DJGPP specific file.

[bison.git] / src / print_graph.c

diff --git a/src/print_graph.c b/src/print_graph.c
index d3b9b8ce5875b79ab15678c443738ccf7ec45dc0..9580f3f145ab9d204fc391bf63d0df6ea8382b98 100644 (file)
--- a/src/print_graph.c
+++ b/src/print_graph.c
@@ -1,5 +1,6 @@
 /* Output a VCG description on generated parser, for Bison,
 /* Output a VCG description on generated parser, for Bison,

-   Copyright 2001 Free Software Foundation, Inc.
+
+   Copyright (C) 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.

 
    This file is part of Bison, the GNU Compiler Compiler.
 
 
    This file is part of Bison, the GNU Compiler Compiler.
 


@@ -15,234 +16,212 @@
 
    You should have received a copy of the GNU General Public License
    along with Bison; see the file COPYING.  If not, write to
 
    You should have received a copy of the GNU General Public License
    along with Bison; see the file COPYING.  If not, write to

-   the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-   Boston, MA 02111-1307, USA.  */
+   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+   Boston, MA 02110-1301, USA.  */

 
 

+#include <config.h>

 #include "system.h"
 #include "system.h"

-#include "xalloc.h"
-#include "files.h"
-#include "gram.h"
+
+#include <quotearg.h>
+

 #include "LR0.h"
 #include "LR0.h"

-#include "lalr.h"
-#include "conflicts.h"
+#include "closure.h"

 #include "complain.h"
 #include "complain.h"

+#include "conflicts.h"
+#include "files.h"

 #include "getargs.h"
 #include "getargs.h"

-#include "state.h"
-#include "reader.h"
-#include "obstack.h"
+#include "gram.h"
+#include "lalr.h"

 #include "print_graph.h"
 #include "print_graph.h"

+#include "reader.h"
+#include "state.h"
+#include "symtab.h"

 #include "vcg.h"
 #include "vcg.h"

-#include "quote.h"

 
 

-static graph_t graph;
+static graph static_graph;
+static FILE *fgraph = NULL;

 
 

-/* This part will construct the label of nodes. */
-static void
-print_core (int state)
-{
-  int i;
-  int k;
-  int rule;
-  core *statep;
-  short *sp;
-  short *sp1;

 
 

-  statep = state_table[state];
-  k = statep->nitems;
+/*----------------------------.
+| Construct the node labels.  |
+`----------------------------*/

 
 

-  if (k == 0)
-    return;
+static void
+print_core (struct obstack *oout, state *s)
+{
+  size_t i;
+  item_number *sitems = s->items;
+  size_t snritems = s->nitems;

 
 

-  obstack_sgrow (&graph_obstack, "\t\tlabel:\t\"");
+  /* Output all the items of a state, not only its kernel.  */
+  if (report_flag & report_itemsets)
+    {
+      closure (sitems, snritems);
+      sitems = itemset;
+      snritems = nritemset;
+    }

 
 

-  for (i = 0; i < k; i++)
+  obstack_fgrow1 (oout, "state %2d\n", s->number);
+  for (i = 0; i < snritems; i++)

     {
     {

-      if (i)
-       obstack_sgrow (&graph_obstack, "\\n");
+      item_number *sp;
+      item_number *sp1;
+      rule_number r;

 
 

-      sp1 = sp = ritem + statep->items[i];
+      sp1 = sp = ritem + sitems[i];

 
 

-      while (*sp > 0)
+      while (*sp >= 0)

        sp++;
 
        sp++;
 

-      rule = -(*sp);
+      r = item_number_as_rule_number (*sp);

 
 

-      obstack_fgrow1 (&graph_obstack, _("%d: "), rule);
-      obstack_fgrow1 (&graph_obstack, " %s  ->  ", quote (tags[rlhs[rule]]));
+      if (i)
+       obstack_1grow (oout, '\n');
+      obstack_fgrow1 (oout, " %s -> ",
+                     rules[r].lhs->tag);

 
 

-      for (sp = ritem + rrhs[rule]; sp < sp1; sp++)
-       obstack_fgrow1 (&graph_obstack, "%s ", quote (tags[*sp]));
+      for (sp = rules[r].rhs; sp < sp1; sp++)
+       obstack_fgrow1 (oout, "%s ", symbols[*sp]->tag);

 
 

-      obstack_1grow (&graph_obstack, '.');
+      obstack_1grow (oout, '.');

 
 

-      while (*sp > 0)
-       obstack_fgrow1 (&graph_obstack, " %s", quote (tags[*sp++]));
+      for (/* Nothing */; *sp >= 0; ++sp)
+       obstack_fgrow1 (oout, " %s", symbols[*sp]->tag);

 
 

+      /* Experimental feature: display the look-ahead tokens. */
+      if (report_flag & report_look_ahead_tokens)
+       {
+         /* Find the reduction we are handling.  */
+         reductions *reds = s->reductions;
+         int redno = state_reduction_find (s, &rules[r]);
+
+         /* Print them if there are.  */
+         if (reds->look_ahead_tokens && redno != -1)
+           {
+             bitset_iterator biter;
+             int k;
+             char const *sep = "";
+             obstack_sgrow (oout, "[");
+             BITSET_FOR_EACH (biter, reds->look_ahead_tokens[redno], k, 0)
+               {
+                 obstack_fgrow2 (oout, "%s%s", sep, symbols[k]->tag);
+                 sep = ", ";
+               }
+             obstack_sgrow (oout, "]");
+           }
+       }

     }
     }

-  obstack_sgrow (&graph_obstack, "\"\n");

 }
 
 }
 

+
+/*---------------------------------------------------------------.
+| Output in graph_obstack edges specifications in incidence with |
+| current node.                                                  |
+`---------------------------------------------------------------*/
+

 static void
 static void

-print_actions (int state, node_t *node)
+print_actions (state *s, const char *node_name)

 {
   int i;
 {
   int i;

-  int k;
-  int state1;
-  int symbol;
-  shifts *shiftp;
-  errs *errp;
-  reductions *redp;
-  int rule;
-  static char buff[10];
-  edge_t edge;
-
-  shiftp = shift_table[state];
-  redp = reduction_table[state];
-  errp = err_table[state];

 
 

-  if (!shiftp && !redp)
-    {
-#if 0
-      if (final_state == state)
-       fprintf (f, "    $default\taccept\n");
-      else
-       fprintf (f, "    NO ACTIONS\n");
-#endif
-      return;
-    }
-
-  if (shiftp)
-    {
-      k = shiftp->nshifts;
-
-      for (i = 0; i < k; i++)
-       {
-         if (!shiftp->shifts[i])
-           continue;
-         state1 = shiftp->shifts[i];
-         symbol = accessing_symbol[state1];
-
-         if (ISVAR (symbol))
-           break;
-
-         {
-           new_edge (&edge);
-
-           if (state > state1)
-             edge.type = back_edge;
-           open_edge (&edge, &graph_obstack);
-           edge.sourcename = node->title;
-           sprintf (buff, "%d", state1);
-           edge.targetname = buff;
-           edge.color = (symbol == 0) ? blue : red;
-           /* FIXME: Be aware that quote uses static memory.  The string
-              must be output immediately (which is the case here). */
-           edge.label = tags[symbol] ? quote (tags[symbol]) : NULL;
-           output_edge (&edge, &graph_obstack);
-           close_edge (&graph_obstack);
-         }
-       }
-    }
-  else
-    {
-      i = 0;
-      k = 0;
-    }
+  transitions *trans = s->transitions;
+  reductions *reds = s->reductions;

 
 

-  if (errp)
-    {
-      int j, nerrs;
+  static char buff[10];
+  edge e;

 
 

-      nerrs = errp->nerrs;
+  if (!trans->num && !reds)
+    return;

 
 

-      for (j = 0; j < nerrs; j++)
-       {
-         if (!errp->errs[j])
-           continue;
-         symbol = errp->errs[j];
-       }
-    }
+  for (i = 0; i < trans->num; i++)
+    if (!TRANSITION_IS_DISABLED (trans, i))
+      {
+       state *s1 = trans->states[i];
+       symbol_number sym = s1->accessing_symbol;
+
+       new_edge (&e);
+
+       if (s->number > s1->number)
+         e.type = back_edge;
+       open_edge (&e, fgraph);
+       /* The edge source is the current node.  */
+       e.sourcename = node_name;
+       sprintf (buff, "%d", s1->number);
+       e.targetname = buff;
+       /* Shifts are blue, gotos are green, and error is red. */
+       if (TRANSITION_IS_ERROR (trans, i))
+         e.color = red;
+       else
+         e.color = TRANSITION_IS_SHIFT (trans, i) ? blue : green;
+       e.label = symbols[sym]->tag;
+       output_edge (&e, fgraph);
+       close_edge (fgraph);
+      }
+}

 
 

-  if (consistent[state] && redp)
-    {
-      rule = redp->rules[0];
-      symbol = rlhs[rule];
-    }

 
 

-  if (i < k)
-    {
-      for (; i < k; i++)
-       {
-         if (!shiftp->shifts[i])
-           continue;
-         state1 = shiftp->shifts[i];
-         symbol = accessing_symbol[state1];
-
-         new_edge (&edge);
-         open_edge (&edge, &graph_obstack);
-         edge.sourcename = node->title;
-         sprintf (buff, "%d", state1);
-         edge.targetname = buff;
-         edge.color = red;
-         edge.label = tags[symbol] ? quote (tags[symbol]) : NULL;
-         output_edge (&edge, &graph_obstack);
-         close_edge (&graph_obstack);
-       }
-    }
-}
+/*-------------------------------------------------------------.
+| Output in FGRAPH the current node specifications and exiting |
+| edges.                                                       |
+`-------------------------------------------------------------*/

 
 static void
 
 static void

-print_state (int state)
+print_state (state *s)

 {
   static char name[10];
 {
   static char name[10];

-  node_t node;
-
-  new_node (&node);
-  open_node (&graph_obstack);
-
-  sprintf (name, "%d", state);
-  node.title = name;
-  output_node (&node, &graph_obstack);
-
-  print_core (state);          /* node label */
-
-  close_node (&graph_obstack);
-
-  print_actions (state, &node);        /* edges */
+  struct obstack node_obstack;
+  node n;
+
+  /* The labels of the nodes are their the items.  */
+  obstack_init (&node_obstack);
+  new_node (&n);
+  sprintf (name, "%d", s->number);
+  n.title = name;
+  print_core (&node_obstack, s);
+  obstack_1grow (&node_obstack, '\0');
+  n.label = obstack_finish (&node_obstack);
+
+  open_node (fgraph);
+  output_node (&n, fgraph);
+  close_node (fgraph);
+
+  /* Output the edges.  */
+  print_actions (s, name);
+
+  obstack_free (&node_obstack, 0);

 }
 \f
 
 void
 print_graph (void)
 {
 }
 \f
 
 void
 print_graph (void)
 {

-  int i;
+  state_number i;

 
 

-  if (!graph_flag)
-    return;
-  new_graph (&graph);
+  /* Output file.  */
+  fgraph = xfopen (spec_graph_file, "w");

 
 

-  /* graph.smanhattan_edges = yes;
-     graph.manhattan_edges = yes; */
+  new_graph (&static_graph);

 
 

-  graph.display_edge_labels = yes;
-  graph.layoutalgorithm = 0;
+  static_graph.display_edge_labels = yes;

 
 

-  graph.port_sharing = no;
-  graph.finetuning = yes;
-  graph.straight_phase = yes;
-  graph.priority_phase = yes;
-  graph.splines = yes;
+  static_graph.port_sharing = no;
+  static_graph.finetuning = yes;
+  static_graph.priority_phase = yes;
+  static_graph.splines = yes;

 
 

-  graph.crossing_weight = median;
+  static_graph.crossing_weight = median;

 
   /* Output graph options. */
 
   /* Output graph options. */

-  open_graph (&graph_obstack);
-  output_graph (&graph, &graph_obstack);
+  open_graph (fgraph);
+  output_graph (&static_graph, fgraph);

 
 

+  /* Output nodes and edges. */
+  new_closure (nritems);

   for (i = 0; i < nstates; i++)
   for (i = 0; i < nstates; i++)

-    /* Output nodes & edges. */
-    print_state (i);
+    print_state (states[i]);
+  free_closure ();

 
   /* Close graph. */
 
   /* Close graph. */

-  close_graph (&graph, &graph_obstack);
+  close_graph (&static_graph, fgraph);
+  xfclose (fgraph);

 }
 }