solidity/libyul/optimiser/Utilities.cpp

49 lines
1.5 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/>.
*/
/**
* Some useful snippets for the optimiser.
*/
#include <libyul/optimiser/Utilities.h>
#include <libyul/AsmData.h>
#include <libyul/Exceptions.h>
#include <libdevcore/CommonData.h>
#include <boost/range/algorithm_ext/erase.hpp>
using namespace std;
using namespace dev;
using namespace yul;
void yul::removeEmptyBlocks(Block& _block)
{
auto isEmptyBlock = [](Statement const& _st) -> bool {
return _st.type() == typeid(Block) && boost::get<Block>(_st).statements.empty();
};
boost::range::remove_erase_if(_block.statements, isEmptyBlock);
}
u256 yul::valueOfNumberLiteral(Literal const& _literal)
{
assertThrow(_literal.kind == LiteralKind::Number, OptimizerException, "");
std::string const& literalString = _literal.value.str();
assertThrow(isValidDecimal(literalString) || isValidHex(literalString), OptimizerException, "");
return u256(literalString);
}