Port and integrate the irregexp engine from V8

runtime/vm/symbols.h

 // 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.
 
 #ifndef VM_SYMBOLS_H_
 #define VM_SYMBOLS_H_
 
 #include "vm/object.h"
 #include "vm/snapshot_ids.h"
 
 namespace dart {
 
 // Forward declarations.
 class Isolate;
 class ObjectPointerVisitor;
 
 // One-character symbols are added implicitly.
 #define PREDEFINED_SYMBOLS_LIST(V)                                             \
   V(Empty, "")                                                                 \
   V(EqualOperator, "==")                                                       \
+  V(GreaterEqualOperator, ">=")                                                \
+  V(LessEqualOperator, "<=")                                                   \
+  V(UnaryMinus, "unary-")                                                      \
   V(Identical, "identical")                                                    \
   V(Length, "length")                                                          \
   V(IndexToken, "[]")                                                          \
   V(AssignIndexToken, "[]=")                                                   \
   V(TopLevel, "::")                                                            \
   V(DefaultLabel, ":L")                                                        \
   V(This, "this")                                                              \
   V(Other, "other")                                                            \
   V(Super, "super")                                                            \
   V(Call, "call")                                                              \
@@ skipping 287 matching lines @@
   V(_leftShiftWithMask32, "_leftShiftWithMask32")                              \
   V(OptimizedOut, "<optimized out>")                                           \
   V(NotInitialized, "<not initialized>")                                       \
   V(AllocationStubFor, "Allocation stub for ")                                 \
   V(TempParam, ":temp_param")                                                  \
   V(_UserTag, "_UserTag")                                                      \
   V(Default, "Default")                                                        \
   V(StubPrefix, "[Stub] ")                                                     \
   V(ClassID, "ClassID")                                                        \
   V(DartIsVM, "dart.isVM")                                                     \
+  V(stack_, "stack_")                                                          \
+  V(current_character_, "current_character_")                                  \
+  V(current_position_, "current_position_")                                    \
+  V(string_param_length_, "string_param_length_")                              \
+  V(capture_length_, "capture_length_")                                        \
+  V(word_character_map_, "word_character_map_")                                \
+  V(match_start_index_, "match_start_index_")                                  \
+  V(capture_start_index_, "capture_start_index_")                              \
+  V(match_end_index_, "match_end_index_")                                      \
+  V(char_in_capture_, "char_in_capture_")                                      \
+  V(char_in_match_, "char_in_match_")                                          \
+  V(result_, "result_")                                                        \
+  V(position_registers_, "position_registers_")                                \
+  V(string_param_, "string_param_")                                            \
+  V(start_index_param_, "start_index_param_")                                  \
+  V(clear, "clear")                                                            \
+  V(_wordCharacterMap, "_wordCharacterMap")                                    \
+  V(print, "print")                                                            \
+  V(last, "last")                                                              \
+  V(removeLast, "removeLast")                                                  \
+  V(add, "add")                                                                \
+  V(_oneCodeUnitAt, "_oneCodeUnitAt")                                          \
+  V(_twoCodeUnitsAt, "_twoCodeUnitsAt")                                        \
+  V(_fourCodeUnitsAt, "_fourCodeUnitsAt")                                      \
 
 
 // Contains a list of frequently used strings in a canonicalized form. This
 // list is kept in the vm_isolate in order to share the copy across isolates
 // without having to maintain copies in each isolate.
 class Symbols : public AllStatic {
  public:
   enum { kMaxOneCharCodeSymbol = 0xFF };
 
   // List of strings that are pre created in the vm isolate.
@@ skipping 23 matching lines @@
   // Offset of Null character which is the predefined character symbol.
   static const int kNullCharCodeSymbolOffset = 0;
 
   // Access methods for one byte character symbols stored in the vm isolate.
   static const String& Dot() {
     return *(symbol_handles_[kNullCharId + '.']);
   }
   static const String& Equals() {
     return *(symbol_handles_[kNullCharId + '=']);
   }
+  static const String& Plus() {
+    return *(symbol_handles_[kNullCharId + '+']);
+  }
+  static const String& Minus() {
+    return *(symbol_handles_[kNullCharId + '-']);
+  }
+  static const String& BitOr() {
+    return *(symbol_handles_[kNullCharId + '|']);
+  }
+  static const String& BitAnd() {
+    return *(symbol_handles_[kNullCharId + '&']);
+  }
   static const String& LAngleBracket() {
     return *(symbol_handles_[kNullCharId + '<']);
   }
   static const String& RAngleBracket() {
     return *(symbol_handles_[kNullCharId + '>']);
   }
   static const String& LParen() {
     return *(symbol_handles_[kNullCharId + '(']);
   }
   static const String& RParen() {
@@ skipping 133 matching lines @@
   friend class SnapshotReader;
   friend class SnapshotWriter;
   friend class ApiMessageReader;
 
   DISALLOW_COPY_AND_ASSIGN(Symbols);
 };
 
 }  // namespace dart
 
 #endif  // VM_SYMBOLS_H_