Adding formatting for spread element (#1179)

* Adding formatting for spread element

closes #1167

* add spread walker

Src/CSharpier.Tests/FormattingTests/TestFiles/cs/SpreadElements.test

@@ -0,0 +1,21 @@
+int[] someArray = [.. someOtherArray];
+int[] someOtherArray = [.. value1, .. value2, .. value3];
+
+int[] someOtherArray =
+[
+ .. value1________________________________,
+ .. value2________________________________,
+ .. value3________________________________
+];
+
+List<KeyValuePair<string, string>> list =
+[
+ .. attribute
+ .Targets.Select(target =>
+ KeyValuePair.Create(
+ target,
+ context.EntityDefinitions.TryGetValue(target, out var type) ? type.ClassName : null
+ )
+ )
+ .Where(kvp => kvp.Value != null)
+];

Src/CSharpier/SyntaxPrinter/SyntaxNodePrinters/SpreadElement.cs

@@ -0,0 +1,13 @@
+namespace CSharpier.SyntaxPrinter.SyntaxNodePrinters;
+
+internal static class SpreadElement
+{
+ public static Doc Print(SpreadElementSyntax node, FormattingContext context)
+ {
+ return Doc.Group(
+ Token.Print(node.OperatorToken, context),
+ " ",
+ Node.Print(node.Expression, context)
+ );
+ }
+}

Src/SyntaxFinder/Program.cs

@@ -1,4 +1,5 @@
-using Microsoft.CodeAnalysis.CSharp;
+using System.Reflection;
+using Microsoft.CodeAnalysis.CSharp;
 using SyntaxFinder;
 
 var files = Directory.EnumerateFiles(
@@ -47,4 +48,4 @@
  }
 );
 
-// ObjectInitializerWalker.WriteResult();
+typeToRun.GetMethod("WriteResult")?.Invoke(null, null);

Src/SyntaxFinder/SpreadWalker.cs

@@ -0,0 +1,44 @@
+namespace SyntaxFinder;
+
+using System.Collections.Concurrent;
+using Microsoft.CodeAnalysis;
+using Microsoft.CodeAnalysis.CSharp;
+using Microsoft.CodeAnalysis.CSharp.Syntax;
+
+public class SpreadWalker : CSharpSyntaxWalker
+{
+ private static int total;
+ private static int matching;
+ private readonly string file;
+
+ public SpreadWalker(string file)
+ {
+ this.file = file;
+ }
+
+ public override void VisitSpreadElement(SpreadElementSyntax node)
+ {
+ if (node.Kind() is SyntaxKind.SpreadElement)
+ {
+ this.VisitNode(node);
+ }
+
+ base.VisitSpreadElement(node);
+ }
+
+ private void VisitNode(SpreadElementSyntax node)
+ {
+ Console.WriteLine(node.Parent!.SyntaxTree.GetText().ToString(node.Parent!.FullSpan));
+ Interlocked.Increment(ref total);
+
+ if (node.Expression.GetLeadingTrivia().Any(o => o.Kind() is SyntaxKind.WhitespaceTrivia))
+ {
+ Interlocked.Increment(ref matching);
+ }
+ }
+
+ public static void WriteResult()
+ {
+ ResultWriter.WriteMatching(total, matching);
+ }
+}