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// Written in the D programming language.
/**
Source: $(PHOBOSSRC std/experimental/logger/nulllogger.d)
*/
module std.experimental.logger.nulllogger;
import std.experimental.logger.core;
/** The `NullLogger` will not process any log messages.
In case of a log message with `LogLevel.fatal` nothing will happen.
*/
class NullLogger : Logger
{
/** The default constructor for the `NullLogger`.
Independent of the parameter this Logger will never log a message.
Params:
lv = The `LogLevel` for the `NullLogger`. By default the `LogLevel`
for `NullLogger` is `LogLevel.all`.
*/
this(const LogLevel lv = LogLevel.all) @safe
{
super(lv);
this.fatalHandler = delegate() {};
}
override protected void writeLogMsg(ref LogEntry payload) @safe @nogc
{
}
}
///
@safe unittest
{
import std.experimental.logger.core : LogLevel;
auto nl1 = new NullLogger(LogLevel.all);
nl1.info("You will never read this.");
nl1.fatal("You will never read this, either and it will not throw");
}
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