- Add a class index to the classes.

vm/class_table.cc

Index: vm/class_table.cc
===================================================================
--- vm/class_table.cc	(revision 0)
+++ vm/class_table.cc	(revision 0)
@@ -0,0 +1,72 @@
+// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+#include "vm/class_table.h"
+#include "vm/flags.h"
+#include "vm/object.h"
+#include "vm/raw_object.h"
+#include "vm/visitor.h"
+
+namespace dart {
+
+DEFINE_FLAG(bool, print_class_table, false, "Print initial class table.");
+
+ClassTable::ClassTable()
+    : top_(kNumPredefinedKinds), capacity_(initial_capacity_), table_(NULL) {
+  table_ = reinterpret_cast<RawClass**>(calloc(capacity_,
+                                               sizeof(RawClass*)));  // NOLINT
+  // Duplicate the class table from the VM isolate.
+  if (Dart::vm_isolate() != NULL) {
+    ClassTable* vm_class_table = Dart::vm_isolate()->class_table();
+    for (int i = kObject; i < kInstance; i++) {
+      table_[i] = vm_class_table->At(i);
+    }
+    table_[kNullClassIndex] = vm_class_table->At(kNullClassIndex);
+    table_[kDynamicClassIndex] = vm_class_table->At(kDynamicClassIndex);
+    table_[kVoidClassIndex] = vm_class_table->At(kVoidClassIndex);
+  }
+}
+
+
+ClassTable::~ClassTable() {
+  free(table_);
+}
+
+
+void ClassTable::Register(const Class& cls) {
+  intptr_t index = cls.index();
+  if (index != kIllegalObjectKind) {
+    ASSERT(index > 0);
+    ASSERT(index < kNumPredefinedKinds);
+    ASSERT(table_[index] == 0);
+    table_[index] = cls.raw();
+  } else {
+    cls.set_index(top_);
+    table_[top_] = cls.raw();
+    top_++;  // Increment next index.
+    ASSERT(top_ < capacity_);
+  }
+}
+
+
+void ClassTable::VisitObjectPointers(ObjectPointerVisitor* visitor) {
+  ASSERT(visitor != NULL);
+  visitor->VisitPointers(reinterpret_cast<RawObject**>(&table_[0]), top_);
+}
+
+
+void ClassTable::Print() {
+  Class& cls = Class::Handle();
+  String& name = String::Handle();
+
+  for (intptr_t i = 1; i < top_; i++) {
+    cls = At(i);
+    if (cls.raw() != reinterpret_cast<RawClass*>(0)) {
+      name = cls.Name();
+      OS::Print("%d: %s\n", i, name.ToCString());
+    }
+  }
+}
+
+}  // namespace dart