From 6601b8056994b61ff52e49246f44964356b7fae0 Mon Sep 17 00:00:00 2001
From: magic-akari <akari.ccino@gmail.com>
Date: Tue, 10 Dec 2024 15:46:44 +0800
Subject: [PATCH] feat: add language version support to formatting options

---
 extra/dart_fmt.d.ts |  1 +
 extra/dart_fmt.js   |  3 +++
 lib/binding.dart    |  6 ++++--
 lib/dart_fmt.dart   | 11 +++++++++--
 pubspec.yaml        |  1 +
 5 files changed, 18 insertions(+), 4 deletions(-)

diff --git a/extra/dart_fmt.d.ts b/extra/dart_fmt.d.ts
index 67556e4..5850092 100644
--- a/extra/dart_fmt.d.ts
+++ b/extra/dart_fmt.d.ts
@@ -3,6 +3,7 @@ export function format(input: string, filename: string, config?: LayoutConfig):
 interface LayoutConfig {
 	line_width?: number;
 	line_ending?: "lf" | "crlf";
+	language_version?: string;
 }
 
 export type InitInput = RequestInfo | URL | Response | BufferSource | WebAssembly.Module;
diff --git a/extra/dart_fmt.js b/extra/dart_fmt.js
index be85bc5..57bf65b 100644
--- a/extra/dart_fmt.js
+++ b/extra/dart_fmt.js
@@ -70,6 +70,9 @@ export function format(source, filename = "stdin.dart", config = {}) {
 	if (options.line_ending === "crlf") {
 		options.lineEnding = "\r\n";
 	}
+	if(options.language_version) {
+		options.languageVersion = options.language_version;
+	}
 
 	const result = dart_fmt(source, filename, JSON.stringify(options));
 	const err = result[0] === "x";
diff --git a/lib/binding.dart b/lib/binding.dart
index d3adf0f..840464f 100644
--- a/lib/binding.dart
+++ b/lib/binding.dart
@@ -5,17 +5,19 @@ import 'package:dart_fmt/dart_fmt.dart';
 class Options {
   final int? pageWidth;
   final String? lineEnding;
+  final String? languageVersion;
 
   Options.fromJson(Map<String, dynamic> json)
       : pageWidth = json['pageWidth'] as int?,
-        lineEnding = json['lineEnding'] as String?;
+        lineEnding = json['lineEnding'] as String?,
+        languageVersion = json['languageVersion'] as String?;
 }
 
 String formatWrapper(String source, String filename, String options) {
   final config = Options.fromJson(jsonDecode(options));
 
   try {
-    return "o${format(source, filename, pageWidth: config.pageWidth, lineEnding: config.lineEnding)}";
+    return "o${format(source, filename, pageWidth: config.pageWidth, lineEnding: config.lineEnding, version: config.languageVersion)}";
   } catch (e) {
     return "x$e";
   }
diff --git a/lib/dart_fmt.dart b/lib/dart_fmt.dart
index b7c844a..a338df8 100644
--- a/lib/dart_fmt.dart
+++ b/lib/dart_fmt.dart
@@ -1,7 +1,14 @@
 import 'package:dart_style/dart_style.dart';
+import 'package:pub_semver/pub_semver.dart';
 
 String format(String source, String filename,
-    {int? pageWidth, String? lineEnding}) {
-  final formatter = DartFormatter(pageWidth: pageWidth, lineEnding: lineEnding);
+    {int? pageWidth, String? lineEnding, String? version}) {
+  final languageVersion = version != null
+      ? Version.parse(version)
+      : DartFormatter.latestLanguageVersion;
+  final formatter = DartFormatter(
+      pageWidth: pageWidth,
+      lineEnding: lineEnding,
+      languageVersion: languageVersion);
   return formatter.format(source, uri: filename);
 }
diff --git a/pubspec.yaml b/pubspec.yaml
index 4126821..9edd974 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -9,6 +9,7 @@ environment:
 # Add regular dependencies here.
 dependencies:
   dart_style: ^2.3.7
+  pub_semver: ^2.1.4
 
 dev_dependencies:
   lints: ^5.0.0