Regexp caching

src/objects.h

 // Copyright 2006-2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1841 matching lines @@
   Object* LookupKey(HashTableKey* key, Object** s);
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(SymbolTable);
 };
 
 
 class CompilationCacheTable: public HashTable<0, 2> {
  public:
   // Find cached value for a string key, otherwise return null.
   Object* Lookup(String* src);
+  Object* LookupRegExp(String* source, int flags);

[Kasper Lund, 2008/10/24 06:42:50]

source -> src for consistency... or change src -> source.

   Object* Put(String* src, Object* value);
+  Object* PutRegExp(String* src, int flags, FixedArray* value);
 
   static inline CompilationCacheTable* cast(Object* obj);
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(CompilationCacheTable);
 };
 
 
 // MapCache.
 //
@@ skipping 1030 matching lines @@
   static const int kSize = kValueOffset + kPointerSize;
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(JSValue);
 };
 
 
 // Regular expressions
 class JSRegExp: public JSObject {
  public:
-  enum Type { JSCRE, ATOM };
+  enum Type { NOT_COMPILED, JSCRE, ATOM };
+  enum Flag { NONE = 0, GLOBAL = 1, IGNORE_CASE = 2, MULTILINE = 4 };
 
-  inline Type type_tag();
-  inline void set_type_tag(Type value);
+  DECL_ACCESSORS(data, Object)
 
-  DECL_ACCESSORS(type, Object)
-  DECL_ACCESSORS(data, Object)
+  inline Type TypeTag();
+  inline Object* DataAt(int index);
 
   static inline JSRegExp* cast(Object* obj);
 
   // Dispatched behavior.
 #ifdef DEBUG
   void JSRegExpPrint();
   void JSRegExpVerify();
 #endif
 
-  static const int kTypeOffset = JSObject::kHeaderSize;
-  static const int kDataOffset = kTypeOffset + kIntSize;
+  static const int kDataOffset = JSObject::kHeaderSize;
   static const int kSize = kDataOffset + kIntSize;
+
+  static const int kTagIndex = 0;
+  static const int kSourceIndex = kTagIndex + 1;
+  static const int kFlagsIndex = kSourceIndex + 1;
+  // These two are the same since the same entry is shared for
+  // different purposes in different types of regexps.
+  static const int kAtomPatternIndex = kFlagsIndex + 1;
+  static const int kJscreDataIndex = kFlagsIndex + 1;
+  static const int kDataSize = kAtomPatternIndex + 1;
 };
 
 
 enum AllowNullsFlag {ALLOW_NULLS, DISALLOW_NULLS};
 enum RobustnessFlag {ROBUST_STRING_TRAVERSAL, FAST_STRING_TRAVERSAL};
 
 
 class StringHasher {
  public:
   inline StringHasher(int length);
@@ skipping 1152 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_