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// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef TOOLS_BLINK_GC_PLUGIN_CHECK_GC_ROOTS_VISITOR_H_
#define TOOLS_BLINK_GC_PLUGIN_CHECK_GC_ROOTS_VISITOR_H_
#include <set>
#include <vector>
#include "Edge.h"
#include "RecordInfo.h"
struct BlinkGCPluginOptions;
// This visitor checks that the fields of a class and the fields of
// its part objects don't define GC roots.
class CheckGCRootsVisitor : public RecursiveEdgeVisitor {
public:
typedef std::vector<FieldPoint*> RootPath;
typedef std::set<RecordInfo*> VisitingSet;
typedef std::vector<RootPath> Errors;
explicit CheckGCRootsVisitor(const BlinkGCPluginOptions&);
Errors& gc_roots();
Errors& gc_root_refs();
bool ContainsGCRoots(RecordInfo* info);
void VisitValue(Value* edge) override;
void VisitUniquePtr(UniquePtr*) override;
void VisitRawPtr(RawPtr*) override;
void VisitRefPtr(RefPtr*) override;
void VisitPersistent(Persistent* edge) override;
void VisitCollection(Collection* edge) override;
private:
RootPath current_;
VisitingSet visiting_set_;
Errors gc_roots_;
Errors gc_root_refs_;
bool is_ref_ = false;
bool should_check_unique_ptrs_;
};
#endif // TOOLS_BLINK_GC_PLUGIN_CHECK_GC_ROOTS_VISITOR_H_
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