TypePtr FunctionCall::checkParamsAndReturn(AnalysisResultPtr ar,
TypePtr type, bool coerce,
FunctionScopePtr func) {
ConstructPtr self = shared_from_this();
ar->getDependencyGraph()->add(DependencyGraph::KindOfFunctionCall,
ar->getName(), getText(),
self, func->getFullName(), func->getStmt());
TypePtr frt = func->getReturnType();
if (!frt) {
m_voidReturn = true;
setActualType(TypePtr());
if (!type->is(Type::KindOfAny)) {
if (!m_allowVoidReturn && ar->isSecondPass() && !func->isAbstract()) {
ar->getCodeError()->record(self, CodeError::UseVoidReturn, self);
}
m_voidWrapper = true;
}
} else {
m_voidReturn = false;
m_voidWrapper = false;
type = checkTypesImpl(ar, type, frt, coerce);
}
m_extraArg = func->inferParamTypes(ar, self, m_params, m_valid);
m_variableArgument = func->isVariableArgument();
if (m_valid) {
m_implementedType.reset();
} else {
m_implementedType = Type::Variant;
}
return type;
}
TypePtr ParameterExpression::inferTypes(AnalysisResultPtr ar, TypePtr type,
bool coerce) {
ASSERT(type->is(Type::KindOfSome) || type->is(Type::KindOfAny));
TypePtr ret = getTypeSpec(ar, true);
if (m_defaultValue && !m_ref) {
ret = m_defaultValue->inferAndCheck(ar, ret, false);
}
// parameters are like variables, but we need to remember these are
// parameters so when variable table is generated, they are not generated
// as declared variables.
VariableTablePtr variables = ar->getScope()->getVariables();
if (ar->isFirstPass()) {
ret = variables->addParam(m_name, ret, ar, shared_from_this());
} else {
// Functions that can be called dynamically have to have
// variant parameters, even if they have a type hint
if (ar->getFunctionScope()->isDynamic() ||
ar->getFunctionScope()->isRedeclaring() ||
ar->getFunctionScope()->isVirtual()) {
variables->forceVariant(ar, m_name, VariableTable::AnyVars);
}
int p;
ret = variables->checkVariable(m_name, ret, true, ar, shared_from_this(),
p);
if (ar->isSecondPass() && ret->is(Type::KindOfSome)) {
// This is probably too conservative. The problem is that
// a function never called will have parameter types of Any.
// Functions that it calls won't be able to accept variant unless
// it is forced here.
variables->forceVariant(ar, m_name, VariableTable::AnyVars);
ret = Type::Variant;
} else if (ar->getPhase() == AnalysisResult::LastInference &&
!ret->getName().empty()) {
addUserClass(ar, ret->getName(), true);
}
}
return ret;
}