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// 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_