feat(dart): Add build check for Dart (#886)

* feat(dart): Add build check for Dart

* feat(dart): Add dart analyze to check

* fix(dart): remove dart analyze

* feat(dart): Ignore unused variable and add dart analyze

.github/workflows/dart.yml

@@ -0,0 +1,36 @@
+# This workflow will install Dart SDK, run format and build with Dart
+
+name: Dart
+
+on:
+  push:
+    branches: ["main"]
+    paths: ["codes/dart/**/*.dart"]
+  pull_request:
+    branches: ["main"]
+    paths: ["codes/dart/**/*.dart"]
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+jobs:
+  build:
+    name: Dart ${{ matrix.dart-sdk }} on ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+        dart-sdk: [stable, beta, dev]
+    steps:
+      - uses: actions/checkout@v3
+      - name: Set up Dart ${{ matrix.dart-sdk }}
+        uses: dart-lang/setup-dart@v1
+        with:
+          sdk: ${{ matrix.dart-sdk}}
+      - name: Run format
+        run: dart format codes/dart
+      - name: Run analyze
+        run: dart analyze codes/dart
+      - name: Run build
+        run: dart codes/dart/build.dart

codes/dart/build.dart

@@ -0,0 +1,39 @@
+import 'dart:io';
+
+void main() {
+  Directory foldPath = Directory('codes/dart/');
+  List<FileSystemEntity> files = foldPath.listSync();
+  int totalCount = 0;
+  int errorCount = 0;
+  for (var file in files) {
+    if (file.path.endsWith('build.dart')) continue;
+    if (file is File && file.path.endsWith('.dart')) {
+      totalCount++;
+      try {
+        Process.runSync('dart', [file.path]);
+      } catch (e) {
+        errorCount++;
+        print('Error: $e');
+        print('File: ${file.path}');
+      }
+    } else if (file is Directory) {
+      List<FileSystemEntity> subFiles = file.listSync();
+      for (var subFile in subFiles) {
+        if (subFile is File && subFile.path.endsWith('.dart')) {
+          totalCount++;
+          try {
+            Process.runSync('dart', [subFile.path]);
+          } catch (e) {
+            errorCount++;
+            print('Error: $e');
+            print('File: ${file.path}');
+          }
+        }
+      }
+    }
+  }
+
+  print('===== Build Complete =====');
+  print('Total: $totalCount');
+  print('Error: $errorCount');
+}

codes/dart/chapter_array_and_linkedlist/array.dart

@@ -4,6 +4,8 @@
  * Author: Jefferson (JeffersonHuang77@gmail.com)
  */
 
+// ignore_for_file: unused_local_variable
+
 import 'dart:math';
 
 /* 随机访问元素 */

codes/dart/chapter_array_and_linkedlist/list.dart

@@ -4,6 +4,8 @@
  * Author: Jefferson (JeffersonHuang77@gmail.com)
  */
 
+// ignore_for_file: unused_local_variable
+
 /* Driver Code */
 void main() {
   /* 初始化列表 */

codes/dart/chapter_computational_complexity/space_complexity.dart

@@ -4,6 +4,8 @@
  * Author: Jefferson (JeffersonHuang77@gmail.com)
  */
 
+// ignore_for_file: unused_local_variable
+
 import 'dart:collection';
 import '../utils/list_node.dart';
 import '../utils/print_util.dart';

codes/dart/chapter_computational_complexity/time_complexity.dart

@@ -4,6 +4,8 @@
  * Author: Jefferson (JeffersonHuang77@gmail.com)
  */
 
+// ignore_for_file: unused_local_variable
+
 /* 常数阶 */
 int constant(int n) {
   int count = 0;