Add relative method in FilePath

Author: feast107

extern/CodeAnalysis

@@ -12,10 +12,11 @@
     </PropertyGroup>
 
     <ItemGroup>
-        <PackageReference Include="Feast.CodeAnalysis" Version="0.1.8">
+        <PackageReference Include="Feast.CodeAnalysis" Version="0.1.11">
             <PrivateAssets>all</PrivateAssets>
             <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
         </PackageReference>
+        <PackageReference Include="Feast.CodeAnalysis.Literal" Version="0.1.4" />
         <PackageReference Include="Microsoft.CodeAnalysis.Analyzers" Version="3.3.4">
             <PrivateAssets>all</PrivateAssets>
             <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>

src/Antelcat.AutoGen.SourceGenerators/Antelcat.AutoGen.SourceGenerators.csproj

@@ -35,7 +35,7 @@ public readonly ref struct FilePath
     /// <summary>
     /// <see cref="System.IO.Path.GetPathRoot"/>
     /// </summary>
-    public string PathRoot => Path.GetPathRoot(path);
+    public string? PathRoot => Path.GetPathRoot(path);
 
     /// <summary>
     /// <see cref="System.IO.Path.GetExtension"/>
@@ -60,27 +60,33 @@ public readonly ref struct FilePath
 
     public static FilePath operator *(FilePath path, int times)
     {
-        var result = path.ToString();
+        var result = path.path;
         while (times-- > 0)
         {
-            result += path.ToString();
+            result += path.path;
         }
 
         return result;
     }
 
     public static FilePath operator <<(FilePath path, int times)
     {
-        var result = path.ToString();
+        var result = path.path;
         while (times-- > 0)
         {
             result = Path.GetDirectoryName(result);
         }
 
         return result;
     }
-
-    public static implicit operator FilePath(string path) => new(path);
+    
+#if NET || NETSTANDARD2_1
+    public static FilePath operator >>(FilePath from, FilePath to) => global::System.IO.Path.GetRelativePath(from, to);
+    
+    public static FilePath operator <<(FilePath to, FilePath from) => global::System.IO.Path.GetRelativePath(from, to);
+#endif
+
+    public static implicit operator FilePath(string path)    => new(path);
     public static implicit operator FilePath(string[] paths) => Path.Combine(paths);
-    public static implicit operator string(FilePath path) => path.ToString();
+    public static implicit operator string(FilePath path)    => path.path;
 }

src/Antelcat.AutoGen.SourceGenerators/FilePath.cs

@@ -2,6 +2,7 @@
 using System.Collections.Generic;
 using System.ComponentModel;
 using System.Diagnostics;
+using System.IO;
 using System.Linq;
 using System.Text.Json;
 using Antelcat.AutoGen.SourceGenerators.Generators;

src/Antelcat.AutoGen.Tests/SampleSourceGeneratorTests.cs

@@ -91,4 +91,11 @@ x is
             .First();
         var props = cs.GetProperties();
     }
+
+    [Test]
+    public void TestPath()
+    {
+        var relative1 = (FilePath)@"d:\A\B\C" >> @"d:\A\D";
+        var relative2 = (FilePath)@"d:\A\B\C" << @"d:\A\D";
+    }
 }

src/Antelcat.AutoGen.Tests/StringExtensionGeneratorTests.cs

@@ -7,9 +7,9 @@
         <IsPackable>true</IsPackable>
         <LangVersion>preview</LangVersion>
 
-        <Version>1.2.6</Version>
-        <FileVersion>1.2.4</FileVersion>
-        <AssemblyVersion>1.2.4</AssemblyVersion>
+        <Version>1.2.7</Version>
+        <FileVersion>1.2.7</FileVersion>
+        <AssemblyVersion>1.2.7</AssemblyVersion>
 
         <Authors>Antelcat</Authors>
         <Title>Antelcat.AutoGen</Title>