mirror of
https://github.com/danog/ton.git
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239 lines
9.1 KiB
C++
239 lines
9.1 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 2017-2019 Telegram Systems LLP
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*/
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#pragma once
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#include "vm/cells/DataCell.h"
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#include "vm/cells/VirtualCell.h"
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#include "vm/vmstate.h"
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#include "common/refint.h"
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#include "td/utils/ThreadSafeCounter.h"
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namespace vm {
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class CellSlice;
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class DataCell;
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class CellBuilder : public td::CntObject {
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public:
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struct CellWriteError {};
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struct CellCreateError {};
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private:
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unsigned bits;
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unsigned refs_cnt;
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std::array<Ref<Cell>, Cell::max_refs> refs;
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mutable unsigned char data[Cell::max_bytes];
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static td::NamedThreadSafeCounter::CounterRef get_thread_safe_counter() {
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static auto res = td::NamedThreadSafeCounter::get_default().get_counter("CellBuilder");
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return res;
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}
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public:
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CellBuilder();
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virtual ~CellBuilder() override;
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static Ref<Cell> create_pruned_branch(Ref<Cell> cell, td::uint32 new_level, td::uint32 virt_level = Cell::max_level);
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static Ref<DataCell> do_create_pruned_branch(Ref<Cell> cell, td::uint32 new_level,
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td::uint32 virt_level = Cell::max_level);
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static Ref<DataCell> create_merkle_proof(Ref<Cell> cell_proof);
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static Ref<DataCell> create_merkle_update(Ref<Cell> from_proof, Ref<Cell> to_proof);
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unsigned get_refs_cnt() const {
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return refs_cnt;
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}
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unsigned get_bits() const {
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return bits;
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}
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unsigned size_refs() const {
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return refs_cnt;
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}
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unsigned size() const {
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return bits;
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}
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unsigned size_ext() const {
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return (refs_cnt << 16) + bits;
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}
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unsigned remaining_bits() const {
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return Cell::max_bits - bits;
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}
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unsigned remaining_refs() const {
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return Cell::max_refs - refs_cnt;
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}
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const unsigned char* get_data() const {
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return data;
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}
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td::ConstBitPtr data_bits() const {
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return data;
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}
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Ref<Cell> get_ref(unsigned idx) const {
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return idx < refs_cnt ? refs[idx] : Ref<Cell>{};
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}
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void reset();
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CellBuilder& operator=(const CellBuilder&);
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CellBuilder& operator=(CellBuilder&&);
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CellBuilder& store_bytes(const char* str, std::size_t len);
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CellBuilder& store_bytes(const char* str, const char* end);
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CellBuilder& store_bytes(const unsigned char* str, std::size_t len);
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CellBuilder& store_bytes(const unsigned char* str, const unsigned char* end);
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CellBuilder& store_bytes(td::Slice s);
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bool store_bytes_bool(const unsigned char* str, std::size_t len);
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bool store_bytes_bool(const char* str, std::size_t len);
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bool store_bytes_bool(td::Slice s);
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CellBuilder& store_bits(const unsigned char* str, std::size_t bit_count, int bit_offset = 0);
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CellBuilder& store_bits(const char* str, std::size_t bit_count, int bit_offset = 0);
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CellBuilder& store_bits(td::ConstBitPtr bs, std::size_t bit_count);
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CellBuilder& store_bits(const td::BitSlice& bs);
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CellBuilder& store_bits_same(std::size_t bit_count, bool val);
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bool store_bits_bool(const unsigned char* str, std::size_t bit_count, int bit_offset = 0);
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bool store_bits_bool(td::ConstBitPtr bs, std::size_t bit_count);
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template <unsigned n>
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bool store_bits_bool(const td::BitArray<n>& ba) {
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return store_bits_bool(ba.cbits(), n);
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}
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bool store_bits_same_bool(std::size_t bit_count, bool val);
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CellBuilder& store_zeroes(std::size_t bit_count) {
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return store_bits_same(bit_count, false);
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}
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CellBuilder& store_ones(std::size_t bit_count) {
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return store_bits_same(bit_count, true);
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}
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bool store_zeroes_bool(std::size_t bit_count) {
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return store_bits_same_bool(bit_count, false);
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}
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bool store_ones_bool(std::size_t bit_count) {
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return store_bits_same_bool(bit_count, true);
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}
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td::BitSliceWrite reserve_slice(std::size_t bit_count);
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CellBuilder& reserve_slice(std::size_t bit_count, td::BitSliceWrite& bsw);
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bool store_long_bool(long long val, unsigned val_bits = 64);
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bool store_long_rchk_bool(long long val, unsigned val_bits = 64);
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bool store_ulong_rchk_bool(unsigned long long val, unsigned val_bits = 64);
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bool store_uint_less(unsigned upper_bound, unsigned long long val);
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bool store_uint_leq(unsigned upper_bound, unsigned long long val);
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CellBuilder& store_long(long long val, unsigned val_bits = 64);
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// bool store_long_top_bool(unsigned long long val, unsigned top_bits);
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CellBuilder& store_long_top(unsigned long long val, unsigned top_bits);
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bool store_bool_bool(bool val);
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bool store_int256_bool(const td::BigInt256& val, unsigned val_bits, bool sgnd = true);
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bool store_int256_bool(td::RefInt256 val, unsigned val_bits, bool sgnd = true);
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bool store_uint256_bool(const td::BigInt256& val, unsigned val_bits) {
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return store_int256_bool(val, val_bits, false);
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}
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bool store_uint256_bool(td::RefInt256 val, unsigned val_bits) {
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return store_int256_bool(std::move(val), val_bits, false);
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}
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CellBuilder& store_int256(const td::BigInt256& val, unsigned val_bits, bool sgnd = true);
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CellBuilder& store_uint256(const td::BigInt256& val, unsigned val_bits) {
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return store_int256(val, val_bits, false);
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}
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bool store_builder_ref_bool(vm::CellBuilder&& cb);
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bool store_ref_bool(Ref<Cell> r);
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CellBuilder& store_ref(Ref<Cell> r);
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bool append_data_cell_bool(const DataCell& cell);
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CellBuilder& append_data_cell(const DataCell& cell);
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bool append_data_cell_bool(Ref<DataCell> cell_ref);
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CellBuilder& append_data_cell(Ref<DataCell> cell_ref);
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bool append_builder_bool(const CellBuilder& cb);
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CellBuilder& append_builder(const CellBuilder& cb);
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bool append_builder_bool(Ref<CellBuilder> cb_ref);
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CellBuilder& append_builder(Ref<CellBuilder> cb_ref);
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bool append_cellslice_bool(const CellSlice& cs);
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CellBuilder& append_cellslice(const CellSlice& cs);
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bool append_cellslice_bool(Ref<CellSlice> cs_ref);
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CellBuilder& append_cellslice(Ref<CellSlice> cs_ref);
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bool append_cellslice_chk(const CellSlice& cs, unsigned size_ext);
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bool append_cellslice_chk(Ref<CellSlice> cs, unsigned size_ext);
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bool append_bitstring(const td::BitString& bs);
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bool append_bitstring(Ref<td::BitString> bs_ref);
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bool append_bitstring_chk(const td::BitString& bs, unsigned size);
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bool append_bitstring_chk(Ref<td::BitString> bs, unsigned size);
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bool append_bitslice(const td::BitSlice& bs);
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bool store_maybe_ref(Ref<Cell> cell);
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bool contents_equal(const CellSlice& cs) const;
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CellBuilder* make_copy() const override;
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bool can_extend_by(std::size_t bits) const;
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bool can_extend_by(std::size_t bits, unsigned refs) const;
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Ref<DataCell> finalize_copy(bool special = false) const;
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Ref<DataCell> finalize(bool special = false);
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Ref<DataCell> finalize_novm(bool special = false);
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bool finalize_to(Ref<Cell>& res, bool special = false) {
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return (res = finalize(special)).not_null();
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}
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CellSlice as_cellslice() const &;
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CellSlice as_cellslice() &&;
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Ref<CellSlice> as_cellslice_ref() const &;
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Ref<CellSlice> as_cellslice_ref() &&;
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static td::int64 get_total_cell_builders() {
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return get_thread_safe_counter().sum();
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}
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int get_serialized_size() const {
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return ((bits + 23) >> 3);
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}
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int serialize(unsigned char* buff, int buff_size) const;
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std::string serialize() const;
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std::string to_hex() const;
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const unsigned char* compute_hash(unsigned char buffer[Cell::hash_bytes]) const;
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const CellBuilder& ensure_pass(bool cond) const {
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ensure_throw(cond);
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return *this;
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}
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CellBuilder& ensure_pass(bool cond) {
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ensure_throw(cond);
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return *this;
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}
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void ensure_throw(bool cond) const {
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if (!cond) {
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throw CellCreateError{};
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}
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}
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private:
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void flush(unsigned char d[2]) const;
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bool prepare_reserve(std::size_t bit_count);
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bool can_extend_by_fast(unsigned bits_req) const {
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return (int)bits <= (int)(Cell::max_bits - bits_req);
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}
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bool can_extend_by_fast(unsigned bits_req, unsigned refs_req) const {
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return (int)bits <= (int)(Cell::max_bits - bits_req) && (int)refs_cnt <= (int)(Cell::max_refs - refs_req);
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}
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bool can_extend_by_fast2(unsigned bits_req) const {
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return bits + bits_req <= Cell::max_bits;
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}
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bool can_extend_by_fast2(unsigned bits_req, unsigned refs_req) const {
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return bits + bits_req <= Cell::max_bits && refs_cnt + refs_req <= Cell::max_refs;
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}
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};
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std::ostream& operator<<(std::ostream& os, const CellBuilder& cb);
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template <class T>
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CellBuilder& operator<<(CellBuilder& cb, const T& val) {
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return cb.ensure_pass(val.serialize(cb));
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}
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template <class T>
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Ref<CellBuilder>& operator<<(Ref<CellBuilder>& cb_ref, const T& val) {
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bool res = val.serialize(cb_ref.write());
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cb_ref->ensure_throw(res);
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return cb_ref;
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}
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} // namespace vm
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