NAME

Aspect::JoinPoint::Call - Class representing a call join point

SYNOPSIS

There is no synopsis, as this class is only used within Aspects; if you develop Aspect internals, you'll know how to use it. If not, you don't need to. If you're curious, read the source.

DESCRIPTION

This class represents a call join point.

METHODS

This class inherits from Aspect::JoinPoint::Sub. In addition, it implements and/or overrides the following methods:

as_string()

This method, which is called automatically via overloading if a reference to an object of this type is printed. It returns a string saying that it is a call join point and also gives the name of the subroutine this join point belongs to.

install(coderef)

This method takes a coderef (to advice code) and installs it at a location appropriate to this call join point, i.e. as a prewrapper for the affected subroutine using Hook::LexWrap. See that manpage for what this means for the advice code, noting especially that caller, wantarray and argument information are preserved and execution of the wrapped subroutine can be short-circuited by providing a return value.

The method returns handles to the installed advice code that can be dealt with lexically as described for handlers() in the Aspect::Modular manpage.

Note the potential use of the $::thisjp variable in the advice code as described in Aspect::JoinPoint.

BUGS

None known so far. If you find any bugs or oddities, please do inform the author.

AUTHOR

Marcel Grunauer, <marcel@codewerk.com>

COPYRIGHT

Copyright 2001 Marcel Grunauer. All rights reserved.

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

SEE ALSO

perl(1), Aspect::Intro(3pm), Aspect::Overview(3pm).