mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
50 lines
1.6 KiB
C++
50 lines
1.6 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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#pragma once
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namespace solidity::yul
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{
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/**
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* Side effects of a user-defined or builtin function.
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*
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* Each of the three booleans represents a reachability condition. There is an implied
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* fourth alternative, which is going out of gas while executing the function. Since
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* this can always happen and depends on the supply of gas, it is not considered.
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*
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* If all three booleans are false, it means that the function always leads to infinite
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* recursion.
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*/
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struct ControlFlowSideEffects
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{
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/// If true, the function contains at least one reachable branch that terminates successfully.
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bool canTerminate = false;
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/// If true, the function contains at least one reachable branch that reverts.
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bool canRevert = false;
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/// If true, the function has a regular outgoing control-flow.
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bool canContinue = true;
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bool terminatesOrReverts() const
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{
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return (canTerminate || canRevert) && !canContinue;
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}
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};
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}
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