在Roslyn分析器中查找字段和类型的有效可访问性

using Microsoft.CodeAnalysis;
using Microsoft.CodeAnalysis.CSharp;
using Microsoft.CodeAnalysis.CSharp.Syntax;

// 解析源代码
SyntaxTree syntaxTree = CSharpSyntaxTree.ParseText(sourceCode);

// 获取根节点
SyntaxNode root = syntaxTree.GetRoot();

// 查找字段和类型的声明节点
var fieldDeclarations = root.DescendantNodes().OfType<FieldDeclarationSyntax>();
var typeDeclarations = root.DescendantNodes().OfType<TypeDeclarationSyntax>();

// 使用符号分析器获取字段和类型的符号信息
SemanticModel semanticModel = compilation.GetSemanticModel(syntaxTree);
foreach (var fieldDeclaration in fieldDeclarations)
{
    foreach (var variable in fieldDeclaration.Declaration.Variables)
    {
        var symbol = semanticModel.GetDeclaredSymbol(variable);
        // 获取字段的访问修饰符和可访问性信息
        Accessibility accessibility = symbol.DeclaredAccessibility;
        // 处理字段的访问修饰符和可访问性信息
    }
}

foreach (var typeDeclaration in typeDeclarations)
{
    var symbol = semanticModel.GetDeclaredSymbol(typeDeclaration);
    // 获取类型的访问修饰符和可访问性信息
    Accessibility accessibility = symbol.DeclaredAccessibility;
    // 处理类型的访问修饰符和可访问性信息
}