feat: use a parser and simplify the syntax

Fluidic.Sample/Fluidic.Sample.csproj → Cutout.Sample/Cutout.Sample.csproj

@@ -3,10 +3,10 @@
     <PropertyGroup>
         <TargetFramework>net8.0</TargetFramework>
         <Nullable>enable</Nullable>
-        <RootNamespace>Fluidic.Sample</RootNamespace>
+        <RootNamespace>Cutout.Sample</RootNamespace>
     </PropertyGroup>
 
     <ItemGroup>
-        <ProjectReference Include="..\Fluidic\Fluidic.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false"/>
+        <ProjectReference Include="..\Cutout\Cutout.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false"/>
     </ItemGroup>
 </Project>

Cutout.Sample/Examples.cs

@@ -0,0 +1,9 @@
+using System.Text;
+
+namespace Cutout.Sample;
+
+public static partial class Examples
+{
+    [Template("This is a very simple example")]
+    public static partial void Test(this StringBuilder builder);
+}

Cutout.Tests/CallStatementTests.Case1a#Test.Test.g.verified.cs

@@ -0,0 +1,18 @@
+//HintName: Test.Test.g.cs
+// <auto-generated/>
+#nullable enable
+
+using Cutout;
+using System.Diagnostics.CodeAnalysis;
+using System;
+
+namespace <global namespace>;
+
+public static partial class Test
+{
+    public static partial void Test(this StringBuilder builder, String product)
+    {
+        builder.Append(@"Some text before ");
+        Case2(builder,product);
+    }
+}

Cutout.Tests/CallStatementTests.cs

@@ -0,0 +1,37 @@
+using System.Text;
+using Cutout.Tests.Extensions;
+
+namespace Cutout.Tests;
+
+public static partial class CallTemplates
+{
+    public sealed record Product(string Title);
+
+    private const string CallExample1 = "Some text before {{ call Case2(product.Title) }}";
+
+    [Template(CallExample1)]
+    public static partial void Case1(this StringBuilder builder, Product product);
+
+    private const string CallExample2 = "The product title is {{ title }}";
+
+    [Template(CallExample2)]
+    public static partial void Case2(this StringBuilder builder, string title);
+}
+
+public sealed class CallStatementTests
+{
+    [Fact(DisplayName = "A call statement can used")]
+    public void Case1()
+    {
+        var builder = new StringBuilder();
+        builder.Case1(new CallTemplates.Product("Awesome Shoes"));
+        Assert.Equal("Some text before The product title is Awesome Shoes", builder.ToString());
+    }
+
+    [Fact(DisplayName = "Case1 produces the expected source")]
+    public Task Case1a() =>
+        """
+            [Template("Some text before {{ call Case2(product) }}")]
+            public static partial void Test(this StringBuilder builder, string product);
+            """.VerifyTemplate();
+}

Fluidic.Tests/Fluidic.Tests.csproj → Cutout.Tests/Cutout.Tests.csproj

@@ -6,10 +6,6 @@
         <TreatWarningsAsErrors>false</TreatWarningsAsErrors>
     </PropertyGroup>
 
-    <ItemGroup>
-        <AdditionalFiles Include="*.liquid"/>
-    </ItemGroup>
-
     <ItemGroup>
         <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Analyzer.Testing"/>
         <PackageReference Include="Verify.SourceGenerators"/>
@@ -22,7 +18,7 @@
     </ItemGroup>
 
     <ItemGroup>
-        <ProjectReference Include="..\Fluidic\Fluidic.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="true"/>
+        <ProjectReference Include="..\Cutout\Cutout.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="true"/>
     </ItemGroup>
 
 </Project>

Fluidic.Tests/Extensions/GeneratorDriverExtensions.cs → Cutout.Tests/Extensions/GeneratorDriverExtensions.cs

@@ -4,7 +4,7 @@
 using Microsoft.CodeAnalysis.CSharp;
 using Microsoft.CodeAnalysis.Text;
 
-namespace Fluidic.Tests.Extensions;
+namespace Cutout.Tests.Extensions;
 
 public sealed class TestAdditionalFile(string path, SourceText text) : AdditionalText
 {
@@ -28,23 +28,23 @@ ImmutableArray<AdditionalText> additionalTexts
             source != null ? [CSharpSyntaxTree.ParseText(source)] : [],
             [
                 MetadataReference.CreateFromFile(typeof(object).Assembly.Location),
-                MetadataReference.CreateFromFile(typeof(StringTemplateAttribute).Assembly.Location),
+                MetadataReference.CreateFromFile(typeof(TemplateAttribute).Assembly.Location),
             ],
             new CSharpCompilationOptions(OutputKind.DynamicallyLinkedLibrary)
         );
-        var generator = new StringTemplateSourceGenerator();
+        var generator = new TemplateSourceGenerator();
         var driver = CSharpGeneratorDriver.Create(generator).AddAdditionalTexts(additionalTexts);
         return driver.RunGenerators(compilation);
     }
 
-    internal static Task VerifyStringTemplate(
+    internal static Task VerifyTemplate(
         this string? source,
         [CallerFilePath] string sourceFile = ""
     )
     {
         var driver = $$"""
             using System;
-            using Fluidic;
+            using Cutout;
 
             internal static class Test
             {
@@ -54,28 +54,8 @@ internal static class Test
         return Verify(driver, sourceFile: sourceFile).IgnoreStandardSupportCode();
     }
 
-    internal static Task VerifyFileTemplate(
-        this string? source,
-        ImmutableArray<AdditionalText> additionalTexts,
-        [CallerFilePath] string sourceFile = ""
-    )
-    {
-        var driver = $$"""
-            using System;
-            using Fluidic;
-
-            internal static class Test
-            {
-               {{source}}
-            }
-            """.BuildDriver(additionalTexts);
-        return Verify(driver, sourceFile: sourceFile).IgnoreStandardSupportCode();
-    }
-
     internal static SettingsTask IgnoreStandardSupportCode(this SettingsTask settings)
     {
-        return settings.IgnoreGeneratedResult(x =>
-            x.HintName is "StringTemplateAttribute.g.cs" or "FileTemplateAttribute.g.cs"
-        );
+        return settings.IgnoreGeneratedResult(x => x.HintName is "TemplateAttribute.g.cs");
     }
 }

Cutout.Tests/ForStatementTests.Case1a#Test.Test.g.verified.cs

@@ -0,0 +1,23 @@
+//HintName: Test.Test.g.cs
+// <auto-generated/>
+#nullable enable
+
+using Cutout;
+using System.Diagnostics.CodeAnalysis;
+using System;
+
+namespace <global namespace>;
+
+public static partial class Test
+{
+    public static partial void Test(this StringBuilder builder, String product)
+    {
+        builder.Append(@"This is a test for tags [");
+        foreach (var tag in product.Tags)
+        {
+            builder.Append(tag);
+            builder.Append(@"; ");
+        }
+        builder.Append(@"] which is cool.");
+    }
+}

Cutout.Tests/ForStatementTests.Case2a#Test.Test.g.verified.cs

@@ -0,0 +1,24 @@
+//HintName: Test.Test.g.cs
+// <auto-generated/>
+#nullable enable
+
+using Cutout;
+using System.Diagnostics.CodeAnalysis;
+using System;
+
+namespace <global namespace>;
+
+public static partial class Test
+{
+    public static partial void Test(this StringBuilder builder, String product)
+    {
+        builder.Append(@"This is a test for tags [");
+        while (i < product.Tags.Length)
+        {
+            builder.Append(i + 1);
+            builder.Append(@". ");
+            builder.Append(product.Tags[i++]);
+        }
+        builder.Append(@"] which is cool.");
+    }
+}

Cutout.Tests/ForStatementTests.Case3a#Test.Test.g.verified.cs

@@ -0,0 +1,32 @@
+//HintName: Test.Test.g.cs
+// <auto-generated/>
+#nullable enable
+
+using Cutout;
+using System.Diagnostics.CodeAnalysis;
+using System;
+
+namespace <global namespace>;
+
+public static partial class Test
+{
+    public static partial void Test(this StringBuilder builder, String product)
+    {
+        builder.Append(@"This is a test for tags [");
+        for (var i = 0; i < product.Tags.Length; i++)
+        {
+            if (product.Tags[i] == "awesome")
+            {
+                continue;
+            }
+            else if (product.Tags[i] == "shoes")
+            {
+                break;
+            }
+            builder.Append(i + 1);
+            builder.Append(@". ");
+            builder.Append(product.Tags[i]);
+        }
+        builder.Append(@"] which is cool.");
+    }
+}