VM: Re-format to use at most one newline between functions

runtime/vm/cha.cc

 // 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/cha.h"
 #include "vm/class_table.h"
 #include "vm/flags.h"
 #include "vm/freelist.h"
 #include "vm/object.h"
 #include "vm/raw_object.h"
 #include "vm/visitor.h"
 
 namespace dart {
 
 void CHA::AddToGuardedClasses(const Class& cls, intptr_t subclass_count) {
   for (intptr_t i = 0; i < guarded_classes_.length(); i++) {
     if (guarded_classes_[i].cls->raw() == cls.raw()) {
       return;
     }
   }
   GuardedClassInfo info = {&Class::ZoneHandle(thread_->zone(), cls.raw()),
                            subclass_count};
   guarded_classes_.Add(info);
   return;
 }
 
-
 bool CHA::IsGuardedClass(intptr_t cid) const {
   for (intptr_t i = 0; i < guarded_classes_.length(); ++i) {
     if (guarded_classes_[i].cls->id() == cid) return true;
   }
   return false;
 }
 
-
 bool CHA::HasSubclasses(const Class& cls) {
   ASSERT(!cls.IsNull());
   ASSERT(cls.id() >= kInstanceCid);
   // Can't track dependencies for classes on the VM heap since those are
   // read-only.
   // TODO(fschneider): Enable tracking of CHA dependent code for VM heap
   // classes.
   if (cls.InVMHeap()) return true;
 
   if (cls.IsObjectClass()) {
     // Class Object has subclasses, although we do not keep track of them.
     return true;
   }
   const GrowableObjectArray& direct_subclasses =
       GrowableObjectArray::Handle(cls.direct_subclasses());
   return !direct_subclasses.IsNull() && (direct_subclasses.Length() > 0);
 }
 
-
 bool CHA::HasSubclasses(intptr_t cid) const {
   const ClassTable& class_table = *thread_->isolate()->class_table();
   Class& cls = Class::Handle(thread_->zone(), class_table.At(cid));
   return HasSubclasses(cls);
 }
 
-
 bool CHA::ConcreteSubclasses(const Class& cls,
                              GrowableArray<intptr_t>* class_ids) {
   if (cls.InVMHeap()) return false;
   if (cls.IsObjectClass()) return false;
 
   if (!cls.is_abstract()) {
     class_ids->Add(cls.id());
   }
 
   const GrowableObjectArray& direct_subclasses =
       GrowableObjectArray::Handle(cls.direct_subclasses());
   if (direct_subclasses.IsNull()) {
     return true;
   }
   Class& subclass = Class::Handle();
   for (intptr_t i = 0; i < direct_subclasses.Length(); i++) {
     subclass ^= direct_subclasses.At(i);
     if (!ConcreteSubclasses(subclass, class_ids)) {
       return false;
     }
   }
   return true;
 }
 
-
 bool CHA::IsImplemented(const Class& cls) {
   // Function type aliases have different type checking rules.
   ASSERT(!cls.IsTypedefClass());
   // Can't track dependencies for classes on the VM heap since those are
   // read-only.
   // TODO(fschneider): Enable tracking of CHA dependent code for VM heap
   // classes.
   if (cls.InVMHeap()) return true;
 
   return cls.is_implemented();
 }
 
-
 static intptr_t CountFinalizedSubclasses(Thread* thread, const Class& cls) {
   intptr_t count = 0;
   const GrowableObjectArray& cls_direct_subclasses =
       GrowableObjectArray::Handle(thread->zone(), cls.direct_subclasses());
   if (cls_direct_subclasses.IsNull()) return count;
   Class& direct_subclass = Class::Handle(thread->zone());
   for (intptr_t i = 0; i < cls_direct_subclasses.Length(); i++) {
     direct_subclass ^= cls_direct_subclasses.At(i);
     // Unfinalized classes are treated as non-existent for CHA purposes,
     // as that means that no instance of that class exists at runtime.
     if (!direct_subclass.is_finalized()) {
       continue;
     }
 
     count += 1 + CountFinalizedSubclasses(thread, direct_subclass);
   }
   return count;
 }
 
-
 bool CHA::IsConsistentWithCurrentHierarchy() const {
   for (intptr_t i = 0; i < guarded_classes_.length(); i++) {
     const intptr_t subclass_count =
         CountFinalizedSubclasses(thread_, *guarded_classes_[i].cls);
     if (guarded_classes_[i].subclass_count != subclass_count) {
       return false;
     }
   }
   return true;
 }
 
-
 bool CHA::HasOverride(const Class& cls,
                       const String& function_name,
                       intptr_t* subclasses_count) {
   // Can't track dependencies for classes on the VM heap since those are
   // read-only.
   // TODO(fschneider): Enable tracking of CHA dependent code for VM heap
   // classes.
   if (cls.InVMHeap()) return true;
 
   // Subclasses of Object are not tracked by CHA. Safely assume that overrides
@@ skipping 24 matching lines @@
     if (HasOverride(direct_subclass, function_name, subclasses_count)) {
       return true;
     }
 
     (*subclasses_count)++;
   }
 
   return false;
 }
 
-
 void CHA::RegisterDependencies(const Code& code) const {
   for (intptr_t i = 0; i < guarded_classes_.length(); ++i) {
     guarded_classes_[i].cls->RegisterCHACode(code);
   }
 }
 
-
 }  // namespace dart