Corrade::Utility::Warning class
#include <Corrade/Utility/Debug.h>

Warning output handler.

Same as Debug, but by default writes output to standard error output. Thus it is possible to separate / mute Debug, Warning and Error outputs.

Base classes

class Debug: Debug output handler.

Public static functions

static auto defaultOutput() -> std::ostream* new in 2019.10: Default warning output stream.
static auto output() -> std::ostream*: Current warning output stream.
static auto isTty() -> bool: Whether current warning output is a TTY.

Constructors, destructors, conversion operators

Warning(Flags flags = {}) explicit: Default constructor.
Warning(std::ostream* output, Flags flags = {}) explicit: Construct with redirection to a stream.
Warning(std::nullptr_t output, Flags flags = {}) explicit
Warning(Containers::String* output, Flags flags = {}) explicit new in Git master: Construct with redirection to a string.
Warning(const Warning&) deleted: Copying is not allowed.
Warning(Warning&&) defaulted: Move constructor.
~Warning(): Destructor.

Public functions

auto operator=(const Warning&) -> Warning& deleted: Copying is not allowed.
auto operator=(Warning&&) -> Warning& deleted: Move assignment is not allowed.

Function documentation

static std::ostream* Corrade::Utility::Warning::defaultOutput() new in 2019.10

Default warning output stream.

Warning output when no output redirection happens. A pointer to std::cerr.

static std::ostream* Corrade::Utility::Warning::output()

Current warning output stream.

Warning output constructed with the Warning(Flags) constructor will be using this output stream.

static bool Corrade::Utility::Warning::isTty()

Whether current warning output is a TTY.

Calls isTty(std::ostream*) with output of enclosing Warning instance or with std::cerr if there isn't any.

Corrade::Utility::Warning::Warning(Flags flags = {}) explicit

Default constructor.

Parameters
flags	Output flags

Inherits output of enclosing Warning instance or uses std::cerr if there isn't any.

Corrade::Utility::Warning::Warning(std::ostream* output, Flags flags = {}) explicit

Construct with redirection to a stream.

Parameters
output	Stream where to put warning output. If set to `nullptr`, no warning output will be written anywhere.
flags	Output flags

All new instances created using the default Warning() constructor during lifetime of this instance will inherit the output set in output.

Corrade::Utility::Warning::Warning(std::nullptr_t output, Flags flags = {}) explicit

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Corrade::Utility::Warning::Warning(Containers::String* output, Flags flags = {}) explicit new in Git master

Construct with redirection to a string.

Parameters
output	String where to put debug output. If set to `nullptr`, no debug output will be written anywhere.
flags	Output flags

If output is not nullptr, its existing contents (if any) are appended to. Internally the function allocates a custom std::ostream and frees it again during its own destruction.

Corrade::Utility::Warning::~Warning()

Destructor.

Resets the output redirection back to the output of enclosing scope. If there was any output, adds newline at the end. Also resets output color modifier, if there was any.