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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.
#include "base/trace_event/trace_buffer.h"
#include <memory>
#include <utility>
#include "base/functional/bind.h"
namespace base::trace_event {
TraceResultBuffer::OutputCallback
TraceResultBuffer::SimpleOutput::GetCallback() {
return BindRepeating(&SimpleOutput::Append, Unretained(this));
}
void TraceResultBuffer::SimpleOutput::Append(
const std::string& json_trace_output) {
json_output += json_trace_output;
}
TraceResultBuffer::TraceResultBuffer() : append_comma_(false) {}
TraceResultBuffer::~TraceResultBuffer() = default;
void TraceResultBuffer::SetOutputCallback(OutputCallback json_chunk_callback) {
output_callback_ = std::move(json_chunk_callback);
}
void TraceResultBuffer::Start() {
append_comma_ = false;
output_callback_.Run("[");
}
void TraceResultBuffer::AddFragment(const std::string& trace_fragment) {
if (append_comma_) {
output_callback_.Run(",");
}
append_comma_ = true;
output_callback_.Run(trace_fragment);
}
void TraceResultBuffer::Finish() {
output_callback_.Run("]");
}
} // namespace base::trace_event
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