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################################################################################
#
# $Project: /Convert-Binary-C $
# $Author: mhx $
# $Date: 2009/03/15 04:10:42 +0100 $
# $Revision: 12 $
# $Source: /xsubs/tag.xs $
#
################################################################################
#
# Copyright (c) 2002-2009 Marcus Holland-Moritz. All rights reserved.
# This program is free software; you can redistribute it and/or modify
# it under the same terms as Perl itself.
#
################################################################################
################################################################################
#
# METHOD: tag / untag
#
# WRITTEN BY: Marcus Holland-Moritz ON: Dec 2004
# CHANGED BY: ON:
#
################################################################################
void
CBC::tag(type, ...)
const char *type
ALIAS:
untag = 1
PREINIT:
CBC_METHOD_VAR;
TagTypeInfo tti;
CtTagList *taglist;
CODE:
switch (ix)
{
case 0:
CBC_METHOD_SET("tag");
break;
case 1:
CBC_METHOD_SET("untag");
break;
default:
fatal("Invalid alias (%d) for tag method", ix);
break;
}
CT_DEBUG_METHOD1("'%s'", type);
if (ix == 0 && items <= 3 && GIMME_V == G_VOID)
{
WARN_VOID_CONTEXT;
XSRETURN_EMPTY;
}
NEED_PARSE_DATA;
tti.type = type;
if (!get_member_info(aTHX_ THIS, type, &tti.mi, 0))
Perl_croak(aTHX_ "Cannot find '%s'", type);
if (tti.mi.level != 0)
Perl_croak(aTHX_ "Cannot tag array members");
taglist = tti.mi.pDecl ? &tti.mi.pDecl->tags
: find_taglist_ptr(tti.mi.type.ptr);
assert(taglist != NULL);
if (ix == 0) /* tag */
{
if (items == 2)
ST(0) = get_tags(aTHX_ &tti, *taglist);
else if (items == 3)
handle_tag(aTHX_ &tti, taglist, ST(2), NULL, &ST(0));
else if (items % 2 == 0)
{
int i;
for (i = 2; i < items; i += 2)
handle_tag(aTHX_ &tti, taglist, ST(i), ST(i+1), NULL);
}
else
Perl_croak(aTHX_ "Invalid number of arguments to %s", method);
}
else /* untag */
{
if (items == 2)
delete_all_tags(taglist);
else
{
int i;
for (i = 2; i < items; i++)
handle_tag(aTHX_ &tti, taglist, ST(i), &PL_sv_undef, NULL);
}
}
XSRETURN(1);
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