Port and integrate the irregexp engine from V8

runtime/vm/raw_object.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_RAW_OBJECT_H_
 #define VM_RAW_OBJECT_H_
 
 #include "platform/assert.h"
 #include "vm/globals.h"
 #include "vm/token.h"
@@ skipping 607 matching lines @@
     kGetterFunction,     // represents getter functions e.g: get foo() { .. }.
     kSetterFunction,     // represents setter functions e.g: set foo(..) { .. }.
     kConstructor,
     kImplicitGetter,     // represents an implicit getter for fields.
     kImplicitSetter,     // represents an implicit setter for fields.
     kImplicitStaticFinalGetter,  // represents an implicit getter for static
                                  // final fields (incl. static const fields).
     kMethodExtractor,  // converts method into implicit closure on the receiver.
     kNoSuchMethodDispatcher,  // invokes noSuchMethod.
     kInvokeFieldDispatcher,  // invokes a field as a closure.
+    kIrregexpFunction,   // represents a generated irregexp matcher function.
   };
 
   enum AsyncModifier {
     kNoModifier,
     kAsync,
   };
 
  private:
   // So that the MarkingVisitor::DetachCode can null out the code fields.
   friend class MarkingVisitor;
@@ skipping 1072 matching lines @@
 // VM type for capturing JS regular expressions.
 class RawJSRegExp : public RawInstance {
   RAW_HEAP_OBJECT_IMPLEMENTATION(JSRegExp);
 
   RawObject** from() {
     return reinterpret_cast<RawObject**>(&ptr()->data_length_);
   }
   RawSmi* data_length_;
   RawSmi* num_bracket_expressions_;
   RawString* pattern_;  // Pattern to be used for matching.
+  RawFunction* one_byte_function_;
+  RawFunction* two_byte_function_;
   RawObject** to() {
-    return reinterpret_cast<RawObject**>(&ptr()->pattern_);
+    return reinterpret_cast<RawObject**>(&ptr()->two_byte_function_);
   }
 
   intptr_t type_;  // Uninitialized, simple or complex.
   intptr_t flags_;  // Represents global/local, case insensitive, multiline.
 
   // Variable length data follows here.
   uint8_t* data() { OPEN_ARRAY_START(uint8_t, uint8_t); }
 };
 
 
@@ skipping 265 matching lines @@
   COMPILE_ASSERT(kExternalTypedDataInt8ArrayCid ==
                  kTypedDataInt8ArrayViewCid + 15);
   COMPILE_ASSERT(kByteBufferCid == kExternalTypedDataInt8ArrayCid + 14);
   COMPILE_ASSERT(kNullCid == kByteBufferCid + 1);
   return (kNullCid - kTypedDataInt8ArrayCid);
 }
 
 }  // namespace dart
 
 #endif  // VM_RAW_OBJECT_H_