mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
67 lines
1.6 KiB
C++
67 lines
1.6 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/SolverInterface.h>
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#include <libsolidity/formal/SymbolicVariables.h>
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namespace dev
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{
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namespace solidity
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{
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namespace smt
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{
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/**
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* Stores the context of the SMT encoding.
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*/
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class EncodingContext
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{
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public:
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EncodingContext(SolverInterface& _solver);
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/// Resets the entire context.
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void reset();
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/// Value of `this` address.
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smt::Expression thisAddress();
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/// @returns the symbolic balance of address `this`.
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smt::Expression balance();
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/// @returns the symbolic balance of an address.
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smt::Expression balance(smt::Expression _address);
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/// Transfer _value from _from to _to.
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void transfer(smt::Expression _from, smt::Expression _to, smt::Expression _value);
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private:
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/// Adds _value to _account's balance.
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void addBalance(smt::Expression _account, smt::Expression _value);
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SolverInterface& m_solver;
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/// Symbolic `this` address.
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std::unique_ptr<SymbolicAddressVariable> m_thisAddress;
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/// Symbolic balances.
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std::unique_ptr<SymbolicVariable> m_balances;
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};
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}
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}
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}
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