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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
#include <libyul/optimiser/BlockFlattener.h>
#include <libyul/AST.h>
#include <libsolutil/CommonData.h>
#include <functional>
using namespace std;
using namespace solidity;
using namespace solidity::yul;
using namespace solidity::util;
void BlockFlattener::operator()(Block& _block)
{
ASTModifier::operator()(_block);
iterateReplacing(
_block.statements,
[](Statement& _s) -> std::optional<vector<Statement>>
{
if (holds_alternative<Block>(_s))
return std::move(std::get<Block>(_s).statements);
else
return {};
}
);
}
void BlockFlattener::run(OptimiserStepContext&, Block& _ast)
{
BlockFlattener flattener;
for (auto& statement: _ast.statements)
if (auto* block = get_if<Block>(&statement))
flattener(*block);
else if (auto* function = get_if<FunctionDefinition>(&statement))
flattener(function->body);
else
yulAssert(false, "BlockFlattener requires the FunctionGrouper.");
}