vector<ContractDefinition const*>::const_iterator CompilerContext::superContract(ContractDefinition const& _contract) const
{
solAssert(!m_inheritanceHierarchy.empty(), "No inheritance hierarchy set.");
auto it = find(m_inheritanceHierarchy.begin(), m_inheritanceHierarchy.end(), &_contract);
solAssert(it != m_inheritanceHierarchy.end(), "Base not found in inheritance hierarchy.");
return ++it;
}
ModifierDefinition const& CompilerContext::functionModifier(string const& _name) const
{
solAssert(!m_inheritanceHierarchy.empty(), "No inheritance hierarchy set.");
for (ContractDefinition const* contract: m_inheritanceHierarchy)
for (ModifierDefinition const* modifier: contract->functionModifiers())
if (modifier->name() == _name)
return *modifier;
BOOST_THROW_EXCEPTION(InternalCompilerError()
<< errinfo_comment("Function modifier " + _name + " not found."));
}
eth::AssemblyItem CompilerContext::virtualFunctionEntryLabel(FunctionDefinition const& _function)
{
// Libraries do not allow inheritance and their functions can be inlined, so we should not
// search the inheritance hierarchy (which will be the wrong one in case the function
// is inlined).
if (auto scope = dynamic_cast<ContractDefinition const*>(_function.scope()))
if (scope->isLibrary())
return functionEntryLabel(_function);
solAssert(!m_inheritanceHierarchy.empty(), "No inheritance hierarchy set.");
return virtualFunctionEntryLabel(_function, m_inheritanceHierarchy.begin());
}
void ElementaryTypeNameToken::assertDetails(Token::Value _baseType, unsigned const& _first, unsigned const& _second)
{
solAssert(Token::isElementaryTypeName(_baseType), "");
if (_baseType == Token::BytesM)
{
solAssert(_second == 0, "There should not be a second size argument to type bytesM.");
solAssert(_first <= 32, "No elementary type bytes" + to_string(_first) + ".");
}
else if (_baseType == Token::UIntM || _baseType == Token::IntM)
{
solAssert(_second == 0, "There should not be a second size argument to type " + string(Token::toString(_baseType)) + ".");
solAssert(
_first <= 256 && _first % 8 == 0,
"No elementary type " + string(Token::toString(_baseType)) + to_string(_first) + "."
);
}
else if (_baseType == Token::UFixedMxN || _baseType == Token::FixedMxN)
{
solAssert(
_first + _second <= 256 && _first % 8 == 0 && _second % 8 == 0,
"No elementary type " + string(Token::toString(_baseType)) + to_string(_first) + "x" + to_string(_second) + "."
);
}
m_token = _baseType;
m_firstNumber = _first;
m_secondNumber = _second;
}
void CompilerContext::appendInlineAssembly(
string const& _assembly,
vector<string> const& _localVariables,
map<string, string> const& _replacements
)
{
string replacedAssembly;
string const* assembly = &_assembly;
if (!_replacements.empty())
{
replacedAssembly = _assembly;
for (auto const& replacement: _replacements)
replacedAssembly = boost::algorithm::replace_all_copy(replacedAssembly, replacement.first, replacement.second);
assembly = &replacedAssembly;
}
unsigned startStackHeight = stackHeight();
auto identifierAccess = [&](
assembly::Identifier const& _identifier,
eth::Assembly& _assembly,
assembly::CodeGenerator::IdentifierContext _context
) {
auto it = std::find(_localVariables.begin(), _localVariables.end(), _identifier.name);
if (it == _localVariables.end())
return false;
unsigned stackDepth = _localVariables.end() - it;
int stackDiff = _assembly.deposit() - startStackHeight + stackDepth;
if (stackDiff < 1 || stackDiff > 16)
BOOST_THROW_EXCEPTION(
CompilerError() <<
errinfo_comment("Stack too deep, try removing local variables.")
);
if (_context == assembly::CodeGenerator::IdentifierContext::RValue)
_assembly.append(dupInstruction(stackDiff));
else
{
_assembly.append(swapInstruction(stackDiff));
_assembly.append(Instruction::POP);
}
return true;
};
solAssert(assembly::InlineAssemblyStack().parseAndAssemble(*assembly, m_asm, identifierAccess), "");
}
eth::AssemblyItem CompilerContext::virtualFunctionEntryLabel(
FunctionDefinition const& _function,
vector<ContractDefinition const*>::const_iterator _searchStart
)
{
string name = _function.name();
FunctionType functionType(_function);
auto it = _searchStart;
for (; it != m_inheritanceHierarchy.end(); ++it)
for (FunctionDefinition const* function: (*it)->definedFunctions())
if (
function->name() == name &&
!function->isConstructor() &&
FunctionType(*function).hasEqualArgumentTypes(functionType)
)
return functionEntryLabel(*function);
solAssert(false, "Super function " + name + " not found.");
return m_asm.newTag(); // not reached
}
eth::Assembly const& CompilerContext::compiledContract(const ContractDefinition& _contract) const
{
auto ret = m_compiledContracts.find(&_contract);
solAssert(ret != m_compiledContracts.end(), "Compiled contract not found.");
return *ret->second;
}
void CompilerContext::removeVariable(VariableDeclaration const& _declaration)
{
solAssert(!!m_localVariables.count(&_declaration), "");
m_localVariables.erase(&_declaration);
}
void CompilerContext::addVariable(VariableDeclaration const& _declaration,
unsigned _offsetToCurrent)
{
solAssert(m_asm.deposit() >= 0 && unsigned(m_asm.deposit()) >= _offsetToCurrent, "");
m_localVariables[&_declaration] = unsigned(m_asm.deposit()) - _offsetToCurrent;
}
pair<u256, unsigned> CompilerContext::storageLocationOfVariable(const Declaration& _declaration) const
{
auto it = m_stateVariables.find(&_declaration);
solAssert(it != m_stateVariables.end(), "Variable not found in storage.");
return it->second;
}
unsigned CompilerContext::baseStackOffsetOfVariable(Declaration const& _declaration) const
{
auto res = m_localVariables.find(&_declaration);
solAssert(res != m_localVariables.end(), "Variable not found on stack.");
return res->second;
}
eth::AssemblyItem CompilerContext::superFunctionEntryLabel(FunctionDefinition const& _function, ContractDefinition const& _base)
{
solAssert(!m_inheritanceHierarchy.empty(), "No inheritance hierarchy set.");
return virtualFunctionEntryLabel(_function, superContract(_base));
}
eth::AssemblyItem CompilerContext::getFunctionEntryLabel(FunctionDefinition const& _function) const
{
auto res = m_functionEntryLabels.find(&_function);
solAssert(res != m_functionEntryLabels.end(), "Function entry label not found.");
return res->second.tag();
}
