mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
49 lines
1.6 KiB
C++
49 lines
1.6 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/>.
|
|
*/
|
|
/**
|
|
* Optimiser component that uses the simplification rules to simplify expressions.
|
|
*/
|
|
|
|
#include <libjulia/optimiser/ExpressionSimplifier.h>
|
|
|
|
#include <libjulia/optimiser/SimplificationRules.h>
|
|
#include <libjulia/optimiser/Semantics.h>
|
|
|
|
#include <libsolidity/inlineasm/AsmData.h>
|
|
|
|
#include <libdevcore/CommonData.h>
|
|
|
|
using namespace std;
|
|
using namespace dev;
|
|
using namespace dev::julia;
|
|
using namespace dev::solidity;
|
|
|
|
|
|
void ExpressionSimplifier::visit(Expression& _expression)
|
|
{
|
|
ASTModifier::visit(_expression);
|
|
while (auto match = SimplificationRules::findFirstMatch(_expression))
|
|
{
|
|
// Do not apply the rule if it removes non-constant parts of the expression.
|
|
// TODO: The check could actually be less strict than "movable".
|
|
// We only require "Does not cause side-effects".
|
|
if (match->removesNonConstants && !MovableChecker(_expression).movable())
|
|
return;
|
|
_expression = match->action().toExpression(locationOf(_expression));
|
|
}
|
|
}
|