* lib/bitset.h (__INT_TO_PTR): Define to a value that presumes C89.

[bison.git] / src / print_graph.c

diff --git a/src/print_graph.c b/src/print_graph.c
index f9bec77d4c81638a110f0e0b2527d27687c1f19b..c92ae3577fdf89cf621484f9f98fc6073f998b2e 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 Free Software Foundation, Inc.

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


@@ -19,74 +20,95 @@
    Boston, MA 02111-1307, USA.  */
 
 #include "system.h"
    Boston, MA 02111-1307, USA.  */
 
 #include "system.h"

-#include "quotearg.h"
-#include "files.h"
-#include "symtab.h"
-#include "gram.h"
+
+#include <obstack.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 "closure.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"
 

-static graph_t graph;
+static graph static_graph;

 static FILE *fgraph = NULL;
 
 static FILE *fgraph = NULL;
 

-static inline const char *
-escape (const char *s)
-{
-  return quotearg_n_style (1, escape_quoting_style, s);
-}

 
 

+/*----------------------------.
+| Construct the node labels.  |
+`----------------------------*/

 
 

-/* This part will construct the label of nodes. */

 static void
 static void

-print_core (state_t *state, struct obstack *node_obstack)
+print_core (struct obstack *oout, state *s)

 {
   int i;
 {
   int i;

-  short *sitems = state->items;
-  int snitems   = state->nitems;
+  item_number *sitems = s->items;
+  int snritems = s->nitems;

 
   /* Output all the items of a state, not only its kernel.  */
 
   /* Output all the items of a state, not only its kernel.  */

-  if (trace_flag)
+  if (report_flag & report_itemsets)

     {
     {

-      closure (sitems, snitems);
+      closure (sitems, snritems);

       sitems = itemset;
       sitems = itemset;

-      snitems = nitemset;
+      snritems = nritemset;

     }
 
     }
 

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

     {
     {

-      short *sp;
-      short *sp1;
-      int rule;
+      item_number *sp;
+      item_number *sp1;
+      rule_number r;

 
       sp1 = sp = ritem + sitems[i];
 
       while (*sp >= 0)
        sp++;
 
 
       sp1 = sp = ritem + sitems[i];
 
       while (*sp >= 0)
        sp++;
 

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

 
       if (i)
 
       if (i)

-       obstack_1grow (node_obstack, '\n');
-      obstack_fgrow1 (node_obstack, " %s -> ",
-                     escape (symbols[rules[rule].lhs]->tag));
+       obstack_1grow (oout, '\n');
+      obstack_fgrow1 (oout, " %s -> ",
+                     rules[r].lhs->tag);

 
 

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

 
 

-      obstack_1grow (node_obstack, '.');
+      obstack_1grow (oout, '.');

 
       for (/* Nothing */; *sp >= 0; ++sp)
 
       for (/* Nothing */; *sp >= 0; ++sp)

-       obstack_fgrow1 (node_obstack, " %s", escape (symbols[*sp]->tag));
+       obstack_fgrow1 (oout, " %s", symbols[*sp]->tag);
+
+      /* Experimental feature: display the lookaheads. */
+      if (report_flag & report_lookaheads)
+       {
+         /* 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->lookaheads && redno != -1)
+           {
+             bitset_iterator biter;
+             int k;
+             int not_first = 0;
+             obstack_sgrow (oout, "[");
+             BITSET_FOR_EACH (biter, reds->lookaheads[redno], k, 0)
+               obstack_fgrow2 (oout, "%s%s",
+                               not_first++ ? ", " : "",
+                               symbols[k]->tag);
+             obstack_sgrow (oout, "]");
+           }
+       }

     }
 }
 
     }
 }
 


@@ -97,41 +119,41 @@ print_core (state_t *state, struct obstack *node_obstack)
 `---------------------------------------------------------------*/
 
 static void
 `---------------------------------------------------------------*/
 
 static void

-print_actions (state_t *state, const char *node_name)
+print_actions (state *s, const char *node_name)

 {
   int i;
 
 {
   int i;
 

-  shifts   *shiftp = state->shifts;
-  reductions *redp = state->reductions;
+  transitions *trans = s->transitions;
+  reductions *reds = s->reductions;

 
   static char buff[10];
 
   static char buff[10];

-  edge_t edge;
+  edge e;

 
 

-  if (!shiftp->nshifts && !redp)
+  if (!trans->num && !reds)

     return;
 
     return;
 

-  for (i = 0; i < shiftp->nshifts; i++)
-    if (!SHIFT_IS_DISABLED (shiftp, i))
+  for (i = 0; i < trans->num; i++)
+    if (!TRANSITION_IS_DISABLED (trans, i))

       {
       {

-       int state1 = shiftp->shifts[i];
-       int symbol = states[state1]->accessing_symbol;
+       state *s1 = trans->states[i];
+       symbol_number sym = s1->accessing_symbol;

 
 

-       new_edge (&edge);
+       new_edge (&e);

 
 

-       if (state->number > state1)
-         edge.type = back_edge;
-       open_edge (&edge, fgraph);
+       if (s->number > s1->number)
+         e.type = back_edge;
+       open_edge (&e, fgraph);

        /* The edge source is the current node.  */
        /* The edge source is the current node.  */

-       edge.sourcename = node_name;
-       sprintf (buff, "%d", state1);
-       edge.targetname = buff;
+       e.sourcename = node_name;
+       sprintf (buff, "%d", s1->number);
+       e.targetname = buff;

        /* Shifts are blue, gotos are green, and error is red. */
        /* Shifts are blue, gotos are green, and error is red. */

-       if (SHIFT_IS_ERROR (shiftp, i))
-         edge.color = red;
+       if (TRANSITION_IS_ERROR (trans, i))
+         e.color = red;

        else
        else

-         edge.color = SHIFT_IS_SHIFT(shiftp, i) ? blue : green;
-       edge.label = escape (symbols[symbol]->tag);
-       output_edge (&edge, fgraph);
+         e.color = TRANSITION_IS_SHIFT (trans, i) ? blue : green;
+       e.label = symbols[sym]->tag;
+       output_edge (&e, fgraph);

        close_edge (fgraph);
       }
 }
        close_edge (fgraph);
       }
 }


@@ -143,27 +165,27 @@ print_actions (state_t *state, const char *node_name)
 `-------------------------------------------------------------*/
 
 static void
 `-------------------------------------------------------------*/
 
 static void

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

 {
   static char name[10];
   struct obstack node_obstack;
 {
   static char name[10];
   struct obstack node_obstack;

-  node_t node;
+  node n;

 
   /* The labels of the nodes are their the items.  */
   obstack_init (&node_obstack);
 
   /* The labels of the nodes are their the items.  */
   obstack_init (&node_obstack);

-  new_node (&node);
-  sprintf (name, "%d", state->number);
-  node.title = name;
-  print_core (state, &node_obstack);
+  new_node (&n);
+  sprintf (name, "%d", s->number);
+  n.title = name;
+  print_core (&node_obstack, s);

   obstack_1grow (&node_obstack, '\0');
   obstack_1grow (&node_obstack, '\0');

-  node.label = obstack_finish (&node_obstack);
+  n.label = obstack_finish (&node_obstack);

 
   open_node (fgraph);
 
   open_node (fgraph);

-  output_node (&node, fgraph);
+  output_node (&n, fgraph);

   close_node (fgraph);
 
   /* Output the edges.  */
   close_node (fgraph);
 
   /* Output the edges.  */

-  print_actions (state, name);
+  print_actions (s, name);

 
   obstack_free (&node_obstack, 0);
 }
 
   obstack_free (&node_obstack, 0);
 }


@@ -172,32 +194,32 @@ print_state (state_t *state)
 void
 print_graph (void)
 {
 void
 print_graph (void)
 {

-  int i;
+  state_number i;

 
   /* Output file.  */
   fgraph = xfopen (spec_graph_file, "w");
 
 
   /* Output file.  */
   fgraph = xfopen (spec_graph_file, "w");
 

-  new_graph (&graph);
+  new_graph (&static_graph);

 
 #if 0
 
 #if 0

-  graph.smanhattan_edges = yes;
-  graph.manhattan_edges = yes;
+  static_graph.smanhattan_edges = yes;
+  static_graph.manhattan_edges = yes;

 #endif
 
 #endif
 

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

 
 

-  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.long_straight_phase = yes;
+  static_graph.priority_phase = yes;
+  static_graph.splines = yes;

 
 

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

 
   /* Output graph options. */
   open_graph (fgraph);
 
   /* Output graph options. */
   open_graph (fgraph);

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

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


@@ -206,6 +228,6 @@ print_graph (void)
   free_closure ();
 
   /* Close graph. */
   free_closure ();
 
   /* Close graph. */

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

   xfclose (fgraph);
 }
   xfclose (fgraph);
 }