1 // Copyright 2015 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 /** 6 * This header contains a set of experimental V8 APIs. We hope these will 7 * become a part of standard V8, but they may also be removed if we deem the 8 * experiment to not be successul. 9 */ 10 #ifndef V8_INCLUDE_V8_EXPERIMENTAL_H_ 11 #define V8_INCLUDE_V8_EXPERIMENTAL_H_ 12 13 #include "include/v8.h" 14 15 namespace v8 { 16 namespace experimental { 17 18 // Allow the embedder to construct accessors that V8 can compile and use 19 // directly, without jumping into the runtime. 20 class V8_EXPORT FastAccessorBuilder { 21 public: 22 struct ValueId { 23 size_t value_id; 24 }; 25 struct LabelId { 26 size_t label_id; 27 }; 28 29 static FastAccessorBuilder* New(Isolate* isolate); 30 31 ValueId IntegerConstant(int int_constant); 32 ValueId GetReceiver(); 33 ValueId LoadInternalField(ValueId value_id, int field_no); 34 ValueId LoadValue(ValueId value_id, int offset); 35 ValueId LoadObject(ValueId value_id, int offset); 36 void ReturnValue(ValueId value_id); 37 void CheckFlagSetOrReturnNull(ValueId value_id, int mask); 38 void CheckNotZeroOrReturnNull(ValueId value_id); 39 LabelId MakeLabel(); 40 void SetLabel(LabelId label_id); 41 void CheckNotZeroOrJump(ValueId value_id, LabelId label_id); 42 43 private: 44 FastAccessorBuilder() = delete; 45 FastAccessorBuilder(const FastAccessorBuilder&) = delete; 46 ~FastAccessorBuilder() = delete; 47 void operator=(const FastAccessorBuilder&) = delete; 48 }; 49 50 } // namespace experimental 51 } // namespace v8 52 53 #endif // V8_INCLUDE_V8_EXPERIMENTAL_H_ 54