base/trace_event/trace_event_argument.h

   1 // Copyright 2014 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 BASE_TRACE_EVENT_TRACE_EVENT_ARGUMENT_H_
   6 #define BASE_TRACE_EVENT_TRACE_EVENT_ARGUMENT_H_
   7
   8 #include <string>
   9 #include <vector>
  10
  11 #include "base/memory/scoped_ptr.h"
  12 #include "base/trace_event/trace_event.h"
  13
  14 namespace base {
  15 class DictionaryValue;
  16 class ListValue;
  17 class Value;
  18
  19 namespace trace_event {
  20
  21 class BASE_EXPORT TracedValue : public ConvertableToTraceFormat {
  22  public:
  23   TracedValue();
  24
  25   void EndDictionary();
  26   void EndArray();
  27
  28   void SetInteger(const char* name, int value);
  29   void SetDouble(const char* name, double);
  30   void SetBoolean(const char* name, bool value);
  31   void SetString(const char* name, const std::string& value);
  32   void SetValue(const char* name, scoped_ptr<Value> value);
  33   void BeginDictionary(const char* name);
  34   void BeginArray(const char* name);
  35
  36   void AppendInteger(int);
  37   void AppendDouble(double);
  38   void AppendBoolean(bool);
  39   void AppendString(const std::string&);
  40   void BeginArray();
  41   void BeginDictionary();
  42
  43   void AppendAsTraceFormat(std::string* out) const override;
  44
  45  private:
  46   ~TracedValue() override;
  47
  48   DictionaryValue* GetCurrentDictionary();
  49   ListValue* GetCurrentArray();
  50
  51   scoped_ptr<base::Value> root_;
  52   std::vector<Value*> stack_;  // Weak references.
  53   DISALLOW_COPY_AND_ASSIGN(TracedValue);
  54 };
  55
  56 }  // namespace trace_event
  57 }  // namespace base
  58
  59 #endif  // BASE_TRACE_EVENT_TRACE_EVENT_ARGUMENT_H_