| /* |
| * Copyright (C) 2013 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #pragma once |
| |
| #include "JSCJSValue.h" |
| #include "MathCommon.h" |
| #include "TypedArrayType.h" |
| #include <wtf/MathExtras.h> |
| |
| namespace JSC { |
| |
| template< |
| typename TypeArg, typename ViewTypeArg, typename JSViewTypeArg, |
| TypedArrayType typeValueArg> |
| struct IntegralTypedArrayAdaptor { |
| typedef TypeArg Type; |
| typedef ViewTypeArg ViewType; |
| typedef JSViewTypeArg JSViewType; |
| static const TypedArrayType typeValue = typeValueArg; |
| constexpr static const TypeArg minValue = std::numeric_limits<TypeArg>::lowest(); |
| constexpr static const TypeArg maxValue = std::numeric_limits<TypeArg>::max(); |
| |
| static JSValue toJSValue(Type value) |
| { |
| return jsNumber(value); |
| } |
| |
| static double toDouble(Type value) |
| { |
| return static_cast<double>(value); |
| } |
| |
| static Type toNativeFromInt32(int32_t value) |
| { |
| return static_cast<Type>(value); |
| } |
| |
| static Type toNativeFromUint32(uint32_t value) |
| { |
| return static_cast<Type>(value); |
| } |
| |
| static Type toNativeFromDouble(double value) |
| { |
| int32_t result = static_cast<int32_t>(value); |
| if (static_cast<double>(result) != value) |
| result = toInt32(value); |
| return static_cast<Type>(result); |
| } |
| |
| template<typename OtherAdaptor> |
| static typename OtherAdaptor::Type convertTo(Type value) |
| { |
| if (typeValue == TypeUint32) |
| return OtherAdaptor::toNativeFromUint32(value); |
| return OtherAdaptor::toNativeFromInt32(value); |
| } |
| |
| static std::optional<Type> toNativeFromInt32WithoutCoercion(int32_t value) |
| { |
| if ((value >= 0 && static_cast<uint32_t>(value) > static_cast<uint32_t>(maxValue)) || value < static_cast<int32_t>(minValue)) |
| return std::nullopt; |
| return static_cast<Type>(value); |
| } |
| |
| static std::optional<Type> toNativeFromUint32WithoutCoercion(uint32_t value) |
| { |
| if (value > static_cast<uint32_t>(maxValue)) |
| return std::nullopt; |
| |
| return static_cast<Type>(value); |
| } |
| |
| static std::optional<Type> toNativeFromDoubleWithoutCoercion(double value) |
| { |
| Type integer = static_cast<Type>(value); |
| if (static_cast<double>(integer) != value) |
| return std::nullopt; |
| |
| if (value < 0) |
| return toNativeFromInt32WithoutCoercion(static_cast<int32_t>(value)); |
| |
| return toNativeFromUint32WithoutCoercion(static_cast<uint32_t>(value)); |
| } |
| }; |
| |
| template< |
| typename TypeArg, typename ViewTypeArg, typename JSViewTypeArg, |
| TypedArrayType typeValueArg> |
| struct FloatTypedArrayAdaptor { |
| typedef TypeArg Type; |
| typedef ViewTypeArg ViewType; |
| typedef JSViewTypeArg JSViewType; |
| static const TypedArrayType typeValue = typeValueArg; |
| constexpr static const TypeArg minValue = std::numeric_limits<TypeArg>::lowest(); |
| constexpr static const TypeArg maxValue = std::numeric_limits<TypeArg>::max(); |
| |
| static JSValue toJSValue(Type value) |
| { |
| return jsDoubleNumber(purifyNaN(value)); |
| } |
| |
| static double toDouble(Type value) |
| { |
| return static_cast<double>(value); |
| } |
| |
| static Type toNativeFromInt32(int32_t value) |
| { |
| return static_cast<Type>(value); |
| } |
| |
| static Type toNativeFromUint32(uint32_t value) |
| { |
| return static_cast<Type>(value); |
| } |
| |
| static Type toNativeFromDouble(double value) |
| { |
| return static_cast<Type>(value); |
| } |
| |
| template<typename OtherAdaptor> |
| static typename OtherAdaptor::Type convertTo(Type value) |
| { |
| return OtherAdaptor::toNativeFromDouble(value); |
| } |
| |
| static std::optional<Type> toNativeFromInt32WithoutCoercion(int32_t value) |
| { |
| return static_cast<Type>(value); |
| } |
| |
| static std::optional<Type> toNativeFromDoubleWithoutCoercion(double value) |
| { |
| if (std::isnan(value) || std::isinf(value)) |
| return static_cast<Type>(value); |
| |
| Type valueResult = static_cast<Type>(value); |
| |
| if (static_cast<double>(valueResult) != value) |
| return std::nullopt; |
| |
| if (value < minValue || value > maxValue) |
| return std::nullopt; |
| |
| return valueResult; |
| } |
| }; |
| |
| struct Int8Adaptor; |
| struct Int16Adaptor; |
| struct Int32Adaptor; |
| struct Uint8Adaptor; |
| struct Uint8ClampedAdaptor; |
| struct Uint16Adaptor; |
| struct Uint32Adaptor; |
| struct Float32Adaptor; |
| struct Float64Adaptor; |
| |
| template<typename Adaptor> class GenericTypedArrayView; |
| typedef GenericTypedArrayView<Int8Adaptor> Int8Array; |
| typedef GenericTypedArrayView<Int16Adaptor> Int16Array; |
| typedef GenericTypedArrayView<Int32Adaptor> Int32Array; |
| typedef GenericTypedArrayView<Uint8Adaptor> Uint8Array; |
| typedef GenericTypedArrayView<Uint8ClampedAdaptor> Uint8ClampedArray; |
| typedef GenericTypedArrayView<Uint16Adaptor> Uint16Array; |
| typedef GenericTypedArrayView<Uint32Adaptor> Uint32Array; |
| typedef GenericTypedArrayView<Float32Adaptor> Float32Array; |
| typedef GenericTypedArrayView<Float64Adaptor> Float64Array; |
| |
| template<typename Adaptor> class JSGenericTypedArrayView; |
| typedef JSGenericTypedArrayView<Int8Adaptor> JSInt8Array; |
| typedef JSGenericTypedArrayView<Int16Adaptor> JSInt16Array; |
| typedef JSGenericTypedArrayView<Int32Adaptor> JSInt32Array; |
| typedef JSGenericTypedArrayView<Uint8Adaptor> JSUint8Array; |
| typedef JSGenericTypedArrayView<Uint8ClampedAdaptor> JSUint8ClampedArray; |
| typedef JSGenericTypedArrayView<Uint16Adaptor> JSUint16Array; |
| typedef JSGenericTypedArrayView<Uint32Adaptor> JSUint32Array; |
| typedef JSGenericTypedArrayView<Float32Adaptor> JSFloat32Array; |
| typedef JSGenericTypedArrayView<Float64Adaptor> JSFloat64Array; |
| |
| struct Int8Adaptor : IntegralTypedArrayAdaptor<int8_t, Int8Array, JSInt8Array, TypeInt8> { }; |
| struct Int16Adaptor : IntegralTypedArrayAdaptor<int16_t, Int16Array, JSInt16Array, TypeInt16> { }; |
| struct Int32Adaptor : IntegralTypedArrayAdaptor<int32_t, Int32Array, JSInt32Array, TypeInt32> { }; |
| struct Uint8Adaptor : IntegralTypedArrayAdaptor<uint8_t, Uint8Array, JSUint8Array, TypeUint8> { }; |
| struct Uint16Adaptor : IntegralTypedArrayAdaptor<uint16_t, Uint16Array, JSUint16Array, TypeUint16> { }; |
| struct Uint32Adaptor : IntegralTypedArrayAdaptor<uint32_t, Uint32Array, JSUint32Array, TypeUint32> { }; |
| struct Float32Adaptor : FloatTypedArrayAdaptor<float, Float32Array, JSFloat32Array, TypeFloat32> { }; |
| struct Float64Adaptor : FloatTypedArrayAdaptor<double, Float64Array, JSFloat64Array, TypeFloat64> { }; |
| |
| struct Uint8ClampedAdaptor { |
| typedef uint8_t Type; |
| typedef Uint8ClampedArray ViewType; |
| typedef JSUint8ClampedArray JSViewType; |
| static const TypedArrayType typeValue = TypeUint8Clamped; |
| constexpr static const uint8_t minValue = std::numeric_limits<uint8_t>::lowest(); |
| constexpr static const uint8_t maxValue = std::numeric_limits<uint8_t>::max(); |
| |
| static JSValue toJSValue(uint8_t value) |
| { |
| return jsNumber(value); |
| } |
| |
| static double toDouble(uint8_t value) |
| { |
| return static_cast<double>(value); |
| } |
| |
| static Type toNativeFromInt32(int32_t value) |
| { |
| return clamp(value); |
| } |
| |
| static Type toNativeFromUint32(uint32_t value) |
| { |
| return std::min(static_cast<uint32_t>(255), value); |
| } |
| |
| static Type toNativeFromDouble(double value) |
| { |
| if (std::isnan(value) || value < 0) |
| return 0; |
| if (value > 255) |
| return 255; |
| return static_cast<uint8_t>(lrint(value)); |
| } |
| |
| template<typename OtherAdaptor> |
| static typename OtherAdaptor::Type convertTo(uint8_t value) |
| { |
| return OtherAdaptor::toNativeFromInt32(value); |
| } |
| |
| static std::optional<Type> toNativeFromInt32WithoutCoercion(int32_t value) |
| { |
| if (value > maxValue || value < minValue) |
| return std::nullopt; |
| |
| return static_cast<Type>(value); |
| } |
| |
| static std::optional<Type> toNativeFromDoubleWithoutCoercion(double value) |
| { |
| uint8_t integer = static_cast<uint8_t>(value); |
| if (static_cast<double>(integer) != value) |
| return std::nullopt; |
| |
| return integer; |
| } |
| |
| private: |
| static uint8_t clamp(int32_t value) |
| { |
| if (value < 0) |
| return 0; |
| if (value > 255) |
| return 255; |
| return static_cast<uint8_t>(value); |
| } |
| }; |
| |
| } // namespace JSC |