Move sloppy block function hoisting logic from Parser to Scope.

src/ast/variables.h

 // Copyright 2011 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_AST_VARIABLES_H_
 #define V8_AST_VARIABLES_H_
 
 #include "src/ast/ast-value-factory.h"
 #include "src/zone.h"
 
@@ skipping 103 matching lines @@
   int index() const { return index_; }
 
   void AllocateTo(VariableLocation location, int index) {
     DCHECK(IsUnallocated() ||
            (this->location() == location && this->index() == index));
     bit_field_ = LocationField::update(bit_field_, location);
     DCHECK_EQ(location, this->location());
     index_ = index;
   }
 
+  static InitializationFlag DefaultInitializationFlag(VariableMode mode) {
+    DCHECK(IsDeclaredVariableMode(mode));
+    return mode == VAR ? kCreatedInitialized : kNeedsInitialization;
+  }
+
  private:
   Scope* scope_;
   const AstRawString* name_;
 
   // If this field is set, this variable references the stored locally bound
   // variable, but it might be shadowed by variable bindings introduced by
   // sloppy 'eval' calls between the reference scope (inclusive) and the
   // binding scope (exclusive).
   Variable* local_if_not_shadowed_;
   int index_;
@@ skipping 11 matching lines @@
   class InitializationFlagField
       : public BitField16<InitializationFlag, IsUsedField::kNext, 2> {};
   class MaybeAssignedFlagField
       : public BitField16<MaybeAssignedFlag, InitializationFlagField::kNext,
                           2> {};
 };
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_AST_VARIABLES_H_