86 lines
2.2 KiB
C++
86 lines
2.2 KiB
C++
/*
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* Copyright (c) 1999-2012 Stephen Williams (steve@icarus.com)
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*
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* This source code is free software; you can redistribute it
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* and/or modify it in source code form under the terms of the GNU
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* General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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/*
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* Find here the methods functions in support of iterator objects.
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*/
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# include "vpi_priv.h"
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# include <cstdlib>
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# include <cassert>
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# include "ivl_alloc.h"
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static int iterator_free_object(vpiHandle ref)
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{
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struct __vpiIterator*hp = dynamic_cast<__vpiIterator*>(ref);
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assert(hp);
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if (hp->free_args_flag)
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free(hp->args);
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delete hp;
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return 1;
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}
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inline __vpiIterator::__vpiIterator()
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{ }
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int __vpiIterator::get_type_code(void) const
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{ return vpiIterator; }
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__vpiHandle::free_object_fun_t __vpiIterator::free_object_fun(void)
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{ return &iterator_free_object; }
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vpiHandle vpip_make_iterator(unsigned nargs, vpiHandle*args,
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bool free_args_flag)
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{
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struct __vpiIterator*res = new __vpiIterator;
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res->args = args;
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res->nargs = nargs;
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res->next = 0;
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res->free_args_flag = free_args_flag;
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return res;
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}
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/*
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* The vpi_scan function only applies to iterators. It returns the
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* next vpiHandle in the iterated list.
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*/
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vpiHandle vpi_scan(vpiHandle ref)
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{
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if (ref == 0) {
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fprintf(stderr, "ERROR: NULL handle passed to vpi_scan.\n");
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assert(0);
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return 0;
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}
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if (struct __vpiIterator*hp = dynamic_cast<__vpiIterator*>(ref)) {
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if (hp->next == hp->nargs) {
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vpi_free_object(ref);
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return 0;
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}
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return hp->args[hp->next++];
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}
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return ref->vpi_index(0);
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}
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