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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 patch class String { | 5 patch class String { |
6 /* patch */ factory String.fromCharCodes(Iterable<int> charCodes) { | 6 /* patch */ factory String.fromCharCodes(Iterable<int> charCodes) { |
7 return _StringBase.createFromCharCodes(charCodes); | 7 return _StringBase.createFromCharCodes(charCodes); |
8 } | 8 } |
9 | 9 |
10 /* patch */ const factory String.fromEnvironment(String name, | 10 /* patch */ const factory String.fromEnvironment(String name, |
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771 } else { | 771 } else { |
772 for (int i = 0; i < delta; i++) { | 772 for (int i = 0; i < delta; i++) { |
773 for (int j = 0; j < padLength; j++) { | 773 for (int j = 0; j < padLength; j++) { |
774 result._setAt(index++, padding.codeUnitAt(j)); | 774 result._setAt(index++, padding.codeUnitAt(j)); |
775 } | 775 } |
776 } | 776 } |
777 } | 777 } |
778 return result; | 778 return result; |
779 } | 779 } |
780 | 780 |
| 781 // Lower-case conversion table for Latin-1. |
| 782 static const _LC_TABLE = const [ |
| 783 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, |
| 784 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, |
| 785 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, |
| 786 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, |
| 787 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, |
| 788 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, |
| 789 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, |
| 790 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, |
| 791 0x40, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, |
| 792 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, |
| 793 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, |
| 794 0x78, 0x79, 0x7a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, |
| 795 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, |
| 796 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, |
| 797 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, |
| 798 0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, |
| 799 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, |
| 800 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, |
| 801 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, |
| 802 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, |
| 803 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, |
| 804 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, |
| 805 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, |
| 806 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, |
| 807 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, |
| 808 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, |
| 809 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xd7, |
| 810 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xdf, |
| 811 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, |
| 812 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, |
| 813 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, |
| 814 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff, |
| 815 ]; |
| 816 |
| 817 String _toLowerCaseUpperCaseDetectedAt(int firstUpperCaseIndex) { |
| 818 // String contains upper case characters. Create a new string. |
| 819 final length = this.length; |
| 820 final result = _allocate(length); |
| 821 // First up to firstUpperIndex. |
| 822 int i = 0; |
| 823 for (; i < firstUpperCaseIndex; i++) { |
| 824 result._setAt(i, this.codeUnitAt(i)); |
| 825 } |
| 826 for (; i < length; i++) { |
| 827 result._setAt(i, _LC_TABLE[this.codeUnitAt(i)]); |
| 828 } |
| 829 return result; |
| 830 } |
| 831 |
| 832 String toLowerCase() { |
| 833 for (int i = 0; i < this.length; i++) { |
| 834 final c = this.codeUnitAt(i); |
| 835 // Ranges: 0x41-0x5a ('A' - 'Z'), 0xc0-0xd6, 0xd8-0xde. |
| 836 if (c != _LC_TABLE[c]) { |
| 837 return _toLowerCaseUpperCaseDetectedAt(i); |
| 838 } |
| 839 } |
| 840 return this; |
| 841 } |
| 842 |
781 // Allocates a string of given length, expecting its content to be | 843 // Allocates a string of given length, expecting its content to be |
782 // set using _setAt. | 844 // set using _setAt. |
783 static _OneByteString _allocate(int length) native "OneByteString_allocate"; | 845 static _OneByteString _allocate(int length) native "OneByteString_allocate"; |
784 | 846 |
785 | 847 |
786 static _OneByteString _allocateFromOneByteList(List<int> list) | 848 static _OneByteString _allocateFromOneByteList(List<int> list) |
787 native "OneByteString_allocateFromOneByteList"; | 849 native "OneByteString_allocateFromOneByteList"; |
788 | 850 |
789 // This is internal helper method. Code point value must be a valid | 851 // This is internal helper method. Code point value must be a valid |
790 // Latin1 value (0..0xFF), index must be valid. | 852 // Latin1 value (0..0xFF), index must be valid. |
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881 class _CodeUnits extends Object with ListMixin<int>, | 943 class _CodeUnits extends Object with ListMixin<int>, |
882 UnmodifiableListMixin<int> { | 944 UnmodifiableListMixin<int> { |
883 /** The string that this is the code units of. */ | 945 /** The string that this is the code units of. */ |
884 String _string; | 946 String _string; |
885 | 947 |
886 _CodeUnits(this._string); | 948 _CodeUnits(this._string); |
887 | 949 |
888 int get length => _string.length; | 950 int get length => _string.length; |
889 int operator[](int i) => _string.codeUnitAt(i); | 951 int operator[](int i) => _string.codeUnitAt(i); |
890 } | 952 } |
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