deploymentstatus.cpp

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// Copyright (c) 2020 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.

#include <deploymentstatus.h>

#include <consensus/params.h>
#include <versionbits.h>

#include <type_traits>

VersionBitsCache g_versionbitscache;

/* Basic sanity checking for BuriedDeployment/DeploymentPos enums and
 * ValidDeployment check */

static_assert(ValidDeployment(Consensus::DEPLOYMENT_TESTDUMMY), "sanity check of DeploymentPos failed (TESTDUMMY not valid)");
static_assert(!ValidDeployment(Consensus::MAX_VERSION_BITS_DEPLOYMENTS), "sanity check of DeploymentPos failed (MAX value considered valid)");
static_assert(!ValidDeployment(static_cast<Consensus::BuriedDeployment>(Consensus::DEPLOYMENT_TESTDUMMY)), "sanity check of BuriedDeployment failed (overlaps with DeploymentPos)");

/* ValidDeployment only checks upper bounds for ensuring validity.
 * This checks that the lowest possible value or the type is also a
 * (specific) valid deployment so that lower bounds don't need to be checked.
 */

template<typename T, T x>
static constexpr bool is_minimum()
{
    using U = typename std::underlying_type<T>::type;
    return x == std::numeric_limits<U>::min();
}

static_assert(is_minimum<Consensus::BuriedDeployment, Consensus::DEPLOYMENT_HEIGHTINCB>(), "heightincb is not minimum value for BuriedDeployment");
static_assert(is_minimum<Consensus::DeploymentPos, Consensus::DEPLOYMENT_TESTDUMMY>(), "testdummy is not minimum value for DeploymentPos");