| // 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. |
| |
| #ifndef RUNTIME_VM_DART_API_MESSAGE_H_ |
| #define RUNTIME_VM_DART_API_MESSAGE_H_ |
| |
| #include "include/dart_native_api.h" |
| #include "platform/utils.h" |
| #include "vm/allocation.h" |
| #include "vm/dart_api_state.h" |
| #include "vm/message.h" |
| #include "vm/raw_object.h" |
| #include "vm/snapshot.h" |
| |
| namespace dart { |
| |
| // This class handles translation of certain ObjectPtrs to CObjects for |
| // NativeMessageHandlers. |
| // |
| // TODO(zra): Expand to support not only null, but also other VM heap objects |
| // as well. |
| class ApiObjectConverter : public AllStatic { |
| public: |
| static bool CanConvert(const ObjectPtr raw_obj) { |
| return !raw_obj->IsHeapObject() || (raw_obj == Object::null()); |
| } |
| |
| static bool Convert(const ObjectPtr raw_obj, Dart_CObject* c_obj) { |
| if (!raw_obj->IsHeapObject()) { |
| ConvertSmi(static_cast<const SmiPtr>(raw_obj), c_obj); |
| } else if (raw_obj == Object::null()) { |
| ConvertNull(c_obj); |
| } else { |
| return false; |
| } |
| return true; |
| } |
| |
| private: |
| static void ConvertSmi(const SmiPtr raw_smi, Dart_CObject* c_obj) { |
| ASSERT(!raw_smi->IsHeapObject()); |
| intptr_t value = Smi::Value(raw_smi); |
| if (Utils::IsInt(31, value)) { |
| c_obj->type = Dart_CObject_kInt32; |
| c_obj->value.as_int32 = static_cast<int32_t>(value); |
| } else { |
| c_obj->type = Dart_CObject_kInt64; |
| c_obj->value.as_int64 = static_cast<int64_t>(value); |
| } |
| } |
| |
| static void ConvertNull(Dart_CObject* c_obj) { |
| c_obj->type = Dart_CObject_kNull; |
| c_obj->value.as_int64 = 0; |
| } |
| }; |
| |
| } // namespace dart |
| |
| #endif // RUNTIME_VM_DART_API_MESSAGE_H_ |