mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
53 lines
1.7 KiB
C++
53 lines
1.7 KiB
C++
/*
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This file is part of solidity.
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solidity is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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solidity is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with solidity. If not, see <http://www.gnu.org/licenses/>.
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*/
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// SPDX-License-Identifier: GPL-3.0
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/**
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* Component that checks whether all variables are reachable on the stack.
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*/
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#pragma once
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#include <libyul/Dialect.h>
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#include <libyul/ASTForward.h>
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#include <libyul/Object.h>
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#include <map>
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#include <memory>
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namespace solidity::yul
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{
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/**
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* Component that checks whether all variables are reachable on the stack and
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* provides a mapping from function name to the largest stack difference found
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* in that function (no entry present if that function is compilable), as well
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* as the set of unreachable variables for each function.
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*
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* This only works properly if the outermost block is compilable and
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* functions are not nested. Otherwise, it might miss reporting some functions.
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*
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* Only checks the code of the object itself, does not descend into sub-objects.
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*/
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struct CompilabilityChecker
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{
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CompilabilityChecker(Dialect const& _dialect, Object const& _object, bool _optimizeStackAllocation);
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std::map<YulString, std::set<YulString>> unreachableVariables;
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std::map<YulString, int> stackDeficit;
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};
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}
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