/*

 * Copyright 2016 Google Inc.

 *

 * Use of this source code is governed by a BSD-style license that can be

 * found in the LICENSE file.

 */

#ifndef SkSVGValue_DEFINED

#define SkSVGValue_DEFINED

#include "include/core/SkColor.h"

#include "include/core/SkMatrix.h"

#include "include/core/SkPath.h"

#include "include/core/SkTypes.h"

#include "include/private/base/SkNoncopyable.h"

#include "modules/svg/include/SkSVGTypes.h"

class SK_API SkSVGValue : public SkNoncopyable {

public:

    enum class Type {

        kColor,

        kFilter,

        kLength,

        kNumber,

        kObjectBoundingBoxUnits,

        kPreserveAspectRatio,

        kStopColor,

        kString,

        kTransform,

        kViewBox,

    };

    Type type() const { return fType; }

    template <typename T>

    const T* as() const {

        return fType == T::TYPE ? static_cast<const T*>(this) : nullptr;

    }

SkSVGWrapperValue<SkSVGLength, (SkSVGValue::Type)2> const* SkSVGValue::as<SkSVGWrapperValue<SkSVGLength, (SkSVGValue::Type)2> >() const

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    const T* as() const {

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        return fType == T::TYPE ? static_cast<const T*>(this) : nullptr;

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    }

SkSVGWrapperValue<SkRect, (SkSVGValue::Type)9> const* SkSVGValue::as<SkSVGWrapperValue<SkRect, (SkSVGValue::Type)9> >() const

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    const T* as() const {

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        return fType == T::TYPE ? static_cast<const T*>(this) : nullptr;

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    }

Unexecuted instantiation: SkSVGWrapperValue<SkSVGPreserveAspectRatio, (SkSVGValue::Type)5> const* SkSVGValue::as<SkSVGWrapperValue<SkSVGPreserveAspectRatio, (SkSVGValue::Type)5> >() const

SkSVGWrapperValue<SkMatrix, (SkSVGValue::Type)8> const* SkSVGValue::as<SkSVGWrapperValue<SkMatrix, (SkSVGValue::Type)8> >() const

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    const T* as() const {

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        return fType == T::TYPE ? static_cast<const T*>(this) : nullptr;

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    }

protected:

    SkSVGValue(Type t) : fType(t) { }

private:

    Type fType;

    using INHERITED = SkNoncopyable;

};

template <typename T, SkSVGValue::Type ValueType>

class SK_API SkSVGWrapperValue final : public SkSVGValue {

public:

    static constexpr Type TYPE = ValueType;

    explicit SkSVGWrapperValue(const T& v)

        : INHERITED(ValueType)

        , fWrappedValue(v) { }

SkSVGWrapperValue<SkSVGLength, (SkSVGValue::Type)2>::SkSVGWrapperValue(SkSVGLength const&)

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        , fWrappedValue(v) { }

Unexecuted instantiation: SkSVGWrapperValue<SkSVGObjectBoundingBoxUnits, (SkSVGValue::Type)4>::SkSVGWrapperValue(SkSVGObjectBoundingBoxUnits const&)

Unexecuted instantiation: SkSVGWrapperValue<SkSVGPreserveAspectRatio, (SkSVGValue::Type)5>::SkSVGWrapperValue(SkSVGPreserveAspectRatio const&)

SkSVGWrapperValue<SkString, (SkSVGValue::Type)7>::SkSVGWrapperValue(SkString const&)

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        , fWrappedValue(v) { }

SkSVGWrapperValue<SkMatrix, (SkSVGValue::Type)8>::SkSVGWrapperValue(SkMatrix const&)

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        , fWrappedValue(v) { }

SkSVGWrapperValue<SkRect, (SkSVGValue::Type)9>::SkSVGWrapperValue(SkRect const&)

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        , fWrappedValue(v) { }

    operator const T&() const { return fWrappedValue; }

SkSVGWrapperValue<SkSVGLength, (SkSVGValue::Type)2>::operator SkSVGLength const&() const

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    operator const T&() const { return fWrappedValue; }

SkSVGWrapperValue<SkRect, (SkSVGValue::Type)9>::operator SkRect const&() const

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    operator const T&() const { return fWrappedValue; }

Unexecuted instantiation: SkSVGWrapperValue<SkSVGPreserveAspectRatio, (SkSVGValue::Type)5>::operator SkSVGPreserveAspectRatio const&() const

SkSVGWrapperValue<SkMatrix, (SkSVGValue::Type)8>::operator SkMatrix const&() const

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    operator const T&() const { return fWrappedValue; }

    const T* operator->() const { return &fWrappedValue; }

private:

    // Stack-only

    void* operator new(size_t) = delete;

    void* operator new(size_t, void*) = delete;

    const T& fWrappedValue;

    using INHERITED = SkSVGValue;

};

using SkSVGColorValue        = SkSVGWrapperValue<SkSVGColorType    , SkSVGValue::Type::kColor     >;

using SkSVGLengthValue       = SkSVGWrapperValue<SkSVGLength       , SkSVGValue::Type::kLength    >;

using SkSVGTransformValue    = SkSVGWrapperValue<SkSVGTransformType, SkSVGValue::Type::kTransform >;

using SkSVGViewBoxValue      = SkSVGWrapperValue<SkSVGViewBoxType  , SkSVGValue::Type::kViewBox   >;

using SkSVGNumberValue       = SkSVGWrapperValue<SkSVGNumberType   , SkSVGValue::Type::kNumber    >;

using SkSVGStringValue       = SkSVGWrapperValue<SkSVGStringType   , SkSVGValue::Type::kString    >;

using SkSVGStopColorValue    = SkSVGWrapperValue<SkSVGStopColor    , SkSVGValue::Type::kStopColor >;

using SkSVGPreserveAspectRatioValue    = SkSVGWrapperValue<SkSVGPreserveAspectRatio,

                                                           SkSVGValue::Type::kPreserveAspectRatio>;

using SkSVGObjectBoundingBoxUnitsValue = SkSVGWrapperValue<SkSVGObjectBoundingBoxUnits,

                                                           SkSVGValue::Type::kObjectBoundingBoxUnits>;

#endif // SkSVGValue_DEFINED