mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
73 lines
1.8 KiB
C++
73 lines
1.8 KiB
C++
/*
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This file is part of solidity.
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solidity is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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solidity 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 General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with solidity. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <libsolidity/formal/SymbolicVariables.h>
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#include <libsmtutil/Sorts.h>
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#include <libsmtutil/SolverInterface.h>
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namespace solidity::frontend::smt
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{
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class EncodingContext;
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/**
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* Symbolic representation of the blockchain state.
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*/
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class SymbolicState
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{
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public:
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SymbolicState(EncodingContext& _context);
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void reset();
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/// Blockchain.
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//@{
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/// Value of `this` address.
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smtutil::Expression thisAddress();
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/// @returns the symbolic balance of address `this`.
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smtutil::Expression balance();
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/// @returns the symbolic balance of an address.
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smtutil::Expression balance(smtutil::Expression _address);
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/// Transfer _value from _from to _to.
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void transfer(smtutil::Expression _from, smtutil::Expression _to, smtutil::Expression _value);
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//@}
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private:
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/// Adds _value to _account's balance.
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void addBalance(smtutil::Expression _account, smtutil::Expression _value);
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EncodingContext& m_context;
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/// Symbolic `this` address.
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SymbolicAddressVariable m_thisAddress{
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"this",
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m_context
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};
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/// Symbolic balances.
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SymbolicArrayVariable m_balances{
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std::make_shared<smtutil::ArraySort>(smtutil::SortProvider::uintSort, smtutil::SortProvider::uintSort),
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"balances",
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m_context
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};
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};
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}
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