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1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 /** | 5 /** |
6 * A library for general helper code associated with the intl library | 6 * A library for general helper code associated with the intl library |
7 * rather than confined to specific parts of it. | 7 * rather than confined to specific parts of it. |
8 */ | 8 */ |
9 | 9 |
10 library intl_helpers; | 10 library intl_helpers; |
11 import '../date_symbols.dart'; | 11 import '../date_symbols.dart'; |
12 | 12 |
13 import 'dart:async'; | 13 import 'dart:async'; |
14 | 14 |
15 /** | 15 /** |
16 * This is used as a marker for a locale data map that hasn't been initialized, | 16 * This is used as a marker for a locale data map that hasn't been initialized, |
17 * and will throw an exception on any usage that isn't the fallback | 17 * and will throw an exception on any usage that isn't the fallback |
18 * patterns/symbols provided. | 18 * patterns/symbols provided. |
19 */ | 19 */ |
20 class UninitializedLocaleData<F> { | 20 class UninitializedLocaleData<F> { |
21 final String message; | 21 final String message; |
22 final F fallbackData; | 22 final F fallbackData; |
23 const UninitializedLocaleData(this.message, this.fallbackData); | 23 const UninitializedLocaleData(this.message, this.fallbackData); |
24 | 24 |
25 operator [](String key) => | 25 operator [](String key) => |
26 (key == 'en_US') ? fallbackData : _throwException(); | 26 (key == 'en_US') ? fallbackData : _throwException(); |
27 | 27 |
28 String lookupMessage(String message_str, [final String desc='', | 28 String lookupMessage(String message_str, [final String desc='', |
29 final Map examples=const {}, String locale, | 29 final Map examples=const {}, String locale, |
30 String name, List<String> args]) => _throwException(); | 30 String name, List<String> args]) => message_str; |
31 | 31 |
32 List get keys => _throwException(); | 32 List get keys => _throwException(); |
33 | 33 |
34 bool containsKey(String key) => (key == 'en_US') ? true : _throwException(); | 34 bool containsKey(String key) => (key == 'en_US') ? true : _throwException(); |
35 | 35 |
36 _throwException() { | 36 _throwException() { |
37 throw new LocaleDataException("Locale data has not been initialized" | 37 throw new LocaleDataException("Locale data has not been initialized" |
38 ", call $message."); | 38 ", call $message."); |
39 } | 39 } |
40 } | 40 } |
(...skipping 22 matching lines...) Expand all Loading... |
63 /** | 63 /** |
64 * Initialize the message lookup mechanism. This is for internal use only. | 64 * Initialize the message lookup mechanism. This is for internal use only. |
65 * User applications should import `message_lookup_by_library.dart` and call | 65 * User applications should import `message_lookup_by_library.dart` and call |
66 * `initializeMessages` | 66 * `initializeMessages` |
67 */ | 67 */ |
68 void initializeInternalMessageLookup(Function lookupFunction) { | 68 void initializeInternalMessageLookup(Function lookupFunction) { |
69 if (messageLookup is UninitializedLocaleData) { | 69 if (messageLookup is UninitializedLocaleData) { |
70 messageLookup = lookupFunction(); | 70 messageLookup = lookupFunction(); |
71 } | 71 } |
72 } | 72 } |
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