1.3

lib/builder.dart

@@ -0,0 +1,47 @@
+import 'package:source_gen/source_gen.dart';
+import 'package:build/build.dart';
+import 'package:yaml/yaml.dart';
+
+Builder iipService(BuilderOptions options) {
+  return LibraryBuilder(TemplateGenerator(), generatedExtension: '.info.dart');
+}
+
+class TemplateBuilder implements Builder {
+  //BuilderOptions options;
+  String _fileName;
+  TemplateBuilder([BuilderOptions options]) : _fileName = _get_dest(options);
+
+  @override
+  Future build(BuildStep buildStep) async {
+    final id = AssetId(buildStep.inputId.package, _fileName);
+
+    // generate
+    var content = "Testing";
+
+    await buildStep.writeAsString(id, content);
+  }
+
+  static String _get_dest(BuilderOptions options) {
+    const defaultDestination = 'lib/src/iip_template.dart';
+    if (options == null) return defaultDestination;
+    if (options.config == null) return defaultDestination;
+    return options.config['destination_file'] as String ?? defaultDestination;
+  }
+
+  @override
+  Map<String, List<String>> get buildExtensions {
+    return {
+      '.iip.yaml': [".iip.dart"]
+    };
+  }
+}
+
+class TemplateGenerator extends Generator {
+  @override
+  String generate(LibraryReader library, BuildStep buildStep) {
+    return '''
+// Source library: ${library.element.source.uri}
+const Testinggggg = 3;
+''';
+  }
+}