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#pragma once
#include "output.h"
/**
* @addtogroup Streams
* @{
*/
/**
* Debug output stream. Writes into `stderr`.
*/
class TDebugOutput: public IOutputStream {
public:
inline TDebugOutput() noexcept = default;
~TDebugOutput() override = default;
TDebugOutput(TDebugOutput&&) noexcept = default;
TDebugOutput& operator=(TDebugOutput&&) noexcept = default;
private:
void DoWrite(const void* buf, size_t len) override;
};
/**
* @returns Standard debug stream.
* @see Cdbg
*/
IOutputStream& StdDbgStream() noexcept;
/**
* This function returns the current debug level as set via `DBGOUT` environment
* variable.
*
* Note that the proper way to use this function is via `Y_DBGTRACE` macro.
* There are very few cases when there is a need to use it directly.
*
* @returns Debug level.
* @see ETraceLevel
* @see DBGTRACE
*/
int StdDbgLevel() noexcept;
/**
* Standard debug stream.
*
* Behavior of this stream is controlled via `DBGOUT` environment variable.
* If this variable is set, then this stream is redirected into `stderr`,
* otherwise whatever is written into it is simply ignored.
*/
#define Cdbg (StdDbgStream())
/** @} */
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