ExtUtils::Typemaps::OutputMap - phpMan

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 AT 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.