solidity/libyul/Object.h

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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
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/**
* Yul code and data object container.
*/
#pragma once
#include <libyul/AsmDataForward.h>
#include <libyul/YulString.h>
#include <libsolutil/Common.h>
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#include <memory>
#include <set>
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namespace solidity::yul
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{
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struct Dialect;
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struct AsmAnalysisInfo;
/**
* Generic base class for both Yul objects and Yul data.
*/
struct ObjectNode
{
virtual ~ObjectNode() = default;
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virtual std::string toString(Dialect const* _dialect) const = 0;
std::string toString() { return toString(nullptr); }
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/// Name of the object.
/// Can be empty since .yul files can also just contain code, without explicitly placing it in an object.
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YulString name;
};
/**
* Named data in Yul objects.
*/
struct Data: ObjectNode
{
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Data(YulString _name, bytes _data): data(std::move(_data)) { name = _name; }
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std::string toString(Dialect const* _dialect) const override;
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bytes data;
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};
/**
* Yul code and data object container.
*/
struct Object: ObjectNode
{
public:
/// @returns a (parseable) string representation. Includes types if @a _yul is set.
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std::string toString(Dialect const* _dialect) const override;
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/// @returns the set of names of data objects accessible from within the code of
/// this object, including the name of object itself
std::set<YulString> qualifiedDataNames() const;
/// @returns vector of subIDs if possible to reach subobject with @a _qualifiedName, throws otherwise
/// For "B.C" should return vector of two values if success (subId of B and subId of C in B).
/// In object "A" if called for "A.B" will return only one value (subId for B)
/// will return empty vector for @a _qualifiedName that equals to object name.
/// Example:
/// A1{ B2{ C3, D3 }, E2{ F3{ G4, K4, H4{ I5 } } } }
/// pathToSubObject("A1.E2.F3.H4") == {1, 0, 2}
/// pathToSubObject("E2.F3.H4") == {1, 0, 2}
/// pathToSubObject("A1.E2") == {1}
/// The path must not lead to a @a Data object (will throw in that case).
std::vector<size_t> pathToSubObject(YulString _qualifiedName) const;
/// sub id for object if it is subobject of another object, max value if it is not subobject
size_t subId = std::numeric_limits<size_t>::max();
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std::shared_ptr<Block> code;
std::vector<std::shared_ptr<ObjectNode>> subObjects;
std::map<YulString, size_t> subIndexByName;
std::shared_ptr<yul::AsmAnalysisInfo> analysisInfo;
};
}