Implement csharpier-ignore for some node types (#584)

closes #581

Src/CSharpier.Generators/NodePrinterGenerator.sbntxt

@@ -23,6 +23,11 @@ namespace CSharpier.SyntaxPrinter
                 throw new InTooDeepException();
             }
 
+            if (CSharpierIgnore.IsNodeIgnored(syntaxNode))
+            {
+                return CSharpierIgnore.PrintWithoutFormatting(syntaxNode);
+            }
+
             depth++;
             try
             {

Src/CSharpier.Playground/ClientApp/src/FormatCode.ts

@@ -35,7 +35,7 @@ export const formatCode = async (code: string) => {
         }
     };
 
-    for (let x = 0; x < 5; x++) {
+    for (let x = 0; x < 20; x++) {
         try {
             return makeRequest();
         } catch {

Src/CSharpier.Tests/FormattingTests/TestFiles/CSharpierIgnore.cst

@@ -0,0 +1,20 @@
+// csharpier-ignore
+public class Unformatted     { }
+
+public class ClassName
+{
+    // csharpier-ignore
+    private string    unformatted;
+
+    public void MethodName()
+    {
+        // csharpier-ignore
+        var unformatted    = true;
+
+        if (true)
+        {
+            // csharpier-ignore
+            var unformatted    = true;
+        }
+    }
+}

Src/CSharpier.Tests/FormattingTests/TestFiles/CSharpierIgnore_Dont.cst

@@ -0,0 +1,15 @@
+public
+// csharpier-ignore
+class ClassName {
+    private void MethodName(
+    // csharpier-ignore
+    string one) {
+        var x
+        // csharpier-ignore
+                    = someRandomValue;
+
+        this.CallMethod(
+        // csharpier-ignore
+        true,        false);
+    }
+}

Src/CSharpier.Tests/FormattingTests/TestFiles/CSharpierIgnore_Dont.expected.cst

@@ -0,0 +1,20 @@
+public
+// csharpier-ignore
+class ClassName
+{
+    private void MethodName(
+        // csharpier-ignore
+        string one
+    )
+    {
+        var x
+        // csharpier-ignore
+        = someRandomValue;
+
+        this.CallMethod(
+            // csharpier-ignore
+            true,
+            false
+        );
+    }
+}

Src/CSharpier/SyntaxPrinter/CSharpierIgnore.cs

@@ -0,0 +1,33 @@
+namespace CSharpier.SyntaxPrinter;
+
+internal static class CSharpierIgnore
+{
+    public static bool IsNodeIgnored(SyntaxNode syntaxNode)
+    {
+        if (
+            syntaxNode.Parent
+            is not (
+                BaseTypeDeclarationSyntax
+                or BlockSyntax
+                or CompilationUnitSyntax
+                or NamespaceDeclarationSyntax
+            )
+        )
+        {
+            return false;
+        }
+
+        return syntaxNode
+            .GetLeadingTrivia()
+            .Any(
+                o =>
+                    o.Kind() is SyntaxKind.SingleLineCommentTrivia
+                    && o.ToString().Equals("// csharpier-ignore")
+            );
+    }
+
+    public static Doc PrintWithoutFormatting(SyntaxNode syntaxNode)
+    {
+        return syntaxNode.GetText().ToString().Trim();
+    }
+}