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Fixes for assigning and deleting structs containing byte arrays.

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This commit is contained in:
Christian 2015-02-18 00:15:08 +01:00
parent 294648b534
commit 197b184d25
3 changed files with 26 additions and 2 deletions
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1
CompilerContext.h
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@ -48,6 +48,7 @@ public:
bytes const& getCompiledContract(ContractDefinition const& _contract) const;
void adjustStackOffset(int _adjustment) { m_asm.adjustDeposit(_adjustment); }
unsigned getStackHeight() { solAssert(m_asm.deposit() >= 0, ""); return unsigned(m_asm.deposit()); }
bool isMagicGlobal(Declaration const* _declaration) const { return m_magicGlobals.count(_declaration) != 0; }
bool isLocalVariable(Declaration const* _declaration) const;

25
ExpressionCompiler.cpp
View File

@ -1119,9 +1119,13 @@ void ExpressionCompiler::LValue::storeValue(Type const& _sourceType, Location co
{
solAssert(_sourceType.getCategory() == m_dataType->getCategory(), "");
if (m_dataType->getCategory() == Type::Category::ByteArray)
{
CompilerUtils(*m_context).copyByteArrayToStorage(
dynamic_cast<ByteArrayType const&>(*m_dataType),
dynamic_cast<ByteArrayType const&>(_sourceType));
if (_move)
*m_context << eth::Instruction::POP;
}
else if (m_dataType->getCategory() == Type::Category::Struct)
{
// stack layout: source_ref target_ref
@ -1136,12 +1140,14 @@ void ExpressionCompiler::LValue::storeValue(Type const& _sourceType, Location co
*m_context << structType.getStorageOffsetOfMember(member.first)
<< eth::Instruction::DUP3 << eth::Instruction::DUP2
<< eth::Instruction::ADD;
// stack: source_ref target_ref member_offset source_member_ref
LValue rightHandSide(*m_context, LValueType::Storage, memberType);
rightHandSide.retrieveValue(_location, true);
// stack: source_ref target_ref offset source_value...
// stack: source_ref target_ref member_offset source_value...
*m_context << eth::dupInstruction(2 + memberType->getSizeOnStack())
<< eth::dupInstruction(2 + memberType->getSizeOnStack())
<< eth::Instruction::ADD;
// stack: source_ref target_ref member_offset source_value... target_member_ref
LValue memberLValue(*m_context, LValueType::Storage, memberType);
memberLValue.storeValue(*memberType, _location, true);
*m_context << eth::Instruction::POP;
@ -1189,6 +1195,23 @@ void ExpressionCompiler::LValue::setToZero(Location const& _location) const
case LValueType::Storage:
if (m_dataType->getCategory() == Type::Category::ByteArray)
CompilerUtils(*m_context).clearByteArray(dynamic_cast<ByteArrayType const&>(*m_dataType));
else if (m_dataType->getCategory() == Type::Category::Struct)
{
// stack layout: ref
auto const& structType = dynamic_cast<StructType const&>(*m_dataType);
for (auto const& member: structType.getMembers())
{
// zero each member that is not a mapping
TypePointer const& memberType = member.second;
if (memberType->getCategory() == Type::Category::Mapping)
continue;
*m_context << structType.getStorageOffsetOfMember(member.first)
<< eth::Instruction::DUP2 << eth::Instruction::ADD;
LValue memberValue(*m_context, LValueType::Storage, memberType);
memberValue.setToZero();
}
*m_context << eth::Instruction::POP;
}
else
{
if (m_size == 0)

2
ExpressionCompiler.h
View File

@ -144,7 +144,7 @@ private:
void retrieveValue(Location const& _location, bool _remove = false) const;
/// Moves a value from the stack to the lvalue. Removes the value if @a _move is true.
/// @a _location is the source location of the expression that caused this operation.
/// Stack pre: [lvalue_ref] value
/// Stack pre: value [lvalue_ref]
/// Stack post if !_move: value_of(lvalue_ref)
void storeValue(Type const& _sourceType, Location const& _location = Location(), bool _move = false) const;
/// Stores zero in the lvalue.