Refactoring of code generation for declarations, in preparation for modules.

src/scopes.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 394 matching lines @@
                          true,
                          Variable::NORMAL,
                          init_flag);
   var->AllocateTo(Variable::CONTEXT, index);
   return var;
 }
 
 
 Variable* Scope::LookupFunctionVar(Handle<String> name,
                                    AstNodeFactory<AstNullVisitor>* factory) {
-  if (function_ != NULL && function_->name().is_identical_to(name)) {
-    return function_->var();
+  if (function_ != NULL && function_->proxy()->name().is_identical_to(name)) {
+    return function_->proxy()->var();
   } else if (!scope_info_.is_null()) {
     // If we are backed by a scope info, try to lookup the variable there.
     VariableMode mode;
     int index = scope_info_->FunctionContextSlotIndex(*name, &mode);
     if (index < 0) return NULL;
-    Variable* var = DeclareFunctionVar(name, mode, factory);
+    Variable* var = new Variable(
+        this, name, mode, true /* is valid LHS */,
+        Variable::NORMAL, kCreatedInitialized);
+    VariableProxy* proxy = factory->NewVariableProxy(var);
+    VariableDeclaration* declaration =
+        factory->NewVariableDeclaration(proxy, mode, this);
+    DeclareFunctionVar(declaration);
     var->AllocateTo(Variable::CONTEXT, index);
     return var;
   } else {
     return NULL;
   }
 }
 
 
 Variable* Scope::Lookup(Handle<String> name) {
   for (Scope* scope = this;
@@ skipping 351 matching lines @@
       PrintName(params_[i]->name());
     }
     PrintF(")");
   }
 
   PrintF(" { // (%d, %d)\n", start_position(), end_position());
 
   // Function name, if any (named function literals, only).
   if (function_ != NULL) {
     Indent(n1, "// (local) function name: ");
-    PrintName(function_->name());
+    PrintName(function_->proxy()->name());
     PrintF("\n");
   }
 
   // Scope info.
   if (HasTrivialOuterContext()) {
     Indent(n1, "// scope has trivial outer context\n");
   }
   switch (language_mode()) {
     case CLASSIC_MODE:
       break;
@@ skipping 12 matching lines @@
   }
   if (inner_scope_calls_eval_) Indent(n1, "// inner scope calls 'eval'\n");
   if (num_stack_slots_ > 0) { Indent(n1, "// ");
   PrintF("%d stack slots\n", num_stack_slots_); }
   if (num_heap_slots_ > 0) { Indent(n1, "// ");
   PrintF("%d heap slots\n", num_heap_slots_); }
 
   // Print locals.
   Indent(n1, "// function var\n");
   if (function_ != NULL) {
-    PrintVar(n1, function_->var());
+    PrintVar(n1, function_->proxy()->var());
   }
 
   Indent(n1, "// temporary vars\n");
   for (int i = 0; i < temps_.length(); i++) {
     PrintVar(n1, temps_[i]);
   }
 
   Indent(n1, "// local vars\n");
   PrintMap(n1, &variables_);
 
@@ skipping 359 matching lines @@
        p = variables_.Next(p)) {
     Variable* var = reinterpret_cast<Variable*>(p->value);
     AllocateNonParameterLocal(var);
   }
 
   // For now, function_ must be allocated at the very end.  If it gets
   // allocated in the context, it must be the last slot in the context,
   // because of the current ScopeInfo implementation (see
   // ScopeInfo::ScopeInfo(FunctionScope* scope) constructor).
   if (function_ != NULL) {
-    AllocateNonParameterLocal(function_->var());
+    AllocateNonParameterLocal(function_->proxy()->var());
   }
 }
 
 
 void Scope::AllocateVariablesRecursively() {
   // Allocate variables for inner scopes.
   for (int i = 0; i < inner_scopes_.length(); i++) {
     inner_scopes_[i]->AllocateVariablesRecursively();
   }
 
@@ skipping 21 matching lines @@
     num_heap_slots_ = 0;
   }
 
   // Allocation done.
   ASSERT(num_heap_slots_ == 0 || num_heap_slots_ >= Context::MIN_CONTEXT_SLOTS);
 }
 
 
 int Scope::StackLocalCount() const {
   return num_stack_slots() -
-      (function_ != NULL && function_->var()->IsStackLocal() ? 1 : 0);
+      (function_ != NULL && function_->proxy()->var()->IsStackLocal() ? 1 : 0);
 }
 
 
 int Scope::ContextLocalCount() const {
   if (num_heap_slots() == 0) return 0;
   return num_heap_slots() - Context::MIN_CONTEXT_SLOTS -
-      (function_ != NULL && function_->var()->IsContextSlot() ? 1 : 0);
+      (function_ != NULL && function_->proxy()->var()->IsContextSlot() ? 1 : 0);
 }
 
 } }  // namespace v8::internal