Method Advance

test/gtest/gtest.h:15019–15055

Advance should not be called on beyond-of-range iterators so no component iterators must be beyond end of range, either.

    // Advance should not be called on beyond-of-range iterators
    // so no component iterators must be beyond end of range, either.
    virtual void Advance() {
      assert(!AtEnd());
      ++current9_;
      if (current9_ == end9_) {
        current9_ = begin9_;
        ++current8_;
      }
      if (current8_ == end8_) {
        current8_ = begin8_;
        ++current7_;
      }
      if (current7_ == end7_) {
        current7_ = begin7_;
        ++current6_;
      }
      if (current6_ == end6_) {
        current6_ = begin6_;
        ++current5_;
      }
      if (current5_ == end5_) {
        current5_ = begin5_;
        ++current4_;
      }
      if (current4_ == end4_) {
        current4_ = begin4_;
        ++current3_;
      }
      if (current3_ == end3_) {
        current3_ = begin3_;
        ++current2_;
      }
      if (current2_ == end2_) {
        current2_ = begin2_;
        ++current1_;
      }
      ComputeCurrentValue();
    }
    virtual ParamIteratorInterface<ParamType>* Clone() const {
      return new Iterator(*this);
    }