c# - Visual Studio : find all references of a specific type

Question

我将一个 (C#) 结构转换为一个类，需要检查该类型的所有使用，以确保以前的隐式复制和现在的引用行为不会产生不良影响。

有没有办法找到所有引用，其中使用/涉及此特定类型？

我试过对该类型查找所有引用，并获取明确说明类型名称的所有位置，这是一个好的开始。

但是，我没有得到返回和修改此类型实例的位置。特别是我使用 var 将返回值分配给隐式类型变量的行，或对先前定义的变量的所有分配。

我可以使用任何功能或技巧吗？我想，这种结构到类转换的特殊情况经常发生。也许您对如何找到所有可能的问题有一些建议？

Answer 1

您可以手动重命名类...每个错误都是使用它的地方。但我认为 Visual Studio 会在出现一定数量的错误后停止。

您可以将类及其所有属性、所有方法标记为[Obsolete]。然后每次使用它们时都会收到警告。

请注意，[Obsolete]“技巧”有一些限制:

[Obsolete]
public class MyClass
{
}

public static void Test1(MyClass test2) // This line has a warning
{
    var y = test2; // ***This line doesn't have a warning***
    MyClass z = test2; // This line has a warning
}

所以它和Find all References一样...

另一种解决方案，基于Visual Studio的FxCop/代码分析:

这是一个自定义规则，基于http://blogs.msdn.com/b/codeanalysis/archive/2010/03/26/how-to-write-custom-static-code-analysis-rules-and-integrate-them-into-visual-studio-2010.aspx的说明

程序集的默认命名空间(您可以在属性中设置)必须是 MyCustomFxCopRules。平台目标 x86。

using Microsoft.FxCop.Sdk;

namespace MyCustomFxCopRules
{
    public class StructAssignmentFinder : BaseIntrospectionRule
    {
        public StructAssignmentFinder()
            : base("StructAssignmentFinder", "MyCustomFxCopRules.RuleMetadata", typeof(StructAssignmentFinder).Assembly)
        {
            var ms = new MyStruct();
            var tt = ms;
        }

        public override TargetVisibilities TargetVisibility
        {
            get
            {
                return TargetVisibilities.All;
            }
        }

        public override ProblemCollection Check(ModuleNode module)
        {
            Visit(module);
            return Problems;
        }

public override void VisitAssignmentStatement(AssignmentStatement assignment)
{
    // You could even use FullName
    if ((assignment.Source != null && assignment.Source.Type != null && assignment.Source.Type.Name.Name == "MyStruct") ||
        (assignment.Target != null && assignment.Target.Type != null && assignment.Target.Type.Name.Name == "MyStruct"))
    {
        Problem problem = new Problem(GetNamedResolution("Struct", assignment.Target.Type.Name.Name), assignment);
        Problems.Add(problem);
    }

    base.VisitAssignmentStatement(assignment);
}

public override void VisitConstruct(Construct construct)
{
    Method targetMethod = (Method)((MemberBinding)construct.Constructor).BoundMember;

    if (targetMethod.Parameters.Any(x => x.Type.Name.Name == "MyStruct"))
    {
        Problem problem = new Problem(GetNamedResolution("ParameterType", "MyStruct", targetMethod.Name.Name), construct);
        Problems.Add(problem);
    }

    base.VisitConstruct(construct);
}

public override void VisitMethodCall(MethodCall call)
{
    Method targetMethod = (Method)((MemberBinding)call.Callee).BoundMember;

    if (targetMethod.ReturnType.Name.Name == "MyStruct")
    {
        Problem problem = new Problem(GetNamedResolution("ReturnType", targetMethod.ReturnType.Name.Name, targetMethod.Name.Name), call);
        Problems.Add(problem);
    }

    if (targetMethod.Parameters.Any(x => x.Type.Name.Name == "MyStruct"))
    {
        Problem problem = new Problem(GetNamedResolution("ParameterType", "MyStruct", targetMethod.Name.Name), call);
        Problems.Add(problem);
    }

    base.VisitMethodCall(call);
}

RuleMetadata.xml(必须是嵌入式资源)

<?xml version="1.0" encoding="utf-8" ?>
<Rules FriendlyName="Rules about Structs">
  <Rule TypeName="StructAssignmentRule" Category="MyRules" CheckId="CR1000">
    <Name>Struct Assignment Finder</Name>
    <Description>Struct Assignment Finder</Description>
    <Url></Url>
    <Resolution Name="Struct">There is an assignment of struct '{0}'.</Resolution>
    <Resolution Name="ReturnType">'{0}' is the return type for a call to '{1}'.</Resolution>
    <Resolution Name="ParameterType">'{0}' is a parameter type for a call to '{1}'.</Resolution>
    <Email></Email>
    <MessageLevel Certainty="100">Warning</MessageLevel>
    <FixCategories>NonBreaking</FixCategories>
    <Owner></Owner>
  </Rule>
</Rules>

基于此，可以很容易地为我肯定忘记的其他极端情况添加其他规则:-)

我使用的测试文件:

public struct MyStruct
{

}

class Test
{
    public Test()
    {
        var ms = new MyStruct();
        var ms2 = ms;

        ms3 = ms;
        ms = ms3;

        ms4 = ms;
        ms = ms4;

        ms4 = ms4;

        new MyObject(default(MyStruct));
    }

    public MyStruct ms3;
    public MyStruct ms4 { get; set; }
}

public class MyObject
{
    public MyObject(MyStruct par1)
    {

    }
}

请注意，调试规则很棘手...使用 FxCopCmd.exe 进行调试非常容易，但如果直接由 Visual Studio 调用则不可能(我认为，不确定)进行调试。