Extract repetitive code into a private startsOnNewline(_:) function in CodeGenerationFormat

Author: roopekv

CodeGeneration/Sources/Utils/CodeGenerationFormat.swift

@@ -99,10 +99,7 @@ public class CodeGenerationFormat: BasicFormat {
       let inMethodCallThatStartsOnNewline =
         if let functionCallExpr = node.parent?.as(FunctionCallExprSyntax.self),
           let memberAccessExpr = functionCallExpr.calledExpression.as(MemberAccessExprSyntax.self),
-          memberAccessExpr.period.leadingTrivia.contains(where: \.isNewline)
-            || memberAccessExpr.period.previousToken(viewMode: .sourceAccurate)?.trailingTrivia.contains(
-              where: \.isNewline
-            ) ?? false
+          startsOnNewline(memberAccessExpr.period)
         {
           true
         } else {
@@ -132,10 +129,7 @@ public class CodeGenerationFormat: BasicFormat {
       if indentManually {
         return false
       }
-      let startsOnNewline =
-        node.leadingTrivia.contains(where: \.isNewline)
-        || node.previousToken(viewMode: .sourceAccurate)?.trailingTrivia.contains(where: \.isNewline) ?? false
-      if !startsOnNewline {
+      if !startsOnNewline(node) {
         return false
       }
     default:
@@ -172,11 +166,7 @@ public class CodeGenerationFormat: BasicFormat {
       var child = child
       child.trailingTrivia = Trivia(pieces: child.trailingTrivia.drop(while: \.isSpaceOrTab))
 
-      let startsOnNewline =
-        child.leadingTrivia.contains(where: \.isNewline)
-        || child.previousToken(viewMode: .sourceAccurate)?.trailingTrivia.contains(where: \.isNewline) ?? false
-
-      if !startsOnNewline {
+      if !startsOnNewline(child) {
         child.leadingTrivia = indentedNewline + child.leadingTrivia
       }
       return child
@@ -195,3 +185,8 @@ public class CodeGenerationFormat: BasicFormat {
     return formattedChildren
   }
 }
+
+private func startsOnNewline(_ node: some SyntaxProtocol) -> Bool {
+  return node.leadingTrivia.contains(where: \.isNewline)
+    || node.previousToken(viewMode: .sourceAccurate)?.trailingTrivia.contains(where: \.isNewline) ?? false
+}