mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
97 lines
2.3 KiB
C++
97 lines
2.3 KiB
C++
/*
|
|
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/>.
|
|
*/
|
|
/**
|
|
* Generator for code that handles LValues.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <string>
|
|
#include <ostream>
|
|
|
|
namespace dev
|
|
{
|
|
namespace solidity
|
|
{
|
|
|
|
class VariableDeclaration;
|
|
class IRGenerationContext;
|
|
class Type;
|
|
|
|
/**
|
|
* Abstract class used to retrieve, delete and store data in LValues.
|
|
*/
|
|
class IRLValue
|
|
{
|
|
protected:
|
|
IRLValue(IRGenerationContext& _context, Type const* _type = nullptr):
|
|
m_context(_context),
|
|
m_type(_type)
|
|
{}
|
|
|
|
public:
|
|
virtual ~IRLValue() = default;
|
|
/// @returns an expression to retrieve the value of the lvalue.
|
|
virtual std::string retrieveValue() const = 0;
|
|
/// Returns code that stores the value of @a _value (should be an identifier)
|
|
/// of type @a _type in the lvalue. Might perform type conversion.
|
|
virtual std::string storeValue(std::string const& _value, Type const& _type) const = 0;
|
|
|
|
protected:
|
|
IRGenerationContext& m_context;
|
|
Type const* m_type;
|
|
};
|
|
|
|
class IRLocalVariable: public IRLValue
|
|
{
|
|
public:
|
|
IRLocalVariable(
|
|
IRGenerationContext& _context,
|
|
VariableDeclaration const& _varDecl
|
|
);
|
|
std::string retrieveValue() const override { return m_variableName; }
|
|
std::string storeValue(std::string const& _value, Type const& _type) const override;
|
|
|
|
private:
|
|
std::string m_variableName;
|
|
};
|
|
|
|
class IRStorageItem: public IRLValue
|
|
{
|
|
public:
|
|
IRStorageItem(
|
|
IRGenerationContext& _context,
|
|
VariableDeclaration const& _varDecl
|
|
);
|
|
IRStorageItem(
|
|
IRGenerationContext& _context,
|
|
std::string _slot,
|
|
unsigned _offset,
|
|
Type const& _type
|
|
);
|
|
std::string retrieveValue() const override;
|
|
std::string storeValue(std::string const& _value, Type const& _type) const override;
|
|
|
|
private:
|
|
std::string m_slot;
|
|
unsigned m_offset;
|
|
};
|
|
|
|
|
|
}
|
|
}
|