[destructuring] Re-index materialized literals in arrow function parameters.

src/ast.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_AST_H_
 #define V8_AST_H_
 
 #include "src/v8.h"
 
 #include "src/assembler.h"
@@ skipping 1280 matching lines @@
       : Expression(zone, position), value_(value) {}
   static int parent_num_ids() { return Expression::num_ids(); }
 
  private:
   int local_id(int n) const { return base_id() + parent_num_ids() + n; }
 
   const AstValue* value_;
 };
 
 
+class AstLiteralReindexer;
+
 // Base class for literals that needs space in the corresponding JSFunction.
 class MaterializedLiteral : public Expression {
  public:
   virtual MaterializedLiteral* AsMaterializedLiteral() { return this; }
 
   int literal_index() { return literal_index_; }
 
   int depth() const {
     // only callable after initialization.
     DCHECK(depth_ >= 1);
@@ skipping 31 matching lines @@
   // compile time value as encoded by CompileTimeValue::GetValue().
   // Otherwise, return undefined literal as the placeholder
   // in the object literal boilerplate.
   Handle<Object> GetBoilerplateValue(Expression* expression, Isolate* isolate);
 
  private:
   int literal_index_;
   bool is_simple_;
   bool is_strong_;
   int depth_;
+
+  friend class AstLiteralReindexer;
 };
 
 
 // Property is used for passing information
 // about an object literal's properties from the parser
 // to the code generator.
 class ObjectLiteralProperty final : public ZoneObject {
  public:
   enum Kind {
     CONSTANT,              // Property with constant value (compile time).
@@ skipping 2240 matching lines @@
 
  private:
   Zone* zone_;
   AstValueFactory* ast_value_factory_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_AST_H_