solidity/libyul/optimiser/ForLoopConditionIntoBody.cpp

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/*
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/ForLoopConditionIntoBody.h>
#include <libyul/AsmData.h>
#include <libdevcore/CommonData.h>
using namespace std;
using namespace dev;
using namespace yul;
void ForLoopConditionIntoBody::operator()(ForLoop& _forLoop)
{
if (_forLoop.condition->type() != typeid(Literal))
{
langutil::SourceLocation loc = locationOf(*_forLoop.condition);
_forLoop.body.statements.insert(
_forLoop.body.statements.begin(),
If {
loc,
make_unique<Expression>(
FunctionalInstruction {
loc,
eth::Instruction::ISZERO,
make_vector<Expression>(std::move(*_forLoop.condition))
}
),
Block {loc, make_vector<Statement>(Break{{}})}
}
);
_forLoop.condition = make_unique<Expression>(
Literal {
loc,
LiteralKind::Number,
"1"_yulstring,
{}
}
);
}
ASTModifier::operator()(_forLoop);
}