michael@0: 
michael@0: /*
michael@0:  * Copyright 2011 Google Inc.
michael@0:  *
michael@0:  * Use of this source code is governed by a BSD-style license that can be
michael@0:  * found in the LICENSE file.
michael@0:  */
michael@0: #ifndef SkScriptCallBack_DEFINED
michael@0: #define SkScriptCallBack_DEFINED
michael@0: 
michael@0: #include "SkOperand2.h"
michael@0: #include "SkTDArray_Experimental.h"
michael@0: 
michael@0: class SkScriptCallBack {
michael@0: public:
michael@0:     virtual ~SkScriptCallBack() { }
michael@0: 
michael@0:     enum Type {
michael@0:         kBox,
michael@0:         kFunction,
michael@0:         kMember,
michael@0:         kMemberFunction,
michael@0:         kProperty,
michael@0:         kUnbox
michael@0:     };
michael@0: 
michael@0:     virtual bool getReference(const char* , size_t len, SkScriptValue2* result) {  return false; }
michael@0:     virtual SkOperand2::OpType getReturnType(size_t ref, SkOperand2*) {
michael@0:         return SkOperand2::kS32; }
michael@0:     virtual Type getType() const = 0;
michael@0: };
michael@0: 
michael@0: class SkScriptCallBackConvert : public SkScriptCallBack {
michael@0: public:
michael@0:     virtual bool convert(SkOperand2::OpType type, SkOperand2* operand) = 0;
michael@0: };
michael@0: 
michael@0: class SkScriptCallBackFunction : public SkScriptCallBack {
michael@0: public:
michael@0:     virtual void getParamTypes(SkIntArray(SkOperand2::OpType)* types) = 0;
michael@0:     virtual Type getType() const { return kFunction; }
michael@0:     virtual bool invoke(size_t ref, SkOpArray* params, SkOperand2* value) = 0;
michael@0: };
michael@0: 
michael@0: class SkScriptCallBackMember: public SkScriptCallBack {
michael@0: public:
michael@0:     bool getMemberReference(const char* , size_t len, void* object, SkScriptValue2* ref);
michael@0:     virtual Type getType() const { return kMember; }
michael@0:     virtual bool invoke(size_t ref, void* object, SkOperand2* value) = 0;
michael@0: };
michael@0: 
michael@0: class SkScriptCallBackMemberFunction : public SkScriptCallBack {
michael@0: public:
michael@0:     bool getMemberReference(const char* , size_t len, void* object, SkScriptValue2* ref);
michael@0:     virtual void getParamTypes(SkIntArray(SkOperand2::OpType)* types) = 0;
michael@0:     virtual Type getType() const { return kMemberFunction; }
michael@0:     virtual bool invoke(size_t ref, void* object, SkOpArray* params, SkOperand2* value) = 0;
michael@0: };
michael@0: 
michael@0: class SkScriptCallBackProperty : public SkScriptCallBack {
michael@0: public:
michael@0:     virtual bool getConstValue(const char* name, size_t len, SkOperand2* value) { return false; }
michael@0:     virtual bool getResult(size_t ref, SkOperand2* answer) { return false; }
michael@0:     virtual Type getType() const { return kProperty; }
michael@0: };
michael@0: 
michael@0: #endif // SkScriptCallBack_DEFINED