string GetSystemTypeOfTypeNode(VariableDeclarationSyntax d)
{
if (d.Type is PredefinedTypeSyntax)
{
return(TypesMapItem.GetAllPredefinedTypesDic()[(d.Type as PredefinedTypeSyntax).Keyword.ValueText].BuiltInName.Trim());
}
return(d.Type.ToFullString().Trim());
}
public SyntaxNode ConvertFullNameTypesToBuiltInTypesHelper(SyntaxNode initialSource)
{
var builtInTypesMapDic = TypesMapItem.GetBuiltInTypesDic();
var selectedTokensList =
initialSource
.DescendantNodes()
.Where
(
n =>
(n is IdentifierNameSyntax || n is QualifiedNameSyntax)
&&
builtInTypesMapDic.ContainsKey(n.WithoutTrivia().ToFullString())
);
return(initialSource.ReplaceNodes(
selectedTokensList,
(oldNode1, oldNode2) =>
{
if (oldNode1.Parent is QualifiedNameSyntax)
{
return oldNode1;
}
if (oldNode1.Parent is MemberAccessExpressionSyntax)
{
if ((oldNode1.Parent as MemberAccessExpressionSyntax).Expression != oldNode1)
{
return oldNode1;
}
var symbol = ProjectItemDetails.SemanticModel.GetSymbolInfo(oldNode1).Symbol;
if (symbol != null && symbol.Kind != SymbolKind.NamedType)
{
return oldNode1;
}
}
else if (oldNode1 is IdentifierNameSyntax == false && oldNode1 is QualifiedNameSyntax == false)
{
return oldNode1;
}
else
{
var symbol = ProjectItemDetails.SemanticModel.GetSymbolInfo(oldNode1).Symbol;
if (symbol != null && symbol.Kind != SymbolKind.NamedType)
{
return oldNode1;
}
}
return
builtInTypesMapDic[oldNode1.WithoutTrivia().ToFullString()]
.NewNode
.WithLeadingTrivia(oldNode1.GetLeadingTrivia())
.WithTrailingTrivia(oldNode1.GetTrailingTrivia());
}
));
}
public SyntaxNode ConvertFullNameTypesToBuiltInTypesHelper(SyntaxNode initialSource)
{
var builtInTypesMapDic = TypesMapItem.GetBuiltInTypesDic();
var selectedTokensList =
initialSource
.DescendantNodes()
.Where
(
n =>
(n is IdentifierNameSyntax || n is QualifiedNameSyntax)
&&
builtInTypesMapDic.ContainsKey(n.WithoutTrivia().ToFullString())
);
return(initialSource.ReplaceNodes(
selectedTokensList,
(oldNode1, oldNode2) =>
{
if (oldNode1.Parent is QualifiedNameSyntax)
{
return oldNode1;
}
if (oldNode1.Parent is MemberAccessExpressionSyntax)
{
if ((oldNode1.Parent as MemberAccessExpressionSyntax).Expression != oldNode1)
{
return oldNode1;
}
var symbol = SemanticModel.GetSymbolInfo(oldNode1).Symbol;
if (symbol != null && symbol.Kind != SymbolKind.NamedType)
{
return oldNode1;
}
}
else if (oldNode1 is IdentifierNameSyntax == false && oldNode1 is QualifiedNameSyntax == false)
{
return oldNode1;
}
else
{
var symbol = SemanticModel.GetSymbolInfo(oldNode1).Symbol;
if (symbol != null && symbol.Kind != SymbolKind.NamedType)
{
return oldNode1;
}
}
var lineSpan = oldNode1.GetFileLinePosSpan();
AddReport(new ChangesReport(oldNode1)
{
LineNumber = lineSpan.StartLinePosition.Line,
Column = lineSpan.StartLinePosition.Character,
Message = "Convert full name types to built in Types",
Generator = nameof(ConvertFullNameTypesToBuiltInTypes)
});
return
builtInTypesMapDic[oldNode1.WithoutTrivia().ToFullString()]
.NewNode
.WithLeadingTrivia(oldNode1.GetLeadingTrivia())
.WithTrailingTrivia(oldNode1.GetTrailingTrivia());
}
));
}
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.Remove_Class_Fields_Initializer_Null) &&
!CheckOption((int)SimplifyClassFieldDeclaration.CleanupTypes.Remove_Class_Fields_Initializer_Literal)
)
{
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.Remove_Class_Fields_Initializer_Literal) == 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.Remove_Class_Fields_Initializer_Null) == false)
{
return(base.VisitVariableDeclarator(node));
}
if (valueObj != null)
{
return(base.VisitVariableDeclarator(node));
}
}
node = node.WithInitializer(null).WithoutTrailingTrivia();
}
return(base.VisitVariableDeclarator(node));
}
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));
}
