solidity/libsolidity/codegen/MultiUseYulFunctionCollector.cpp

57 lines
1.7 KiB
C++

/*
This file is part of solidity.
solidity is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
solidity is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with solidity. If not, see <http://www.gnu.org/licenses/>.
*/
// SPDX-License-Identifier: GPL-3.0
/**
* Container of (unparsed) Yul functions identified by name which are meant to be generated
* only once.
*/
#include <libsolidity/codegen/MultiUseYulFunctionCollector.h>
#include <liblangutil/Exceptions.h>
using namespace std;
using namespace solidity;
using namespace solidity::frontend;
string MultiUseYulFunctionCollector::requestedFunctions()
{
string result;
for (auto const& [name, code]: m_requestedFunctions)
{
solAssert(code != "<<STUB<<", "");
// std::map guarantees ascending order when iterating through its keys.
result += code;
}
m_requestedFunctions.clear();
return result;
}
string MultiUseYulFunctionCollector::createFunction(string const& _name, function<string ()> const& _creator)
{
if (!m_requestedFunctions.count(_name))
{
m_requestedFunctions[_name] = "<<STUB<<";
string fun = _creator();
solAssert(!fun.empty(), "");
solAssert(fun.find("function " + _name + "(") != string::npos, "Function not properly named.");
m_requestedFunctions[_name] = std::move(fun);
}
return _name;
}