1 // Copyright 2017 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_OBJECTS_LITERAL_OBJECTS_H_ 6 #define V8_OBJECTS_LITERAL_OBJECTS_H_ 7 8 #include "src/objects.h" 9 10 // Has to be the last include (doesn't have include guards): 11 #include "src/objects/object-macros.h" 12 13 namespace v8 { 14 namespace internal { 15 16 // BoilerplateDescription is a list of properties consisting of name value 17 // pairs. In addition to the properties, it provides the projected number 18 // of properties in the backing store. This number includes properties with 19 // computed names that are not 20 // in the list. 21 class BoilerplateDescription : public FixedArray { 22 public: 23 Object* name(int index) const; 24 Object* value(int index) const; 25 26 // The number of boilerplate properties. 27 int size() const; 28 29 // Number of boilerplate properties and properties with computed names. 30 int backing_store_size() const; 31 32 void set_backing_store_size(Isolate* isolate, int backing_store_size); 33 34 DECLARE_CAST(BoilerplateDescription) 35 36 private: 37 bool has_number_of_properties() const; 38 }; 39 40 // Pair of {ElementsKind} and an array of constant values for {ArrayLiteral} 41 // expressions. Used to communicate with the runtime for literal boilerplate 42 // creation within the {Runtime_CreateArrayLiteral} method. 43 class ConstantElementsPair : public Struct { 44 public: 45 DECL_INT_ACCESSORS(elements_kind) 46 DECL_ACCESSORS(constant_values, FixedArrayBase) 47 48 DECLARE_CAST(ConstantElementsPair) 49 50 // Dispatched behavior. 51 DECLARE_PRINTER(ConstantElementsPair) 52 DECLARE_VERIFIER(ConstantElementsPair) 53 54 static const int kElementsKindOffset = HeapObject::kHeaderSize; 55 static const int kConstantValuesOffset = kElementsKindOffset + kPointerSize; 56 static const int kSize = kConstantValuesOffset + kPointerSize; 57 58 private: 59 DISALLOW_IMPLICIT_CONSTRUCTORS(ConstantElementsPair); 60 }; 61 62 } // namespace internal 63 } // namespace v8 64 65 #include "src/objects/object-macros-undef.h" 66 67 #endif // V8_OBJECTS_LITERAL_OBJECTS_H_ 68