ExtUtils::Typemaps::OutputMap - Entry in the OUTPUT section of a typemap
use ExtUtils::Typemaps;
...
my $output = $typemap->get_output_map('T_NV');
my $code = $output->code();
$output->code("...");Refer to ExtUtils::Typemaps for details.
Requires xstype and code parameters.
Returns or sets the OUTPUT mapping code for this entry.
Returns the name of the XS type of the OUTPUT map.
Returns a cleaned-up copy of the code to which certain transformations have been applied to make it more ANSI compliant.
This is an obscure optimization that used to live in ExtUtils::ParseXS directly.
In a nutshell, this will check whether the output code involves calling set_iv, set_uv, set_nv, set_pv or set_pvn 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 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)Steffen Mueller <smueller@cpan.org>
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.