056f927861
Tbr: ahaas@chromium.org,leszeks@chromium.org,verwaest@chromium.org Bug: v8:3770 Change-Id: Ia6530fbb70dac05e9972283781c3550d8b50e1eb Reviewed-on: https://chromium-review.googlesource.com/c/1390116 Commit-Queue: Jakob Kummerow <jkummerow@chromium.org> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org> Reviewed-by: Alexei Filippov <alph@chromium.org> Reviewed-by: Jakob Gruber <jgruber@chromium.org> Reviewed-by: Ulan Degenbaev <ulan@chromium.org> Reviewed-by: Sigurd Schneider <sigurds@chromium.org> Cr-Commit-Position: refs/heads/master@{#58470}
88 lines
2.1 KiB
C++
88 lines
2.1 KiB
C++
// Copyright 2016 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "src/field-type.h"
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#include "src/handles-inl.h"
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#include "src/objects-inl.h"
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#include "src/objects/smi.h"
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#include "src/ostreams.h"
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namespace v8 {
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namespace internal {
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// static
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FieldType FieldType::None() { return FieldType(Smi::FromInt(2).ptr()); }
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// static
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FieldType FieldType::Any() { return FieldType(Smi::FromInt(1).ptr()); }
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// static
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Handle<FieldType> FieldType::None(Isolate* isolate) {
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return handle(None(), isolate);
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}
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// static
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Handle<FieldType> FieldType::Any(Isolate* isolate) {
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return handle(Any(), isolate);
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}
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// static
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FieldType FieldType::Class(Map map) { return FieldType::cast(map); }
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// static
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Handle<FieldType> FieldType::Class(Handle<Map> map, Isolate* isolate) {
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return handle(Class(*map), isolate);
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}
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// static
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FieldType FieldType::cast(Object object) {
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DCHECK(object == None() || object == Any() || object->IsMap());
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return FieldType(object->ptr());
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}
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bool FieldType::IsClass() const { return this->IsMap(); }
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Map FieldType::AsClass() const {
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DCHECK(IsClass());
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return Map::cast(*this);
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}
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bool FieldType::NowStable() const {
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return !this->IsClass() || AsClass()->is_stable();
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}
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bool FieldType::NowIs(FieldType other) const {
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if (other->IsAny()) return true;
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if (IsNone()) return true;
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if (other->IsNone()) return false;
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if (IsAny()) return false;
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DCHECK(IsClass());
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DCHECK(other->IsClass());
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return *this == other;
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}
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bool FieldType::NowIs(Handle<FieldType> other) const { return NowIs(*other); }
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void FieldType::PrintTo(std::ostream& os) const {
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if (IsAny()) {
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os << "Any";
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} else if (IsNone()) {
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os << "None";
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} else {
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DCHECK(IsClass());
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os << "Class(" << reinterpret_cast<void*>(AsClass()->ptr()) << ")";
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}
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}
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bool FieldType::NowContains(Object value) const {
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if (*this == Any()) return true;
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if (*this == None()) return false;
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if (!value->IsHeapObject()) return false;
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return HeapObject::cast(value)->map() == Map::cast(*this);
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}
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} // namespace internal
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} // namespace v8
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