(refactor) Improve escaping by using library

example/pubspec.lock

@@ -270,6 +270,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "4.0.1"
+  lists:
+    dependency: transitive
+    description:
+      name: lists
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.0"
   logging:
     dependency: transitive
     description:
@@ -429,6 +436,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.1.0"
+  strings:
+    dependency: transitive
+    description:
+      name: strings
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.2.1"
   synchronized:
     dependency: transitive
     description:
@@ -464,6 +478,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.3.0"
+  unicode:
+    dependency: transitive
+    description:
+      name: unicode
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.3.0"
   vector_math:
     dependency: transitive
     description:

floor/pubspec.lock

@@ -263,6 +263,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "4.0.1"
+  lists:
+    dependency: transitive
+    description:
+      name: lists
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.0"
   logging:
     dependency: transitive
     description:
@@ -429,6 +436,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.1.0"
+  strings:
+    dependency: transitive
+    description:
+      name: strings
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.2.1"
   synchronized:
     dependency: transitive
     description:
@@ -464,6 +478,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.3.0"
+  unicode:
+    dependency: transitive
+    description:
+      name: unicode
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.3.0"
   vector_math:
     dependency: transitive
     description:

floor/test/integration/dao/person_dao.dart

@@ -34,6 +34,9 @@ abstract class PersonDao {
   @Query('SELECT * FROM person WHERE custom_name LIKE :name')
   Future<List<Person>> findPersonsWithNamesLike(String name);
 
+  @Query("SELECT * FROM person WHERE custom_name == ''")
+  Future<List<Person>> findPersonsWithEmptyName();
+
   @Insert(onConflict: OnConflictStrategy.replace)
   Future<void> insertPerson(Person person);
 

floor/test/integration/database_test.dart

@@ -115,6 +115,18 @@ void main() {
 
           expect(actual, equals(person));
         });
+
+        test("query with ''", () async {
+          final person = Person(1, 'Frank');
+          final personNoName = Person(2, '');
+          await personDao.insertPerson(person);
+          await personDao.insertPerson(personNoName);
+
+          final actual = await personDao.findPersonsWithEmptyName();
+
+          // find (only) personNoName
+          expect(actual, equals([personNoName]));
+        });
       });
 
       group('transaction', () {

floor_generator/lib/misc/extension/string_extension.dart

@@ -1,3 +1,5 @@
+import 'package:strings/strings.dart';
+
 extension StringExtension on String {
   /// Returns a copy of this string having its first letter lowercased, or the
   /// original string, if it's empty or already starts with a lower case letter.
@@ -48,8 +50,7 @@ extension NullableStringExtension on String? {
     if (this == null) {
       return 'null';
     } else {
-      //TODO escape correctly
-      return "'$this'";
+      return "'${escape(this!)}'";
     }
   }
 }

floor_generator/lib/writer/database_writer.dart

@@ -1,5 +1,6 @@
 import 'package:code_builder/code_builder.dart';
 import 'package:floor_generator/misc/annotation_expression.dart';
+import 'package:floor_generator/misc/extension/string_extension.dart';
 import 'package:floor_generator/value_object/database.dart';
 import 'package:floor_generator/value_object/entity.dart';
 import 'package:floor_generator/writer/writer.dart';
@@ -68,18 +69,18 @@ class DatabaseWriter implements Writer {
   }
 
   Method _generateOpenMethod(final Database database) {
-    final createTableStatements =
-        _generateCreateTableSqlStatements(database.entities)
-            .map((statement) => "await database.execute('$statement');")
-            .join('\n');
+    final createTableStatements = _generateCreateTableSqlStatements(
+            database.entities)
+        .map((statement) => 'await database.execute(${statement.toLiteral()});')
+        .join('\n');
     final createIndexStatements = database.entities
         .map((entity) => entity.indices.map((index) => index.createQuery()))
         .expand((statements) => statements)
-        .map((statement) => "await database.execute('$statement');")
+        .map((statement) => 'await database.execute(${statement.toLiteral()});')
         .join('\n');
     final createViewStatements = database.views
-        .map((view) => view.getCreateViewStatement())
-        .map((statement) => "await database.execute('''$statement''');")
+        .map((view) => view.getCreateViewStatement().toLiteral())
+        .map((statement) => 'await database.execute($statement);')
         .join('\n');
 
     final pathParameter = Parameter((builder) => builder

floor_generator/pubspec.lock

@@ -78,6 +78,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "8.0.5"
+  characters:
+    dependency: transitive
+    description:
+      name: characters
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.1.0"
   charcode:
     dependency: transitive
     description:
@@ -232,6 +239,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "4.0.1"
+  lists:
+    dependency: transitive
+    description:
+      name: lists
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.0"
   logging:
     dependency: transitive
     description:
@@ -393,6 +407,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.1.0"
+  strings:
+    dependency: "direct main"
+    description:
+      name: strings
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.2.1"
   term_glyph:
     dependency: transitive
     description:
@@ -435,6 +456,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.3.0"
+  unicode:
+    dependency: transitive
+    description:
+      name: unicode
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.3.0"
   vm_service:
     dependency: transitive
     description:

floor_generator/pubspec.yaml

@@ -19,6 +19,7 @@ dependencies:
     path: ../floor_annotation/
   meta: ^1.3.0
   source_gen: ^1.0.0
+  strings: ^0.2.1
 
 dev_dependencies:
   build_test: ^2.1.0

floor_generator/test/misc/extension/string_extension_test.dart

@@ -53,6 +53,14 @@ void main() {
       expect('A'.toLiteral(), equals("'A'"));
     });
 
+    test('Escaping \'', () {
+      expect("a'd'b".toLiteral(), equals("'a\\'d\\'b'"));
+    });
+
+    test('Escaping \n', () {
+      expect('A\ns\t'.toLiteral(), equals("'A\\ns\\t'"));
+    });
+
     test('long-string', () {
       final actual = 'The quick brown fox jumps over the lazy dog'.toLiteral();
       expect(actual, equals("'The quick brown fox jumps over the lazy dog'"));

floor_generator/test/writer/database_writer_test.dart

@@ -244,7 +244,7 @@ void main() {
                   'CREATE TABLE IF NOT EXISTS `Person` (`id` INTEGER NOT NULL, `name` TEXT NOT NULL, PRIMARY KEY (`id`))');
 
               await database.execute(
-                  '''CREATE VIEW IF NOT EXISTS `names` AS SELECT custom_name as name FROM person''');
+                  'CREATE VIEW IF NOT EXISTS `names` AS SELECT custom_name as name FROM person');
 
               await callback?.onCreate?.call(database, version);
             },