Class SequenceGenerator

tests/deprecated/test_utilities.cpp:1683–1719

/// @private
template <typename T>
class SequenceGenerator : public Catch::Generators::IGenerator<T*> {
    T* digits;
    int len;
    T maxDigit;
    int ind;
    int seqLen;
public:
    SequenceGenerator(T maxDigit_, int numDigits) {
        ind = 0;
        len = numDigits;
        maxDigit = maxDigit_;
        seqLen = (int) pow(1 + (int) maxDigit, len);
        digits = (T*) malloc(numDigits * sizeof *digits);
        for (int i=0; i<numDigits; i++)
            digits[i] = (T) 0;
        ind++;
    }

    T* const& get() const override {
        return digits;
    }
    
    bool next() override {
        bool isNext = (ind++) < seqLen;
        if (isNext) {
            int i=0;
            while (digits[i] == maxDigit)
                digits[i++] = (T) 0;
            digits[i] = (T) ((int) digits[i] + 1);
        }
        return isNext;
    }
    
    ~SequenceGenerator() {
        free(digits);
    }
};
Catch::Generators::GeneratorWrapper<int*> bitsets(int numBits) {    
    return Catch::Generators::GeneratorWrapper<int*>(
        Catch::Detail::make_unique<SequenceGenerator<int>>(1, numBits));