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ExtUtils::Typemaps::OutPerlaProgrammers	RefereExtUtils::Typemaps::OutputMap(3)

NAME
       ExtUtils::Typemaps::OutputMap - Entry in	the OUTPUT section of a
       typemap

SYNOPSIS
	 use ExtUtils::Typemaps;
	 ...
	 my $output = $typemap->get_output_map('T_NV');
	 my $code = $output->code();
	 $output->code("...");

DESCRIPTION
       Refer to	ExtUtils::Typemaps for details.

METHODS
   new
       Requires	"xstype" and "code" parameters.

   code
       Returns or sets the OUTPUT mapping code for this	entry.

   xstype
       Returns the name	of the XS type of the OUTPUT map.

   cleaned_code
       Returns a cleaned-up copy of the	code to	which certain transformations
       have been applied to make it more ANSI compliant.

   targetable
       This is an obscure but effective	optimization that used to live in
       "ExtUtils::ParseXS" directly. Not implementing it should	never result
       in incorrect use	of typemaps, just less efficient code.

       In a nutshell, this will	check whether the output code involves calling
       "sv_setiv", "sv_setuv", "sv_setnv", "sv_setpv" or "sv_setpvn" to	set
       the special $arg	placeholder to a new value AT THE END OF THE OUTPUT
       CODE. If	that is	the case, the code is eligible for using the
       "TARG"-related macros to	optimize this.	Thus the name of the method:
       "targetable".

       If this optimization is applicable, "ExtUtils::ParseXS" will emit a
       "dXSTARG;" definition at	the start of the generated XSUB	code, and type
       (see below) dependent code to set "TARG"	and push it on the stack at
       the end of the generated	XSUB code.

       If the optimization can not be applied, this returns undef.  If it can
       be applied, this	method returns a hash reference	containing the
       following information:

	 type:	    Any	of the characters i, u,	n, p
	 with_size: Bool indicating whether this is the	sv_setpvn variant
	 what:	    The	code that actually evaluates to	the output scalar
	 what_size: If "with_size", this has the string	length (as code,
		    not	constant, including leading comma)

SEE ALSO
       ExtUtils::Typemaps

AUTHOR
       Steffen Mueller "<smueller@cpan.org">

COPYRIGHT & LICENSE
       Copyright 2009, 2010, 2011, 2012	Steffen	Mueller

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

perl v5.28.3			  2020-05-14  ExtUtils::Typemaps::OutputMap(3)

NAME | SYNOPSIS | DESCRIPTION | METHODS | SEE ALSO | AUTHOR | COPYRIGHT & LICENSE

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