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// 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 BASE_TRACE_EVENT_TRACE_EVENT_ARGUMENT_H_
#define BASE_TRACE_EVENT_TRACE_EVENT_ARGUMENT_H_
#include <stddef.h>
#include <memory>
#include <string>
#include <vector>
#include "base/macros.h"
#include "base/pickle.h"
#include "base/strings/string_piece.h"
#include "base/trace_event/trace_event_impl.h"
namespace base {
class Value;
namespace trace_event {
class BASE_EXPORT TracedValue : public ConvertableToTraceFormat {
public:
TracedValue();
explicit TracedValue(size_t capacity);
~TracedValue() override;
void EndDictionary();
void EndArray();
// These methods assume that |name| is a long lived "quoted" string.
void SetInteger(const char* name, int value);
void SetDouble(const char* name, double value);
void SetBoolean(const char* name, bool value);
void SetString(const char* name, base::StringPiece value);
void SetValue(const char* name, const TracedValue& value);
void BeginDictionary(const char* name);
void BeginArray(const char* name);
// These, instead, can be safely passed a temporary string.
void SetIntegerWithCopiedName(base::StringPiece name, int value);
void SetDoubleWithCopiedName(base::StringPiece name, double value);
void SetBooleanWithCopiedName(base::StringPiece name, bool value);
void SetStringWithCopiedName(base::StringPiece name,
base::StringPiece value);
void SetValueWithCopiedName(base::StringPiece name,
const TracedValue& value);
void BeginDictionaryWithCopiedName(base::StringPiece name);
void BeginArrayWithCopiedName(base::StringPiece name);
void AppendInteger(int);
void AppendDouble(double);
void AppendBoolean(bool);
void AppendString(base::StringPiece);
void BeginArray();
void BeginDictionary();
// ConvertableToTraceFormat implementation.
void AppendAsTraceFormat(std::string* out) const override;
void EstimateTraceMemoryOverhead(TraceEventMemoryOverhead* overhead) override;
// DEPRECATED: do not use, here only for legacy reasons. These methods causes
// a copy-and-translation of the base::Value into the equivalent TracedValue.
// TODO(primiano): migrate the (three) existing clients to the cheaper
// SetValue(TracedValue) API. crbug.com/495628.
void SetValue(const char* name, std::unique_ptr<base::Value> value);
void SetBaseValueWithCopiedName(base::StringPiece name,
const base::Value& value);
void AppendBaseValue(const base::Value& value);
// Public for tests only.
std::unique_ptr<base::Value> ToBaseValue() const;
private:
Pickle pickle_;
#ifndef NDEBUG
// In debug builds checks the pairings of {Start,End}{Dictionary,Array}
std::vector<bool> nesting_stack_;
#endif
DISALLOW_COPY_AND_ASSIGN(TracedValue);
};
} // namespace trace_event
} // namespace base
#endif // BASE_TRACE_EVENT_TRACE_EVENT_ARGUMENT_H_
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