1 2 /* 3 * Copyright 2011 Google Inc. 4 * 5 * Use of this source code is governed by a BSD-style license that can be 6 * found in the LICENSE file. 7 */ 8 #ifndef SkScriptCallBack_DEFINED 9 #define SkScriptCallBack_DEFINED 10 11 #include "SkOperand2.h" 12 #include "SkTDArray_Experimental.h" 13 14 class SkScriptCallBack { 15 public: 16 virtual ~SkScriptCallBack() { } 17 18 enum Type { 19 kBox, 20 kFunction, 21 kMember, 22 kMemberFunction, 23 kProperty, 24 kUnbox 25 }; 26 27 virtual bool getReference(const char* , size_t len, SkScriptValue2* result) { return false; } 28 virtual SkOperand2::OpType getReturnType(size_t ref, SkOperand2*) { 29 return SkOperand2::kS32; } 30 virtual Type getType() const = 0; 31 }; 32 33 class SkScriptCallBackConvert : public SkScriptCallBack { 34 public: 35 virtual bool convert(SkOperand2::OpType type, SkOperand2* operand) = 0; 36 }; 37 38 class SkScriptCallBackFunction : public SkScriptCallBack { 39 public: 40 virtual void getParamTypes(SkIntArray(SkOperand2::OpType)* types) = 0; 41 virtual Type getType() const { return kFunction; } 42 virtual bool invoke(size_t ref, SkOpArray* params, SkOperand2* value) = 0; 43 }; 44 45 class SkScriptCallBackMember: public SkScriptCallBack { 46 public: 47 bool getMemberReference(const char* , size_t len, void* object, SkScriptValue2* ref); 48 virtual Type getType() const { return kMember; } 49 virtual bool invoke(size_t ref, void* object, SkOperand2* value) = 0; 50 }; 51 52 class SkScriptCallBackMemberFunction : public SkScriptCallBack { 53 public: 54 bool getMemberReference(const char* , size_t len, void* object, SkScriptValue2* ref); 55 virtual void getParamTypes(SkIntArray(SkOperand2::OpType)* types) = 0; 56 virtual Type getType() const { return kMemberFunction; } 57 virtual bool invoke(size_t ref, void* object, SkOpArray* params, SkOperand2* value) = 0; 58 }; 59 60 class SkScriptCallBackProperty : public SkScriptCallBack { 61 public: 62 virtual bool getConstValue(const char* name, size_t len, SkOperand2* value) { return false; } 63 virtual bool getResult(size_t ref, SkOperand2* answer) { return false; } 64 virtual Type getType() const { return kProperty; } 65 }; 66 67 #endif // SkScriptCallBack_DEFINED 68
