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runtime/lib/regexp_patch.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-@patch class RegExp {
-  @patch factory RegExp(String source,
-                              {bool multiLine: false,
-                               bool caseSensitive: true}) {
-    _RegExpHashKey key = new _RegExpHashKey(
-        source, multiLine, caseSensitive);
+@patch
+class RegExp {
+  @patch
+  factory RegExp(String source,
+      {bool multiLine: false, bool caseSensitive: true}) {
+    _RegExpHashKey key = new _RegExpHashKey(source, multiLine, caseSensitive);
     _RegExpHashValue value = _cache[key];
 
     if (value == null) {
       if (_cache.length > _MAX_CACHE_SIZE) {
         _RegExpHashKey lastKey = _recentlyUsed.last;
         lastKey.unlink();
         _cache.remove(lastKey);
       }
 
       value = new _RegExpHashValue(
           new _RegExp(source,
-                              multiLine: multiLine,
-                              caseSensitive: caseSensitive),
+              multiLine: multiLine, caseSensitive: caseSensitive),
           key);
       _cache[key] = value;
     } else {
       value.key.unlink();
     }
 
     assert(value != null);
 
     _recentlyUsed.addFirst(value.key);
     assert(_recentlyUsed.length == _cache.length);
@@ skipping 10 matching lines @@
   // may not be removed from the cache.
   // TODO(zerny): Use self-sizing cache similar to _AccessorCache in
   // mirrors_impl.dart.
   static const int _MAX_CACHE_SIZE = 256;
   static final Map<_RegExpHashKey, _RegExpHashValue> _cache =
       new HashMap<_RegExpHashKey, _RegExpHashValue>();
   static final LinkedList<_RegExpHashKey> _recentlyUsed =
       new LinkedList<_RegExpHashKey>();
 }
 
-
 // Represents both a key in the regular expression cache as well as its
 // corresponding entry in the LRU list.
 class _RegExpHashKey extends LinkedListEntry<_RegExpHashKey> {
   final String pattern;
   final bool multiLine;
   final bool caseSensitive;
 
   _RegExpHashKey(this.pattern, this.multiLine, this.caseSensitive);
 
   int get hashCode => pattern.hashCode;
-  bool operator==(_RegExpHashKey that) {
+  bool operator ==(_RegExpHashKey that) {
     return (this.pattern == that.pattern) &&
-           (this.multiLine == that.multiLine) &&
-           (this.caseSensitive == that.caseSensitive);
+        (this.multiLine == that.multiLine) &&
+        (this.caseSensitive == that.caseSensitive);
   }
 }
 
-
 // Represents a value in the regular expression cache. Contains a pointer
 // back to the key in order to access the corresponding LRU entry.
 class _RegExpHashValue {
   final _RegExp regexp;
   final _RegExpHashKey key;
 
   _RegExpHashValue(this.regexp, this.key);
 }
 
-
 class _RegExpMatch implements Match {
   _RegExpMatch(this._regexp, this.input, this._match);
 
   int get start => _start(0);
   int get end => _end(0);
 
   int _start(int groupIdx) {
     return _match[(groupIdx * _MATCH_PAIR)];
   }
 
@@ skipping 29 matching lines @@
   int get groupCount => _regexp._groupCount;
 
   Pattern get pattern => _regexp;
 
   final RegExp _regexp;
   final String input;
   final List<int> _match;
   static const int _MATCH_PAIR = 2;
 }
 
-
 class _RegExp implements RegExp {
-  factory _RegExp(
-      String pattern,
+  factory _RegExp(String pattern,
       {bool multiLine: false,
-       bool caseSensitive: true}) native "RegExp_factory";
+      bool caseSensitive: true}) native "RegExp_factory";
 
   Match firstMatch(String str) {
     if (str is! String) throw new ArgumentError(str);
     List match = _ExecuteMatch(str, 0);
     if (match == null) {
       return null;
     }
     return new _RegExpMatch(this, str, match);
   }
 
@@ skipping 44 matching lines @@
   // character (digit, letter or underscore) and 0x00 otherwise.
   // Used by generated RegExp code.
   static const List<int> _wordCharacterMap = const <int>[
     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 
     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,  // '0' - '7'
-    0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // '8' - '9'
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, // '0' - '7'
+    0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // '8' - '9'
 
-    0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,  // 'A' - 'G'
-    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,  // 'H' - 'O'
-    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,  // 'P' - 'W'
-    0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff,  // 'X' - 'Z', '_'
+    0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, // 'A' - 'G'
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, // 'H' - 'O'
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, // 'P' - 'W'
+    0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, // 'X' - 'Z', '_'
 
-    0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,  // 'a' - 'g'
-    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,  // 'h' - 'o'
-    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,  // 'p' - 'w'
-    0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00,  // 'x' - 'z'
+    0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, // 'a' - 'g'
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, // 'h' - 'o'
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, // 'p' - 'w'
+    0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, // 'x' - 'z'
     // Latin-1 range
     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 
     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 
     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 
     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   ];
 
-  List _ExecuteMatch(String str, int start_index)
-      native "RegExp_ExecuteMatch";
+  List _ExecuteMatch(String str, int start_index) native "RegExp_ExecuteMatch";
 
   List _ExecuteMatchSticky(String str, int start_index)
       native "RegExp_ExecuteMatchSticky";
 }
 
 class _AllMatchesIterable extends IterableBase<Match> {
   final _RegExp _re;
   final String _str;
   final int _start;
 
   _AllMatchesIterable(this._re, this._str, this._start);
 
   Iterator<Match> get iterator => new _AllMatchesIterator(_re, _str, _start);
 }
 
 class _AllMatchesIterator implements Iterator<Match> {
   final String _str;
   int _nextIndex;
   _RegExp _re;
   Match _current;
 
   _AllMatchesIterator(this._re, this._str, this._nextIndex);
 
   Match get current => _current;
 
   bool moveNext() {
-    if (_re == null) return false;  // Cleared after a failed match.
+    if (_re == null) return false; // Cleared after a failed match.
     if (_nextIndex <= _str.length) {
       var match = _re._ExecuteMatch(_str, _nextIndex);
       if (match != null) {
         _current = new _RegExpMatch(_re, _str, match);
         _nextIndex = _current.end;
         if (_nextIndex == _current.start) {
           // Zero-width match. Advance by one more.
           _nextIndex++;
         }
         return true;
       }
     }
     _current = null;
     _re = null;
     return false;
   }
 }