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# Copyright (c) 1997-2024
# Ewgenij Gawrilow, Michael Joswig, and the polymake team
# Technische Universität Berlin, Germany
# https://polymake.org
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation; either version 2, or (at your option) any
# later version: http://www.gnu.org/licenses/gpl.txt.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#-------------------------------------------------------------------------------
use strict;
use namespaces;
use warnings qw(FATAL void syntax misc);
require "constant.pm";
require "Polymake/regex.pl";
package Polymake::Enum;
sub import {
shift;
my $pkg = caller;
my $subpkg = shift;
$pkg .= "::$subpkg" if $subpkg ne "_";
$pkg =~ /^$qual_id_re$/o or croak( "Polymake::Enum - invalid package name $pkg" );
my $consts;
unless (@_ == 1 && is_hash($consts = $_[0])) {
my $cnt = 0;
$consts = { map { ($_ => $cnt++) } @_ };
$cnt > 0 or croak( "usage:\nuse Polymake::Enum CLASSNAME => { ID => VALUE };\n or\nuse Polymake::Enum CLASSNAME => qw( ID ... )" );
}
my $symtab = get_symtab($pkg, true);
foreach my $id (keys %$consts) {
namespaces::declare_const_sub($symtab, $id);
}
local caller $symtab;
constant->import($consts);
}
1
# Local Variables:
# cperl-indent-level:3
# indent-tabs-mode:nil
# End:
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