Class VersionBitsConditionChecker

src/versionbits.cpp:190–221

* Class to implement versionbits logic. */

 * Class to implement versionbits logic.
 */
class VersionBitsConditionChecker : public AbstractThresholdConditionChecker {
private:
    const Consensus::DeploymentPos id;

protected:
    int64_t BeginTime(const Consensus::Params& params) const override { return params.vDeployments[id].nStartTime; }
    int64_t EndTime(const Consensus::Params& params) const override { return params.vDeployments[id].nTimeout; }
    int MinActivationHeight(const Consensus::Params& params) const override { return params.vDeployments[id].min_activation_height; }
    int Period(const Consensus::Params& params) const override {
        if (params.vDeployments[id].nPeriod) {
            return *params.vDeployments[id].nPeriod;
        } else {
            return params.nMinerConfirmationWindow;
        }
    }
    int Threshold(const Consensus::Params& params) const override {
        if (params.vDeployments[id].nThreshold) {
            return *params.vDeployments[id].nThreshold;
        } else {
            return params.nRuleChangeActivationThreshold;
        }
    }

    bool Condition(const CBlockIndex* pindex, const Consensus::Params& params) const override
    {
        return (((pindex->nVersion & VERSIONBITS_TOP_MASK) == VERSIONBITS_TOP_BITS) && (pindex->nVersion & Mask(params)) != 0);
    }

public:
    explicit VersionBitsConditionChecker(Consensus::DeploymentPos id_) : id(id_) {}
    uint32_t Mask(const Consensus::Params& params) const { return ((uint32_t)1) << params.vDeployments[id].bit; }
};

} // namespace