tools/clang/blink_gc_plugin/CheckGCRootsVisitor.h

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef TOOLS_BLINK_GC_PLUGIN_CHECK_GC_ROOTS_VISITOR_H_
   6 #define TOOLS_BLINK_GC_PLUGIN_CHECK_GC_ROOTS_VISITOR_H_
   7
   8 #include <set>
   9 #include <vector>
  10
  11 #include "Edge.h"
  12 #include "RecordInfo.h"
  13
  14 // This visitor checks that the fields of a class and the fields of
  15 // its part objects don't define GC roots.
  16 class CheckGCRootsVisitor : public RecursiveEdgeVisitor {
  17  public:
  18   typedef std::vector<FieldPoint*> RootPath;
  19   typedef std::set<RecordInfo*> VisitingSet;
  20   typedef std::vector<RootPath> Errors;
  21
  22   CheckGCRootsVisitor();
  23
  24   Errors& gc_roots();
  25
  26   bool ContainsGCRoots(RecordInfo* info);
  27
  28   void VisitValue(Value* edge) override;
  29   void VisitPersistent(Persistent* edge) override;
  30   void AtCollection(Collection* edge) override;
  31
  32  private:
  33   RootPath current_;
  34   VisitingSet visiting_set_;
  35   Errors gc_roots_;
  36 };
  37
  38 #endif  // TOOLS_BLINK_GC_PLUGIN_CHECK_GC_ROOTS_VISITOR_H_