mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
104 lines
3.1 KiB
C++
104 lines
3.1 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.
|
|
*/
|
|
|
|
#include <libsolidity/codegen/ir/IRLValue.h>
|
|
|
|
#include <libsolidity/codegen/ir/IRGenerationContext.h>
|
|
#include <libsolidity/codegen/YulUtilFunctions.h>
|
|
#include <libsolidity/ast/AST.h>
|
|
|
|
#include <libdevcore/Whiskers.h>
|
|
|
|
using namespace std;
|
|
using namespace dev;
|
|
using namespace dev::solidity;
|
|
|
|
IRLocalVariable::IRLocalVariable(
|
|
ostream& _code,
|
|
IRGenerationContext& _context,
|
|
VariableDeclaration const& _varDecl
|
|
):
|
|
IRLValue(_code, _context, _varDecl.annotation().type),
|
|
m_variableName(_context.localVariableName(_varDecl))
|
|
{
|
|
}
|
|
|
|
void IRLocalVariable::storeValue(string const& _value, Type const& _type) const
|
|
{
|
|
solAssert(_type == *m_type, "Storing different types - not necessarily a problem.");
|
|
m_code << m_variableName << " := " << _value << "\n";
|
|
}
|
|
|
|
IRStorageItem::IRStorageItem(
|
|
ostream& _code,
|
|
IRGenerationContext& _context,
|
|
VariableDeclaration const& _varDecl
|
|
):
|
|
IRLValue(_code, _context, _varDecl.annotation().type)
|
|
{
|
|
u256 slot;
|
|
unsigned offset;
|
|
std::tie(slot, offset) = _context.storageLocationOfVariable(_varDecl);
|
|
m_slot = toCompactHexWithPrefix(slot);
|
|
m_offset = offset;
|
|
}
|
|
|
|
string IRStorageItem::retrieveValue() const
|
|
{
|
|
if (!m_type->isValueType())
|
|
return m_slot;
|
|
solUnimplementedAssert(m_type->category() != Type::Category::Function, "");
|
|
return m_context.utils().readFromStorage(*m_type, m_offset, false) + "(" + m_slot + ")";
|
|
}
|
|
|
|
void IRStorageItem::storeValue(string const& _value, Type const& _sourceType) const
|
|
{
|
|
if (m_type->isValueType())
|
|
{
|
|
solAssert(m_type->storageBytes() <= 32, "Invalid storage bytes size.");
|
|
solAssert(m_type->storageBytes() > 0, "Invalid storage bytes size.");
|
|
solAssert(m_type->storageBytes() + m_offset <= 32, "");
|
|
|
|
solAssert(_sourceType == *m_type, "Different type, but might not be an error.");
|
|
|
|
m_code <<
|
|
Whiskers("sstore(<slot>, <update>(sload(<slot>), <prepare>(<value>)))\n")
|
|
("slot", m_slot)
|
|
("update", m_context.utils().updateByteSliceFunction(m_type->storageBytes(), m_offset))
|
|
("prepare", m_context.utils().prepareStoreFunction(*m_type))
|
|
("value", _value)
|
|
.render();
|
|
}
|
|
else
|
|
{
|
|
solAssert(
|
|
_sourceType.category() == m_type->category(),
|
|
"Wrong type conversation for assignment."
|
|
);
|
|
if (m_type->category() == Type::Category::Array)
|
|
solUnimplementedAssert(false, "");
|
|
else if (m_type->category() == Type::Category::Struct)
|
|
solUnimplementedAssert(false, "");
|
|
else
|
|
solAssert(false, "Invalid non-value type for assignment.");
|
|
}
|
|
}
|
|
|