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// Copyright 2016 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "src/objects/field-type.h"
#include "src/handles/handles-inl.h"
#include "src/objects/objects-inl.h"
#include "src/objects/smi.h"
#include "src/utils/ostreams.h"
namespace v8 {
namespace internal {
// static
FieldType FieldType::None() { return FieldType(Smi::FromInt(2).ptr()); }
// static
FieldType FieldType::Any() { return FieldType(Smi::FromInt(1).ptr()); }
// static
Handle<FieldType> FieldType::None(Isolate* isolate) {
return handle(None(), isolate);
}
// static
Handle<FieldType> FieldType::Any(Isolate* isolate) {
return handle(Any(), isolate);
}
// static
FieldType FieldType::Class(Map map) { return FieldType::cast(map); }
// static
Handle<FieldType> FieldType::Class(Handle<Map> map, Isolate* isolate) {
return handle(Class(*map), isolate);
}
// static
FieldType FieldType::cast(Object object) {
DCHECK(object == None() || object == Any() || object.IsMap());
return FieldType(object.ptr());
}
bool FieldType::IsClass() const { return this->IsMap(); }
Map FieldType::AsClass() const {
DCHECK(IsClass());
return Map::cast(*this);
}
bool FieldType::NowStable() const {
return !this->IsClass() || AsClass().is_stable();
}
bool FieldType::NowIs(FieldType other) const {
if (other.IsAny()) return true;
if (IsNone()) return true;
if (other.IsNone()) return false;
if (IsAny()) return false;
DCHECK(IsClass());
DCHECK(other.IsClass());
return *this == other;
}
bool FieldType::NowIs(Handle<FieldType> other) const { return NowIs(*other); }
void FieldType::PrintTo(std::ostream& os) const {
if (IsAny()) {
os << "Any";
} else if (IsNone()) {
os << "None";
} else {
DCHECK(IsClass());
os << "Class(" << reinterpret_cast<void*>(AsClass().ptr()) << ")";
}
}
bool FieldType::NowContains(Object value) const {
if (*this == Any()) return true;
if (*this == None()) return false;
if (!value.IsHeapObject()) return false;
return HeapObject::cast(value).map() == Map::cast(*this);
}
} // namespace internal
} // namespace v8
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