text: /*
   * Copyright (C) 2019 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. AND ITS CONTRIBUTORS ``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 ITS 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
  
  #if ENABLE(WEBGPU)
  
  #include "WHLSLCodeLocation.h"
  #include "WHLSLPropertyAccessExpression.h"
  #include <wtf/FastMalloc.h>
  #include <wtf/UniqueRef.h>
  
  namespace WebCore {
  
  namespace WHLSL {
  
  namespace AST {
  
  class IndexExpression final : public PropertyAccessExpression {
      WTF_MAKE_FAST_ALLOCATED;
  public:
      IndexExpression(CodeLocation location, UniqueRef<Expression>&& base, UniqueRef<Expression>&& index)
          : PropertyAccessExpression(location, Kind::Index, WTFMove(base))
          , m_index(WTFMove(index))
      {
  #if CPU(ADDRESS32)
          UNUSED_PARAM(m_padding);
  #endif
      }
  
      ~IndexExpression() = default;
  
      IndexExpression(const IndexExpression&) = delete;
      IndexExpression(IndexExpression&&) = default;
  
      Expression& indexExpression() { return m_index; }
      UniqueRef<Expression>& indexReference() { return m_index; }
      UniqueRef<Expression> takeIndex() { return WTFMove(m_index); }
  
  private:
      UniqueRef<Expression> m_index;
  #if CPU(ADDRESS32)
      // This is used to allow for replaceWith into a bigger type.
      char m_padding[4];
  #endif
  };
  
  } // namespace AST
  
  }
  
  }
  
  DEFINE_DEFAULT_DELETE(IndexExpression)
  
  SPECIALIZE_TYPE_TRAITS_WHLSL_EXPRESSION(IndexExpression, isIndexExpression())
  
  #endif
  