mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
147 lines
3.9 KiB
C++
147 lines
3.9 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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/**
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* Some useful snippets for the optimiser.
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*/
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#include <libyul/Utilities.h>
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#include <libyul/AsmData.h>
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#include <libyul/Exceptions.h>
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#include <libsolutil/CommonData.h>
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#include <libsolutil/FixedHash.h>
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#include <boost/algorithm/string.hpp>
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#include <algorithm>
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#include <iterator>
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#include <sstream>
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#include <vector>
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using namespace std;
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using namespace solidity;
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using namespace solidity::yul;
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using namespace solidity::util;
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using boost::split;
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using boost::is_any_of;
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string solidity::yul::reindent(string const& _code)
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{
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int constexpr indentationWidth = 4;
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auto const static countBraces = [](string const& _s) noexcept -> int
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{
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auto const i = _s.find("//");
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auto const e = i == _s.npos ? end(_s) : next(begin(_s), i);
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auto const opening = count_if(begin(_s), e, [](auto ch) { return ch == '{' || ch == '('; });
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auto const closing = count_if(begin(_s), e, [](auto ch) { return ch == '}' || ch == ')'; });
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return opening - closing;
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};
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vector<string> lines;
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split(lines, _code, is_any_of("\n"));
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for (string& line: lines)
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boost::trim(line);
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stringstream out;
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int depth = 0;
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for (string const& line: lines)
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{
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int const diff = countBraces(line);
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if (diff < 0)
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depth += diff;
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if (!line.empty())
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{
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for (int i = 0; i < depth * indentationWidth; ++i)
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out << ' ';
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out << line;
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}
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out << '\n';
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if (diff > 0)
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depth += diff;
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}
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return out.str();
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}
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u256 solidity::yul::valueOfNumberLiteral(Literal const& _literal)
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{
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yulAssert(_literal.kind == LiteralKind::Number, "Expected number literal!");
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std::string const& literalString = _literal.value.str();
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yulAssert(isValidDecimal(literalString) || isValidHex(literalString), "Invalid number literal!");
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return u256(literalString);
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}
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u256 solidity::yul::valueOfStringLiteral(Literal const& _literal)
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{
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yulAssert(_literal.kind == LiteralKind::String, "Expected string literal!");
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yulAssert(_literal.value.str().size() <= 32, "Literal string too long!");
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return u256(h256(_literal.value.str(), h256::FromBinary, h256::AlignLeft));
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}
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u256 yul::valueOfBoolLiteral(Literal const& _literal)
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{
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yulAssert(_literal.kind == LiteralKind::Boolean, "Expected bool literal!");
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if (_literal.value == "true"_yulstring)
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return u256(1);
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else if (_literal.value == "false"_yulstring)
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return u256(0);
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yulAssert(false, "Unexpected bool literal value!");
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}
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u256 solidity::yul::valueOfLiteral(Literal const& _literal)
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{
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switch (_literal.kind)
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{
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case LiteralKind::Number:
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return valueOfNumberLiteral(_literal);
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case LiteralKind::Boolean:
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return valueOfBoolLiteral(_literal);
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case LiteralKind::String:
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return valueOfStringLiteral(_literal);
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default:
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yulAssert(false, "Unexpected literal kind!");
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}
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}
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template<>
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bool Less<Literal>::operator()(Literal const& _lhs, Literal const& _rhs) const
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{
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if (std::make_tuple(_lhs.kind, _lhs.type) != std::make_tuple(_rhs.kind, _rhs.type))
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return std::make_tuple(_lhs.kind, _lhs.type) < std::make_tuple(_rhs.kind, _rhs.type);
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if (_lhs.kind == LiteralKind::Number)
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return valueOfNumberLiteral(_lhs) < valueOfNumberLiteral(_rhs);
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else
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return _lhs.value < _rhs.value;
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}
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bool SwitchCaseCompareByLiteralValue::operator()(Case const* _lhs, Case const* _rhs) const
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{
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yulAssert(_lhs && _rhs, "");
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return Less<Literal*>{}(_lhs->value.get(), _rhs->value.get());
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}
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