1 // Copyright 2016 the V8 project authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef V8_FIELD_TYPE_H_ 6 #define V8_FIELD_TYPE_H_ 7 8 #include "src/ast/ast-types.h" 9 #include "src/objects.h" 10 #include "src/ostreams.h" 11 12 namespace v8 { 13 namespace internal { 14 15 template <typename T> 16 class Handle; 17 18 class FieldType : public Object { 19 public: 20 static FieldType* None(); 21 static FieldType* Any(); 22 static Handle<FieldType> None(Isolate* isolate); 23 static Handle<FieldType> Any(Isolate* isolate); 24 static FieldType* Class(i::Map* map); 25 static Handle<FieldType> Class(i::Handle<i::Map> map, Isolate* isolate); 26 static FieldType* cast(Object* object); 27 28 bool NowContains(Object* value) { 29 if (this == Any()) return true; 30 if (this == None()) return false; 31 if (!value->IsHeapObject()) return false; 32 return HeapObject::cast(value)->map() == Map::cast(this); 33 } 34 35 bool NowContains(Handle<Object> value) { return NowContains(*value); } 36 37 bool IsClass(); 38 Handle<i::Map> AsClass(); 39 bool IsNone() { return this == None(); } 40 bool IsAny() { return this == Any(); } 41 bool NowStable(); 42 bool NowIs(FieldType* other); 43 bool NowIs(Handle<FieldType> other); 44 AstType* Convert(Zone* zone); 45 46 void PrintTo(std::ostream& os); 47 }; 48 49 } // namespace internal 50 } // namespace v8 51 52 #endif // V8_FIELD_TYPE_H_ 53
