Index: runtime/lib/string_patch.dart |
diff --git a/runtime/lib/string_patch.dart b/runtime/lib/string_patch.dart |
index 667a08772516cf18f3c5b8f8886ceddcd538fa33..717e49db71984f56878bbfcf0cde617c7efb3be5 100644 |
--- a/runtime/lib/string_patch.dart |
+++ b/runtime/lib/string_patch.dart |
@@ -778,6 +778,68 @@ class _OneByteString extends _StringBase implements String { |
return result; |
} |
+ // Lower-case conversion table for Latin-1. |
+ static const _LC_TABLE = const [ |
+ 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, |
+ 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, |
+ 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, |
+ 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, |
+ 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, |
+ 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, |
+ 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, |
+ 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, |
+ 0x40, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, |
+ 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, |
+ 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, |
+ 0x78, 0x79, 0x7a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, |
+ 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, |
+ 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, |
+ 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, |
+ 0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, |
+ 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, |
+ 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, |
+ 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, |
+ 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, |
+ 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, |
+ 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, |
+ 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, |
+ 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, |
+ 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, |
+ 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, |
+ 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xd7, |
+ 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xdf, |
+ 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, |
+ 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, |
+ 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, |
+ 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff, |
+ ]; |
+ |
+ String _toLowerCaseUpperCaseDetectedAt(int firstUpperCaseIndex) { |
+ // String contains upper case characters. Create a new string. |
+ final length = this.length; |
+ final result = _allocate(length); |
+ // First up to firstUpperIndex. |
+ int i = 0; |
+ for (; i < firstUpperCaseIndex; i++) { |
+ result._setAt(i, this.codeUnitAt(i)); |
+ } |
+ for (; i < length; i++) { |
+ result._setAt(i, _LC_TABLE[this.codeUnitAt(i)]); |
+ } |
+ return result; |
+ } |
+ |
+ String toLowerCase() { |
+ for (int i = 0; i < this.length; i++) { |
+ final c = this.codeUnitAt(i); |
+ // Ranges: 0x41-0x5a ('A' - 'Z'), 0xc0-0xd6, 0xd8-0xde. |
+ if (c != _LC_TABLE[c]) { |
+ return _toLowerCaseUpperCaseDetectedAt(i); |
+ } |
+ } |
+ return this; |
+ } |
+ |
// Allocates a string of given length, expecting its content to be |
// set using _setAt. |
static _OneByteString _allocate(int length) native "OneByteString_allocate"; |