third_party/WebKit/Source/platform/TracedValue.h

// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef TracedValue_h
#define TracedValue_h

#include "platform/EventTracer.h"

#include "wtf/PassRefPtr.h"
#include "wtf/text/WTFString.h"

namespace blink {
class TracedArrayValue;
class TracedDictionaryValue;
class InternalValue;

// TODO(bashi): Use Allocator which counts allocation size as tracing overhead.
typedef Vector<RefPtr<InternalValue>> TracedValueVector;
typedef HashMap<String, RefPtr<InternalValue>> TracedValueHashMap;

class PLATFORM_EXPORT TracedValue : public TraceEvent::ConvertableToTraceFormat {
    WTF_MAKE_NONCOPYABLE(TracedValue);

public:
    static PassRefPtr<TracedValue> create();

    void endDictionary();
    void endArray();

    void setInteger(const char* name, int value);
    void setDouble(const char* name, double);
    void setBoolean(const char* name, bool value);
    void setString(const char* name, const String& value);
    void beginArray(const char* name);
    void beginDictionary(const char* name);

    void pushInteger(int);
    void pushDouble(double);
    void pushBoolean(bool);
    void pushString(const String&);
    void beginArray();
    void beginDictionary();

    String asTraceFormat() const override;

private:
    TracedValue();
    ~TracedValue() override;

    TracedDictionaryValue* currentDictionary() const;
    TracedArrayValue* currentArray() const;

    TracedValueVector m_stack;
};

} // namespace blink

#endif // TracedValue_h