Remove CONST_LEGACY VariableMode

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"
 
 namespace v8 {
 namespace internal {
 
 // The AST refers to variables via VariableProxies - placeholders for the actual
 // variables. Variables themselves are never directly referred to from the AST,
 // they are maintained by scopes, and referred to from VariableProxies and Slots
 // after binding and variable allocation.
 class Variable: public ZoneObject {
  public:
-  enum Kind { NORMAL, FUNCTION, THIS, ARGUMENTS };
+  enum Kind { NORMAL, FUNCTION, THIS, ARGUMENTS, SLOPPY_FUNCTION_NAME };
 
   Variable(Scope* scope, const AstRawString* name, VariableMode mode, Kind kind,
            InitializationFlag initialization_flag,
            MaybeAssignedFlag maybe_assigned_flag = kNotAssigned);
 
   virtual ~Variable() {}
 
   // Printing support
   static const char* Mode2String(VariableMode mode);
 
@@ skipping 33 matching lines @@
   bool IsContextSlot() const { return location_ == VariableLocation::CONTEXT; }
   bool IsGlobalSlot() const { return location_ == VariableLocation::GLOBAL; }
   bool IsUnallocatedOrGlobalSlot() const {
     return IsUnallocated() || IsGlobalSlot();
   }
   bool IsLookupSlot() const { return location_ == VariableLocation::LOOKUP; }
   bool IsGlobalObjectProperty() const;
   bool IsStaticGlobalObjectProperty() const;
 
   bool is_dynamic() const { return IsDynamicVariableMode(mode_); }
-  bool is_const_mode() const { return IsImmutableVariableMode(mode_); }
   bool binding_needs_init() const {
     return initialization_flag_ == kNeedsInitialization;
   }
+  bool throw_on_const_assignment(LanguageMode language_mode) const {
+    return kind_ != SLOPPY_FUNCTION_NAME || is_strict(language_mode);
+  }
 
   bool is_function() const { return kind_ == FUNCTION; }
   bool is_this() const { return kind_ == THIS; }
   bool is_arguments() const { return kind_ == ARGUMENTS; }
 
   // For script scopes, the "this" binding is provided by a ScriptContext added
   // to the global's ScriptContextTable.  This binding might not statically
   // resolve to a Variable::THIS binding, instead being DYNAMIC_LOCAL.  However
   // any variable named "this" does indeed refer to a Variable::THIS binding;
   // the grammar ensures this to be the case.  So wherever a "this" binding
@@ skipping 73 matching lines @@
   // Usage info.
   bool force_context_allocation_;  // set by variable resolver
   bool is_used_;
   InitializationFlag initialization_flag_;
   MaybeAssignedFlag maybe_assigned_;
 };
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_AST_VARIABLES_H_