Creator.hpp

Go to the documentation of this file.

#ifndef COMSERVATORY_CREATOR_HPP
#define COMSERVATORY_CREATOR_HPP
 
#include <stdexcept>
 
#include "Field.hpp"
 
namespace comservatory {
 
struct FieldCreator {
    virtual Field* create(Type t, size_t n, bool dummy) const = 0;
 
    virtual ~FieldCreator() {}
};
 
template<bool validate_only>
struct DefaultFieldCreator : public FieldCreator {
    Field* create(Type observed, size_t n, bool dummy) const {
        Field* ptr;
 
        switch (observed) {
            case STRING:
                if (dummy || validate_only) {
                    ptr = new DummyStringField(n);
                } else {
                    ptr = new FilledStringField(n);
                }
                break;
            case NUMBER:
                if (dummy || validate_only) {
                    ptr = new DummyNumberField(n);
                } else {
                    ptr = new FilledNumberField(n);
                }
                break;
            case BOOLEAN:
                if (dummy || validate_only) {
                    ptr = new DummyBooleanField(n);
                } else {
                    ptr = new FilledBooleanField(n);
                }
                break;
            case COMPLEX:
                if (dummy || validate_only) {
                    ptr = new DummyComplexField(n);
                } else {
                    ptr = new FilledComplexField(n);
                }
                break;
            default:
                throw std::runtime_error("unrecognized type during field creation");
        }
 
        return ptr;
    }
};
}
 
#endif