unary_slice_expression.h

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//    |  /           |
//    ' /   __| _` | __|  _ \   __|
//    . \  |   (   | |   (   |\__ `
//   _|\_\_|  \__,_|\__|\___/ ____/
//                   Multi-Physics
//
//  License:         BSD License
//                   Kratos default license: kratos/license.txt
//
//  Main authors:    Suneth Warnakulasuriya
//
 
#pragma once
 
// System includes
#include <string>
 
// Project includes
#include "expression/expression.h"
 
namespace Kratos {
 
 
class KRATOS_API(KRATOS_CORE) UnarySliceExpression : public Expression {
public:
 
    using IndexType = std::size_t;
 
 
    UnarySliceExpression(
        Expression::ConstPointer pExpression,
        const IndexType Offset,
        const IndexType Stride);
 
 
    static Expression::Pointer Create(
        Expression::ConstPointer pExpression,
        const IndexType Offset,
        const IndexType Stride);
 
    double Evaluate(
        const IndexType EntityIndex,
        const IndexType EntityDataBeginIndex,
        const IndexType ComponentIndex) const override;
 
    const std::vector<IndexType> GetItemShape() const override;
 
    IndexType GetMaxDepth() const override;
 
    std::string Info() const override;
 
protected:
 
    const Expression::ConstPointer mpSourceExpression;
 
    const IndexType mOffset;
 
    const IndexType mStride;
 
    const IndexType mSourceStride;
 
};
 
} // namespace Kratos