mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
91 lines
1.9 KiB
C++
91 lines
1.9 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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// SPDX-License-Identifier: GPL-3.0
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#pragma once
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#include <liblangutil/Exceptions.h>
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#include <iostream>
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#include <string>
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#include <variant>
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#include <vector>
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namespace solidity::smtutil
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{
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struct SMTLib2Expression {
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using args_t = std::vector<SMTLib2Expression>;
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std::variant<std::string, args_t> data;
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std::string toString() const;
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};
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inline bool isAtom(SMTLib2Expression const & expr)
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{
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return std::holds_alternative<std::string>(expr.data);
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}
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inline std::string const& asAtom(SMTLib2Expression const& expr)
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{
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solAssert(isAtom(expr));
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return std::get<std::string>(expr.data);
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}
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inline auto const& asSubExpressions(SMTLib2Expression const& expr)
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{
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solAssert(!isAtom(expr));
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return std::get<SMTLib2Expression::args_t>(expr.data);
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}
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inline auto& asSubExpressions(SMTLib2Expression& expr)
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{
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solAssert(!isAtom(expr));
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return std::get<SMTLib2Expression::args_t>(expr.data);
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}
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class SMTLib2Parser {
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public:
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class ParsingException {};
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SMTLib2Parser(std::istream& _input) :
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m_input(_input),
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m_token(static_cast<char>(m_input.get())) {}
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SMTLib2Expression parseExpression();
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bool isEOF() {
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skipWhitespace();
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return m_input.eof();
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}
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private:
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std::string parseToken();
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void skipWhitespace();
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char token() const {
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return m_token;
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}
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void advance();
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std::istream& m_input;
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char m_token = 0;
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};
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}
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