Port and integrate the irregexp engine from V8

runtime/vm/regexp_parser.h

 // Copyright (c) 2014, 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.
 
 #ifndef VM_REGEXP_PARSER_H_
 #define VM_REGEXP_PARSER_H_
 
 #include "vm/allocation.h"
 #include "vm/growable_array.h"
 #include "vm/regexp_ast.h"
@@ skipping 36 matching lines @@
 #define LAST(x)
 #endif
 };
 
 class RegExpParser : public ValueObject {
  public:
   RegExpParser(const String& in,
                String* error,
                bool multiline_mode);
 
+  static bool ParseFunction(ParsedFunction* parsed_function);
+
   static bool ParseRegExp(const String& input,
                           bool multiline,
                           RegExpCompileData* result);
 
   RegExpTree* ParsePattern();
   RegExpTree* ParseDisjunction();
   RegExpTree* ParseGroup();
   RegExpTree* ParseCharacterClass();
 
   // Parses a {...,...} quantifier and stores the range in the given
@@ skipping 98 matching lines @@
   bool multiline_;
   bool simple_;
   bool contains_anchor_;
   bool is_scanned_for_captures_;
   bool failed_;
 };
 
 }  // namespace dart
 
 #endif  // VM_REGEXP_PARSER_H_