Implement handling of arrow functions in the parser

src/runtime.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_RUNTIME_H_
 #define V8_RUNTIME_H_
 
 #include "allocation.h"
 #include "zone.h"
 
@@ skipping 167 matching lines @@
 #define RUNTIME_FUNCTION_LIST_ALWAYS_2(F) \
   /* Reflection */ \
   F(FunctionSetInstanceClassName, 2, 1) \
   F(FunctionSetLength, 2, 1) \
   F(FunctionSetPrototype, 2, 1) \
   F(FunctionGetName, 1, 1) \
   F(FunctionSetName, 2, 1) \
   F(FunctionNameShouldPrintAsAnonymous, 1, 1) \
   F(FunctionMarkNameShouldPrintAsAnonymous, 1, 1) \
   F(FunctionIsGenerator, 1, 1) \
+  F(FunctionIsArrow, 1, 1) \
   F(FunctionBindArguments, 4, 1) \
   F(BoundFunctionGetBindings, 1, 1) \
   F(FunctionRemovePrototype, 1, 1) \
   F(FunctionGetSourceCode, 1, 1) \
   F(FunctionGetScript, 1, 1) \
   F(FunctionGetScriptSourcePosition, 1, 1) \
   F(FunctionGetPositionForOffset, 2, 1) \
   F(FunctionIsAPIFunction, 1, 1) \
   F(FunctionIsBuiltin, 1, 1) \
   F(GetScript, 1, 1) \
@@ skipping 691 matching lines @@
 class AllocateDoubleAlignFlag:  public BitField<bool,            0, 1> {};
 class AllocateTargetSpace:      public BitField<AllocationSpace, 1, 3> {};
 
 class DeclareGlobalsEvalFlag:   public BitField<bool,       0, 1> {};
 class DeclareGlobalsNativeFlag: public BitField<bool,       1, 1> {};
 class DeclareGlobalsStrictMode: public BitField<StrictMode, 2, 1> {};
 
 } }  // namespace v8::internal
 
 #endif  // V8_RUNTIME_H_