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152 lines
4.1 KiB
C++
152 lines
4.1 KiB
C++
//------------------------------------------------------------------------------
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/*
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This file is part of rippled: https://github.com/ripple/rippled
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Copyright (c) 2012, 2013 Ripple Labs Inc.
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Permission to use, copy, modify, and/or distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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//==============================================================================
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#include <ripple/basics/LocalValue.h>
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#include <ripple/protocol/Feature.h>
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#include <ripple/protocol/Rules.h>
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#include <optional>
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namespace ripple {
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namespace {
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// Use a static inside a function to help prevent order-of-initialization issues
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LocalValue<std::optional<Rules>>&
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getCurrentTransactionRulesRef()
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{
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static LocalValue<std::optional<Rules>> r;
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return r;
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}
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} // namespace
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std::optional<Rules> const&
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getCurrentTransactionRules()
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{
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return *getCurrentTransactionRulesRef();
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}
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void
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setCurrentTransactionRules(std::optional<Rules> r)
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{
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*getCurrentTransactionRulesRef() = std::move(r);
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}
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class Rules::Impl
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{
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private:
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std::unordered_set<uint256, hardened_hash<>> set_;
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std::optional<uint256> digest_;
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std::unordered_set<uint256, beast::uhash<>> const& presets_;
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public:
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explicit Impl(std::unordered_set<uint256, beast::uhash<>> const& presets)
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: presets_(presets)
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{
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}
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Impl(
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std::unordered_set<uint256, beast::uhash<>> const& presets,
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std::optional<uint256> const& digest,
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STVector256 const& amendments)
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: digest_(digest), presets_(presets)
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{
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set_.reserve(amendments.size());
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set_.insert(amendments.begin(), amendments.end());
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}
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std::unordered_set<uint256, beast::uhash<>> const&
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presets() const
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{
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return presets_;
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}
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bool
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enabled(uint256 const& feature) const
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{
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if (presets_.count(feature) > 0)
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return true;
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return set_.count(feature) > 0;
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}
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bool
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operator==(Impl const& other) const
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{
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if (!digest_ && !other.digest_)
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return true;
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if (!digest_ || !other.digest_)
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return false;
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assert(presets_ == other.presets_);
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return *digest_ == *other.digest_;
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}
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};
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Rules::Rules(std::unordered_set<uint256, beast::uhash<>> const& presets)
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: impl_(std::make_shared<Impl>(presets))
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{
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}
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Rules::Rules(
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std::unordered_set<uint256, beast::uhash<>> const& presets,
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std::optional<uint256> const& digest,
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STVector256 const& amendments)
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: impl_(std::make_shared<Impl>(presets, digest, amendments))
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{
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}
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std::unordered_set<uint256, beast::uhash<>> const&
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Rules::presets() const
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{
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return impl_->presets();
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}
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bool
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Rules::enabled(uint256 const& feature) const
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{
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assert(impl_);
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// The functionality of the "NonFungibleTokensV1_1" amendment is
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// precisely the functionality of the following three amendments
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// so if their status is ever queried individually, we inject an
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// extra check here to simplify the checking elsewhere.
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if (feature == featureNonFungibleTokensV1 ||
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feature == fixNFTokenNegOffer || feature == fixNFTokenDirV1)
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{
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if (impl_->enabled(featureNonFungibleTokensV1_1))
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return true;
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}
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return impl_->enabled(feature);
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}
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bool
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Rules::operator==(Rules const& other) const
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{
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assert(impl_ && other.impl_);
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if (impl_.get() == other.impl_.get())
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return true;
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return *impl_ == *other.impl_;
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}
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bool
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Rules::operator!=(Rules const& other) const
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{
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return !(*this == other);
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}
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} // namespace ripple
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