absl::LogSeverity

enum class LogSeverity : int;

Description

Values other than the four defined levels (e.g. produced by static_cast) are valid, but their semantics when passed to a function, macro, or flag depend on the function, macro, or flag. The usual behavior is to normalize such values to a defined severity level, however in some cases values other than the defined levels are useful for comparison.

Example:

// Effectively disables all logging: SetMinLogLevel(static_cast<absl::LogSeverity>(100));

Abseil flags may be defined with type LogSeverity. Dependency layering constraints require that the AbslParseFlag() overload be declared and defined in the flags library itself rather than here. The AbslUnparseFlag() overload is defined there as well for consistency.

absl::LogSeverity Flag String Representation

An absl::LogSeverity has a string representation used for parsing command-line flags based on the enumerator name (e.g. kFatal) or its unprefixed name (without the k) in any case-insensitive form. (E.g. "FATAL", "fatal" or "Fatal" are all valid.) Unparsing such flags produces an unprefixed string representation in all caps (e.g. "FATAL") or an integer.

Additionally, the parser accepts arbitrary integers (as if the type were int).

Examples:

--my_log_level=kInfo --my_log_level=INFO --my_log_level=info --my_log_level=0

DFATAL and kLogDebugFatal are similarly accepted.

Unparsing a flag produces the same result as absl::LogSeverityName() for the standard levels and a base-ten integer otherwise.