cerc-io/solidity
16
0
Fork 0
mirror of https://github.com/ethereum/solidity synced 2023-10-03 13:03:40 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Index and length access for dynamic arrays.

Browse Source
This commit is contained in:
Christian 2015-02-23 01:31:05 +01:00
parent 754c804d19
commit 5d2323c914
2 changed files with 19 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
AST.cpp
View File

@ -603,7 +603,17 @@ void MemberAccess::checkTypeRequirements()
if (!m_type)
BOOST_THROW_EXCEPTION(createTypeError("Member \"" + *m_memberName + "\" not found or not "
"visible in " + type.toString()));
m_isLValue = (type.getCategory() == Type::Category::Struct);
// This should probably move somewhere else.
if (type.getCategory() == Type::Category::Struct)
m_isLValue = true;
else if (type.getCategory() == Type::Category::Array)
{
auto const& arrayType(dynamic_cast<ArrayType const&>(type));
m_isLValue = (*m_memberName == "length" &&
arrayType.getLocation() != ArrayType::Location::CallData && arrayType.isDynamicallySized());
}
else
m_isLValue = false;
}
void IndexAccess::checkTypeRequirements()

18
ExpressionCompiler.cpp
View File

@ -546,7 +546,8 @@ void ExpressionCompiler::endVisit(MemberAccess const& _memberAccess)
m_context << eth::Instruction::SWAP1 << eth::Instruction::POP;
break;
case ArrayType::Location::Storage:
m_context << eth::Instruction::SLOAD;
m_currentLValue = LValue(m_context, LValue::LValueType::Storage, _memberAccess.getType());
m_currentLValue.retrieveValueIfLValueNotRequested(_memberAccess);
break;
default:
solAssert(false, "Unsupported array location.");
@ -583,13 +584,10 @@ bool ExpressionCompiler::visit(IndexAccess const& _indexAccess)
ArrayType const& arrayType = dynamic_cast<ArrayType const&>(baseType);
solAssert(arrayType.getLocation() == ArrayType::Location::Storage,
"TODO: Index acces only implemented for storage arrays.");
solAssert(!arrayType.isDynamicallySized(),
"TODO: Index acces only implemented for fixed-size arrays.");
solAssert(!arrayType.isByteArray(),
"TODO: Index acces not implemented for byte arrays.");
solAssert(!arrayType.isByteArray(), "TODO: Index acces not implemented for byte arrays.");
solAssert(_indexAccess.getIndexExpression(), "Index expression expected.");
// TODO: for dynamically-sized arrays, update the length for each write
// TODO: do we want to check the index?
if (arrayType.isDynamicallySized())
CompilerUtils(m_context).computeHashStatic();
_indexAccess.getIndexExpression()->accept(*this);
m_context << arrayType.getBaseType()->getStorageSize() << eth::Instruction::MUL
<< eth::Instruction::ADD;
@ -1075,7 +1073,7 @@ void ExpressionCompiler::LValue::retrieveValue(Location const& _location, bool _
{
case LValueType::Stack:
{
unsigned stackPos = m_context->baseToCurrentStackOffset(unsigned(m_baseStackOffset));
unsigned stackPos = m_context->baseToCurrentStackOffset(m_baseStackOffset);
if (stackPos >= 15) //@todo correct this by fetching earlier or moving to memory
BOOST_THROW_EXCEPTION(CompilerError() << errinfo_sourceLocation(_location)
<< errinfo_comment("Stack too deep."));
@ -1124,7 +1122,7 @@ void ExpressionCompiler::LValue::storeValue(Type const& _sourceType, Location co
{
case LValueType::Stack:
{
unsigned stackDiff = m_context->baseToCurrentStackOffset(unsigned(m_baseStackOffset)) - m_size + 1;
unsigned stackDiff = m_context->baseToCurrentStackOffset(m_baseStackOffset) - m_size + 1;
if (stackDiff > 16)
BOOST_THROW_EXCEPTION(CompilerError() << errinfo_sourceLocation(_location)
<< errinfo_comment("Stack too deep."));
@ -1227,7 +1225,7 @@ void ExpressionCompiler::LValue::setToZero(Location const& _location) const
{
case LValueType::Stack:
{
unsigned stackDiff = m_context->baseToCurrentStackOffset(unsigned(m_baseStackOffset));
unsigned stackDiff = m_context->baseToCurrentStackOffset(m_baseStackOffset);
if (stackDiff > 16)
BOOST_THROW_EXCEPTION(CompilerError() << errinfo_sourceLocation(_location)
<< errinfo_comment("Stack too deep."));