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/* name.c -- Implementation File (module.c template V1.0)
Copyright (C) 1995 Free Software Foundation, Inc.
Contributed by James Craig Burley (burley@gnu.ai.mit.edu).
This file is part of GNU Fortran.
GNU Fortran 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.
GNU Fortran 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.
You should have received a copy of the GNU General Public License
along with GNU Fortran; see the file COPYING. If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA.
Related Modules:
None.
Description:
Name and name space abstraction.
Modifications:
*/
/* Include files. */
#include "proj.h"
#include "bad.h"
#include "name.h"
#include "lex.h"
#include "malloc.h"
#include "src.h"
#include "where.h"
/* Externals defined here. */
/* Simple definitions and enumerations. */
/* Internal typedefs. */
/* Private include files. */
/* Internal structure definitions. */
/* Static objects accessed by functions in this module. */
/* Static functions (internal). */
static ffename ffename_lookup_ (ffenameSpace ns, ffelexToken t, bool *found);
/* Internal macros. */
/* Searches for and returns the matching ffename object, or returns a
pointer to the name before which the new name should go. */
static ffename
ffename_lookup_ (ffenameSpace ns, ffelexToken t, bool *found)
{
ffename n;
for (n = ns->first; n != (ffename) &ns->first; n = n->next)
{
if (ffelex_token_strcmp (t, n->t) == 0)
{
*found = TRUE;
return n;
}
}
*found = FALSE;
return n; /* (n == (ffename) &ns->first) */
}
/* Searches for and returns the matching ffename object, or creates a new
one (with a NULL ffesymbol) and returns that. If last arg is TRUE,
check whether token meets character-content requirements (such as
"all characters must be uppercase", as determined by
ffesrc_bad_char_symbol (), issue diagnostic if it doesn't. */
ffename
ffename_find (ffenameSpace ns, ffelexToken t)
{
ffename n;
ffename newn;
bool found;
assert (ns != NULL);
assert ((t != NULL) && ((ffelex_token_type (t) == FFELEX_typeNAME)
|| (ffelex_token_type (t) == FFELEX_typeNAMES)));
n = ffename_lookup_ (ns, t, &found);
if (found)
return n;
newn = (ffename) malloc_new_ks (ns->pool, "FFENAME name", sizeof (*n));
newn->next = n;
newn->previous = n->previous;
n->previous = newn;
newn->previous->next = newn;
newn->t = ffelex_token_use (t);
newn->u.s = NULL;
return newn;
}
/* ffename_kill -- Kill name from name space
ffenameSpace ns;
ffename s;
ffename_kill(ns,s);
Removes the name from the name space. */
void
ffename_kill (ffenameSpace ns, ffename n)
{
assert (ns != NULL);
assert (n != NULL);
ffelex_token_kill (n->t);
n->next->previous = n->previous;
n->previous->next = n->next;
malloc_kill_ks (ns->pool, n, sizeof (*n));
}
/* ffename_lookup -- Look up name in name space
ffenameSpace ns;
ffelexToken t;
ffename s;
n = ffename_lookup(ns,t);
Searches for and returns the matching ffename object, or returns NULL. */
ffename
ffename_lookup (ffenameSpace ns, ffelexToken t)
{
ffename n;
bool found;
assert (ns != NULL);
assert ((t != NULL) && ((ffelex_token_type (t) == FFELEX_typeNAME)
|| (ffelex_token_type (t) == FFELEX_typeNAMES)));
n = ffename_lookup_ (ns, t, &found);
return found ? n : NULL;
}
/* ffename_space_drive_global -- Call given fn for each global in name space
ffenameSpace ns;
ffeglobal (*fn)();
ffename_space_drive_global(ns,fn); */
void
ffename_space_drive_global (ffenameSpace ns, ffeglobal (*fn) ())
{
ffename n;
if (ns == NULL)
return;
for (n = ns->first; n != (ffename) &ns->first; n = n->next)
{
if (n->u.g != NULL)
n->u.g = (*fn) (n->u.g);
}
}
/* ffename_space_drive_symbol -- Call given fn for each symbol in name space
ffenameSpace ns;
ffesymbol (*fn)();
ffename_space_drive_symbol(ns,fn); */
void
ffename_space_drive_symbol (ffenameSpace ns, ffesymbol (*fn) ())
{
ffename n;
if (ns == NULL)
return;
for (n = ns->first; n != (ffename) &ns->first; n = n->next)
{
if (n->u.s != NULL)
n->u.s = (*fn) (n->u.s);
}
}
/* ffename_space_kill -- Kill name space
ffenameSpace ns;
ffename_space_kill(ns);
Removes the names from the name space; kills the name space. */
void
ffename_space_kill (ffenameSpace ns)
{
assert (ns != NULL);
while (ns->first != (ffename) &ns->first)
ffename_kill (ns, ns->first);
malloc_kill_ks (ns->pool, ns, sizeof (*ns));
}
/* ffename_space_new -- Create name space
ffenameSpace ns;
ns = ffename_space_new(malloc_pool_image());
Create new name space. */
ffenameSpace
ffename_space_new (mallocPool pool)
{
ffenameSpace ns;
ns = (ffenameSpace) malloc_new_ks (pool, "FFENAME space",
sizeof (*ns));
ns->first = (ffename) &ns->first;
ns->last = (ffename) &ns->first;
ns->pool = pool;
return ns;
}
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