| /* |
| * Copyright (C) 2013-2018 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 "JSType.h" |
| #include <wtf/PrintStream.h> |
| |
| namespace JSC { |
| |
| struct ClassInfo; |
| |
| // Keep in sync with the order of JSType. |
| #define FOR_EACH_TYPED_ARRAY_TYPE_EXCLUDING_DATA_VIEW(macro) \ |
| macro(Int8) \ |
| macro(Uint8) \ |
| macro(Uint8Clamped) \ |
| macro(Int16) \ |
| macro(Uint16) \ |
| macro(Int32) \ |
| macro(Uint32) \ |
| macro(Float32) \ |
| macro(Float64) |
| |
| #define FOR_EACH_TYPED_ARRAY_TYPE(macro) \ |
| FOR_EACH_TYPED_ARRAY_TYPE_EXCLUDING_DATA_VIEW(macro) \ |
| macro(DataView) |
| |
| enum TypedArrayType { |
| NotTypedArray, |
| #define DECLARE_TYPED_ARRAY_TYPE(name) Type ## name, |
| FOR_EACH_TYPED_ARRAY_TYPE(DECLARE_TYPED_ARRAY_TYPE) |
| #undef DECLARE_TYPED_ARRAY_TYPE |
| }; |
| |
| #define ASSERT_TYPED_ARRAY_TYPE(name) \ |
| static_assert(static_cast<uint32_t>(Type ## name) == (static_cast<uint32_t>(name ## ArrayType) - FirstTypedArrayType + static_cast<uint32_t>(TypeInt8)), ""); |
| FOR_EACH_TYPED_ARRAY_TYPE_EXCLUDING_DATA_VIEW(ASSERT_TYPED_ARRAY_TYPE) |
| #undef ASSERT_TYPED_ARRAY_TYPE |
| |
| static_assert(TypeDataView == (DataViewType - FirstTypedArrayType + TypeInt8), ""); |
| |
| inline unsigned toIndex(TypedArrayType type) |
| { |
| return static_cast<unsigned>(type) - 1; |
| } |
| |
| inline TypedArrayType indexToTypedArrayType(unsigned index) |
| { |
| TypedArrayType result = static_cast<TypedArrayType>(index + 1); |
| ASSERT(result >= TypeInt8 && result <= TypeDataView); |
| return result; |
| } |
| |
| inline bool isTypedView(TypedArrayType type) |
| { |
| switch (type) { |
| case NotTypedArray: |
| case TypeDataView: |
| return false; |
| default: |
| return true; |
| } |
| } |
| |
| inline unsigned logElementSize(TypedArrayType type) |
| { |
| switch (type) { |
| case NotTypedArray: |
| break; |
| case TypeInt8: |
| case TypeUint8: |
| case TypeUint8Clamped: |
| case TypeDataView: |
| return 0; |
| case TypeInt16: |
| case TypeUint16: |
| return 1; |
| case TypeInt32: |
| case TypeUint32: |
| case TypeFloat32: |
| return 2; |
| case TypeFloat64: |
| return 3; |
| } |
| RELEASE_ASSERT_NOT_REACHED(); |
| return 0; |
| } |
| |
| inline size_t elementSize(TypedArrayType type) |
| { |
| return static_cast<size_t>(1) << logElementSize(type); |
| } |
| |
| const ClassInfo* constructorClassInfoForType(TypedArrayType); |
| |
| inline TypedArrayType typedArrayTypeForType(JSType type) |
| { |
| if (type >= FirstTypedArrayType && type <= LastTypedArrayType) |
| return static_cast<TypedArrayType>(type - FirstTypedArrayType + TypeInt8); |
| return NotTypedArray; |
| } |
| |
| inline JSType typeForTypedArrayType(TypedArrayType type) |
| { |
| if (type >= TypeInt8 && type <= TypeDataView) |
| return static_cast<JSType>(type - TypeInt8 + FirstTypedArrayType); |
| |
| RELEASE_ASSERT_NOT_REACHED(); |
| return Int8ArrayType; |
| } |
| |
| inline bool isInt(TypedArrayType type) |
| { |
| switch (type) { |
| case TypeInt8: |
| case TypeUint8: |
| case TypeUint8Clamped: |
| case TypeInt16: |
| case TypeUint16: |
| case TypeInt32: |
| case TypeUint32: |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| inline bool isFloat(TypedArrayType type) |
| { |
| switch (type) { |
| case TypeFloat32: |
| case TypeFloat64: |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| inline bool isSigned(TypedArrayType type) |
| { |
| switch (type) { |
| case TypeInt8: |
| case TypeInt16: |
| case TypeInt32: |
| case TypeFloat32: |
| case TypeFloat64: |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| inline bool isClamped(TypedArrayType type) |
| { |
| return type == TypeUint8Clamped; |
| } |
| |
| } // namespace JSC |
| |
| namespace WTF { |
| |
| void printInternal(PrintStream&, JSC::TypedArrayType); |
| |
| } // namespace WTF |