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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;
+}