AList.h

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#ifndef OPAL_AList_HH
#define OPAL_AList_HH
 
// ------------------------------------------------------------------------
// $RCSfile: AList.h,v $
// ------------------------------------------------------------------------
// $Revision: 1.2 $
// ------------------------------------------------------------------------
// Copyright: see Copyright.readme
// ------------------------------------------------------------------------
//
// Template class: AList<T>
//
// ------------------------------------------------------------------------
//
// $Date: 2002/01/17 22:18:36 $
// $Author: jsberg $
//
// ------------------------------------------------------------------------
 
#include <iostream>
#include <vector>
#include "AbstractObjects/Expressions.h"
#include "Expressions/SConstant.h"
 
namespace Expressions {
 
    // Template Class AList
    // ----------------------------------------------------------------------
    //  Each scalar expression is evaluated separately, and its result is
    //  appended to the result array.
 
    template <class T>
    class AList : public OArray<T> {
    public:
        //  Construct empty array.
        AList();
 
        //  Use an array of scalar expressions.
        explicit AList(const ArrayOfPtrs<T>&);
 
        AList(const AList&);
        virtual ~AList();
 
        virtual OArray<T>* clone() const;
 
        virtual std::vector<T> evaluate() const;
 
        virtual void print(std::ostream&, int precedence = 99) const;
 
    protected:
        ArrayOfPtrs<T> itsValue;
 
    private:
        // Not implemented.
        void operator=(const AList&);
    };
 
    // Implementation
    // ------------------------------------------------------------------------
 
    template <class T>
    AList<T>::AList() : itsValue() {}
 
    template <class T>
    AList<T>::AList(const AList<T>& rhs) : OArray<T>(rhs), itsValue(rhs.itsValue) {}
 
    template <class T>
    AList<T>::AList(const ArrayOfPtrs<T>& value) : itsValue(value) {}
 
    template <class T>
    AList<T>::~AList() {}
 
    template <class T>
    OArray<T>* AList<T>::clone() const {
        return new AList<T>(*this);
    }
 
    template <class T>
    std::vector<T> AList<T>::evaluate() const {
        std::vector<T> result(itsValue.size(), T(0));
 
        for (typename ArrayOfPtrs<T>::size_type i = 0; i < itsValue.size(); ++i) {
            result[i] = itsValue[i]->evaluate();
        }
 
        return result;
    }
 
    template <class T>
    void AList<T>::print(std::ostream& os, int /*precedence*/) const {
        os << '{';
        typename ArrayOfPtrs<T>::const_iterator i = itsValue.begin();
 
        while (i != itsValue.end()) {
            (*i)->print(os, 0);
            if (++i == itsValue.end()) break;
            os << ',';
        }
 
        os << '}';
    }
 
}  // namespace Expressions
 
#endif  // OPAL_AList_HH