/* libs/graphics/animator/SkOperand.h
**
** Copyright 2006, Google Inc.
**
** Licensed under the Apache License, Version 2.0 (the "License"); 
** you may not use this file except in compliance with the License. 
** You may obtain a copy of the License at 
**
**     http://www.apache.org/licenses/LICENSE-2.0 
**
** Unless required by applicable law or agreed to in writing, software 
** distributed under the License is distributed on an "AS IS" BASIS, 
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
** See the License for the specific language governing permissions and 
** limitations under the License.
*/

#ifndef SkOperand_DEFINED
#define SkOperand_DEFINED

#include "SkDisplayType.h"

class SkTypedArray;
class SkDisplayable;
class SkDrawable;
class SkString;

union SkOperand {
//  SkOperand() {}
//  SkOperand(SkScalar scalar) : fScalar(scalar) {}
    SkTypedArray* fArray;
    SkDisplayable* fDisplayable;
    SkDrawable* fDrawable;
    void* fObject;
    int32_t fS32;
    SkMSec fMSec;
    SkScalar fScalar;
    SkString* fString;
};

struct SkScriptValue {
    SkOperand fOperand;
    SkDisplayTypes fType;
    SkTypedArray* getArray() { SkASSERT(fType == SkType_Array); return fOperand.fArray; }
    SkDisplayable* getDisplayable() { SkASSERT(fType == SkType_Displayable); return fOperand.fDisplayable; }
    SkDrawable* getDrawable() { SkASSERT(fType == SkType_Drawable); return fOperand.fDrawable; }
    int32_t getS32(SkAnimateMaker* maker) { SkASSERT(fType == SkType_Int || fType == SkType_Boolean ||
        SkDisplayType::IsEnum(maker, fType)); return fOperand.fS32; }
    SkMSec getMSec() { SkASSERT(fType == SkType_MSec); return fOperand.fMSec; }
    SkScalar getScalar() { SkASSERT(fType == SkType_Float); return fOperand.fScalar; }
    SkString* getString() { SkASSERT(fType == SkType_String); return fOperand.fString; }
};

#endif // SkOperand_DEFINED