mirror of
https://github.com/ton-blockchain/ton
synced 2025-03-09 15:40:10 +00:00
100 lines
2.4 KiB
C++
100 lines
2.4 KiB
C++
/*
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This file is part of TON Blockchain Library.
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TON Blockchain Library is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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TON Blockchain Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with TON Blockchain Library. If not, see <http://www.gnu.org/licenses/>.
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Copyright 2017-2020 Telegram Systems LLP
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*/
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#pragma once
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#include "td/utils/StorerBase.h"
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#include "td/utils/common.h"
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#include "td/utils/Slice.h"
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#include "td/utils/tl_storers.h"
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#include <cstring>
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#include <limits>
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namespace td {
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class SliceStorer : public Storer {
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Slice slice;
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public:
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explicit SliceStorer(Slice slice) : slice(slice) {
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}
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size_t size() const override {
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return slice.size();
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}
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size_t store(uint8 *ptr) const override {
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std::memcpy(ptr, slice.ubegin(), slice.size());
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return slice.size();
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}
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};
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inline SliceStorer create_storer(Slice slice) {
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return SliceStorer(slice);
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}
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class ConcatStorer : public Storer {
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const Storer &a_;
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const Storer &b_;
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public:
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ConcatStorer(const Storer &a, const Storer &b) : a_(a), b_(b) {
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}
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size_t size() const override {
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return a_.size() + b_.size();
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}
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size_t store(uint8 *ptr) const override {
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uint8 *ptr_save = ptr;
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ptr += a_.store(ptr);
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ptr += b_.store(ptr);
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return ptr - ptr_save;
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}
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};
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inline ConcatStorer create_storer(const Storer &a, const Storer &b) {
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return ConcatStorer(a, b);
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}
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template <class T>
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class DefaultStorer : public Storer {
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public:
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explicit DefaultStorer(const T &object) : object_(object) {
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}
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size_t size() const override {
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if (size_ == std::numeric_limits<size_t>::max()) {
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size_ = tl_calc_length(object_);
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}
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return size_;
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}
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size_t store(uint8 *ptr) const override {
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return tl_store_unsafe(object_, ptr);
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}
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private:
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mutable size_t size_ = std::numeric_limits<size_t>::max();
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const T &object_;
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};
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template <class T>
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DefaultStorer<T> create_default_storer(const T &from) {
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return DefaultStorer<T>(from);
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}
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} // namespace td
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