| // Copyright 2014 The Flutter Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| // This file is used by ../analyze_snippet_code_test.dart, which depends on the |
| // precise contents (including especially the comments) of this file. |
| |
| // Examples can assume: |
| // bool _visible = true; |
| // class _Text extends Text { |
| // const _Text(super.text); |
| // const _Text.__(super.text); |
| // } |
| |
| /// A blabla that blabla its blabla blabla blabla. |
| /// |
| /// Bla blabla blabla its blabla into an blabla blabla and then blabla the |
| /// blabla back into the blabla blabla blabla. |
| /// |
| /// Bla blabla of blabla blabla than 0.0 and 1.0, this blabla is blabla blabla |
| /// blabla it blabla pirates blabla the blabla into of blabla blabla. Bla the |
| /// blabla 0.0, the penzance blabla is blabla not blabla at all. Bla the blabla |
| /// 1.0, the blabla is blabla blabla blabla an blabla blabla. |
| /// |
| /// {@tool snippet} |
| /// Bla blabla blabla some [Text] when the `_blabla` blabla blabla is true, and |
| /// blabla it when it is blabla: |
| /// |
| /// ```dart |
| /// new Opacity( // error (unnecessary_new) |
| /// opacity: _visible ? 1.0 : 0.0, |
| /// child: const Text('Poor wandering ones!'), |
| /// ) |
| /// ``` |
| /// {@end-tool} |
| /// |
| /// {@tool snippet} |
| /// Bla blabla blabla some [Text] when the `_blabla` blabla blabla is true, and |
| /// blabla it when it is blabla: |
| /// |
| /// ```dart |
| /// final GlobalKey globalKey = GlobalKey(); |
| /// ``` |
| /// |
| /// ```dart |
| /// // continuing from previous example... |
| /// Widget build(BuildContext context) { |
| /// return Opacity( |
| /// key: globalKey, |
| /// opacity: _visible ? 1.0 : 0.0, |
| /// child: const Text('Poor wandering ones!'), |
| /// ); |
| /// } |
| /// ``` |
| /// {@end-tool} |
| /// |
| /// {@tool snippet} |
| /// Bla blabla blabla some [Text] when the `_blabla` blabla blabla is true, and |
| /// blabla finale blabla: |
| /// |
| /// ```dart |
| /// Opacity( |
| /// opacity: _visible ? 1.0 : 0.0, |
| /// child: const Text('Poor wandering ones!'), |
| /// ) |
| /// ``` |
| /// {@end-tool} |
| /// |
| /// {@tool snippet} |
| /// regular const constructor |
| /// |
| /// ```dart |
| /// const Text('Poor wandering ones!') |
| /// ``` |
| /// {@end-tool} |
| /// |
| /// {@tool snippet} |
| /// const private constructor |
| /// ```dart |
| /// const _Text('Poor wandering ones!') |
| /// ``` |
| /// {@end-tool} |
| /// |
| /// {@tool snippet} |
| /// yet another const private constructor |
| /// ```dart |
| /// const _Text.__('Poor wandering ones!') |
| /// ``` |
| /// {@end-tool} |
| /// |
| /// {@tool snippet} |
| /// const variable |
| /// |
| /// ```dart |
| /// const Widget text0 = Text('Poor wandering ones!'); |
| /// ``` |
| /// {@end-tool} |
| /// |
| /// {@tool snippet} |
| /// more const variables |
| /// |
| /// ```dart |
| /// const text1 = _Text('Poor wandering ones!'); // error (always_specify_types) |
| /// ``` |
| /// {@end-tool} |
| /// |
| /// {@tool snippet} |
| /// Snippet with null-safe syntax |
| /// |
| /// ```dart |
| /// final String? bar = 'Hello'; // error (unnecessary_nullable_for_final_variable_declarations, prefer_const_declarations) |
| /// final int foo = null; // error (invalid_assignment, prefer_const_declarations) |
| /// ``` |
| /// {@end-tool} |
| /// |
| /// snippet with trailing comma |
| /// |
| /// ```dart |
| /// const SizedBox(), |
| /// ``` |
| /// |
| /// {@tool dartpad} |
| /// Dartpad with null-safe syntax |
| /// |
| /// ```dart |
| /// final GlobalKey globalKey = GlobalKey(); |
| /// ``` |
| /// |
| /// ```dart |
| /// // not continuing from previous example... |
| /// Widget build(BuildContext context) { |
| /// final String title; |
| /// return Opacity( |
| /// key: globalKey, // error (undefined_identifier, argument_type_not_assignable) |
| /// opacity: _visible ? 1.0 : 0.0, |
| /// child: Text(title), // error (read_potentially_unassigned_final) |
| /// ); |
| /// } |
| /// ``` |
| /// {@end-tool} |
| /// |
| /// ```csv |
| /// this,is,fine |
| /// ``` |
| /// |
| /// ```dart |
| /// import 'dart:io'; // error (unused_import) |
| /// final Widget p = Placeholder(); // error (undefined_class, undefined_function, avoid_dynamic_calls) |
| /// ``` |
| /// |
| /// ```dart |
| /// // (e.g. in a stateful widget) |
| /// void initState() { // error (must_call_super, annotate_overrides) |
| /// widget.toString(); // error (undefined_identifier, return_of_invalid_type) |
| /// } |
| /// ``` |
| /// |
| /// ```dart |
| /// // not in a stateful widget |
| /// void initState() { |
| /// widget.toString(); // error (undefined_identifier) |
| /// } |
| /// ``` |
| /// |
| /// ``` |
| /// error (something about backticks) |
| /// this must be the last error, since it aborts parsing of this file |
| /// ``` |