如何使用Roslyn CTP将尾随行添加到AttribueList

Question

我试图[DataContractAttribute]使用Roslyn CTP语法生成一些属性.不幸的是,Roslyn将属性放在与属性相同的行上.

这是我得到的:

[DataContract]public int Id { get; set; }
[DataContract]public int? Age { get; set; }

我想要实现的目标:

[DataContract]
public int Id { get; set; }
[DataContract]
public int? Age { get; set; }

发电机代码:

string propertyType = GetPropertyType();
string propertyName = GetPropertyName();
var property = Syntax
    .PropertyDeclaration(Syntax.ParseTypeName(propertyType), propertyName)
    .WithModifiers(Syntax.TokenList(Syntax.Token(SyntaxKind.PublicKeyword)))
    .WithAttributeLists(
        Syntax.AttributeList(
            Syntax.SeparatedList<AttributeSyntax>(
                Syntax.Attribute(Syntax.ParseName("DataContract")))))
    .WithAccessorList(
        Syntax.AccessorList(
            Syntax.List(
                Syntax.AccessorDeclaration(SyntaxKind.GetAccessorDeclaration)
                    .WithSemicolonToken(Syntax.Token(SyntaxKind.SemicolonToken)),
                Syntax.AccessorDeclaration(SyntaxKind.SetAccessorDeclaration)
                    .WithSemicolonToken(Syntax.Token(SyntaxKind.SemicolonToken))
        )));

在将这些属性包装在类,命名空间和最后的CompilationUnit之后,我使用以下代码来获取字符串结果:

var compUnit = Syntax.CompilationUnit().WithMembers(...);
IFormattingResult fResult = compUnit.Format(new FormattingOptions(false, 4, 4));
string result = fResult.GetFormattedRoot().GetText().ToString();

Answer 1

一种方法是格式化代码，然后通过在所有属性属性列表中添加尾随琐事来对其进行修改。就像是：

var formattedUnit = (SyntaxNode)compUnit.Format(
    new FormattingOptions(false, 4, 4)).GetFormattedRoot();

formattedUnit = formattedUnit.ReplaceNodes(
    formattedUnit.DescendantNodes()
                 .OfType<PropertyDeclarationSyntax>()
                 .SelectMany(p => p.AttributeLists),
    (_, node) => node.WithTrailingTrivia(Syntax.Whitespace("\n")));

string result = formattedUnit.GetText().ToString();

Answer 2

像下面这样使用它：

.WithTrailingTrivia(SyntaxFactory.ElasticCarriageReturnLineFeed)