. It exists |
| // because this native is an instance method in order to be polymorphic |
| // with its cousins. |
| GET_NON_NULL_NATIVE_ARGUMENT(MirrorReference, ref, arguments->NativeArgAt(1)); |
| const Class& klass = Class::Handle(ref.GetClassReferent()); |
| GET_NON_NULL_NATIVE_ARGUMENT(String, setter_name, arguments->NativeArgAt(2)); |
| GET_NATIVE_ARGUMENT(Instance, value, arguments->NativeArgAt(3)); |
| RETURN_OR_PROPAGATE(klass.InvokeSetter(setter_name, value)); |
| } |
| |
| DEFINE_NATIVE_ENTRY(ClassMirror_invokeConstructor, 0, 5) { |
| GET_NON_NULL_NATIVE_ARGUMENT(MirrorReference, ref, arguments->NativeArgAt(0)); |
| const Class& klass = Class::Handle(ref.GetClassReferent()); |
| GET_NATIVE_ARGUMENT(Type, type, arguments->NativeArgAt(1)); |
| GET_NON_NULL_NATIVE_ARGUMENT(String, constructor_name, |
| arguments->NativeArgAt(2)); |
| GET_NON_NULL_NATIVE_ARGUMENT(Array, explicit_args, arguments->NativeArgAt(3)); |
| GET_NON_NULL_NATIVE_ARGUMENT(Array, arg_names, arguments->NativeArgAt(4)); |
| |
| const Error& error = |
| Error::Handle(zone, klass.EnsureIsAllocateFinalized(thread)); |
| if (!error.IsNull()) { |
| Exceptions::PropagateError(error); |
| UNREACHABLE(); |
| } |
| |
| // By convention, the static function implementing a named constructor 'C' |
| // for class 'A' is labeled 'A.C', and the static function implementing the |
| // unnamed constructor for class 'A' is labeled 'A.'. |
| // This convention prevents users from explicitly calling constructors. |
| const String& klass_name = String::Handle(klass.Name()); |
| String& external_constructor_name = String::Handle(klass_name.ptr()); |
| String& internal_constructor_name = |
| String::Handle(String::Concat(klass_name, Symbols::Dot())); |
| if (!constructor_name.IsNull() && constructor_name.Length() > 0) { |
| internal_constructor_name = |
| String::Concat(internal_constructor_name, constructor_name); |
| external_constructor_name = internal_constructor_name.ptr(); |
| } |
| |
| Function& lookup_constructor = Function::Handle( |
| Resolver::ResolveFunction(zone, klass, internal_constructor_name)); |
| |
| if (lookup_constructor.IsNull() || |
| (lookup_constructor.kind() != UntaggedFunction::kConstructor) || |
| !lookup_constructor.is_reflectable()) { |
| ThrowNoSuchMethod(AbstractType::Handle(klass.RareType()), |
| external_constructor_name, explicit_args, arg_names, |
| InvocationMirror::kConstructor, |
| InvocationMirror::kMethod); |
| UNREACHABLE(); |
| } |
| |
| if (klass.is_abstract() && !lookup_constructor.IsFactory()) { |
| const Array& error_args = Array::Handle(Array::New(3)); |
| error_args.SetAt(0, klass_name); |
| // 1 = script url |
| // 2 = token position |
| Exceptions::ThrowByType(Exceptions::kAbstractClassInstantiation, |
| error_args); |
| UNREACHABLE(); |
| } |
| |
| ASSERT(!type.IsNull()); |
| TypeArguments& type_arguments = TypeArguments::Handle(); |
| if (!type.IsInstantiated()) { |
| // Must have been a declaration type. |
| const Type& rare_type = Type::Handle(klass.RareType()); |
| ASSERT(rare_type.IsInstantiated()); |
| type_arguments = rare_type.GetInstanceTypeArguments(thread); |
| } else { |
| type_arguments = type.GetInstanceTypeArguments(thread); |
| } |
| |
| Class& redirected_klass = Class::Handle(klass.ptr()); |
| const intptr_t num_explicit_args = explicit_args.Length(); |
| const intptr_t num_implicit_args = 1; |
| const Array& args = |
| Array::Handle(Array::New(num_implicit_args + num_explicit_args)); |
| |
| // Copy over the explicit arguments. |
| Object& explicit_argument = Object::Handle(); |
| for (int i = 0; i < num_explicit_args; i++) { |
| explicit_argument = explicit_args.At(i); |
| args.SetAt(i + num_implicit_args, explicit_argument); |
| } |
| |
| const int kTypeArgsLen = 0; |
| const Array& args_descriptor_array = Array::Handle( |
| ArgumentsDescriptor::NewBoxed(kTypeArgsLen, args.Length(), arg_names)); |
| |
| ArgumentsDescriptor args_descriptor(args_descriptor_array); |
| if (!lookup_constructor.AreValidArguments(args_descriptor, nullptr)) { |
| external_constructor_name = lookup_constructor.name(); |
| ThrowNoSuchMethod(AbstractType::Handle(klass.RareType()), |
| external_constructor_name, explicit_args, arg_names, |
| InvocationMirror::kConstructor, |
| InvocationMirror::kMethod); |
| UNREACHABLE(); |
| } |
| #if defined(DEBUG) |
| // Make sure the receiver is the null value, so that DoArgumentTypesMatch does |
| // not attempt to retrieve the instantiator type arguments from the receiver. |
| explicit_argument = args.At(args_descriptor.FirstArgIndex()); |
| ASSERT(explicit_argument.IsNull()); |
| #endif |
| const Object& type_error = |
| Object::Handle(lookup_constructor.DoArgumentTypesMatch( |
| args, args_descriptor, type_arguments)); |
| if (!type_error.IsNull()) { |
| Exceptions::PropagateError(Error::Cast(type_error)); |
| UNREACHABLE(); |
| } |
| |
| Instance& new_object = Instance::Handle(); |
| if (lookup_constructor.IsGenerativeConstructor()) { |
| // Constructors get the uninitialized object. |
| // Note we have delayed allocation until after the function |
| // type and argument matching checks. |
| new_object = Instance::New(redirected_klass); |
| if (!type_arguments.IsNull()) { |
| // The type arguments will be null if the class has no type parameters, in |
| // which case the following call would fail because there is no slot |
| // reserved in the object for the type vector. |
| new_object.SetTypeArguments(type_arguments); |
| } |
| args.SetAt(0, new_object); |
| } else { |
| // Factories get type arguments. |
| args.SetAt(0, type_arguments); |
| } |
| |
| // Invoke the constructor and return the new object. |
| const Object& result = Object::Handle(DartEntry::InvokeFunction( |
| lookup_constructor, args, args_descriptor_array)); |
| if (result.IsError()) { |
| Exceptions::PropagateError(Error::Cast(result)); |
| UNREACHABLE(); |
| } |
| |
| // Factories may return null. |
| ASSERT(result.IsInstance() || result.IsNull()); |
| |
| if (lookup_constructor.IsGenerativeConstructor()) { |
| return new_object.ptr(); |
| } else { |
| return result.ptr(); |
| } |
| } |
| |
| DEFINE_NATIVE_ENTRY(LibraryMirror_invoke, 0, 5) { |
| // Argument 0 is the mirror, which is unused by the native. It exists |
| // because this native is an instance method in order to be polymorphic |
| // with its cousins. |
| GET_NON_NULL_NATIVE_ARGUMENT(MirrorReference, ref, arguments->NativeArgAt(1)); |
| const Library& library = Library::Handle(ref.GetLibraryReferent()); |
| GET_NON_NULL_NATIVE_ARGUMENT(String, function_name, |
| arguments->NativeArgAt(2)); |
| GET_NON_NULL_NATIVE_ARGUMENT(Array, args, arguments->NativeArgAt(3)); |
| GET_NON_NULL_NATIVE_ARGUMENT(Array, arg_names, arguments->NativeArgAt(4)); |
| RETURN_OR_PROPAGATE(library.Invoke(function_name, args, arg_names)); |
| } |
| |
| DEFINE_NATIVE_ENTRY(LibraryMirror_invokeGetter, 0, 3) { |
| // Argument 0 is the mirror, which is unused by the native. It exists |
| // because this native is an instance method in order to be polymorphic |
| // with its cousins. |
| GET_NON_NULL_NATIVE_ARGUMENT(MirrorReference, ref, arguments->NativeArgAt(1)); |
| const Library& library = Library::Handle(ref.GetLibraryReferent()); |
| GET_NON_NULL_NATIVE_ARGUMENT(String, getter_name, arguments->NativeArgAt(2)); |
| RETURN_OR_PROPAGATE(library.InvokeGetter(getter_name, true)); |
| } |
| |
| DEFINE_NATIVE_ENTRY(LibraryMirror_invokeSetter, 0, 4) { |
| // Argument 0 is the mirror, which is unused by the native. It exists |
| // because this native is an instance method in order to be polymorphic |
| // with its cousins. |
| GET_NON_NULL_NATIVE_ARGUMENT(MirrorReference, ref, arguments->NativeArgAt(1)); |
| const Library& library = Library::Handle(ref.GetLibraryReferent()); |
| GET_NON_NULL_NATIVE_ARGUMENT(String, setter_name, arguments->NativeArgAt(2)); |
| GET_NATIVE_ARGUMENT(Instance, value, arguments->NativeArgAt(3)); |
| RETURN_OR_PROPAGATE(library.InvokeSetter(setter_name, value)); |
| } |
| |
| DEFINE_NATIVE_ENTRY(MethodMirror_owner, 0, 2) { |
| GET_NON_NULL_NATIVE_ARGUMENT(MirrorReference, ref, arguments->NativeArgAt(0)); |
| GET_NATIVE_ARGUMENT(AbstractType, instantiator, arguments->NativeArgAt(1)); |
| const Function& func = Function::Handle(ref.GetFunctionReferent()); |
| if (func.IsNonImplicitClosureFunction()) { |
| return CreateMethodMirror(Function::Handle(func.parent_function()), |
| Object::null_instance(), instantiator); |
| } |
| const Class& owner = Class::Handle(func.Owner()); |
| if (owner.IsTopLevel()) { |
| return CreateLibraryMirror(thread, Library::Handle(owner.library())); |
| } |
| |
| AbstractType& type = AbstractType::Handle(owner.DeclarationType()); |
| return CreateClassMirror(owner, type, Bool::True(), Object::null_instance()); |
| } |
| |
| DEFINE_NATIVE_ENTRY(MethodMirror_parameters, 0, 2) { |
| GET_NON_NULL_NATIVE_ARGUMENT(Instance, owner, arguments->NativeArgAt(0)); |
| GET_NON_NULL_NATIVE_ARGUMENT(MirrorReference, ref, arguments->NativeArgAt(1)); |
| const Function& func = Function::Handle(ref.GetFunctionReferent()); |
| const FunctionType& sig = FunctionType::Handle(func.signature()); |
| return CreateParameterMirrorList(func, sig, owner); |
| } |
| |
| DEFINE_NATIVE_ENTRY(MethodMirror_return_type, 0, 2) { |
| GET_NON_NULL_NATIVE_ARGUMENT(MirrorReference, ref, arguments->NativeArgAt(0)); |
| const Function& func = Function::Handle(ref.GetFunctionReferent()); |
| GET_NATIVE_ARGUMENT(AbstractType, instantiator, arguments->NativeArgAt(1)); |
| // We handle constructors in Dart code. |
| ASSERT(!func.IsGenerativeConstructor()); |
| AbstractType& type = AbstractType::Handle(func.result_type()); |
| type = |
| type.Canonicalize(thread); // Instantiated signatures are not canonical. |
| return InstantiateType(type, instantiator); |
| } |
| |
| DEFINE_NATIVE_ENTRY(MethodMirror_source, 0, 1) { |
| GET_NON_NULL_NATIVE_ARGUMENT(MirrorReference, ref, arguments->NativeArgAt(0)); |
| const Function& func = Function::Handle(ref.GetFunctionReferent()); |
| return func.GetSource(); |
| } |
| |
| static InstancePtr CreateSourceLocation(const String& uri, |
| intptr_t line, |
| intptr_t column) { |
| const Array& args = Array::Handle(Array::New(3)); |
| args.SetAt(0, uri); |
| args.SetAt(1, Smi::Handle(Smi::New(line))); |
| args.SetAt(2, Smi::Handle(Smi::New(column))); |
| return CreateMirror(Symbols::_SourceLocation(), args); |
| } |
| |
| DEFINE_NATIVE_ENTRY(DeclarationMirror_location, 0, 1) { |
| GET_NON_NULL_NATIVE_ARGUMENT(Instance, reflectee, arguments->NativeArgAt(0)); |
| Object& decl = Object::Handle(zone); |
| if (reflectee.IsMirrorReference()) { |
| const MirrorReference& decl_ref = MirrorReference::Cast(reflectee); |
| decl = decl_ref.referent(); |
| } else if (reflectee.IsTypeParameter()) { |
| decl = reflectee.ptr(); |
| } else { |
| UNREACHABLE(); |
| } |
| |
| Script& script = Script::Handle(zone); |
| TokenPosition token_pos = TokenPosition::kNoSource; |
| |
| if (decl.IsFunction()) { |
| const Function& func = Function::Cast(decl); |
| if (func.IsImplicitConstructor()) { |
| // These are synthetic methods; they have no source. |
| return Instance::null(); |
| } |
| script = func.script(); |
| token_pos = func.token_pos(); |
| } else if (decl.IsClass()) { |
| const Class& cls = Class::Cast(decl); |
| if (cls.is_synthesized_class() && !cls.is_enum_class()) { |
| return Instance::null(); // Synthetic. |
| } |
| script = cls.script(); |
| token_pos = cls.token_pos(); |
| } else if (decl.IsField()) { |
| const Field& field = Field::Cast(decl); |
| script = field.Script(); |
| token_pos = field.token_pos(); |
| } else if (decl.IsTypeParameter()) { |
| return Instance::null(); |
| } else if (decl.IsLibrary()) { |
| const Library& lib = Library::Cast(decl); |
| if (lib.ptr() == Library::NativeWrappersLibrary()) { |
| return Instance::null(); // No source. |
| } |
| const Array& scripts = Array::Handle(zone, lib.LoadedScripts()); |
| ASSERT(scripts.Length() > 0); |
| script ^= scripts.At(scripts.Length() - 1); |
| ASSERT(!script.IsNull()); |
| const String& uri = String::Handle(zone, script.url()); |
| return CreateSourceLocation(uri, 1, 1); |
| } else { |
| FATAL("Unexpected declaration type: %s", decl.ToCString()); |
| } |
| |
| ASSERT(!script.IsNull()); |
| if (token_pos == TokenPosition::kNoSource) { |
| return Instance::null(); |
| } |
| |
| const String& uri = String::Handle(zone, script.url()); |
| intptr_t from_line = 0, from_col = 0; |
| script.GetTokenLocation(token_pos, &from_line, &from_col); |
| return CreateSourceLocation(uri, from_line, from_col); |
| } |
| |
| DEFINE_NATIVE_ENTRY(ParameterMirror_type, 0, 3) { |
| GET_NON_NULL_NATIVE_ARGUMENT(MirrorReference, ref, arguments->NativeArgAt(0)); |
| GET_NON_NULL_NATIVE_ARGUMENT(Smi, pos, arguments->NativeArgAt(1)); |
| GET_NATIVE_ARGUMENT(AbstractType, instantiator, arguments->NativeArgAt(2)); |
| const FunctionType& signature = |
| FunctionType::Handle(ref.GetFunctionTypeReferent()); |
| AbstractType& type = AbstractType::Handle(signature.ParameterTypeAt( |
| signature.num_implicit_parameters() + pos.Value())); |
| type = |
| type.Canonicalize(thread); // Instantiated signatures are not canonical. |
| return InstantiateType(type, instantiator); |
| } |
| |
| DEFINE_NATIVE_ENTRY(VariableMirror_type, 0, 2) { |
| GET_NON_NULL_NATIVE_ARGUMENT(MirrorReference, ref, arguments->NativeArgAt(0)); |
| const Field& field = Field::Handle(ref.GetFieldReferent()); |
| GET_NATIVE_ARGUMENT(AbstractType, instantiator, arguments->NativeArgAt(1)); |
| const AbstractType& type = AbstractType::Handle(field.type()); |
| return InstantiateType(type, instantiator); |
| } |
| |
| DEFINE_NATIVE_ENTRY(TypeMirror_subtypeTest, 0, 2) { |
| GET_NON_NULL_NATIVE_ARGUMENT(AbstractType, a, arguments->NativeArgAt(0)); |
| GET_NON_NULL_NATIVE_ARGUMENT(AbstractType, b, arguments->NativeArgAt(1)); |
| return Bool::Get(a.IsSubtypeOf(b, Heap::kNew)).ptr(); |
| } |
| |
| #endif // !DART_PRECOMPILED_RUNTIME |
| |
| } // namespace dart |