样本：
1 using System;
2 using System.Collections.Generic;
3 using System.Linq;
4 using System.Threading.Tasks;
5
6 namespace Student_mangent
7 {
8 public class Test
9 {
10 public static void Test_1(string val)
11 {
12 Console.WriteLine(val + "1");
13 }
14 public static void Test_2(string val)
15 {
16 Console.WriteLine(val + "2");
17 }
18 public static void Test_main()
19 {
20 string val = "3";
21 Test_2(val);
22 Test_1(val);
23 Console.WriteLine(val + "2");
24 }
25 }
26 }
识别代码：
1 using Microsoft.Build.Locator;
2 using Microsoft.CodeAnalysis;
3 using Microsoft.CodeAnalysis.CSharp;
4 using Microsoft.CodeAnalysis.CSharp.Symbols;
5 using Microsoft.CodeAnalysis.CSharp.Syntax;
6 using Microsoft.CodeAnalysis.MSBuild;
7 using Microsoft.CodeAnalysis.Text;
8 using System;
9 using System.Collections.Generic;
10 using System.IO;
11 using System.Linq;
12 using System.Text;
13 using System.Threading.Tasks;
14 using Newtonsoft.Json;
15
16 namespace Test_Roslyn
17 {
18 class Program
19 {
20 static async Task Main(string[] args)
21 {
22 var file = @"E:\VS2017\WorkSpace\Learn\Student_mangent\Student_mangent\Test.cs";
23 var programText = File.ReadAllText(file);
24 // 构建语法树
25 SyntaxTree tree = CSharpSyntaxTree.ParseText(programText);
26 CompilationUnitSyntax root = tree.GetCompilationUnitRoot();
27 CSharpCompilation Compilation = CSharpCompilation
28 .Create("test")
29 .AddSyntaxTrees(tree)
30 .AddReferences(MetadataReference.CreateFromFile(typeof(object).Assembly.Location));
31 //添加语义模型
32 SemanticModel model = Compilation.GetSemanticModel(tree);
33 var Value_methods = from methodDeclaration in root.DescendantNodes()
34 .OfType<MethodDeclarationSyntax>()
35 select methodDeclaration;
36 List<JsonModel> json_data = new List<JsonModel>();
37 foreach (var method in Value_methods)
38 {//构建字典
39 Console.WriteLine("*************************");
40 IMethodSymbol Symbol_method = model.GetDeclaredSymbol(method);
41 Console.WriteLine(Symbol_method);
42 Console.WriteLine(Symbol_method.Locations.Single());
43 var nodes = from methodDeclaration in root.DescendantNodes()
44 .OfType<InvocationExpressionSyntax>()
45 where methodDeclaration.Parent.Parent.Parent== method
46 select methodDeclaration;
47 foreach (var node in nodes.Distinct())
48 {
49 Console.WriteLine("&&&&&&&&&&&&&&&&&&&");
50 Console.WriteLine($"To=>{node}");
51 IMethodSymbol Symbol_node = (IMethodSymbol)model.GetSymbolInfo(node).Symbol;
52 Console.WriteLine(Symbol_node);
53 Console.WriteLine(Symbol_node.Locations.Single());
54 //进行
55
56
57 //json制造
58 //JsonModel JsonValue = new JsonModel();
59 //JsonValue.Source = method.Identifier.ValueText;
60 //JsonValue.Target = node + "";
61 //json_data.Add(JsonValue);
62 }
63 }
64 /*json制造
65 string json = JsonConvert.SerializeObject(json_data);
66 Console.WriteLine(json);
67 // 获取当前程序所在路径，并将要创建的文件命名为info.json
68 string fp = "E:/VS2017/WorkSpace/Learn/Roslyn/Test_Roslyn/Test_Roslyn/data/info.json";
69 Save_json(fp,json);
70 */
71 }
72 public static IEnumerable<InvocationExpressionSyntax> Get_SescendantNodes(string Text_code)
73 {
74
75 var Tree = CSharpSyntaxTree.ParseText(Text_code);
76 CompilationUnitSyntax Root = Tree.GetCompilationUnitRoot();
77 var Nodes = Root.DescendantNodes()
78 .OfType<InvocationExpressionSyntax>();
79 return Nodes;
80 }
81 public static Boolean Save_json(string Path,string value)
82 {
83 if (!File.Exists(Path)) // 判断是否已有相同文件
84 {
85 FileStream fs1 = new FileStream(Path, FileMode.Create, FileAccess.ReadWrite);
86 fs1.Close();
87 }
88 File.WriteAllText(Path, value);
89 return true;
90 }
91 public static object Read_json(string Path)
92 {
93 Object obji = JsonConvert.DeserializeObject<Object>(File.ReadAllText(Path)); // 尖括号<>中填入对象的类名
94 return obji;
95 }
96 public static void Get_syntax()
97 {
98 var file = @"E:\VS2017\WorkSpace\Learn\Roslyn\Data\Startup.cs";
99 var programText = File.ReadAllText(file);
100 // 构建语法树
101 SyntaxTree tree = CSharpSyntaxTree.ParseText(programText);
102 CompilationUnitSyntax root = tree.GetCompilationUnitRoot();
103 var Value_methods = from methodDeclaration in root.DescendantNodes()
104 .OfType<MethodDeclarationSyntax>()
105 //where methodDeclaration.Identifier.ValueText == "ConfigureServices"
106 //select methodDeclaration.Identifier.ValueText+"__==__"+methodDeclaration.Body.ToFullString();
107 select methodDeclaration;
108 foreach (var method in Value_methods)
109 {//构建字典
110 Console.WriteLine("*************************");
111 Console.WriteLine(method.Identifier.ValueText);
112 Console.WriteLine(method.ParameterList);
113 //Console.WriteLine(method.Body.ToFullString());
114 SyntaxTree tree_method = CSharpSyntaxTree.ParseText(method.Body.ToFullString());
115 CompilationUnitSyntax root_method = tree_method.GetCompilationUnitRoot();
116 var nodes = from methodDeclaration in root_method.DescendantNodes()
117 .OfType<ExpressionStatementSyntax>()
118 select methodDeclaration;
119 nodes.Distinct().ToList().ForEach(s => Console.WriteLine(s));
120 foreach (var node in nodes)
121 {
122 //Console.WriteLine(node);
123 }
124
125 }
126 }
127
128 public static void Just_test()
129 {
130 var file = @"E:\VS2017\WorkSpace\Learn\Roslyn\Data\Startup.cs";
131 var programText = File.ReadAllText(file);
132 // 构建语法树
133 SyntaxTree tree = CSharpSyntaxTree.ParseText(programText);
134 CompilationUnitSyntax root = tree.GetCompilationUnitRoot();
135 //添加引用类型=>String,Console
136 var compilation = CSharpCompilation.Create("Starup")
137 .AddReferences(MetadataReference.CreateFromFile(
138 typeof(string).Assembly.Location))
139 .AddSyntaxTrees(tree);
140
141 //添加语义模型
142 SemanticModel model = compilation.GetSemanticModel(tree);
143
144 var helloWorldStrings = root.DescendantNodes()
145 .OfType<MethodDeclarationSyntax>();
146
147 foreach (var helloWorldString in helloWorldStrings)
148 {
149 Console.WriteLine("HHHHH");
150 Console.WriteLine(helloWorldString.Identifier.ValueText);
151 // Use the semantic model for type information:
152 TypeInfo literalInfo = model.GetTypeInfo(helloWorldString);
153 var stringTypeSymbol = (INamedTypeSymbol)literalInfo.Type;
154 Console.WriteLine(stringTypeSymbol);
155 //进行查询
156 var allMembers = stringTypeSymbol.GetMembers();
157 Console.WriteLine(allMembers);
158 var methods = allMembers.OfType<IMethodSymbol>();
159 var publicStringReturningMethods = methods
160 .Where(m => m.DeclaredAccessibility == Accessibility.Public);
161 //删除重载
162 var distinctMethods = publicStringReturningMethods.Select(m => m.Name).Distinct();
163 foreach (var me in distinctMethods)
164 {
165 Console.WriteLine(me);
166 }
167 }
168 }
169 }
170 }
依赖关系抽取
效果：