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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/**
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* Contains an abstract base class representing a selection of elements from a collection
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* and its concrete implementations.
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*/
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#pragma once
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#include <vector>
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namespace solidity::phaser
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{
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/**
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* Abstract base class for selections of elements from a collection.
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*
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* An instance of this class represents a specific method of selecting a set of elements from
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* containers of arbitrary sizes. The set of selected elements is always a subset of the container
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* but may indicate the same element more than once. The selection may or may not be fixed - it's
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* up to a specific implementation whether subsequent calls for the same container produce the same
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* indices or not.
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*
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* Derived classes are meant to override the @a materialise() method.
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* This method is expected to produce indices of selected elements given the size of the collection.
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*/
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class Selection
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{
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public:
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Selection() = default;
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Selection(Selection const&) = delete;
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Selection& operator=(Selection const&) = delete;
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virtual ~Selection() = default;
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virtual std::vector<size_t> materialise(size_t _poolSize) const = 0;
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};
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}
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