solidity/libsolidity/codegen/ir/IRLValue.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
/**
* Classes that store locations of lvalues.
*/
#pragma once
#include <libsolidity/codegen/ir/IRVariable.h>
#include <variant>
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namespace solidity::frontend
{
class Type;
struct IRLValue
{
Type const& type;
struct Stack
{
IRVariable variable;
};
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struct Immutable
{
VariableDeclaration const* variable = nullptr;
};
struct Storage
{
std::string const slot;
/// unsigned: Used when the offset is known at compile time, uses optimized
/// functions
/// string: Used when the offset is determined at run time
std::variant<std::string, unsigned> const offset;
std::string offsetString() const
{
if (std::holds_alternative<unsigned>(offset))
return std::to_string(std::get<unsigned>(offset));
else
return std::get<std::string>(offset);
}
};
struct Memory
{
std::string const address;
bool byteArrayElement = false;
};
struct Tuple
{
std::vector<std::optional<IRLValue>> components;
};
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std::variant<Stack, Immutable, Storage, Memory, Tuple> kind;
};
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}