Put Scopes into temporary Zone

src/ast/ast.cc

 // 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.
 
 #include "src/ast/ast.h"
 
 #include <cmath>  // For isfinite.
 
 #include "src/ast/prettyprinter.h"
 #include "src/ast/scopes.h"
@@ skipping 186 matching lines @@
                              Variable::Kind variable_kind, int start_position,
                              int end_position)
     : Expression(zone, start_position, kVariableProxy),
       bit_field_(IsThisField::encode(variable_kind == Variable::THIS) |
                  IsAssignedField::encode(false) |
                  IsResolvedField::encode(false)),
       end_position_(end_position),
       raw_name_(name),
       next_unresolved_(nullptr) {}
 
+VariableProxy::VariableProxy(Zone* zone, const VariableProxy* copy_from)
+    : Expression(zone, copy_from->position(), kVariableProxy),
+      bit_field_(copy_from->bit_field_),
+      end_position_(copy_from->end_position_),
+      next_unresolved_(nullptr) {
+  if (copy_from->is_resolved()) {
+    var_ = copy_from->var_;
+  } else {
+    raw_name_ = copy_from->raw_name_;
+  }
+}
+
 void VariableProxy::BindTo(Variable* var) {
   DCHECK((is_this() && var->is_this()) || raw_name() == var->raw_name());
   set_var(var);
   set_is_resolved();
   var->set_is_used();
 }
 
 
 void VariableProxy::AssignFeedbackVectorSlots(Isolate* isolate,
                                               FeedbackVectorSpec* spec,
@@ skipping 730 matching lines @@
 bool Literal::Match(void* literal1, void* literal2) {
   const AstValue* x = static_cast<Literal*>(literal1)->raw_value();
   const AstValue* y = static_cast<Literal*>(literal2)->raw_value();
   return (x->IsString() && y->IsString() && x->AsString() == y->AsString()) ||
          (x->IsNumber() && y->IsNumber() && x->AsNumber() == y->AsNumber());
 }
 
 
 }  // namespace internal
 }  // namespace v8