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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/>.
*/
// SPDX-License-Identifier: GPL-3.0
#pragma once
#include <libyul/ASTForward.h>
#include <libyul/optimiser/ASTWalker.h>
#include <libyul/optimiser/OptimiserStep.h>
namespace solidity::yul
{
/**
* Rewrites variable declarations so that all of them are initialized.
* Declarations like ``let x, y`` are split into multiple declaration
* statements.
* Only supports initializing with the zero literal for now.
*/
class VarDeclInitializer: public ASTModifier
{
public:
static constexpr char const* name{"VarDeclInitializer"};
static void run(OptimiserStepContext& _ctx, Block& _ast) { VarDeclInitializer{_ctx.dialect}(_ast); }
void operator()(Block& _block) override;
private:
explicit VarDeclInitializer(Dialect const& _dialect): m_dialect(_dialect) {}
Dialect const& m_dialect;
};
}