latexml 0.8.1-1 / usr / share / perl5 / LaTeXML / Package / xargs.sty.ltxml

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# -*- mode: Perl -*-
# /=====================================================================\ #
# | xargs.sty                                                           | #
# | Implementation for LaTeXML                                          | #
# |=====================================================================| #
# | Part of LaTeXML:                                                    | #
# |  Public domain software, produced as part of work done by the       | #
# |  United States Government & not subject to copyright in the US.     | #
# |---------------------------------------------------------------------| #
# | Thanks to Kim Philipp Jablonski <kpjkpjkpjkpjkpjkpj@gmail.com>      | #
# | of the arXMLiv group for initial implementation                     | #
# |    http://arxmliv.kwarc.info/                                       | #
# | Released under the Gnu Public License                               | #
# | Released to the Public Domain                                       | #
# |---------------------------------------------------------------------| #
# | Bruce Miller <bruce.miller@nist.gov>                        #_#     | #
# | http://dlmf.nist.gov/LaTeXML/                              (o o)    | #
# \=========================================================ooo==U==ooo=/ #

package LaTeXML::Package::Pool;
use strict;
use warnings;
use LaTeXML::Package;

######################################################

DefKeyVal('xargs', 'usedefault', undef, '');

##################
# Parameter Type #
##################

DefParameterType('XArgsOptional', sub {
    my ($gullet, $default, $usedefault, $inner) = @_;
    my $value = $gullet->readOptional;
    if (($usedefault && ToString($value) eq ToString($usedefault)) ||
      (!defined $usedefault && ToString($value) eq '')) {
      $value = $default; }
    $value; },
  optional => 1);

#########
# Utils #
#########

# generate $paramlist
sub convertXArgsArgs {
  my ($nargs, $keyval) = @_;
  my @paramlist = ();

  # fix $nargs
  $nargs = $nargs->toString if ref $nargs;
  $nargs = 0 unless $nargs;

  for my $i (1 .. $nargs) {
    my $val = ($keyval) ? $keyval->getValue($i) : undef;
    if (defined $val) {
      my $usedef = ($keyval) ? $keyval->getValue('usedefault') : undef;
      if (defined $usedef) {
        push(@paramlist, LaTeXML::Core::Parameter->new(
            'XArgsOptional',
            "XArgsOptional:" . $val->toString() . "|" . ToString($usedef),
            extra => [$val, $usedef]
            )); }
      else {
        push(@paramlist, LaTeXML::Core::Parameter->new(
            'Optional',
            "Optional:" . $val->toString(),
            extra => [$val, $usedef]
            )); } }
    else {
      push(@paramlist, LaTeXML::Core::Parameter->new('Plain', "{}")); } }
  return LaTeXML::Core::Parameters->new(@paramlist); }

# generate command prefix (\global, \long, ...; but not \outer)
sub getXArgsIsGlobal {
  my ($star, $keyval) = @_;
  my $prefix = '';
  if (!defined $star) {
    # defaults to \long for unstarred form
    $prefix = '\\long'; }
  if (defined $keyval) {
    my $p = $keyval->getValue('addprefix');
    $prefix .= join('', map { ToString($_) } (ref $p eq 'ARRAY' ? @$p : ($p))); }

  # 1 if global in $prefix, 0 otherwise
  return (index($prefix, 'global') != -1) ? 1 : 0; }

##########
# Macros #
##########

DefPrimitive('\CheckCommandx OptionalMatch:* DefToken [] OptionalKeyVals:xargs {}', undef);

DefPrimitive('\newcommandx OptionalMatch:* DefToken [] OptionalKeyVals:xargs {}', sub {
    my ($stomach, $star, $cs, $nargs, $defaults, $body) = @_;
    if (!isDefinable($cs)) {
      Info('ignore', $cs, $stomach,
        "Ignoring redefinition (\\newcommandx) of '" . Stringify($cs) . "'");
      return; }
    DefMacroI($cs, convertXArgsArgs($nargs, $defaults), $body, (getXArgsIsGlobal($star, $defaults) ? (scope => 'global') : ())); });

DefPrimitive('\renewcommandx OptionalMatch:* DefToken [] OptionalKeyVals:xargs {}', sub {
    my ($stomach, $star, $cs, $nargs, $defaults, $body) = @_;
    DefMacroI($cs, convertXArgsArgs($nargs, $defaults), $body, (getXArgsIsGlobal($star, $defaults) ? (scope => 'global') : ())); });

DefPrimitive('\providecommandx OptionalMatch:* DefToken [] OptionalKeyVals:xargs {}', sub {
    my ($stomach, $star, $cs, $nargs, $defaults, $body) = @_;
    return unless isDefinable($cs);
    DefMacroI($cs, convertXArgsArgs($nargs, $defaults), $body, (getXArgsIsGlobal($star, $defaults) ? (scope => 'global') : ())); });

DefPrimitive('\DeclareRobustCommandx OptionalMatch:* DefToken [] OptionalKeyVals:xargs {}', sub {
    my ($stomach, $star, $cs, $nargs, $defaults, $body) = @_;
    DefMacroI($cs, convertXArgsArgs($nargs, $defaults), $body, (getXArgsIsGlobal($star, $defaults) ? (scope => 'global') : ())); });

DefPrimitive('\newenvironmentx OptionalMatch:* {} [] OptionalKeyVals:xargs {}{}', sub {
    my ($stomach, $star, $cs, $nargs, $defaults, $preamble, $postamble) = @_;
    if (LookupDefinition(T_CS("\\$cs"))) {
      Info('ignore', $cs, $stomach,
        "Ignoring redefinition (\\newenvironmentx) of Environment '$cs'");
      return; }
    $cs = ToString($cs);
    DefMacroI(T_CS("\\$cs"), convertXArgsArgs($nargs, $defaults), $preamble, (getXArgsIsGlobal($star, $defaults) ? (scope => 'global') : ()));
    DefMacroI(T_CS("\\end$cs"), undef, $postamble, (getXArgsIsGlobal($star, $defaults) ? (scope => 'global') : ())); });

DefPrimitive('\renewenvironmentx OptionalMatch:* {} [] OptionalKeyVals:xargs {}{}', sub {
    my ($stomach, $star, $cs, $nargs, $defaults, $preamble, $postamble) = @_;
    $cs = ToString($cs);
    DefMacroI(T_CS("\\$cs"), convertXArgsArgs($nargs, $defaults), $preamble, (getXArgsIsGlobal($star, $defaults) ? (scope => 'global') : ()));
    DefMacroI(T_CS("\\end$cs"), undef, $postamble, (getXArgsIsGlobal($star, $defaults) ? (scope => 'global') : ())); });

######################################################

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