IAPrimitive.h

#ifndef IAPrimitive_h
#define IAPrimitive_h
 
#include<iostream>
#include "IATree.h"
 
typedef struct {
    bool isWithinBounds;
    
    bool isLowerBoundInclusive;
    double lowerBound;
 
    bool isUpperBoundInclusive;
    double upperBound;
} IABounds;
 
class IAPrimitive
{
public:
    virtual IABounds calculateBounds(Tree::IATree& tree) = 0;
 
    // Returns true if everything is ok and expression should be evaluated
    virtual bool calculateBoundsIfRootNode(void* result, Tree::Tree& tree) {
        Tree::IATree& iaTree = static_cast<Tree::IATree&>(tree);
        if (!iaTree.boundsCalculated) {
            // bounds haven't been calculated yet
            IABounds bounds = this->calculateBounds(iaTree);
            iaTree.boundsCalculated = true;
            tree.iNode_ = 0; // reset tree's node index pointer
            if (!bounds.isWithinBounds) {
                // tree not within bounds, delete expression
                double& arg = *(double*)result;
                arg = 1e14;
                return false;
            }
        }
        return true;
    }
};
 
typedef boost::shared_ptr<IAPrimitive> IAPrimitiveP;
 
#endif // IAPrimitive_h