protected override void VisitReference(ReferenceNode referenceNode)
{
NestableSymbol nestableSymbol = referenceNode.Symbol as NestableSymbol;
switch (nestableSymbol?.Node)
{
case ConstDefinitionNode _:
case ParameterDeclarationNode _:
break;
case VarDeclarationNode _:
if (_currentBlockSymbol == null)
{
throw new Exception();
}
NestableSymbol baseSymbol = referenceNode.BaseSymbol as NestableSymbol;
if (baseSymbol == null)
{
break;
}
ReferenceData referenceData = GetDataFromReferenceNode(referenceNode);
if (referenceData == null)
{
break;
}
if (_currentBlockSymbol is SubclassSymbol currentSubclassSymbol)
{
if (baseSymbol.ParentBlockSymbol == currentSubclassSymbol.BaseClassSymbol)
{
HashSet <string> initializedAttributesPaths = GetInitializedAttributesPaths((SubclassNode)_currentBlockSymbol.Node);
if (!initializedAttributesPaths.Contains(referenceData.PreDotPath))
{
referenceNode.Annotations.Add(new UsageOfNonInitializedVariableWarning(
referenceData.BaseName, referenceData.Index, true));
}
break;
}
}
if (nestableSymbol.ParentBlockSymbol == _currentBlockSymbol)
{
if (!_initializedLocalsPaths.Contains(referenceData.PreDotPath))
{
referenceNode.Annotations.Add(new UsageOfNonInitializedVariableWarning(
referenceData.BaseName, referenceData.Index, false));
}
}
break;
}
base.VisitReference(referenceNode);
}
protected override void VisitAssignment(AssignmentNode node)
{
ReferenceNode referenceNode = node.LeftSideNode;
if (referenceNode.Symbol is InstanceSymbol)
{
// instances as of now aren't of type NestableSymbol, they can appear tough
// however they are always initialized when they are created
return;
}
Visit(node.RightSideNode);
NestableSymbol nestableSymbol = (NestableSymbol)referenceNode.Symbol;
switch (nestableSymbol?.Node)
{
case ConstDefinitionNode _:
case ParameterDeclarationNode _:
break;
case VarDeclarationNode _:
if (_currentBlockSymbol == null)
{
throw new Exception();
}
NestableSymbol baseSymbol = referenceNode.BaseSymbol as NestableSymbol;
if (baseSymbol == null)
{
break;
}
ReferenceData referenceData = GetDataFromReferenceNode(referenceNode);
if (referenceData == null || referenceData.HasDotInPath)
{
break;
}
string relativePath = referenceData.PreDotPath;
if (_currentBlockSymbol is SubclassSymbol currentSubclassSymbol)
{
if (baseSymbol.ParentBlockSymbol == currentSubclassSymbol.BaseClassSymbol)
{
_initializedAttributesPaths.Add(relativePath);
break;
}
}
if (nestableSymbol.ParentBlockSymbol == _currentBlockSymbol)
{
_initializedLocalsPaths.Add(relativePath);
}
break;
}
Visit(node.LeftSideNode);
}