mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
9a075458ad
notation Rational implemented...trying to figure out exponential fix for token bug, also quick fix for the wei and seconds fixed problem with var...probably a conversion problem for fixed in size capabilities adding fixed type tests Removing bitshift and regrouping fixed type tests together size capabilities functioning properly for fixed types got exponents up and working with their inverse, changed a few of the tests....something is working that likely shouldn't be slight changes to how to flip the rational negative around...still trying to figure it out tests added updated tests odd differences in trying soltest from solc binary, let me know if you can replicate test not working for odd reason fixed test problem with fixed literals...still need a way to log this error broken up the tests, added some, changed some things in types and began compiler work moar tests and prepping for rebuilding much of the types.cpp file further fixing initial work for fixed types...potentially needing a constant literal type for this
561 lines
19 KiB
C++
561 lines
19 KiB
C++
/*
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This file is part of cpp-ethereum.
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cpp-ethereum 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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cpp-ethereum 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 cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @author Christian <c@ethdev.com>
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* @date 2015
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* LValues for use in the expresison compiler.
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*/
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#include <libsolidity/codegen/LValue.h>
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#include <libevmasm/Instruction.h>
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#include <libsolidity/ast/Types.h>
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#include <libsolidity/ast/AST.h>
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#include <libsolidity/codegen/CompilerUtils.h>
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using namespace std;
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using namespace dev;
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using namespace solidity;
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StackVariable::StackVariable(CompilerContext& _compilerContext, VariableDeclaration const& _declaration):
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LValue(_compilerContext, _declaration.annotation().type.get()),
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m_baseStackOffset(m_context.baseStackOffsetOfVariable(_declaration)),
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m_size(m_dataType->sizeOnStack())
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{
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}
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void StackVariable::retrieveValue(SourceLocation const& _location, bool) const
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{
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unsigned stackPos = m_context.baseToCurrentStackOffset(m_baseStackOffset);
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if (stackPos + 1 > 16) //@todo correct this by fetching earlier or moving to memory
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BOOST_THROW_EXCEPTION(
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CompilerError() <<
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errinfo_sourceLocation(_location) <<
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errinfo_comment("Stack too deep, try removing local variables.")
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);
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solAssert(stackPos + 1 >= m_size, "Size and stack pos mismatch.");
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for (unsigned i = 0; i < m_size; ++i)
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m_context << dupInstruction(stackPos + 1);
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}
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void StackVariable::storeValue(Type const&, SourceLocation const& _location, bool _move) const
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{
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unsigned stackDiff = m_context.baseToCurrentStackOffset(m_baseStackOffset) - m_size + 1;
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if (stackDiff > 16)
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BOOST_THROW_EXCEPTION(
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CompilerError() <<
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errinfo_sourceLocation(_location) <<
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errinfo_comment("Stack too deep, try removing local variables.")
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);
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else if (stackDiff > 0)
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for (unsigned i = 0; i < m_size; ++i)
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m_context << swapInstruction(stackDiff) << Instruction::POP;
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if (!_move)
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retrieveValue(_location);
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}
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void StackVariable::setToZero(SourceLocation const& _location, bool) const
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{
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CompilerUtils(m_context).pushZeroValue(*m_dataType);
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storeValue(*m_dataType, _location, true);
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}
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MemoryItem::MemoryItem(CompilerContext& _compilerContext, Type const& _type, bool _padded):
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LValue(_compilerContext, &_type),
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m_padded(_padded)
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{
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}
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void MemoryItem::retrieveValue(SourceLocation const&, bool _remove) const
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{
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if (m_dataType->isValueType())
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{
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if (!_remove)
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m_context << Instruction::DUP1;
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CompilerUtils(m_context).loadFromMemoryDynamic(*m_dataType, false, m_padded, false);
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}
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else
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m_context << Instruction::MLOAD;
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}
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void MemoryItem::storeValue(Type const& _sourceType, SourceLocation const&, bool _move) const
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{
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CompilerUtils utils(m_context);
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if (m_dataType->isValueType())
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{
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solAssert(_sourceType.isValueType(), "");
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utils.moveIntoStack(_sourceType.sizeOnStack());
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utils.convertType(_sourceType, *m_dataType, true);
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if (!_move)
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{
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utils.moveToStackTop(m_dataType->sizeOnStack());
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utils.copyToStackTop(1 + m_dataType->sizeOnStack(), m_dataType->sizeOnStack());
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}
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if (!m_padded)
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{
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solAssert(m_dataType->calldataEncodedSize(false) == 1, "Invalid non-padded type.");
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if (m_dataType->category() == Type::Category::FixedBytes)
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m_context << u256(0) << Instruction::BYTE;
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m_context << Instruction::SWAP1 << Instruction::MSTORE8;
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}
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else
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{
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utils.storeInMemoryDynamic(*m_dataType, m_padded);
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m_context << Instruction::POP;
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}
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}
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else
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{
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solAssert(_sourceType == *m_dataType, "Conversion not implemented for assignment to memory.");
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solAssert(m_dataType->sizeOnStack() == 1, "");
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if (!_move)
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m_context << Instruction::DUP2 << Instruction::SWAP1;
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// stack: [value] value lvalue
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// only store the reference
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m_context << Instruction::MSTORE;
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}
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}
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void MemoryItem::setToZero(SourceLocation const&, bool _removeReference) const
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{
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CompilerUtils utils(m_context);
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if (!_removeReference)
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m_context << Instruction::DUP1;
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utils.pushZeroValue(*m_dataType);
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utils.storeInMemoryDynamic(*m_dataType, m_padded);
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m_context << Instruction::POP;
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}
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StorageItem::StorageItem(CompilerContext& _compilerContext, VariableDeclaration const& _declaration):
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StorageItem(_compilerContext, *_declaration.annotation().type)
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{
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auto const& location = m_context.storageLocationOfVariable(_declaration);
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m_context << location.first << u256(location.second);
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}
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StorageItem::StorageItem(CompilerContext& _compilerContext, Type const& _type):
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LValue(_compilerContext, &_type)
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{
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if (m_dataType->isValueType())
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{
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solAssert(m_dataType->storageSize() == m_dataType->sizeOnStack(), "");
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solAssert(m_dataType->storageSize() == 1, "Invalid storage size.");
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}
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}
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void StorageItem::retrieveValue(SourceLocation const&, bool _remove) const
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{
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// stack: storage_key storage_offset
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if (!m_dataType->isValueType())
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{
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solAssert(m_dataType->sizeOnStack() == 1, "Invalid storage ref size.");
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if (_remove)
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m_context << Instruction::POP; // remove byte offset
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else
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m_context << Instruction::DUP2;
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return;
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}
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if (!_remove)
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CompilerUtils(m_context).copyToStackTop(sizeOnStack(), sizeOnStack());
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if (m_dataType->storageBytes() == 32)
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m_context << Instruction::POP << Instruction::SLOAD;
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else
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{
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m_context
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<< Instruction::SWAP1 << Instruction::SLOAD << Instruction::SWAP1
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<< u256(0x100) << Instruction::EXP << Instruction::SWAP1 << Instruction::DIV;
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if (m_dataType->category() == Type::Category::FixedBytes)
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m_context << (u256(0x1) << (256 - 8 * m_dataType->storageBytes())) << Instruction::MUL;
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else if (
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m_dataType->category() == Type::Category::Integer &&
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dynamic_cast<IntegerType const&>(*m_dataType).isSigned()
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)
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m_context << u256(m_dataType->storageBytes() - 1) << Instruction::SIGNEXTEND;
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//need something here for Fixed...guidance would be nice
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else
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m_context << ((u256(0x1) << (8 * m_dataType->storageBytes())) - 1) << Instruction::AND;
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}
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}
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void StorageItem::storeValue(Type const& _sourceType, SourceLocation const& _location, bool _move) const
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{
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CompilerUtils utils(m_context);
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// stack: value storage_key storage_offset
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if (m_dataType->isValueType())
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{
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solAssert(m_dataType->storageBytes() <= 32, "Invalid storage bytes size.");
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solAssert(m_dataType->storageBytes() > 0, "Invalid storage bytes size.");
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if (m_dataType->storageBytes() == 32)
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{
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// offset should be zero
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m_context << Instruction::POP;
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if (!_move)
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m_context << Instruction::DUP2 << Instruction::SWAP1;
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m_context << Instruction::SSTORE;
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}
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else
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{
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// OR the value into the other values in the storage slot
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m_context << u256(0x100) << Instruction::EXP;
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// stack: value storage_ref multiplier
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// fetch old value
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m_context << Instruction::DUP2 << Instruction::SLOAD;
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// stack: value storege_ref multiplier old_full_value
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// clear bytes in old value
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m_context
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<< Instruction::DUP2 << ((u256(1) << (8 * m_dataType->storageBytes())) - 1)
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<< Instruction::MUL;
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m_context << Instruction::NOT << Instruction::AND;
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// stack: value storage_ref multiplier cleared_value
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m_context
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<< Instruction::SWAP1 << Instruction::DUP4;
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// stack: value storage_ref cleared_value multiplier value
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if (m_dataType->category() == Type::Category::FixedBytes)
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m_context
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<< (u256(0x1) << (256 - 8 * dynamic_cast<FixedBytesType const&>(*m_dataType).numBytes()))
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<< Instruction::SWAP1 << Instruction::DIV;
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else if (
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m_dataType->category() == Type::Category::Integer &&
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dynamic_cast<IntegerType const&>(*m_dataType).isSigned()
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)
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// remove the higher order bits
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m_context
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<< (u256(1) << (8 * (32 - m_dataType->storageBytes())))
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<< Instruction::SWAP1
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<< Instruction::DUP2
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<< Instruction::MUL
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<< Instruction::DIV;
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m_context << Instruction::MUL << Instruction::OR;
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//else if (m_dataType->category() == Type::Category::Fixed)
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//trying to figure out what this does...going to require some more assistance
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m_context << Instruction::MUL << eth::Instruction::OR;
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// stack: value storage_ref updated_value
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m_context << Instruction::SWAP1 << Instruction::SSTORE;
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if (_move)
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m_context << Instruction::POP;
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}
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}
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else
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{
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solAssert(
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_sourceType.category() == m_dataType->category(),
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"Wrong type conversation for assignment.");
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if (m_dataType->category() == Type::Category::Array)
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{
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m_context << Instruction::POP; // remove byte offset
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ArrayUtils(m_context).copyArrayToStorage(
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dynamic_cast<ArrayType const&>(*m_dataType),
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dynamic_cast<ArrayType const&>(_sourceType)
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);
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if (_move)
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m_context << Instruction::POP;
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}
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else if (m_dataType->category() == Type::Category::Struct)
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{
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// stack layout: source_ref target_ref target_offset
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// note that we have structs, so offset should be zero and are ignored
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m_context << Instruction::POP;
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auto const& structType = dynamic_cast<StructType const&>(*m_dataType);
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auto const& sourceType = dynamic_cast<StructType const&>(_sourceType);
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solAssert(
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structType.structDefinition() == sourceType.structDefinition(),
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"Struct assignment with conversion."
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);
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solAssert(sourceType.location() != DataLocation::CallData, "Structs in calldata not supported.");
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for (auto const& member: structType.members(nullptr))
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{
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// assign each member that is not a mapping
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TypePointer const& memberType = member.type;
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if (memberType->category() == Type::Category::Mapping)
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continue;
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TypePointer sourceMemberType = sourceType.memberType(member.name);
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if (sourceType.location() == DataLocation::Storage)
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{
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// stack layout: source_ref target_ref
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pair<u256, unsigned> const& offsets = sourceType.storageOffsetsOfMember(member.name);
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m_context << offsets.first << Instruction::DUP3 << Instruction::ADD;
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m_context << u256(offsets.second);
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// stack: source_ref target_ref source_member_ref source_member_off
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StorageItem(m_context, *sourceMemberType).retrieveValue(_location, true);
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// stack: source_ref target_ref source_value...
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}
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else
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{
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solAssert(sourceType.location() == DataLocation::Memory, "");
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// stack layout: source_ref target_ref
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TypePointer sourceMemberType = sourceType.memberType(member.name);
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m_context << sourceType.memoryOffsetOfMember(member.name);
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m_context << Instruction::DUP3 << Instruction::ADD;
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MemoryItem(m_context, *sourceMemberType).retrieveValue(_location, true);
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// stack layout: source_ref target_ref source_value...
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}
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unsigned stackSize = sourceMemberType->sizeOnStack();
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pair<u256, unsigned> const& offsets = structType.storageOffsetsOfMember(member.name);
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m_context << dupInstruction(1 + stackSize) << offsets.first << Instruction::ADD;
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m_context << u256(offsets.second);
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// stack: source_ref target_ref target_off source_value... target_member_ref target_member_byte_off
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StorageItem(m_context, *memberType).storeValue(*sourceMemberType, _location, true);
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}
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// stack layout: source_ref target_ref
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solAssert(sourceType.sizeOnStack() == 1, "Unexpected source size.");
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if (_move)
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utils.popStackSlots(2);
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else
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m_context << Instruction::SWAP1 << Instruction::POP;
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}
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else
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BOOST_THROW_EXCEPTION(
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InternalCompilerError()
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<< errinfo_sourceLocation(_location)
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<< errinfo_comment("Invalid non-value type for assignment."));
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}
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}
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void StorageItem::setToZero(SourceLocation const&, bool _removeReference) const
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{
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if (m_dataType->category() == Type::Category::Array)
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{
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if (!_removeReference)
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CompilerUtils(m_context).copyToStackTop(sizeOnStack(), sizeOnStack());
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ArrayUtils(m_context).clearArray(dynamic_cast<ArrayType const&>(*m_dataType));
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}
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else if (m_dataType->category() == Type::Category::Struct)
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{
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// stack layout: storage_key storage_offset
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// @todo this can be improved: use StorageItem for non-value types, and just store 0 in
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// all slots that contain value types later.
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auto const& structType = dynamic_cast<StructType const&>(*m_dataType);
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for (auto const& member: structType.members(nullptr))
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{
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// zero each member that is not a mapping
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TypePointer const& memberType = member.type;
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if (memberType->category() == Type::Category::Mapping)
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continue;
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pair<u256, unsigned> const& offsets = structType.storageOffsetsOfMember(member.name);
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m_context
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<< offsets.first << Instruction::DUP3 << Instruction::ADD
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<< u256(offsets.second);
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StorageItem(m_context, *memberType).setToZero();
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}
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if (_removeReference)
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m_context << Instruction::POP << Instruction::POP;
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}
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else
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{
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solAssert(m_dataType->isValueType(), "Clearing of unsupported type requested: " + m_dataType->toString());
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if (!_removeReference)
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CompilerUtils(m_context).copyToStackTop(sizeOnStack(), sizeOnStack());
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if (m_dataType->storageBytes() == 32)
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{
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// offset should be zero
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m_context
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<< Instruction::POP << u256(0)
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<< Instruction::SWAP1 << Instruction::SSTORE;
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}
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else
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{
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m_context << u256(0x100) << Instruction::EXP;
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// stack: storage_ref multiplier
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// fetch old value
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m_context << Instruction::DUP2 << Instruction::SLOAD;
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// stack: storege_ref multiplier old_full_value
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// clear bytes in old value
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m_context
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<< Instruction::SWAP1 << ((u256(1) << (8 * m_dataType->storageBytes())) - 1)
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<< Instruction::MUL;
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m_context << Instruction::NOT << Instruction::AND;
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// stack: storage_ref cleared_value
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m_context << Instruction::SWAP1 << Instruction::SSTORE;
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}
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}
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}
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/// Used in StorageByteArrayElement
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static FixedBytesType byteType(1);
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StorageByteArrayElement::StorageByteArrayElement(CompilerContext& _compilerContext):
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LValue(_compilerContext, &byteType)
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{
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}
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void StorageByteArrayElement::retrieveValue(SourceLocation const&, bool _remove) const
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{
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// stack: ref byte_number
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if (_remove)
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m_context << Instruction::SWAP1 << Instruction::SLOAD
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<< Instruction::SWAP1 << Instruction::BYTE;
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else
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m_context << Instruction::DUP2 << Instruction::SLOAD
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<< Instruction::DUP2 << Instruction::BYTE;
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m_context << (u256(1) << (256 - 8)) << Instruction::MUL;
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}
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void StorageByteArrayElement::storeValue(Type const&, SourceLocation const&, bool _move) const
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{
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// stack: value ref byte_number
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m_context << u256(31) << Instruction::SUB << u256(0x100) << Instruction::EXP;
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// stack: value ref (1<<(8*(31-byte_number)))
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m_context << Instruction::DUP2 << Instruction::SLOAD;
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// stack: value ref (1<<(8*(31-byte_number))) old_full_value
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// clear byte in old value
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m_context << Instruction::DUP2 << u256(0xff) << Instruction::MUL
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<< Instruction::NOT << Instruction::AND;
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// stack: value ref (1<<(32-byte_number)) old_full_value_with_cleared_byte
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m_context << Instruction::SWAP1;
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m_context << (u256(1) << (256 - 8)) << Instruction::DUP5 << Instruction::DIV
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<< Instruction::MUL << Instruction::OR;
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// stack: value ref new_full_value
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m_context << Instruction::SWAP1 << Instruction::SSTORE;
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if (_move)
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m_context << Instruction::POP;
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}
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void StorageByteArrayElement::setToZero(SourceLocation const&, bool _removeReference) const
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{
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// stack: ref byte_number
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if (!_removeReference)
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m_context << Instruction::DUP2 << Instruction::DUP2;
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m_context << u256(31) << Instruction::SUB << u256(0x100) << Instruction::EXP;
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// stack: ref (1<<(8*(31-byte_number)))
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m_context << Instruction::DUP2 << Instruction::SLOAD;
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// stack: ref (1<<(8*(31-byte_number))) old_full_value
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// clear byte in old value
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m_context << Instruction::SWAP1 << u256(0xff) << Instruction::MUL;
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m_context << Instruction::NOT << Instruction::AND;
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// stack: ref old_full_value_with_cleared_byte
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m_context << Instruction::SWAP1 << Instruction::SSTORE;
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}
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StorageArrayLength::StorageArrayLength(CompilerContext& _compilerContext, const ArrayType& _arrayType):
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LValue(_compilerContext, _arrayType.memberType("length").get()),
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m_arrayType(_arrayType)
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{
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solAssert(m_arrayType.isDynamicallySized(), "");
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}
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void StorageArrayLength::retrieveValue(SourceLocation const&, bool _remove) const
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{
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ArrayUtils(m_context).retrieveLength(m_arrayType);
|
|
if (_remove)
|
|
m_context << Instruction::SWAP1 << Instruction::POP;
|
|
}
|
|
|
|
void StorageArrayLength::storeValue(Type const&, SourceLocation const&, bool _move) const
|
|
{
|
|
if (_move)
|
|
m_context << Instruction::SWAP1;
|
|
else
|
|
m_context << Instruction::DUP2;
|
|
ArrayUtils(m_context).resizeDynamicArray(m_arrayType);
|
|
}
|
|
|
|
void StorageArrayLength::setToZero(SourceLocation const&, bool _removeReference) const
|
|
{
|
|
if (!_removeReference)
|
|
m_context << Instruction::DUP1;
|
|
ArrayUtils(m_context).clearDynamicArray(m_arrayType);
|
|
}
|
|
|
|
|
|
TupleObject::TupleObject(
|
|
CompilerContext& _compilerContext,
|
|
std::vector<std::unique_ptr<LValue>>&& _lvalues
|
|
):
|
|
LValue(_compilerContext), m_lvalues(move(_lvalues))
|
|
{
|
|
}
|
|
|
|
unsigned TupleObject::sizeOnStack() const
|
|
{
|
|
unsigned size = 0;
|
|
for (auto const& lv: m_lvalues)
|
|
if (lv)
|
|
size += lv->sizeOnStack();
|
|
return size;
|
|
}
|
|
|
|
void TupleObject::retrieveValue(SourceLocation const& _location, bool _remove) const
|
|
{
|
|
unsigned initialDepth = sizeOnStack();
|
|
unsigned initialStack = m_context.stackHeight();
|
|
for (auto const& lv: m_lvalues)
|
|
if (lv)
|
|
{
|
|
solAssert(initialDepth + m_context.stackHeight() >= initialStack, "");
|
|
unsigned depth = initialDepth + m_context.stackHeight() - initialStack;
|
|
if (lv->sizeOnStack() > 0)
|
|
{
|
|
if (_remove && depth > lv->sizeOnStack())
|
|
CompilerUtils(m_context).moveToStackTop(depth, depth - lv->sizeOnStack());
|
|
else if (!_remove && depth > 0)
|
|
CompilerUtils(m_context).copyToStackTop(depth, lv->sizeOnStack());
|
|
}
|
|
lv->retrieveValue(_location, true);
|
|
}
|
|
}
|
|
|
|
void TupleObject::storeValue(Type const& _sourceType, SourceLocation const& _location, bool) const
|
|
{
|
|
// values are below the lvalue references
|
|
unsigned valuePos = sizeOnStack();
|
|
TypePointers const& valueTypes = dynamic_cast<TupleType const&>(_sourceType).components();
|
|
solAssert(valueTypes.size() == m_lvalues.size(), "");
|
|
// valuePos .... refPos ...
|
|
// We will assign from right to left to optimize stack layout.
|
|
for (size_t i = 0; i < m_lvalues.size(); ++i)
|
|
{
|
|
unique_ptr<LValue> const& lvalue = m_lvalues[m_lvalues.size() - i - 1];
|
|
TypePointer const& valType = valueTypes[valueTypes.size() - i - 1];
|
|
unsigned stackHeight = m_context.stackHeight();
|
|
solAssert(!valType == !lvalue, "");
|
|
if (!lvalue)
|
|
continue;
|
|
valuePos += valType->sizeOnStack();
|
|
// copy value to top
|
|
CompilerUtils(m_context).copyToStackTop(valuePos, valType->sizeOnStack());
|
|
// move lvalue ref above value
|
|
CompilerUtils(m_context).moveToStackTop(valType->sizeOnStack(), lvalue->sizeOnStack());
|
|
lvalue->storeValue(*valType, _location, true);
|
|
valuePos += m_context.stackHeight() - stackHeight;
|
|
}
|
|
// As the type of an assignment to a tuple type is the empty tuple, we always move.
|
|
CompilerUtils(m_context).popStackElement(_sourceType);
|
|
}
|
|
|
|
void TupleObject::setToZero(SourceLocation const& _location, bool _removeReference) const
|
|
{
|
|
if (_removeReference)
|
|
{
|
|
for (size_t i = 0; i < m_lvalues.size(); ++i)
|
|
if (m_lvalues[m_lvalues.size() - i])
|
|
m_lvalues[m_lvalues.size() - i]->setToZero(_location, true);
|
|
}
|
|
else
|
|
{
|
|
unsigned depth = sizeOnStack();
|
|
for (auto const& val: m_lvalues)
|
|
if (val)
|
|
{
|
|
if (val->sizeOnStack() > 0)
|
|
CompilerUtils(m_context).copyToStackTop(depth, val->sizeOnStack());
|
|
val->setToZero(_location, false);
|
|
depth -= val->sizeOnStack();
|
|
}
|
|
}
|
|
}
|