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Sig: Depuración de Regexps Sup: Análisis Sintáctico con Regexp::Grammars Ant: Depuración Err: Si hallas una errata ...

Mensajes de log del usuario

Both static and interactive debugging send a series of predefined log messages to whatever log file you have specified. It is also possible to send additional, user-defined messages to the log, using the "<log:...>" directive.

This directive expects either a simple text or a codeblock as its single argument. If the argument is a code block, that code is expected to return the text of the message; if the argument is anything else, that something else is the literal message. For example:

        <rule: ListElem>

            <Elem=   ( [a-z]\d+) >
                <log: Checking for a suffix, too...>

            <Suffix= ( : \d+   ) >?
                <log: (?{ "ListElem: $MATCH{Elem} and $MATCH{Suffix}" })>

User-defined log messages implemented using a codeblock can also specify a severity level. If the codeblock of a <log:...> directive returns two or more values, the first is treated as a log message severity indicator, and the remaining values as separate lines of text to be logged. For example:

        <rule: ListElem>
            <Elem=   ( [a-z]\d+) >
            <Suffix= ( : \d+   ) >?

                <log: (?{
                    warn => "Elem was: $MATCH{Elem}",
                            "Suffix was $MATCH{Suffix}",
                })>

When they are encountered, user-defined log messages are interspersed between any automatic log messages (i.e. from the debugger), at the correct level of nesting for the current rule.


next up previous contents index PLPL moodlepserratamodulosperlmonksperldocapuntes LHPgoogleetsiiullpcgull
Sig: Depuración de Regexps Sup: Análisis Sintáctico con Regexp::Grammars Ant: Depuración Err: Si hallas una errata ...
Casiano Rodríguez León
2012-05-22