From f37a1ee1e2577a0e8fd76d4c965abb93cd99a6cf Mon Sep 17 00:00:00 2001
From: Fuwn <contact@fuwn.me>
Date: Wed, 11 Feb 2026 11:12:10 +0000
Subject: feat: Support JSON configuration file

---
 engine/engine.go | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

(limited to 'engine')

diff --git a/engine/engine.go b/engine/engine.go
index 0b37dd4..6f7b7a0 100644
--- a/engine/engine.go
+++ b/engine/engine.go
@@ -11,7 +11,8 @@ const (
 )
 
 type Engine struct {
-	CommentMode CommentMode
+	CommentMode           CommentMode
+	GroupSingleLineScopes bool
 }
 
 func (e *Engine) format(events []LineEvent, resultBuilder *strings.Builder) {
@@ -21,6 +22,7 @@ func (e *Engine) format(events []LineEvent, resultBuilder *strings.Builder) {
 	previousWasComment := false
 	previousWasTopLevel := false
 	previousWasScoped := false
+	previousWasSingleLineScope := false
 
 	for eventIndex, event := range events {
 		if event.InRawString {
@@ -48,6 +50,7 @@ func (e *Engine) format(events []LineEvent, resultBuilder *strings.Builder) {
 		needsBlankLine := false
 		currentIsTopLevel := event.HasASTInfo && event.IsTopLevel
 		currentIsScoped := event.HasASTInfo && event.IsScoped
+		currentIsSingleLineScope := currentIsScoped && !event.IsOpeningBrace && !event.IsClosingBrace
 
 		if hasWrittenContent && !previousWasOpenBrace && !event.IsClosingBrace && !event.IsCaseLabel && !event.IsContinuation {
 			if currentIsTopLevel && previousWasTopLevel && currentStatementType != previousStatementType {
@@ -55,7 +58,9 @@ func (e *Engine) format(events []LineEvent, resultBuilder *strings.Builder) {
 					needsBlankLine = true
 				}
 			} else if event.HasASTInfo && (currentIsScoped || previousWasScoped) {
-				if !(e.CommentMode == CommentsFollow && previousWasComment) {
+				if e.GroupSingleLineScopes && currentIsSingleLineScope && previousWasSingleLineScope && currentStatementType == previousStatementType {
+					needsBlankLine = false
+				} else if !(e.CommentMode == CommentsFollow && previousWasComment) {
 					needsBlankLine = true
 				}
 			} else if currentStatementType != "" && previousStatementType != "" && currentStatementType != previousStatementType {
@@ -104,10 +109,12 @@ func (e *Engine) format(events []LineEvent, resultBuilder *strings.Builder) {
 			previousStatementType = event.StatementType
 			previousWasTopLevel = event.IsTopLevel
 			previousWasScoped = event.IsScoped
+			previousWasSingleLineScope = currentIsSingleLineScope
 		} else if currentStatementType != "" {
 			previousStatementType = currentStatementType
 			previousWasTopLevel = false
 			previousWasScoped = false
+			previousWasSingleLineScope = false
 		}
 	}
 
-- 
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