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/*
** Splint - annotation-assisted static program checker
** Copyright (C) 1994-2003 University of Virginia,
** Massachusetts Institute of Technology
**
** 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 of the License, or (at your
** option) any later version.
**
** 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.
**
** The GNU General Public License is available from http://www.gnu.org/ or
** the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
** MA 02111-1307, USA.
**
** For information on splint: info@splint.org
** To report a bug: splint-bug@splint.org
** For more information: http://www.splint.org
*/
/*
** ltokenList.c
**
** based on list_template.c
**
** where T has T_equal (or change this) and T_unparse
*/
# include "splintMacros.nf"
# include "basic.h"
/*@notnull@*/ /*@only@*/ ltokenList
ltokenList_new ()
{
ltokenList s = (ltokenList) dmalloc (sizeof (*s));
s->nelements = 0;
s->nspace = ltokenListBASESIZE;
s->elements = (ltoken *)
dmalloc (sizeof (*s->elements) * ltokenListBASESIZE);
s->current = 0;
return (s);
}
/*@notnull@*/ /*@only@*/ ltokenList
ltokenList_singleton (ltoken l)
{
ltokenList s = (ltokenList) dmalloc (sizeof (*s));
s->nelements = 1;
s->nspace = ltokenListBASESIZE - 1;
s->elements = (ltoken *) dmalloc (sizeof (*s->elements) * ltokenListBASESIZE);
s->elements[0] = l;
s->current = 0;
return (s);
}
static void
ltokenList_grow (/*@notnull@*/ ltokenList s)
{
int i;
ltoken *newelements;
s->nspace += ltokenListBASESIZE;
newelements = (ltoken *) dmalloc (sizeof (*newelements)
* (s->nelements + s->nspace));
for (i = 0; i < s->nelements; i++)
{
newelements[i] = s->elements[i];
}
sfree (s->elements);
s->elements = newelements;
}
ltokenList
ltokenList_push (/*@returned@*/ ltokenList s, ltoken el)
{
ltokenList_addh (s, el);
return s;
}
void
ltokenList_addh (ltokenList s, ltoken el)
{
llassert (ltokenList_isDefined (s));
if (s->nspace <= 0)
ltokenList_grow (s);
s->nspace--;
s->elements[s->nelements] = el;
s->nelements++;
}
void
ltokenList_reset (ltokenList s)
{
if (ltokenList_isDefined (s))
{
s->current = 0;
}
}
bool
ltokenList_isFinished (ltokenList s)
{
return (ltokenList_isUndefined(s) || (s->current == s->nelements));
}
void
ltokenList_advance (ltokenList s)
{
if (ltokenList_isDefined (s))
{
s->current++;
llassert (s->current <= s->nelements);
}
}
ltoken
ltokenList_head (ltokenList s)
{
llassert (ltokenList_isDefined (s) && s->nelements > 0);
return (s->elements[0]);
}
bool
ltokenList_equal (ltokenList s1, ltokenList s2)
{
if (ltokenList_isUndefined (s1))
{
return (ltokenList_isEmpty (s2));
}
else
{
if (ltokenList_isUndefined (s2))
{
return ltokenList_isEmpty (s1);
}
else
{
int i;
int size = s1->nelements;
if (s2->nelements != size)
return FALSE;
for (i = 0; i < size; i++)
{
if (!ltoken_similar (s1->elements[i], s2->elements[i]))
return FALSE;
}
return TRUE;
}
}
}
/*@only@*/ ltokenList
ltokenList_copy (ltokenList s)
{
ltokenList r = ltokenList_new ();
ltokenList_elements (s, x)
{
ltokenList_addh (r, ltoken_copy (x));
} end_ltokenList_elements;
return r;
}
void
ltokenList_removeCurrent (ltokenList s)
{
int i;
llassert (ltokenList_isDefined (s) && s->current >= 0 && s->current < s->nelements);
for (i = s->current; i < s->nelements - 1; i++)
{
s->elements[i] = s->elements[i+1];
}
s->nelements--;
s->nspace++;
}
ltoken
ltokenList_current (ltokenList s)
{
llassert (ltokenList_isDefined (s) && s->current >= 0 && s->current < s->nelements);
return (s->elements[s->current]);
}
/*@only@*/ cstring
ltokenList_unparse (ltokenList s)
{
int i;
cstring st = cstring_undefined;
if (ltokenList_isDefined (s))
{
for (i = 0; i < s->nelements; i++)
{
if (i == 0)
{
st = cstring_copy (ltoken_unparse (s->elements[i]));
}
else
st = message ("%q, %s", st, ltoken_unparse (s->elements[i]));
}
}
return st;
}
void
ltokenList_free (ltokenList s)
{
if (ltokenList_isDefined (s))
{
sfree (s->elements);
sfree (s);
}
}
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