solidity/libyul/optimiser/BlockDeepener.cpp
2019-05-13 17:30:00 +02:00

48 lines
1.4 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/>.
*/
#include <libyul/optimiser/BlockDeepener.h>
#include <libyul/AsmData.h>
#include <libdevcore/Visitor.h>
#include <libdevcore/CommonData.h>
#include <functional>
using namespace std;
using namespace dev;
using namespace yul;
void BlockDeepener::operator()(Block& _block)
{
ASTModifier::operator()(_block);
if (_block.statements.size() <= 1)
return ;
std::vector<Statement> result;
std::vector<Statement> *current = &result;
for (std::size_t i = 0; i < _block.statements.size() - 1; ++i)
{
current->emplace_back(std::move(_block.statements[i]));
current->emplace_back(Block{
_block.location,
{}
});
current = &boost::get<Block>(current->back()).statements;
}
current->emplace_back(std::move(_block.statements.back()));
_block.statements = std::move(result);
}