public override SyntaxNode VisitVariableDeclarator(VariableDeclaratorSyntax node)
{
if (node.Initializer == null)
{
return(base.VisitVariableDeclarator(node));
}
if (node.Parent is VariableDeclarationSyntax == false)
{
return(base.VisitVariableDeclarator(node));
}
if (node.Parent.Parent is FieldDeclarationSyntax == false)
{
return(base.VisitVariableDeclarator(node));
}
if ((node.Parent.Parent as FieldDeclarationSyntax).Modifiers.Any(x => x.ValueText == "const"))
{
return(base.VisitVariableDeclarator(node));
}
var value = node.Initializer.Value;
if
(
!CheckOption((int)SimplifyClassFieldDeclaration.CleanupTypes.RemoveClassFieldsInitializerNull) &&
!CheckOption((int)SimplifyClassFieldDeclaration.CleanupTypes.RemoveClassFieldsInitializerLiteral)
)
{
return(base.VisitVariableDeclarator(node));
}
if (value is LiteralExpressionSyntax)
{
var variableTypeNode = GetSystemTypeOfTypeNode((node.Parent as VariableDeclarationSyntax));
var valueObj = (value as LiteralExpressionSyntax).Token.Value;
if (TypesMapItem.GetAllPredefinedTypesDic().ContainsKey(variableTypeNode))
{
if (CheckOption((int)SimplifyClassFieldDeclaration.CleanupTypes.RemoveClassFieldsInitializerLiteral) == false)
{
return(base.VisitVariableDeclarator(node));
}
var typeItem = TypesMapItem.GetAllPredefinedTypesDic()[variableTypeNode];
if ((typeItem.DefaultValue == null && valueObj != null) || (typeItem.DefaultValue != null && !typeItem.DefaultValue.Equals(valueObj)))
{
return(base.VisitVariableDeclarator(node));
}
}
else
{
if (CheckOption((int)SimplifyClassFieldDeclaration.CleanupTypes.RemoveClassFieldsInitializerNull) == false)
{
return(base.VisitVariableDeclarator(node));
}
if (valueObj != null)
{
return(base.VisitVariableDeclarator(node));
}
}
if (isReportOnlyMode)
{
var lineSpan = node.GetFileLinePosSpan();
AddReport(new ChangesReport(node)
{
LineNumber = lineSpan.StartLinePosition.Line,
Column = lineSpan.StartLinePosition.Character,
Message = "Field initialize with \"= null;\" or \"= 0;\" can be removed",
Generator = nameof(SimplifyClassFieldDeclarations)
});
}
node = node.WithInitializer(null).WithoutTrailingTrivia();
}
return(base.VisitVariableDeclarator(node));
}