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/* lab.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:
Description:
Complex data abstraction for Fortran labels. Maintains a single master
list for all labels; it is expected initialization and termination of
this list will occur on program-unit boundaries.
Modifications:
22-Aug-89 JCB 1.1
Change ffelab_new for new ffewhere interface.
*/
/* Include files. */
#include "proj.h"
#include "lab.h"
#include "malloc.h"
/* Externals defined here. */
ffelab ffelab_list_;
ffelabNumber ffelab_num_news_;
/* Simple definitions and enumerations. */
/* Internal typedefs. */
/* Private include files. */
/* Internal structure definitions. */
/* Static objects accessed by functions in this module. */
/* Static functions (internal). */
/* Internal macros. */
/* ffelab_find -- Find the ffelab object having the desired label value
ffelab l;
ffelabValue v;
l = ffelab_find(v);
If the desired ffelab object doesn't exist, returns NULL.
Straightforward search of list of ffelabs. */
ffelab
ffelab_find (ffelabValue v)
{
ffelab l;
for (l = ffelab_list_; (l != NULL) && (ffelab_value (l) != v); l = l->next)
;
return l;
}
/* ffelab_finish -- Shut down label management
ffelab_finish();
At the end of processing a program unit, call this routine to shut down
label management.
Kill all the labels on the list. */
void
ffelab_finish ()
{
ffelab l;
ffelab pl;
for (pl = NULL, l = ffelab_list_; l != NULL; pl = l, l = l->next)
if (pl != NULL)
malloc_kill_ks (ffe_pool_any_unit (), pl, sizeof (*pl));
if (pl != NULL)
malloc_kill_ks (ffe_pool_any_unit (), pl, sizeof (*pl));
}
/* ffelab_init_3 -- Initialize label management system
ffelab_init_3();
Initialize the label management system. Do this before a new program
unit is going to be processed. */
void
ffelab_init_3 ()
{
ffelab_list_ = NULL;
ffelab_num_news_ = 0;
}
/* ffelab_new -- Create an ffelab object.
ffelab l;
ffelabValue v;
l = ffelab_new(v);
Create a label having a given value. If the value isn't known, pass
FFELAB_valueNONE, and set it later with ffelab_set_value.
Allocate, initialize, and stick at top of label list.
22-Aug-89 JCB 1.1
Change for new ffewhere interface. */
ffelab
ffelab_new (ffelabValue v)
{
ffelab l;
++ffelab_num_news_;
l = (ffelab) malloc_new_ks (ffe_pool_any_unit (), "FFELAB label", sizeof (*l));
l->next = ffelab_list_;
#ifdef FFECOM_labelHOOK
l->hook = FFECOM_labelNULL;
#endif
l->value = v;
l->firstref_line = ffewhere_line_unknown ();
l->firstref_col = ffewhere_column_unknown ();
l->doref_line = ffewhere_line_unknown ();
l->doref_col = ffewhere_column_unknown ();
l->definition_line = ffewhere_line_unknown ();
l->definition_col = ffewhere_column_unknown ();
l->type = FFELAB_typeUNKNOWN;
ffelab_list_ = l;
return l;
}
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